CN204757708U - Power generation facility is united with converter steam and sintering waste heat to coal gas - Google Patents

Power generation facility is united with converter steam and sintering waste heat to coal gas Download PDF

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CN204757708U
CN204757708U CN201520308255.4U CN201520308255U CN204757708U CN 204757708 U CN204757708 U CN 204757708U CN 201520308255 U CN201520308255 U CN 201520308255U CN 204757708 U CN204757708 U CN 204757708U
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waste heat
heat boiler
steam
central cooler
outlet
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胡风华
徐忠
彭杰
刘媛
周响球
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Smelting Vast Of Heaven Energy-Conserving And Environment-Protective Technology Co Ltd In Hunan
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Smelting Vast Of Heaven Energy-Conserving And Environment-Protective Technology Co Ltd In Hunan
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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    • Y02P10/00—Technologies related to metal processing
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Abstract

The utility model provides a power generation facility is united with converter steam and sintering waste heat to coal gas, including generator 1, steam turbine 2, condenser 3, cross and vulcanize furnace 4, the sintering tub exhaust -heat boiler 5 that discharges fume, the cold quick -witted exhaust -heat boiler 6 of ring, the steelmaking converter steam pocket 9, converter steam heat accumulator 8, the low parameter superheated steam that the cold quick -witted exhaust -heat boiler 6 of ring produced connects the steam turbine and mends steam ports 202, the cold quick -witted exhaust -heat boiler 6 of ring, the sintering is discharged fume the high parameter saturated steam of tub exhaust -heat boiler 5 and 8 productions in the converter steam heat accumulator and was passed through and vulcanize furnace 4 and get into steam turbine main intake hole 201, 204 pivots of connecting or drive generator 1 of pivot of steam turbine 2. The utility model discloses the advantage is, has used multipurposely steel plant surplus coal gas, sintering waste heat and converter steam, and waste heat utilization is high, and the system is nimble, and turbo generator set stoppage in transit rate is low, and the investment is low with the running cost.

Description

Coal gas and Converter Steam and sintering waste heat combined power generation device
Technical field
The utility model relates to a kind of afterheat generating system, is specifically related to a kind of coal gas and Converter Steam and sintering waste heat combined generating system.
Background technology
Iron and steel enterprise is energy intensive enterprise, and energy resource consumption is huge, accounts for 16% of national total energy consumption, and energy utilization rate is 30% ~ 50%, and energy consumption per ton steel is higher than developed country by about 20%.In steel manufacture process, produce and have a large amount of coal gas, high-temperature flue gas, steam, residual heat and energy can be recycled greatly.
At present, the coal gas that most Large Steel ironworks is reclaimed supplies the steel plant such as coke oven, hot-blast stove, heating furnace from production process mainly as fuel.The coal gas that this part main technique utilizes accounts for 50% ~ 80% of coal gas total resources, remainder is for power plant for self-supply's generating, mode has clean burn (or mixing burning) gas boiler to generate electricity and gas combustion-gas vapor combined cycle (CCPP), and redundance diffuses.According to investigations, China's Key Iron And Steel blast furnace gas diffusing rate average out to 7.4%, coke oven gas discharge rate average out to 3.8%, coal gas of converter ton steel reclaims and only accounts for 2/3rds of recyclable amount.And in the developed country such as Japanese, German, all recyclings substantially of steel plant's by-product gas, without diffusing.
The waste heat recovery of heat sinter cooling is at present more universal, but recovering effect does not all reach design level, mainly due to sinter fume amount and temperature fluctuation large, the design load of getting is with under desirable state.
In pneumatic steelmaking operation, iron and steel per ton can produce 50 ~ 80kg steam, but due to converter be interrupted produce, steam be also be interrupted, current steam is discharged mostly.Also have Some Enterprises to reclaim saturated vapor, newly-built saturated vapor generating main building, but electricity generation system Chang Yingang iron process reason is shut down, utilization rate of waste heat is low.
Scattered waste heat, if do not reclaimed, is just wasted in vain.Current existing situation scattered sets up cogeneration station, as set up the remaining waste heat boiler of sintering and generating main building sintering plant central cooler is other, sets up Power Generation by BF Gas station in blast furnace region, sets up converter to generate electricity main building on steelmaking converter side.Be reclaimed many waste heats like this, but set up numerous scattered little waste heat to postback power station, the problem of two aspects will be brought: one is that occupation of land is many, and investment is large, and operation expense is high; On the other hand, the thermal efficiency that part of waste heat reclaims is low, and the poor stability of system, outage rate is high.
Current sintering waste heat is utilized by Devoting Major Efforts To Developing, people start to consider sintering waste heat, Converter Steam to be combined utilization, as the patent No. 2013201611111, name is called that " Converter Steam sintering waste heat combine utilize electricity generation system " is after being heated by converter saturated vapor, then merges with the steam that sintering circular-cooler waste heat boiler produces and generate electricity.This waste heat recovery mode improves saturated vapor parameter really, but do not utilized by the high-temperature smoke discharging of heating furnace, the UTILIZATION OF VESIDUAL HEAT IN of sintering also only make use of the waste heat of central cooler, and system thermal efficiency is low, though solve the problem that residual heat system merges, do not improve utilization rate of waste heat.
Utility model content
For the residual heat and energy emission problem of iron and steel enterprise's dispersion.The utility model incites somebody to action residual heat and energy comprehensive reutilization everywhere, carries out cogeneration.
According to the purpose of this utility model, there is provided a kind of coal gas and Converter Steam and sintering waste heat combined power generation device, this device comprises generator, steam turbine, condenser, overheated afterburning stove, sintering smoke exhaust pipe waste heat boiler, central cooler waste heat boiler, steelmaking converter drum, the Converter Steam storage heater that is connected with steelmaking converter drum; The high parameter saturated vapor output channel of the high parameter saturated vapor output channel and Converter Steam storage heater that wherein sinter smoke exhaust pipe waste heat boiler is connected to the steam inlet of overheated afterburning stove respectively, and the steam (vapor) outlet of overheated afterburning stove is connected to the main air intake of steam turbine through vapours main pipeline;
Wherein central cooler waste heat boiler has high parameter drum, the high parameter saturated vapor output channel from the high parameter drum of central cooler waste heat boiler is drawn:
Be connected to the steam inlet of overheated afterburning stove, or
When central cooler waste heat boiler has external type overheating device in addition, be connected to the steam inlet of the high parameter superheater of external type overheating device, and the steam (vapor) outlet of this high parameter superheater is connected to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b) and/or is connected to the steam inlet of overheated afterburning stove by superheated steam branch road (L2d), or
When central cooler waste heat boiler has superheater in addition, be connected to the steam inlet of the built-in high parameter superheater in central cooler waste heat boiler, and in central cooler waste heat boiler, the steam (vapor) outlet of high parameter superheater is connected to the main air intake of steam turbine and/or is connected to the steam inlet of overheated afterburning stove by superheated steam branch road (L2d) by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b); With
Wherein, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and the steam drain of steam turbine is connected to condenser, and optionally, the low parameter superheated steam outlet of central cooler waste heat boiler is connected to the filling mouth of steam turbine.
Therefore, according to first embodiment of the present utility model, a kind of coal gas and Converter Steam and sintering waste heat combined power generation device are provided, comprise generator, steam turbine, condenser, overheated afterburning stove, sintering smoke exhaust pipe waste heat boiler, central cooler waste heat boiler, steelmaking converter drum, the Converter Steam storage heater be connected with steelmaking converter drum, it is characterized in that: the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler and the high parameter saturated vapor output channel of Converter Steam storage heater are connected to the steam inlet of overheated afterburning stove respectively, the steam (vapor) outlet of overheated afterburning stove is connected to the main air intake of steam turbine through vapours main pipeline,
Wherein central cooler waste heat boiler has high parameter drum, and the high parameter saturated vapor output channel of drawing from the high parameter drum of central cooler waste heat boiler is also connected to the steam inlet of overheated afterburning stove; With
Wherein, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and the steam drain of steam turbine is connected to condenser, and optionally, the low parameter superheated steam outlet of central cooler waste heat boiler is connected to the filling mouth of steam turbine.
According to second embodiment of the present utility model, a kind of coal gas and Converter Steam and sintering waste heat combined power generation device are provided, comprise generator, steam turbine, condenser, overheated afterburning stove, sintering smoke exhaust pipe waste heat boiler, there is the central cooler waste heat boiler of external type overheating device, steelmaking converter drum and the Converter Steam storage heater be connected with steelmaking converter drum, it is characterized in that: the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler and the high parameter saturated vapor output channel of Converter Steam storage heater are connected to the steam inlet of overheated afterburning stove respectively, the steam (vapor) outlet of overheated afterburning stove is connected to the main air intake of steam turbine through vapours main pipeline,
Wherein central cooler waste heat boiler has high parameter drum and central cooler waste heat boiler has external type overheating device in addition, the high parameter saturated vapor output channel of drawing from the high parameter drum of central cooler waste heat boiler is connected to the steam inlet of the high parameter superheater of external type overheating device, and the steam (vapor) outlet of this high parameter superheater is connected to the main air intake of steam turbine respectively by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b) and/or is connected to the steam inlet of overheated afterburning stove by superheated steam branch road (L2d); With
Wherein, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and the steam drain of steam turbine is connected to condenser, and optionally, the low parameter superheated steam outlet of central cooler waste heat boiler is connected to the filling mouth of steam turbine.
According to the 3rd embodiment of the present utility model, a kind of coal gas and Converter Steam and sintering waste heat combined power generation device are provided, comprise generator, steam turbine, condenser, overheated afterburning stove, sintering smoke exhaust pipe waste heat boiler, there is the central cooler waste heat boiler of built-in high parameter superheater, steelmaking converter drum and the Converter Steam storage heater be connected with steelmaking converter drum, it is characterized in that: the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler and the high parameter saturated vapor output channel of Converter Steam storage heater are connected to the steam inlet of overheated afterburning stove respectively, the steam (vapor) outlet of overheated afterburning stove is connected to the main air intake of steam turbine through vapours main pipeline,
Wherein central cooler waste heat boiler has high parameter drum and central cooler waste heat boiler has superheater in addition, the high parameter saturated vapor output channel of drawing from the high parameter drum of central cooler waste heat boiler is connected to the steam inlet of the built-in high parameter superheater in central cooler waste heat boiler, and the steam (vapor) outlet of central cooler waste heat boiler built-in high parameter superheater is connected to the main air intake of steam turbine respectively by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b) and/or is connected to the steam inlet of overheated afterburning stove by superheated steam branch road (L2d), with
Wherein, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and the steam drain of steam turbine is connected to condenser, and optionally, the low parameter superheated steam outlet of central cooler waste heat boiler is connected to the filling mouth of steam turbine.
In above-mentioned second and the third embodiment, superheated steam secondary duct (L1b) and superheated steam branch road (L2d) are set up in parallel, or separate superheated steam branch road (L2d) from superheated steam secondary duct (L1b).Both are connected to the main air intake of steam turbine and the steam inlet of overheated afterburning stove respectively.
Preferably, after the branch point that superheated steam secondary duct (L1b) is crossing with superheated steam branch road (L2d), the first valve V1 is set in superheated steam secondary duct (L1b), the second valve V2 is set on superheated steam branch road (L2d) simultaneously.Or switch valve is set at the branch point place that superheated steam secondary duct (L1b) is crossing with superheated steam branch road (L2d).When the flue-gas temperature of the high-temperature region from central cooler higher (such as higher than 360 DEG C), open the first valve V1 and close the second valve V2 or open by switch valve passage and closedown superheated steam branch road (L2d) that superheated steam secondary duct (L1b) back segment flows to the main air intake of steam turbine.And when the flue-gas temperature of the high-temperature region from central cooler is on the low side, timely closedown first valve V1 also opens the second valve V2 or opens superheated steam branch road (L2d) by switch valve in time and cut off the passage that superheated steam secondary duct (L1b) back segment flows to the main air intake of steam turbine, the even running of maintenance system, guarantees that high efficiency generates electricity.
In this application, be provided with steam superheater, burner and outside in overheated afterburning stove and be provided with air blast.The height of central cooler waste heat boiler or length are generally 1.5-40 rice, preferred 2-35 rice, preferred 3-30 rice, more preferably 4-25 rice.The agent structure of central cooler waste heat boiler be rendered as vertical cylinder form or for there is rectangular cross section or there is the form of tower body of 5-12 limit shape (as 8 limit shapes) cross section.The height of this vertical cylinder or tower body or length are generally 1.5-40 rice, preferred 2-35 rice, preferred 3-30 rice, more preferably 4-25 rice, such as 5,6,7, and 8,10 meters.The diameter of vertical cylinder or the width of tower body and/or thickness are generally 0.5-10 rice, preferred 0.7-9 rice, more preferably 1-8 rice, such as 2,3,4 meters.
In this application, generally, sinter in smoke exhaust pipe waste heat boiler and be provided with economizer, evaporimeter be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum.
The steam (vapor) outlet of steelmaking converter drum is connected with the steam inlet of storage heater by steelmaking converter drum saturated vapor pipeline.Steelmaking converter drum produces the saturated vapor of interruption and is transported in storage heater via steelmaking converter drum saturated vapor pipeline.
In this application, preferably, this device is provided with water pump, water delivery side of pump is connected to the water inlet of the economizer of sintering smoke exhaust pipe waste heat boiler by the first water supply branch road, the outlet of economizer is connected to the first entrance of the drum of sintering smoke exhaust pipe waste heat boiler, first outlet of drum is connected with the entrance of evaporimeter, and the outlet of evaporimeter is connected with the second entrance of drum, and the second outlet of drum and high parameter steam (vapor) outlet are connected with the steam inlet of overheated afterburning stove by saturated vapor pipeline; Preferably, the outlet bellows sintering smoke exhaust pipe waste heat boiler are connected with air-introduced machine; Preferably, the entrance fan housing of this sintering smoke exhaust pipe waste heat boiler connects sintering device flue gas conveyance conduit.
In this application, preferably, be provided with condensation water heater, low parameter evaporimeter, low parameter superheater, high parameter economizer and high parameter evaporimeter in central cooler waste heat boiler and be provided at an outer portion with central cooler waste heat boiler low parameter drum and central cooler waste heat boiler high parameter drum.
In this application, preferably, also be provided with oxygen-eliminating device to be connected with central cooler waste heat boiler low parameter drum, external feedwater carrier pipe or be connected to the entrance of the condensation water heater of central cooler waste heat boiler from the condensate water carrier pipe that the delivery port of condenser is drawn, the outlet of condensation water heater is connected with the water inlet of oxygen-eliminating device, the delivery port of oxygen-eliminating device is connected with the first entrance of the low parameter drum of central cooler waste heat boiler, first outlet of low parameter drum is connected with the entrance of central cooler waste heat boiler low parameter evaporimeter, the outlet of low parameter evaporimeter is connected with the second entrance of low parameter drum, second outlet of central cooler waste heat boiler low parameter drum is connected with the entrance of low parameter superheater, the outlet of low parameter superheater is connected with the filling mouth of steam turbine by low parameter superheat steam pipeline.
In first embodiment of the application, the high-temperature smoke discharging pipeline of the conveyance conduit and overheated afterburning stove that are also provided with central cooler flue gas (such as from the high-temperature region of central cooler or the flue gas of middle warm area) is connected to the smoke inlet end of central cooler waste heat boiler respectively, be connected by the entrance of the second water supply branch road with the high parameter economizer of central cooler waste heat boiler with water delivery side of pump, the outlet of high parameter economizer is connected with the first entrance of central cooler waste heat boiler high parameter drum, first outlet of high parameter drum is connected with the entrance of central cooler waste heat boiler high parameter evaporimeter, the outlet of high parameter evaporimeter is connected with the second entrance of high parameter drum, second outlet and the high parameter steam (vapor) outlet of central cooler waste heat boiler high parameter drum are connected to the steam inlet of overheated afterburning stove by saturated vapor pipeline, preferably, the outlet bellows of central cooler waste heat boiler are connected with air-introduced machine.
In second embodiment of the application, preferably, water delivery side of pump is connected with the entrance of the high parameter economizer of central cooler waste heat boiler by the second water supply branch road, the outlet of high parameter economizer is connected with the first entrance of central cooler waste heat boiler high parameter drum, first outlet of high parameter drum is connected with the entrance of central cooler waste heat boiler high parameter evaporimeter, the outlet of high parameter evaporimeter is connected with the second entrance of high parameter drum, second outlet of central cooler waste heat boiler high parameter drum and high parameter steam (vapor) outlet are connected to the steam inlet of the high parameter superheater of external type overheating device by saturated vapor pipeline, the steam (vapor) outlet of external type overheating device is connected to the primary air inlet of steam turbine by superheat steam pipeline, preferably, the outlet bellows of central cooler waste heat boiler are connected with air-introduced machine.
In second embodiment of the application, more preferably, also be provided with central cooler high-temperature flue gas pipeline to be connected with the smoke inlet end of external type overheating device with overheated afterburning stove high-temperature smoke discharging pipeline, the smoke outlet of external type overheating device is connected with the smoke inlet end of central cooler waste heat boiler by superheater flue.
In the 3rd embodiment of the application, preferably, be provided with condensation water heater, low parameter evaporimeter, low parameter superheater, high parameter economizer, high parameter evaporimeter and high parameter superheater in the central cooler waste heat boiler with built-in high parameter superheater, and be provided at an outer portion with central cooler waste heat boiler low parameter drum and central cooler waste heat boiler high parameter drum.
In the 3rd embodiment of the application, more preferably, the high-temperature smoke discharging pipeline of the conveyance conduit and overheated afterburning stove that are also provided with central cooler high-temperature flue gas is connected to the smoke inlet end of the central cooler waste heat boiler with built-in high parameter superheater respectively, in central cooler waste heat boiler, the conveyance conduit of warm flue gas and/or low-temperature flue gas is connected to the second smoke inlet of central cooler waste heat boiler, be connected with central cooler waste heat boiler low parameter drum with also having oxygen-eliminating device, external feedwater carrier pipe or be connected to the entrance of the condensation water heater of central cooler waste heat boiler from the condensate water carrier pipe that the delivery port of condenser is drawn, the outlet of condensation water heater is connected with the water inlet of oxygen-eliminating device, the delivery port of oxygen-eliminating device is connected with the first entrance of the low parameter drum of central cooler waste heat boiler, first outlet of low parameter drum is connected with the entrance of central cooler waste heat boiler low parameter evaporimeter, the outlet of low parameter evaporimeter is connected with the second entrance of low parameter drum, second outlet of central cooler waste heat boiler low parameter drum is connected with the entrance of low parameter superheater, the outlet of low parameter superheater is connected with the filling mouth of steam turbine by low parameter superheat steam pipeline.
In the 3rd embodiment of the application, more preferably, water delivery side of pump is connected by the entrance of the second water supply branch road with the high parameter economizer in the central cooler waste heat boiler with built-in high parameter superheater, the outlet of high parameter economizer is connected with the first entrance of central cooler waste heat boiler high parameter drum, first outlet of high parameter drum is connected with the entrance of central cooler waste heat boiler high parameter evaporimeter, the outlet of high parameter evaporimeter is connected with the second entrance of high parameter drum, second outlet and the high parameter steam (vapor) outlet of central cooler waste heat boiler high parameter drum are connected to the steam inlet of built-in high parameter superheater by saturated vapor pipeline, the steam (vapor) outlet of high parameter superheater connects the primary air inlet of steam turbine by superheat steam pipeline, preferably, the outlet bellows of built-in superheater central cooler waste heat boiler are connected with air-introduced machine.
In this application namely in all embodiments, it is further preferred that be provided with steam superheater, burner and outside in overheated afterburning stove to be provided with air blast; Have gas piping to be connected to overheated afterburning burner gas entry, air blast connects the air inlet of combustor of overheated afterburning stove; The high-temperature smoke discharging mouth of overheated afterburning stove is connected to the smoke inlet end of central cooler waste heat boiler by high-temperature smoke discharging pipeline.Or the high-temperature smoke discharging mouth of overheated afterburning stove is connected to the smoke inlet of external type overheating device by high-temperature smoke discharging pipeline.
In this application, it is further preferred that the rotating shaft of steam turbine connects or drives the rotating shaft of generator, the steam drain of steam turbine is connected with condenser, and the condensate water efferent duct of condenser is connected to external feedwater carrier pipe or the condensate water carrier pipe of central cooler waste heat boiler.
Preferably, the low parameter drum of central cooler waste heat boiler has the 3rd outlet and the latter is connected to the water inlet of water pump, and the delivery port of water pump is divided into above-described two water supply branch roads i.e. the first water supply branch road and the second water supply branch road.
Preferably, the low parameter drum with the central cooler waste heat boiler of built-in superheater has the 3rd outlet and the latter is connected to the water inlet of water pump, and the delivery port of water pump is divided into above-described two water supply branch roads i.e. the first water supply branch road and the second water supply branch road.
Preferably, high-temperature smoke discharging pipeline is provided with smoke exhaust pipe control valve and/or atmospheric valve.
Preferably, sintering smoke exhaust pipe waste heat boiler is single pressure type wet steamer.Steam turbine is condensing steam compensating turbine.Sintering circular-cooler waste heat boiler is dual voltage type waste heat boiler.
According to another object of the present utility model, a kind of method of coal gas and Converter Steam and sintering waste heat cogeneration is also provided or uses the device according to first embodiment to carry out the method generated electricity, the method comprises: the saturated vapor of the saturated steam flowing that sintering smoke exhaust pipe waste heat boiler produces and Converter Steam storage heater is undertaken overheated by overheated afterburning stove and produces high parameter superheated steam, by the main air intake of produced high parameter superheated steam through vapours main pipeline input steam turbine
Wherein, the saturated steam flowing carried by the high parameter saturated vapor output channel (L2a) of drawing from the saturated steaming of the high parameter of central cooler waste heat boiler:
1) steam inlet of overheated afterburning stove is transported to, or
2) when central cooler waste heat boiler has external type overheating device in addition, be transported to the steam inlet of the high parameter superheater of external type overheating device, and be transported to the main air intake of steam turbine from the superheated steam that the steam (vapor) outlet of this high parameter superheater exports by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b) or be transported to the steam inlet of overheated afterburning stove by superheated steam branch road (L2d), or
3) when central cooler waste heat boiler has superheater in addition, be transported to the steam inlet of the built-in high parameter superheater in central cooler waste heat boiler, and the superheated steam exported from the steam (vapor) outlet of high parameter superheater in central cooler waste heat boiler is transported to the main air intake of steam turbine further by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b) or is transported to the steam inlet of overheated afterburning stove by superheated steam branch road (L2d);
With, optionally, the filling mouth of the low parameter superheated steam input steam turbine produced by the low parameter superheater of central cooler waste heat boiler, to allow Steam Turbine Driven generator generate electricity.
Therefore, according to the 4th embodiment of the application, the method (abbreviation first method) providing a kind of method of coal gas and Converter Steam and sintering waste heat cogeneration or use the device according to first embodiment to carry out generating electricity, the method comprises: three strands of saturated vapors of sintering smoke exhaust pipe waste heat boiler and central cooler waste heat boiler and Converter Steam storage heater flow through overheated afterburning stove to carry out overheated and produces high parameter superheated steam, by the main air intake of produced high parameter superheated steam through vapours main pipeline input steam turbine, with, optionally, the filling mouth of the low parameter superheated steam input steam turbine that the low parameter superheater of central cooler waste heat boiler is produced, to allow Steam Turbine Driven generator generate electricity.
According to the 5th embodiment of the application, the method (abbreviation second method) providing a kind of method of coal gas and Converter Steam and sintering waste heat cogeneration or use the device according to second embodiment to carry out generating electricity, the method comprises: the saturated steam flowing that sintering smoke exhaust pipe waste heat boiler and Converter Steam storage heater produce is delivered to and carries out overheated in overheated afterburning stove and produce first burst of high parameter flow of superheated steam, then by the main air intake of this first burst of high parameter flow of superheated steam through vapours main pipeline input steam turbine; The saturated vapor that central cooler waste heat boiler produces is undertaken overheated by external type overheating device and produces second burst of high parameter flow of superheated steam, this second burst of high parameter flow of superheated steam is maybe delivered in overheated afterburning stove through vapours branch road through the main air intake of vapours secondary duct input steam turbine by this second burst of high parameter flow of superheated steam, with, optionally, the filling mouth of the low parameter superheated steam input steam turbine produced by the low parameter superheater of central cooler waste heat boiler, to allow Steam Turbine Driven generator generate electricity.
According to the 6th embodiment of the application, the method (being called for short the third method) providing a kind of method of coal gas and Converter Steam and sintering waste heat cogeneration or use the device according to second embodiment to carry out generating electricity, the method comprises: the saturated steam flowing that sintering smoke exhaust pipe waste heat boiler and Converter Steam storage heater produce is delivered to and carries out overheated in overheated afterburning stove and produce first burst of high parameter flow of superheated steam, then by the main air intake of this first burst of high parameter flow of superheated steam through vapours main pipeline input steam turbine; The central cooler waste heat boiler with built-in high parameter superheater produces second burst of high parameter flow of superheated steam by this built-in high parameter superheater, then this second burst of high parameter flow of superheated steam is maybe delivered in overheated afterburning stove through vapours branch road through the main air intake of vapours secondary duct input steam turbine by this second burst of high parameter flow of superheated steam, with, optionally, the filling mouth of the low parameter superheated steam input steam turbine produced by the low parameter superheater of central cooler waste heat boiler, to allow Steam Turbine Driven generator generate electricity.
In the method described in the 4th or the 5th embodiment of the application i.e. the first or second method, preferably, the steam discharge of steam turbine enters in condenser and forms condensate water, and condensate water is connected to the cold waste heat boiler of ring or steelshop.The condensate water being connected to the cold waste heat boiler of ring is successively by the condensation water heater of central cooler waste heat boiler, low parameter evaporimeter, low parameter drum, low parameter superheater and produce low parameter superheated steam and be delivered to the filling mouth of steam turbine via the low parameter superheat steam pipeline of central cooler waste heat boiler.
In method i.e. the third method described in the 6th embodiment of the application, preferably, the steam discharge of steam turbine enters in condenser and forms condensate water, and condensate water is connected to the cold waste heat boiler of ring or steelshop.The condensate water being connected to the cold waste heat boiler of ring is successively by having the condensation water heater of the central cooler waste heat boiler of built-in high parameter superheater, low parameter evaporimeter, low parameter drum, low parameter superheater and produce low parameter superheated steam and be delivered to the filling mouth of steam turbine via the low parameter superheat steam pipeline of central cooler waste heat boiler.
In the method described in the 4th or the 5th embodiment of the application i.e. the first or second method, preferably, the steam discharge of steam turbine enters in condenser and forms condensate water, and condensate water is connected to the cold waste heat boiler of ring or steelshop.The condensate water being connected to the cold waste heat boiler of ring carries out deoxygenation by being transported in oxygen-eliminating device after the condensation water heater heating of central cooler waste heat boiler, from oxygen-eliminating device, discharge the water of deoxygenation and input in the low parameter drum of central cooler waste heat boiler, the water of discharging from the first outlet of low parameter drum is transported to the low parameter evaporimeter of central cooler waste heat boiler, the steam of discharging from low parameter evaporimeter returns in low parameter drum, the steam of discharging from the second outlet of low parameter drum is transfused to low parameter superheater, the low parameter superheated steam of discharging from low parameter superheater is transported to the filling mouth of steam turbine by low parameter superheat steam pipeline.
In method i.e. the third method described in the 6th embodiment of the application, preferably, the steam discharge of steam turbine enters in condenser and forms condensate water, and condensate water is connected to the cold waste heat boiler of ring or steelshop.The condensate water being connected to the cold waste heat boiler of ring carries out deoxygenation by being transported in oxygen-eliminating device after the condensation water heater heating with the central cooler waste heat boiler of built-in high parameter superheater, from oxygen-eliminating device, discharge the water of deoxygenation and input in the low parameter drum of central cooler waste heat boiler, the water of discharging from the first outlet of low parameter drum is transported to the low parameter evaporimeter of central cooler waste heat boiler, the steam of discharging from low parameter evaporimeter returns in low parameter drum, the steam of discharging from the second outlet of low parameter drum is transfused to low parameter superheater, the low parameter superheated steam of discharging from low parameter superheater is transported to the filling mouth of steam turbine by low parameter superheat steam pipeline.
In any one method described in the application, preferably, the water conservancy pump in low parameter drum via the first water supply branch road conveying water successively by the economizer of sintering smoke exhaust pipe waste heat boiler, sintering smoke exhaust pipe afterheat boiler evaporator, sintering smoke exhaust pipe waste heat boiler drum and produce high parameter saturated vapor and be delivered to the steam inlet of overheated afterburning stove via the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler.
More preferably, water conservancy pump in low parameter drum is conducted through the economizer of sintering smoke exhaust pipe waste heat boiler via the first water supply branch road, the water of discharging from economizer is transported in sintering smoke exhaust pipe waste heat boiler drum, the hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum is further by sintering smoke exhaust pipe afterheat boiler evaporator, the high parameter steam of discharging from evaporimeter returns in sintering smoke exhaust pipe waste heat boiler drum again, the high parameter steam of discharging from drum is transported to the steam inlet of overheated afterburning stove via the high parameter saturated vapor output channel sintering smoke exhaust pipe waste heat boiler.
In the method according to the 4th embodiment of the application and first method, preferably, water conservancy pump in low parameter drum is transferred via the second water supply branch road and produces high parameter saturated vapor by the high parameter economizer of central cooler waste heat boiler, high parameter evaporimeter, high parameter drum successively, and is delivered to the steam inlet of overheated afterburning stove via the high parameter saturated vapor output channel of central cooler waste heat boiler.
In the method according to the 5th embodiment of the application and second method, preferably, water conservancy pump in low parameter drum is transferred successively by the high parameter economizer of central cooler waste heat boiler via the second water supply branch road, high parameter evaporimeter, high parameter drum produces high parameter saturated vapor, and the steam inlet of the high parameter superheater of external type overheating device was delivered to via the high parameter saturated vapor output channel of central cooler waste heat boiler, heat further through external type overheating device, superheated steam through heating is further delivered to the primary air inlet of steam turbine through vapours secondary duct or is delivered to the steam inlet (being namely positioned at the steam inlet of the steam superheater of stove) of overheated afterburning stove through vapours branch road.
In method i.e. the third method according to the 6th embodiment of the application, preferably, water conservancy pump in low parameter drum is transferred successively by the high parameter economizer of built-in superheater central cooler waste heat boiler via the second water supply branch road, high parameter evaporimeter, high parameter drum produces high parameter saturated vapor, and the entrance of superheater is delivered to via the high parameter saturated vapor output channel of central cooler waste heat boiler, heat further through built-in superheater, superheated steam through heating is further delivered to the primary air inlet of steam turbine through vapours secondary duct or is delivered to the steam inlet (i.e. the steam inlet of steam superheater) of overheated afterburning stove through vapours branch road.
In the method according to the 4th embodiment of the application and first method, preferably, water conservancy pump in low parameter drum is transferred the high parameter economizer by central cooler waste heat boiler via the second water supply branch road, the water of discharging from high parameter economizer is via in the first entrance input high parameter drum of high parameter drum, the hot water of discharging from the first outlet of high parameter drum is also again returned in high parameter drum by the heating of high parameter evaporimeter and produces high parameter saturated vapor, then the steam inlet of overheated afterburning stove is delivered to via the high parameter saturated vapor output channel of central cooler waste heat boiler.
In the method according to the 5th embodiment of the application and second method, preferably, water conservancy pump in low parameter drum is transferred the high parameter economizer of the central cooler waste heat boiler by having external type overheating device via the second water supply branch road, the water of discharging from high parameter economizer is via in the first entrance input high parameter drum of high parameter drum, the hot water of discharging from the first outlet of high parameter drum is also again returned in high parameter drum by the heating of high parameter evaporimeter and produces high parameter saturated vapor, then the high parameter superheater entrance of external type overheating device was delivered to via the high parameter saturated vapor output channel of central cooler waste heat boiler, heat through high parameter superheater, the superheated steam exported from the outlet of high parameter superheater is delivered to the main air intake of steam turbine through vapours secondary duct further or is delivered to the steam inlet (i.e. the steam inlet of built-in steam superheater) of overheated afterburning stove further through vapours branch road.
In method i.e. the third method according to the 6th embodiment of the application, preferably, water conservancy pump in low parameter drum is transferred the high parameter economizer of the central cooler waste heat boiler by having built-in high parameter superheater via the second water supply branch road, the water of discharging from high parameter economizer is via in the first entrance input high parameter drum of high parameter drum, the hot water of discharging from the first outlet of high parameter drum is also again returned in high parameter drum by the heating of high parameter evaporimeter and produces high parameter saturated vapor, then the high parameter saturated vapor of discharging in high parameter drum is delivered to the entrance of high parameter superheater via the high parameter saturated vapor output channel of central cooler waste heat boiler, heat through high parameter superheater, the superheated steam of discharging from the outlet of high parameter superheater is via being delivered to the main air intake of steam turbine by superheated steam secondary duct or being delivered to the steam inlet (i.e. the steam inlet of steam superheater) of overheated afterburning stove through vapours branch road.
In the method according to the 4th embodiment of the application and first method, preferably, the two strands of saturated steam flowings carried via the high parameter saturated vapor output channel of central cooler waste heat boiler and the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler respectively enter respectively in the steam superheater of overheated afterburning stove and carry out overheated and produce superheated steam or described two strands of saturated steam flowings are undertaken overheated by the steam superheater in overheated afterburning stove after merging and produce superheated steam, then produced superheated steam is delivered to the main air intake of steam turbine.
In the method according to the 5th embodiment of the application and second method, preferably, the saturated vapor carried by the high parameter saturated vapor output channel of central cooler waste heat boiler is passed in external type overheating device and produces superheated steam, is then delivered to the main air intake of steam turbine or is delivered to the steam inlet of overheated afterburning stove through vapours branch road.In addition, the saturated vapor carried by the high parameter saturated vapor output channel of central cooler waste heat boiler is passed into the main air intake being transported to steam turbine after superheated steam that the steam superheater in the superheated steam and overheated afterburning stove produced in external type overheating device produces merges.
In method i.e. the third method according to the 6th embodiment of the application, preferably, the saturated vapor exported by the high parameter saturated vapor output channel of the central cooler waste heat boiler with built-in superheater is passed in high parameter superheater and produces superheated steam, is then delivered to the main air intake of steam turbine or is delivered to the steam inlet of overheated afterburning stove through vapours branch road.In addition, the saturated vapor carried by the high parameter saturated vapor output channel of the central cooler waste heat boiler with built-in superheater passes into the main air intake that superheated steam that the steam superheater in the superheated steam and overheated afterburning stove produced in high parameter superheater produces is delivered to steam turbine after merging.
In the method according to the 4th embodiment of the application and first method, preferably, central cooler flue gas is delivered to the smoke inlet end of central cooler waste heat boiler via the smoke evacuation of conveyance conduit and overheated afterburning stove respectively via high-temperature smoke discharging pipeline and forms mixing (high temperature) flue gas, this mixed flue gas successively with the high parameter evaporimeter being arranged on this central cooler waste heat boiler inside, high parameter economizer, low parameter superheater, low parameter evaporimeter and condensation water heater (central flow through water or steam) carry out indirect heat exchange, finally discharge from the smoke outlet of central cooler waste heat boiler.
In the method according to the 5th embodiment of the application and second method, preferably, be delivered to the smoke inlet of external type overheating device respectively via high-temperature smoke discharging pipeline via the smoke evacuation of conveyance conduit and overheated afterburning stove from the high-temperature flue gas of central cooler high-temperature region, the flue gas that external type overheating device is discharged and be transported to the smoke inlet end of central cooler waste heat boiler and form mixed flue gas through thermal smoke discharging pipe and middle temperature flue gas and/or low-temperature flue gas conveyance conduit from flue gas warm in warm area in central cooler and/or low-temperature space and/or low-temperature flue gas respectively, this mixed flue gas successively with the high parameter evaporimeter being arranged on this central cooler waste heat boiler inside, high parameter economizer, low parameter superheater, low parameter evaporimeter and condensation water heater (central flow through water or steam) carry out indirect heat exchange, finally discharge from the smoke outlet of central cooler waste heat boiler.
In method i.e. the third method according to the 6th embodiment of the application, preferably, respectively be delivered to the smoke inlet end of central cooler waste heat boiler via the smoke evacuation of conveyance conduit and overheated afterburning stove via high-temperature smoke discharging pipeline from the central cooler high-temperature flue gas of central cooler high-temperature region and form mixing (high temperature) flue gas, the high parameter superheater of this flue gas in central cooler waste heat boiler; In central cooler, warm flue gas and/or low-temperature flue gas are delivered to the second smoke inlet of central cooler waste heat boiler via conveyance conduit and mix with the high-temperature flue gas after have passed through high parameter superheater, this mixed flue gas successively be arranged on the high parameter evaporimeter of this central cooler waste heat boiler inside, high parameter economizer, low parameter superheater, low parameter evaporimeter and condensation water heater (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet of central cooler waste heat boiler.
In any one method described in the application, preferably, sintering device flue gas delivers in the entrance fan housing of sintering smoke exhaust pipe waste heat boiler via sintering device flue gas conveyance conduit and also carries out indirect heat exchange with the evaporimeter in sintering smoke exhaust pipe waste heat boiler and economizer (central flow through water or steam) successively, then discharges from the port of export of sintering smoke exhaust pipe waste heat boiler.
Preferably, gas pipeline transportation service coal gas enters overheated afterburning stove combustion through vulcanizing burner burner gas entry, the high-temperature flue gas produced that burns discharges high-temperature flue gas through the high-temperature smoke discharging mouth vulcanizing burner after carrying out indirect heat exchange with the steam superheater (central flow through water or steam) in overheated afterburning stove, and this high-temperature flue gas is by the smoke inlet end of high-temperature smoke discharging Cemented filling to central cooler waste heat boiler or the smoke inlet end of external superheater, meanwhile, normal temperature air is transported to the air of air inlet of combustor as gas-fired of overheated afterburning stove by air blast.
In any one method described in the application, preferably, the pressure of the superheated steam that overheated afterburning stove or built-in high parameter superheater or external superheater (17) produce is >=0.60MPa, preferably >=1.0MPa, such as pressure is 0.6MPa-2.5MPa, preferred 0.8MPa-2.0MPa, more preferably 1.0MPa-1.8MPa, or its temperature be >=350 DEG C, preferably >=360 DEG C, such as its temperature is 370 DEG C-460 DEG C, preferably 380-450 DEG C, more preferably 390 DEG C-430 DEG C.
In any one method described in the application, preferably, the pressure of the low parameter superheated steam of central cooler waste heat boiler low parameter superheater generation is 0.3MPa to 0.6MPa, preferred 0.3MPa to 0.5MPa,, or its temperature is 160 DEG C-300 DEG C, preferably 170 DEG C-280 DEG C.
Central cooler flue gas comprises from warm flue gas or the central cooler low-temperature flue gas from central cooler low-temperature space in the central cooler high-temperature flue gas of central cooler high-temperature region, central cooler from warm area in central cooler.
The condensate water that condensate water in the utility model can select the condenser in TRT to produce, also can replace with chemical demineralizing water or supplement.
The flue gas that sintering smoke exhaust pipe waste heat boiler is extracted out by air-introduced machine, can return sintering device flue gas pipeline again, discharge after also caning be passed through process.
The flue gas that central cooler waste heat boiler is extracted out by air-introduced machine, can return central cooler flue again, discharges after also caning be passed through process.
The actual pressure situation of the saturated vapor that the saturated vapor that the utility model can produce according to sintering smoke exhaust pipe waste heat boiler, central cooler waste heat boiler produce, regulate the inflow of sintering smoke exhaust pipe waste heat boiler, sintering smoke exhaust pipe Economizer of Heat Recovery Boiler and sintering smoke exhaust pipe afterheat boiler evaporator working condition, regulate sintering smoke exhaust pipe waste heat boiler to produce the pressure and temperature of saturated vapor.Also can the working condition of the inflow of adjustable ring cold waste heat boiler, central cooler Economizer of Heat Recovery Boiler and central cooler waste heat boiler high parameter evaporimeter, adjustable ring cold waste heat boiler produces the pressure and temperature of saturated vapor.Make the pressure match of two parts steam, after two strands of steam merge, access overheated afterburning stove.The steam pressure of Converter Steam accumulator outlet, can adjust according to the steam pressure situation of waste heat boiler, to make the steam pressure matching of steam pressure and waste heat boiler.
The utility model smoke exhaust pipe is provided with control valve and diffusion valve, can regulate according to combustion conditions.
The unaccounted device of the utility model and equipment are common device and the device of this area.
In this application, " optionally " expression is carried out or is not carried out." optional " expression is with or without.
Compared to prior art, Advantageous Effects of the present utility model:
1, the utility model only produces high parameter saturated vapor (or cryogenic overheating steam) and low parameter superheated steam because of waste heat boiler, reduces the requirement to flue-gas temperature, improves the utilization rate of sintering waste heat; When sintering and getting wind fluctuation of operating conditions, outlet vapor parameter stability, can ensure the stable operation of steam turbine.
2, the approach temperature point because of flue gas and steam in the utility model is large, can reduce heating surface area, reduces equipment cost, reduces investment.
3, in the utility model, overheated afterburning stove is gas boiler, and technology maturation is reliable, and the stability of a system is good.
4, the utility model takes full advantage of the residual gas of the steel-making waste heat of iron and steel enterprise, sintering smoke discharging residual heat, sintering circular-cooler waste heat and iron and steel enterprise, effectively reduces the energy consumption of iron and steel enterprise.By low-grade saturated vapor, transfer superheated steam generation to, improve the generating thermal efficiency.
5, the utility model to a generating set, will save floor space and cost of investment by residual heat and energy resource aggregation everywhere, also save operating cost simultaneously.
6, the utility model system cloud gray model is flexible, fault or when stopping transport, generating set does not need to shut down in a certain respect in residual heat system.
Accompanying drawing explanation
Fig. 1 is the utility model device flow chart
Fig. 2 is the another kind of design structure diagram of the utility model
Fig. 3 is the third design structure diagram of the utility model
Fig. 4 is the utility model generator, steam turbine, condenser partial enlarged drawing
Fig. 5 is the utility model overheated afterburning stove partial enlarged drawing
Fig. 6 is the utility model sintering smoke exhaust pipe waste heat boiler partial enlarged drawing
Fig. 7 is the utility model central cooler waste heat boiler partial enlarged drawing
Fig. 8 is the utility model central cooler waste heat boiler another kind design partial enlarged drawing
Fig. 9 is the utility model built-in superheater central cooler waste heat boiler partial enlarged drawing
Figure 10 is the utility model steelmaking converter drum, Converter Steam storage heater partial enlarged drawing
Figure 11 is the another kind of design drawing of the utility model built-in superheater central cooler waste heat boiler
Figure 12 is the utility model central cooler waste heat boiler and central cooler connection diagram
Accompanying drawing illustrates: 1, generator; 2, steam turbine; 201, steam turbine primary air inlet; 202 steam turbine filling mouths; 203, gas turbine exhaust gas mouth; 204, rotating shaft of steam turbine; 3, condenser; 301, condenser drainpipe; 4, overheated afterburning stove; 401, overheated afterburning stove steam superheater; 402, overheated afterburning stove saturated vapor entrance; 403, overheated afterburning stove superheated steam outlet; 404, overheated afterburning burner gas entry; 405, overheated afterburning burner air intake or air inlet; 406, overheated afterburning stove high-temperature smoke discharging mouth; 407, burner; 5, smoke exhaust pipe waste heat boiler is sintered; 501, smoke exhaust pipe Economizer of Heat Recovery Boiler is sintered; 50101, smoke exhaust pipe Economizer of Heat Recovery Boiler entrance is sintered; 50102, the outlet of smoke exhaust pipe Economizer of Heat Recovery Boiler is sintered; 502, smoke exhaust pipe afterheat boiler evaporator is sintered; 50201, smoke exhaust pipe afterheat boiler evaporator entrance is sintered; 50202, the outlet of smoke exhaust pipe afterheat boiler evaporator is sintered; 503, smoke exhaust pipe waste heat boiler drum is sintered; 50301, smoke exhaust pipe waste heat boiler drum first entrance is sintered; 50302, sinter smoke exhaust pipe waste heat boiler drum first to export; 50303, smoke exhaust pipe waste heat boiler drum second entrance is sintered; 50304, sinter smoke exhaust pipe waste heat boiler drum second to export; 504 sintering smoke exhaust pipe waste heat boiler water inlets; 505, smoke exhaust pipe exhaust-heat boiler inlet fan housing is sintered; 506, smoke exhaust pipe heat boiler outlet bellows are sintered; 6, central cooler waste heat boiler; 601, the external feed-water heater of central cooler waste heat boiler or condensation water heater; 60101, the external feed-water heater of central cooler waste heat boiler or condensation water heater entrance; 60102, the external feed-water heater of central cooler waste heat boiler or condensation water heater outlet; 602, central cooler waste heat boiler low parameter evaporimeter; 60201, central cooler waste heat boiler low parameter evaporator inlet; 60202, central cooler waste heat boiler low parameter evaporator outlet; 603, central cooler waste heat boiler low parameter drum; 60301, central cooler waste heat boiler low parameter drum first entrance; 60302, central cooler waste heat boiler low parameter drum first exports; 60303, central cooler waste heat boiler low parameter drum second entrance; 60304, central cooler waste heat boiler low parameter drum second exports; 60305, central cooler waste heat boiler low parameter drum the 3rd exports (delivery port); 604, central cooler waste heat boiler low parameter superheater; 60401, central cooler waste heat boiler low parameter superheater entrance; 60402, central cooler waste heat boiler low parameter superheater outlet; 605, central cooler waste heat boiler high parameter economizer; 60501, central cooler waste heat boiler high parameter economizer entrance; 60502, central cooler waste heat boiler high parameter economizer exit; 606, central cooler waste heat boiler high parameter evaporimeter; 60601, central cooler waste heat boiler high parameter evaporator inlet; 60602, central cooler waste heat boiler high parameter evaporator outlet; 607, central cooler waste heat boiler high parameter drum; 60701, central cooler waste heat boiler high parameter drum first entrance; 60702, central cooler waste heat boiler high parameter drum first exports; 60703, central cooler waste heat boiler high parameter drum second entrance; 60704, central cooler waste heat boiler high parameter drum second exports; 608, central cooler heat boiler outlet bellows; 609, central cooler exhaust-heat boiler flue gas arrival end; 609a, central cooler waste heat boiler second smoke inlet; 610, the built-in superheater of central cooler waste heat boiler; 61001, central cooler waste-heat boiler superheater entrance; 61002, central cooler waste-heat boiler superheater outlet; 7, water pump; 701, water pump first supplies water branch road; 702, water pump second supplies water branch road; 8, Converter Steam storage heater; 801, Converter Steam accumulator inlet; 802, Converter Steam accumulator outlet; 803, Converter Steam accumulator outlet steam pressure control valve group; 804, Converter Steam storage heater check-valves; 805, Converter Steam storage heater drainpipe; 806, Converter Steam storage heater draining valve; 9, steelmaking converter drum; 901, steelmaking converter drum entrance; 902, steelmaking converter drum outlet; 903, steelmaking converter drum outlet vapor pressure-regulating valve group; 904, steelmaking converter drum outlet non-return valve; 905, tube connector; 10, coal gas; 1001, gas piping; 11, air blast, 12, sintering device flue gas; 1201, sintering device flue gas pipeline; 13, external feedwater carrier pipe or condensate water conveyance conduit, 14, air-introduced machine; 1501, central cooler high-temperature flue gas; 1502, gentle low-temperature flue gas in central cooler; 16, oxygen-eliminating device; 17, external type overheating device; 1701, superheater; 170101, superheater entrance; 170102, superheater outlet; 18, atmospheric valve; 19, smoke exhaust pipe control valve; 20, central cooler;
L1, L1a: superheated steam main pipeline; L1b: superheated steam secondary duct; L2, L2a, L2b, L2c: saturated vapor pipeline; L2d: superheated steam branch road; L3, low parameter superheat steam pipeline; L4, high-temperature smoke discharging pipeline; L5, central cooler flue; L5a, central cooler high-temperature flue gas pipeline, temperature and/or low-temperature flue gas pipeline in L5b, central cooler; L4a, external superheater smoke discharging pipe; V1: the first steam valve; V1: the second steam valve.
Detailed description of the invention
The first embodiment that the utility model provides:
A kind of coal gas and Converter Steam and sintering waste heat combined power generation device, this device comprises generator 1, steam turbine 2, condenser 3, overheated afterburning stove 4, the Converter Steam storage heater 8 that sinters smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6, steelmaking converter drum 9 and be connected with steelmaking converter drum 9.Wherein: the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe the waste heat boiler 5 and high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is connected to the steam inlet 402 of overheated afterburning stove 4, and the steam (vapor) outlet 403 of overheated afterburning stove 4 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1; Central cooler waste heat boiler 6 has high parameter drum 607, and the high parameter saturated vapor output channel L2a drawn from the high parameter drum 607 of central cooler waste heat boiler 6 is also connected to the steam inlet 402 of overheated afterburning stove 4; The rotating shaft 204 of steam turbine 2 connects or drives the rotating shaft of generator 1, and the steam drain 203 of steam turbine 2 is connected to condenser 3; And optionally, the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 202 of steam turbine.
As preferably, in sintering smoke exhaust pipe waste heat boiler 5, be provided with economizer 501, evaporimeter 502 be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum 503.
As preferably, this device is provided with water pump 7.The outlet of water pump 7 is connected to the water inlet 504 of the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 by the first water supply branch road 701.The outlet 50101 of economizer 501 is connected to the first entrance 50301 of the drum 503 of sintering smoke exhaust pipe waste heat boiler 5.First outlet 50302 of drum 503 is connected with the entrance 50201 of evaporimeter 502.The outlet 50202 of evaporimeter 502 is connected with the second entrance 50303 of drum 503.Second outlet of drum 503 and high parameter steam (vapor) outlet 50304 are connected with the steam inlet 402 of overheated afterburning stove 4 by saturated vapor pipeline L2b.
Preferably, the outlet bellows 506 sintering smoke exhaust pipe waste heat boiler 5 are connected with air-introduced machine 14.
Preferably, the entrance fan housing 505 of this sintering smoke exhaust pipe waste heat boiler 5 connects sintering device flue gas conveyance conduit 1201.
As preferably, be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605 and high parameter evaporimeter 606 in central cooler waste heat boiler 6 and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.
As preferably, device also has oxygen-eliminating device 16 to be connected with central cooler waste heat boiler low parameter drum 603.External feedwater carrier pipe 13 or be connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6 from the condensate water carrier pipe 13 that the delivery port of condenser 3 is drawn.The outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 16.The delivery port of oxygen-eliminating device 16 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6.First outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602.The outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603.Second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, and the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
As preferably, the smoke inlet end 609 that device also has the conveyance conduit L5 of central cooler flue gas 15 (such as from the high-temperature region of central cooler or the flue gas of middle warm area) and high-temperature smoke discharging pipeline L4 to be connected to central cooler waste heat boiler 6 is respectively connected to the smoke inlet end 609 of central cooler waste heat boiler 6.The outlet of water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of central cooler waste heat boiler 6.The outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, and the second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the steam inlet 402 of overheated afterburning stove 4 by saturated vapor pipeline L2a.
Preferably, the outlet bellows 608 of central cooler waste heat boiler 6 are connected with air-introduced machine 14.
As preferably, the outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 801 of Converter Steam storage heater 8.The high parameter steam (vapor) outlet 802 of Converter Steam storage heater 8 is connected with the steam inlet 402 of overheated afterburning stove by the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8.
As preferably, in overheated afterburning stove 4, be provided with steam superheater 401, burner 407 and air blast 11, be connected to overheated afterburning burner 407 gas entry 404 by gas piping 10.Air blast 11 connects the air inlet of combustor 405 of overheated afterburning stove 4.The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet end 609 of central cooler waste heat boiler 6 by high-temperature smoke discharging pipeline L4.
As preferably, the rotating shaft 204 of steam turbine connects or drives the rotating shaft of generator 1.The steam drain 203 of steam turbine is connected with condenser 3.The condensate water efferent duct 301 of condenser 3 is connected to the condensate water carrier pipe 13 of central cooler waste heat boiler 6.
As preferably, the low parameter drum 603 of central cooler waste heat boiler 6 has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7.The delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.
As preferably, high-temperature smoke discharging pipeline L4 is provided with smoke exhaust pipe control valve 19.
As preferably, high-temperature smoke discharging pipeline L4 is provided with atmospheric valve 18.
As preferably, the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with Converter Steam storage heater steam pressure control valve group 803.
As preferably, the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with the check-valves 804 of Converter Steam storage heater 8.
As preferably, steelmaking converter steam pressure control valve group 903 is made up of 1-2 group control valve.
As preferably, Converter Steam storage heater control valve group 803 is made up of 1-2 group control valve.
As preferably, bottom Converter Steam storage heater 8, be also provided with drainpipe 805.
As preferably, bottom Converter Steam storage heater 8, be also provided with draining valve 806.
As preferably, sinter smoke exhaust pipe waste heat boiler 5 for singly to press wet steamer.
As preferably, steam turbine 2 is condensing steam compensating turbine.
As preferably, sintering circular-cooler waste heat boiler 6 is dual voltage type waste heat boiler.
The second embodiment that the utility model provides:
A kind of coal gas and Converter Steam and sintering waste heat combined power generation device, this device comprises generator 1, steam turbine 2, condenser 3, overheated afterburning stove 4, sintering smoke exhaust pipe waste heat boiler 5, there is the central cooler waste heat boiler 6 of external type overheating device 17, steelmaking converter drum 9 and the Converter Steam storage heater 8 be connected with steelmaking converter drum 9, wherein: the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe the waste heat boiler 5 and high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is connected to the steam inlet 402 of overheated afterburning stove 4, the steam (vapor) outlet 403 of overheated afterburning stove 4 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1a, central cooler waste heat boiler 6 has high parameter drum 607, the high parameter saturated vapor output channel L2a drawn from the high parameter drum 607 of central cooler waste heat boiler 6 is connected to the steam inlet 170101 of the high parameter superheater (1701) of external type overheating device 17, and the steam (vapor) outlet 170102 of this high parameter superheater 1701 is connected to the main air intake 201 of steam turbine 2 respectively by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b and/or is connected to the steam inlet 402 of overheated afterburning stove 4 by superheated steam branch road L2d, with, the rotating shaft of steam turbine 2 connects or drives the rotating shaft of generator 1, and the steam drain of steam turbine 2 is connected to condenser 3, and optionally, the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 202 of steam turbine 2.
Generally, superheated steam secondary duct L1b and superheated steam branch road L2d is set up in parallel, or separates superheated steam branch road L2d from superheated steam secondary duct L1b.Both are connected to the main air intake of steam turbine and the steam inlet 402 of overheated afterburning stove 4 respectively.
Preferably, the first valve V1 is set on L1b pipeline after the branch point that L1b and L2d intersects, the second valve V2 is set on L2d pipeline simultaneously.Or switch valve is set at the branch point place that L1b and L2d intersects.When the flue-gas temperature of the high-temperature region from central cooler higher (such as higher than 360 DEG C), open the first valve V1 and close the second valve V2 or open by switch valve passage and the closedown L2c that L1b back segment flows to the main air intake of steam turbine.And when the flue-gas temperature of the high-temperature region from central cooler is on the low side, timely closedown first valve V1 also opens the second valve V2 or opens L2d by switch valve in time and cut off the passage that L1b back segment flows to the main air intake of steam turbine, the even running of maintenance system, guarantees that high efficiency generates electricity.
As preferably, in sintering smoke exhaust pipe waste heat boiler 5, be provided with economizer 501, evaporimeter 502 be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum 503.
As preferably, this device is provided with water pump 7.The outlet of water pump 7 is connected to the water inlet 504 of the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 by the first water supply branch road 701.The outlet 50101 of economizer 501 is connected to the first entrance 50301 of the drum 503 of sintering smoke exhaust pipe waste heat boiler 5.First outlet 50302 of drum 503 is connected with the entrance 50201 of evaporimeter 502.The outlet 50202 of evaporimeter 502 is connected with the second entrance 50303 of drum 503.Second outlet of drum 503 and high parameter steam (vapor) outlet 50304 are connected with the steam inlet 402 of overheated afterburning stove 4 by saturated vapor pipeline L2b.
Preferably, the outlet bellows 506 sintering smoke exhaust pipe waste heat boiler 5 are connected with air-introduced machine 14.
Preferably, the entrance fan housing 505 of this sintering smoke exhaust pipe waste heat boiler 5 connects sintering device flue gas conveyance conduit 1201.
As preferably, be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605 and high parameter evaporimeter 606 in central cooler waste heat boiler 6 and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.
As preferably, device also has oxygen-eliminating device 16 to be connected with central cooler waste heat boiler low parameter drum 603.External feedwater carrier pipe 13 or be connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6 from the condensate water carrier pipe 13 that the delivery port of condenser 3 is drawn.The outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 16.The delivery port of oxygen-eliminating device 16 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6.First outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602.The outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603.Second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, and the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
As preferably, the outlet of water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of central cooler waste heat boiler 6.The outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, and the second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the steam inlet 170101 of external superheater 1701 by saturated vapor pipeline L2a.The steam (vapor) outlet 170102 of external superheater 1701 connects the primary air inlet 201 referring to steam turbine 2 by superheat steam pipeline L1b.
Preferably, the outlet bellows 608 of central cooler waste heat boiler 6 are connected with air-introduced machine 14.
As preferably, device also has central cooler high-temperature flue gas (namely from the flue gas of the high-temperature region of central cooler) 1501 pipeline L5a to be connected with the smoke inlet of external type overheating device 17 with overheated afterburning stove high-temperature smoke discharging pipeline L4.The exhanst gas outlet of external type overheating device 17 is connected with the smoke inlet 609 of central cooler 6 by superheater flue L4a.
As preferably, the outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 801 of Converter Steam storage heater 8.The high parameter steam (vapor) outlet 802 of Converter Steam storage heater 8 is connected with the steam inlet 402 of overheated afterburning stove by the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8.
Preferably, steam superheater 401, burner 407 and air blast 11 is provided with in overheated afterburning stove 4; Gas piping 10 is had to be connected to overheated afterburning burner 407 gas entry 404.Air blast 11 connects the air inlet of combustor 405 of overheated afterburning stove 4.
The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet end 609 of central cooler waste heat boiler 6 by high-temperature smoke discharging pipeline L4.More preferably, the high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet of external type overheating device 17 by high-temperature smoke discharging pipeline L4.
Preferably, the rotating shaft 204 of steam turbine connects or drives the rotating shaft of generator 1, and the steam drain 203 of steam turbine is connected with condenser 3, and the condensate water efferent duct 301 of condenser 3 is connected to external feedwater carrier pipe 13 or the condensate water carrier pipe 13 of central cooler waste heat boiler 6.
As preferably, the low parameter drum 603 of central cooler waste heat boiler 6 has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7.The delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.
High-temperature smoke discharging pipeline L4 is provided with smoke exhaust pipe control valve 19.High-temperature smoke discharging pipeline L4 is provided with atmospheric valve 18.
As preferably, the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with Converter Steam accumulator outlet steam pressure control valve group 803.
As preferably, the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with the check-valves 804 of Converter Steam storage heater 8.
As preferably, steelmaking converter drum outlet vapor pressure-regulating valve group 903 is made up of 1-2 group control valve.
As preferably, Converter Steam storage heater control valve group 803 is made up of 1-2 group control valve.
Preferably, drainpipe 805 is also provided with bottom Converter Steam storage heater 8.Preferably, draining valve 806 is also provided with bottom Converter Steam storage heater 8.Sintering smoke exhaust pipe waste heat boiler 5 is for singly to press wet steamer.
Preferably, steam turbine 2 is condensing steam compensating turbine.Sintering circular-cooler waste heat boiler 6 is dual voltage type waste heat boiler.
The third embodiment that the utility model provides:
A kind of coal gas and Converter Steam and sintering waste heat combined power generation device, this device comprises generator 1, steam turbine 2, condenser 3, overheated afterburning stove 4, sintering smoke exhaust pipe waste heat boiler 5, there is the central cooler waste heat boiler 6a of built-in superheater 610, steelmaking converter drum 9 and the Converter Steam storage heater 8 be connected with steelmaking converter drum 9, wherein: the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe the waste heat boiler 5 and high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is connected to the steam inlet 402 of overheated afterburning stove 4, the steam (vapor) outlet 403 of overheated afterburning stove 4 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1a, central cooler waste heat boiler 6a has high parameter drum 607, the high parameter saturated vapor output channel L2a drawn from the high parameter drum 607 of central cooler waste heat boiler 6a is connected to the steam inlet 61001 of the built-in high parameter superheater 610 in central cooler waste heat boiler 6a, and in central cooler waste heat boiler 6a, the steam (vapor) outlet 61002 of high parameter superheater 610 is connected to the main air intake 210 of steam turbine 2 respectively by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b and/or is connected to the steam inlet 402 of overheated afterburning stove 4 by superheated steam branch road L2d, with
The rotating shaft of steam turbine 2 connects or drives the rotating shaft of generator 1, and the steam drain of steam turbine 2 is connected to condenser 3, and optionally, the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6a is connected to the filling mouth 202 of steam turbine 2.
Generally, superheated steam secondary duct L1b and superheated steam branch road L2d is set up in parallel, or separates superheated steam branch road L2d from superheated steam secondary duct L1b.Both are connected to the main air intake of steam turbine and the steam inlet 402 of overheated afterburning stove 4 respectively.
Preferably, the first valve V1 is set on L1b pipeline after the branch point that L1b and L2d intersects, the second valve V2 is set on L2d pipeline simultaneously.Or switch valve is set at the branch point place that L1b and L2d intersects.When the flue-gas temperature of the high-temperature region from central cooler higher (such as higher than 360 DEG C), open the first valve V1 and close the second valve V2 or open by switch valve passage and the closedown L2c that L1b back segment flows to the main air intake of steam turbine.And when the flue-gas temperature of the high-temperature region from central cooler is on the low side, timely closedown first valve V1 also opens the second valve V2 or opens L2d by switch valve in time and cut off the passage that L1b back segment flows to the main air intake of steam turbine, the even running of maintenance system, guarantees that high efficiency generates electricity.
As preferably, in sintering smoke exhaust pipe waste heat boiler 5, be provided with economizer 501, evaporimeter 502 be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum 503.
As preferably, this device is provided with water pump 7.The outlet of water pump 7 is connected to the water inlet 504 of the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 by the first water supply branch road 701.The outlet 50101 of economizer 501 is connected to the first entrance 50301 of the drum 503 of sintering smoke exhaust pipe waste heat boiler 5.First outlet 50302 of drum 503 is connected with the entrance 50201 of evaporimeter 502.The outlet 50202 of evaporimeter 502 is connected with the second entrance 50303 of drum 503.Second outlet of drum 503 and high parameter steam (vapor) outlet 50304 are connected with the steam inlet 402 of overheated afterburning stove 4 by saturated vapor pipeline L2b.
Preferably, the outlet bellows 506 sintering smoke exhaust pipe waste heat boiler 5 are connected with air-introduced machine 14.
Preferably, the entrance fan housing 505 of this sintering smoke exhaust pipe waste heat boiler 5 connects sintering device flue gas conveyance conduit 1201.
As preferably, the outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 801 of Converter Steam storage heater 8.The high parameter steam (vapor) outlet 802 of Converter Steam storage heater 8 is connected with the steam inlet 402 of overheated afterburning stove by the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8.
As preferably, device also has oxygen-eliminating device 16 to be connected with central cooler waste heat boiler low parameter drum 603.External feedwater carrier pipe 13 or be connected to the entrance 60101 of condensation water heater 601 of built-in superheater central cooler waste heat boiler 6a from the condensate water carrier pipe 13 that the delivery port of condenser 3 is drawn.The outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 16.The delivery port of oxygen-eliminating device 16 is connected with the first entrance 60301 of the low parameter drum 603 of built-in superheater central cooler waste heat boiler 6a.First outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602.The outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603.Second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, and the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
As preferably, be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605, high parameter evaporimeter 606 and high parameter superheater 610 in the central cooler waste heat boiler 6a with built-in high parameter superheater 610, and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.
As preferably, device also has the conveyance conduit L5a of central cooler high-temperature flue gas 1501 and high-temperature smoke discharging pipeline L4 to be connected to the smoke inlet end 609 of built-in superheater central cooler waste heat boiler 6a respectively.In central cooler waste heat boiler, the conveyance conduit L5b of gentle low-temperature flue gas 1502 is connected to the second smoke inlet 609a of central cooler waste heat boiler 6a.Device also has oxygen-eliminating device 16 to be connected with central cooler waste heat boiler low parameter drum 603.External feedwater carrier pipe 13 or be connected to the entrance 60101 of condensation water heater 601 of built-in superheater central cooler waste heat boiler 6a from the condensate water carrier pipe 13 that the delivery port of condenser 3 is drawn, the outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 16.The delivery port of oxygen-eliminating device 16 is connected with the first entrance 60301 of the low parameter drum 603 of built-in superheater central cooler waste heat boiler 6a, first outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602, the outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603, second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
As preferably, the outlet of water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of built-in superheater central cooler waste heat boiler 6a.The outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607.First outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, and the second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the steam inlet 61001 of superheater 610 by saturated vapor pipeline L2a.The steam (vapor) outlet 61002 of superheater 610 connects the primary air inlet 201 of steam turbine 2 by superheat steam pipeline L1b.Preferably, the outlet bellows 608 with the cold waste heat boiler 6a of built-in superheater ring 610 are connected with air-introduced machine 14.
As preferably, in overheated afterburning stove 4, be provided with steam superheater 401, burner 407 and air blast 11, be connected to overheated afterburning burner 407 gas entry 404 by gas piping 10.Air blast 11 connects the air inlet of combustor 405 of overheated afterburning stove 4.The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet end 609 of the central cooler waste heat boiler 6a with built-in superheater 610 by high-temperature smoke discharging pipeline L4.
As preferably, the rotating shaft 204 of steam turbine connects or drives the rotating shaft of generator 1.The steam drain 203 of steam turbine is connected with condenser 3.The condensate water efferent duct 301 of condenser 3 is connected to external feedwater carrier pipe 13 or the condensate water carrier pipe 13 of the central cooler waste heat boiler 6a with built-in superheater 610.
As preferably, the low parameter drum 603 with the central cooler waste heat boiler 6a of built-in superheater 610 has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7.The delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.
High-temperature smoke discharging pipeline L4 is provided with smoke exhaust pipe control valve 19.High-temperature smoke discharging pipeline L4 is provided with atmospheric valve 18.
As preferably, the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with Converter Steam accumulator outlet steam pressure control valve group 803.
As preferably, the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with the check-valves 804 of Converter Steam storage heater 8.
As preferably, steelmaking converter drum outlet vapor pressure-regulating valve group 903 is made up of 1-2 group control valve.
As preferably, Converter Steam storage heater control valve group 803 is made up of 1-2 group control valve.
Preferably, drainpipe 805 is also provided with bottom Converter Steam storage heater 8.
Preferably, draining valve 806 is also provided with bottom Converter Steam storage heater 8.Sintering smoke exhaust pipe waste heat boiler 5 is for singly to press wet steamer.
Preferably, steam turbine 2 is condensing steam compensating turbine.Built-in superheater central cooler waste heat boiler 6a is dual voltage type waste heat boiler.
The 4th kind of embodiment that the utility model provides:
A kind of method of coal gas and Converter Steam and sintering waste heat cogeneration, the method comprises: sintering smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6 and Converter Steam storage heater 8 produce, via respective high parameter saturated vapor output channel L2b, three strands of saturated vapors that L2a and L2c carries flow through overheated afterburning stove 4 to carry out overheated and produces high parameter superheated steam, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1, with, optionally, the filling mouth of the low parameter superheated steam input steam turbine 2 that the low parameter superheater 604 of central cooler waste heat boiler 6 is produced, to allow steam turbine 2 drive generator 1 to generate electricity.
As preferably, the steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water 13.Condensate water returns workshop or condensate water 13 successively by the condensation water heater 601 of central cooler waste heat boiler 6, low parameter evaporimeter 602, low parameter drum 603, low parameter superheater 604 and produce low parameter superheated steam and be delivered to the filling mouth 202 of steam turbine 2 via the low parameter superheat steam pipeline L3 of central cooler waste heat boiler 6.
As preferably, the steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water 13.Condensate water returns to workshop or condensate water 13 carries out deoxygenation by being transported in oxygen-eliminating device 16 after condensation water heater 601 heating of central cooler waste heat boiler 6, discharges the water of deoxygenation and input in the low parameter drum 603 of central cooler waste heat boiler 6 from oxygen-eliminating device 16.The water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of central cooler waste heat boiler 6, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, and the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604.The low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
As preferably, the water conservancy pump 7 in low parameter drum 603 carries water successively by the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5, sintering smoke exhaust pipe afterheat boiler evaporator 502, sintering smoke exhaust pipe waste heat boiler drum 503 and produce high parameter saturated vapor and be delivered to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701.
As preferably, the water conservancy pump 7 in low parameter drum 603 is conducted through the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701, and the water of discharging from economizer 501 is transported in sintering smoke exhaust pipe waste heat boiler drum 503.The hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum 503 is further by sintering smoke exhaust pipe afterheat boiler evaporator 502, the high parameter steam of discharging from evaporimeter 502 returns in drum 503 again, and the high parameter steam of discharging from drum 503 is transported to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b sintering smoke exhaust pipe waste heat boiler 5.
As preferably, water conservancy pump 7 in low parameter drum 603 is transferred via the second water supply branch road 702 and produces high parameter saturated vapor by the high parameter economizer 605 of central cooler waste heat boiler 6, high parameter evaporimeter 606, high parameter drum 607 successively, and is delivered to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.
As preferably, water conservancy pump 7 in low parameter drum 603 is transferred the high parameter economizer 605 by central cooler waste heat boiler 6 via the second water supply branch road 702, and the water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607.The hot water of discharging from first of high parameter drum 607 the outlet 60702 is heated by high parameter evaporimeter 606 and is again returned in high parameter drum 607 and produces high parameter saturated vapor, is then delivered to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.
As preferably, steelmaking converter drum 9 is interrupted the steam produced and enters in Converter Steam storage heater 8.Continuous print saturated vapor is exported from the high parameter steam (vapor) outlet of Converter Steam storage heater 8.
As preferably, respectively via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6, the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe waste heat boiler 5, three strands of saturated steam flowings that the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 carries are undertaken overheated by the steam superheater 401 in overheated afterburning stove 4 after merging and produce superheated steam or described three strands of saturated steam flowings and enter respectively and carry out overheated in the steam superheater 401 of overheated afterburning stove 4 and produce superheated steam, then produced superheated steam is delivered to the main air intake 201 of steam turbine 2.
As preferably, central cooler flue gas 15 is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6 via the smoke evacuation of conveyance conduit 1501 and overheated afterburning stove 4 respectively via high-temperature smoke discharging pipeline L4 and forms mixed flue gas, this mixed flue gas successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6 inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6.
As preferably, sintering device flue gas 12 delivers in the entrance fan housing 505 of sintering smoke exhaust pipe waste heat boiler 5 via sintering device flue gas conveyance conduit 1201 and also carries out indirect heat exchange with the evaporimeter 502 in sintering smoke exhaust pipe waste heat boiler 5 and economizer 501 (central flow through water or steam) successively, then discharges from the port of export 506 of sintering smoke exhaust pipe waste heat boiler 5.
As preferably, gas piping 10 carries coal gas to enter overheated afterburning stove 4 combustion through vulcanizing burner burner gas entry 404.The high-temperature flue gas produced that burns discharges high-temperature flue gas through the high-temperature smoke discharging mouth 406 vulcanizing burner 4 after carrying out indirect heat exchange with the steam superheater 401 (central flow through water or steam) in overheated afterburning stove 4, and this high-temperature flue gas is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6 by high-temperature smoke discharging pipeline L4.Meanwhile, normal temperature air is transported to the air of air inlet of combustor 405 as gas-fired of overheated afterburning stove 4 by air blast 11.
Usually, the pressure of the superheated steam that overheated afterburning stove 4 produces is >=0.60MPa, and preferably >=1.0MPa, such as pressure is 0.6MPa-2.5MPa, preferred 0.8MPa-2.0MPa, more preferably 1.0MPa-1.8MPa.
Usually, the temperature of the superheated steam that overheated afterburning stove 4 produces is >=350 DEG C, preferably >=360 DEG C, such as its temperature is 370 DEG C-460 DEG C, preferably-450 DEG C, more preferably 390 DEG C-450 DEG C.
Usually, the pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 0.3MPa to 0.6MPa, preferred 0.3MPa to 0.5MPa,
Usually, the temperature of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 160 DEG C-300 DEG C, preferably 170 DEG C-280 DEG C.
The 5th kind of embodiment that the utility model provides:
A kind of method of coal gas and Converter Steam and sintering waste heat cogeneration, the method comprises: two strands of saturated steam flowings that sintering smoke exhaust pipe waste heat boiler 5 and Converter Steam storage heater 8 produce, that carry via respective high parameter saturated vapor output channel L2b and L2c are delivered to and carry out overheated in overheated afterburning stove 4 and produce first burst of high parameter flow of superheated steam, then this first burst of high parameter flow of superheated steam are inputted the main air intake of steam turbine 2 through vapours main pipeline L1a, the saturated vapor that central cooler waste heat boiler 6 produces is transported in external type overheating device 17 via its high parameter saturated vapor output channel L2a and carries out overheated and produce second burst of high parameter flow of superheated steam, this second burst of high parameter flow of superheated steam is maybe delivered to (i.e. the steam inlet 402 of overheated afterburning stove 4) in overheated afterburning stove 4 through vapours branch road L2d by the main air intake that this second burst of high parameter flow of superheated steam inputs steam turbine 2 through vapours secondary duct L1b, with, optionally, the filling mouth of the low parameter superheated steam input steam turbine 2 that the low parameter superheater 604 of central cooler waste heat boiler 6 is produced, to allow steam turbine 2 drive generator 1 to generate electricity.
As preferably, the steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water.Condensate water returns to workshop or carries successively by the condensation water heater 601 of central cooler waste heat boiler 6, low parameter evaporimeter 602, low parameter drum 603, low parameter superheater 604 and produce low parameter superheated steam and be delivered to the filling mouth 202 of steam turbine 2 via the low parameter superheat steam pipeline L3 of central cooler waste heat boiler 6 via external feedwater carrier pipe 13.
As preferably, the steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water.Condensate water returns to be transported in oxygen-eliminating device 16 after workshop or condensate water heat via the condensation water heater 601 that external feedwater carrier pipe 13 is conducted through central cooler waste heat boiler 6 carries out deoxygenation, discharges the water of deoxygenation and input in the low parameter drum 603 of central cooler waste heat boiler 6 from oxygen-eliminating device 16.The water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of central cooler waste heat boiler 6, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, and the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604.The low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
As preferably, the water conservancy pump 7 in low parameter drum 603 carries water successively by the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5, sintering smoke exhaust pipe afterheat boiler evaporator 502, sintering smoke exhaust pipe waste heat boiler drum 503 and produce high parameter saturated vapor and be delivered to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701.
As preferably, the water conservancy pump 7 in low parameter drum 603 is conducted through the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701, and the water of discharging from economizer 501 is transported in sintering smoke exhaust pipe waste heat boiler drum 503.The hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum 503 is further by sintering smoke exhaust pipe afterheat boiler evaporator 502, the high parameter steam of discharging from evaporimeter 502 returns in drum 503 again, and the high parameter steam of discharging from drum 503 is transported to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b sintering smoke exhaust pipe waste heat boiler 5.
As preferably, water conservancy pump 7 in low parameter drum 603 is transferred via the second water supply branch road 702 and produces high parameter saturated vapor by the high parameter economizer 605 of central cooler waste heat boiler 6, high parameter evaporimeter 606, high parameter drum 607 successively, and is delivered to superheater 1701 entrance 170101 of external type overheating device 17 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.Through external superheater heating, be delivered to the primary air inlet 201 of steam turbine 2 by superheat steam pipeline L1b.
As preferably, the water conservancy pump 7 in low parameter drum 603 is transferred the high parameter economizer 605 by central cooler waste heat boiler 6 via the second water supply branch road 702.The water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from first of high parameter drum 607 the outlet 60702 is heated by high parameter evaporimeter 606 and is again returned in high parameter drum 607 and produces high parameter saturated vapor, is then delivered to superheater 1701 entrance 170101 of external type overheating device 17 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.Through external superheater heating, export the primary air inlet 201 being delivered to steam turbine 2 by superheat steam pipeline L1b from the outlet 170102 of superheater 1701.
As preferably, steelmaking converter drum 9 is interrupted the steam produced and enters in Converter Steam storage heater 8.Continuous print saturated vapor is exported from the high parameter steam (vapor) outlet of Converter Steam storage heater 8.
Preferably, pass into external type overheating device 17 by the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6 and produce superheated steam, be delivered to the main air intake 201 of steam turbine 2.Pass into external type overheating device 17 by the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6 and produce the main air intake 201 being delivered to steam turbine 2 after superheated steam that the steam superheater 401 in superheated steam and overheated afterburning stove 4 produces merges.
As preferably, central cooler high-temperature flue gas 1501 is delivered to the smoke inlet of external type overheating device 17 respectively via high-temperature smoke discharging pipeline L4 via the smoke evacuation of conveyance conduit L5a and overheated afterburning stove 4.The flue gas of external type overheating device 17 is connected to the smoke inlet end 609 of central cooler waste heat boiler 6 by the pipeline L5b of temperature, low-temperature flue gas 1502 in superheater flue L4a and central cooler and is formed mixed flue gas, this mixed flue gas successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6 inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6.
As preferably, sintering device flue gas 12 delivers in the entrance fan housing 505 of sintering smoke exhaust pipe waste heat boiler 5 via sintering device flue gas conveyance conduit 1201 and also carries out indirect heat exchange with the evaporimeter 502 in sintering smoke exhaust pipe waste heat boiler 5 and economizer 501 (central flow through water or steam) successively, then discharges from the port of export 506 of sintering smoke exhaust pipe waste heat boiler 5.
As preferably, gas piping 10 carries coal gas to enter overheated afterburning stove 4 combustion through vulcanizing burner burner gas entry 404, the high-temperature flue gas produced that burns discharges high-temperature flue gas through the high-temperature smoke discharging mouth 406 vulcanizing burner 4 after carrying out indirect heat exchange with the steam superheater 401 (central flow through water or steam) in overheated afterburning stove 4, and this high-temperature flue gas is delivered to the smoke inlet end of external type overheating device 17 by high-temperature smoke discharging pipeline L4, meanwhile, normal temperature air is transported to the air of air inlet of combustor 405 as gas-fired of overheated afterburning stove 4 by air blast 11.
Usually, the pressure of the superheated steam that external type overheating device 17, overheated afterburning stove 4 produce is >=0.60MPa, and preferably >=1.0MPa, such as pressure is 0.6MPa-2.5MPa, preferred 0.8MPa-2.0MPa, more preferably 1.0MPa-1.8MPa.
Usually, the temperature of superheated steam that external type overheating device 17, overheated afterburning stove 4 produce is >=350 DEG C, preferably >=360 DEG C, such as its temperature is 370 DEG C-460 DEG C, preferably-450 DEG C, more preferably 390 DEG C-450 DEG C.
Usually, the pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 0.3MPa to 0.6MPa, preferred 0.3MPa to 0.5MPa,
Usually, the temperature of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 160 DEG C-300 DEG C, preferably 170 DEG C-280 DEG C.
The 6th kind of embodiment that the utility model provides:
A kind of method of coal gas and Converter Steam and sintering waste heat cogeneration, the method comprises: two strands of saturated steam flowings that sintering smoke exhaust pipe waste heat boiler 5 and Converter Steam storage heater 8 produce, that carry via respective high parameter saturated vapor output channel L2b and L2c are delivered to and carry out overheated in overheated afterburning stove 4 and produce first burst of high parameter flow of superheated steam, then this first burst of high parameter flow of superheated steam are inputted the main air intake of steam turbine 2 through vapours main pipeline L1a, the saturated vapor that the central cooler waste heat boiler 6a with built-in high parameter superheater 610 produces is transported to via its high parameter saturated vapor output channel L2a and carries out overheated in this built-in high parameter superheater 610 and produce second burst of high parameter flow of superheated steam, then this second burst of high parameter flow of superheated steam is maybe delivered to (i.e. the steam inlet 402 of overheated afterburning stove 4) in overheated afterburning stove 4 through vapours branch road L2d by the main air intake that this second burst of high parameter flow of superheated steam inputs steam turbine 2 through vapours secondary duct L1b, with, optionally, the filling mouth of the low parameter superheated steam input steam turbine 2 that the low parameter superheater 604 of central cooler waste heat boiler 6 is produced, to allow steam turbine 2 drive generator 1 to generate electricity.
As preferably, the steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water.Condensate water returns workshop or condensate water and carries successively by the condensation water heater 601 of built-in superheater central cooler waste heat boiler 6a, low parameter evaporimeter 602, low parameter drum 603, low parameter superheater 604 and produce low parameter superheated steam and be delivered to the filling mouth 202 of steam turbine 2 via the low parameter superheat steam pipeline L3 of central cooler waste heat boiler 6a via condensate water carrier pipe 13.
As preferably, the steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water.Condensate water returns to be transported in oxygen-eliminating device 16 after workshop or condensate water heat via the condensation water heater 601 that condensate water carrier pipe 13 is conducted through built-in superheater central cooler waste heat boiler 6a carries out deoxygenation.From oxygen-eliminating device 16, discharge the water of deoxygenation and input in the low parameter drum 603 of built-in superheater central cooler waste heat boiler 6a, the water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of built-in superheater central cooler waste heat boiler 6a, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, and the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604.The low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
As preferably, the water conservancy pump 7 in low parameter drum 603 carries water successively by the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5, sintering smoke exhaust pipe afterheat boiler evaporator 502, sintering smoke exhaust pipe waste heat boiler drum 503 and produce high parameter saturated vapor and be delivered to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701.
As preferably, the water conservancy pump 7 in low parameter drum 603 is conducted through the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701, and the water of discharging from economizer 501 is transported in sintering smoke exhaust pipe waste heat boiler drum 503.The hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum 503 is further by sintering smoke exhaust pipe afterheat boiler evaporator 502, the high parameter steam of discharging from evaporimeter 502 returns in drum 503 again, and the high parameter steam of discharging from drum 503 is transported to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b sintering smoke exhaust pipe waste heat boiler 5.
As preferably, water conservancy pump 7 in low parameter drum 603 is transferred via the second water supply branch road 702 and produces high parameter saturated vapor by the high parameter economizer 605 of built-in superheater central cooler waste heat boiler 6a, high parameter evaporimeter 606, high parameter drum 607 successively, and is delivered to the entrance 61001 of superheater 610 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.Through superheater heating, be delivered to the primary air inlet 201 of steam turbine 2 by superheat steam pipeline L1b or be delivered to the steam inlet 402 (i.e. the steam inlet 402 of steam superheater 401) of overheated afterburning stove 4 through vapours branch road L2d.
As preferably, the water conservancy pump 7 in low parameter drum 603 is transferred the high parameter economizer 605 by built-in superheater central cooler waste heat boiler 6a via the second water supply branch road 702.The water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from first of high parameter drum 607 the outlet 60702 is heated by high parameter evaporimeter 606 and is again returned in high parameter drum 607 and produces high parameter saturated vapor, is then delivered to the entrance 61001 of superheater 610 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.Through superheater heating, be delivered to the primary air inlet 201 of steam turbine 2 from the outlet 61002 of superheater 610 by superheat steam pipeline L1b or be delivered to the steam inlet 402 (i.e. the steam inlet 402 of steam superheater 401) of overheated afterburning stove 4 through vapours branch road L2d.
As preferably, steelmaking converter drum 9 is interrupted the steam produced and enters in Converter Steam storage heater 8.Continuous print saturated vapor is exported from the high parameter steam (vapor) outlet of Converter Steam storage heater 8.
As preferably, pass into superheater 610 by the high parameter saturated vapor output channel L2a of built-in superheater central cooler waste heat boiler 6a and produce superheated steam, be delivered to the main air intake 201 of steam turbine 2.
As preferably, after the superheated steam that the steam superheater 401 in the superheated steam that the high parameter saturated vapor output channel L2a with the central cooler waste heat boiler 6a of built-in superheater 610 is produced by superheater 610 and overheated afterburning stove 4 produces merges, be delivered to the main air intake 201 of steam turbine 2.
As preferably, central cooler high-temperature flue gas 1501 is delivered to the smoke inlet end 609 of built-in superheater central cooler waste heat boiler 6a via the smoke evacuation of conveyance conduit L5a and overheated afterburning stove 4 respectively via high-temperature smoke discharging pipeline L4 and forms mixed flue gas, the superheater 610 of this flue gas in central cooler waste heat boiler 6a.The second smoke inlet 609a warm in central cooler, low-temperature flue gas 1502 is delivered to central cooler waste heat boiler 6a via conveyance conduit L5b, mix with the high-temperature flue gas after have passed through superheater 610, this mixed flue gas successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6a inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6a.
Preferably, gas piping 10 carries coal gas to enter overheated afterburning stove 4 combustion through vulcanizing burner burner gas entry 404, the high-temperature flue gas produced that burns discharges high-temperature flue gas through the high-temperature smoke discharging mouth 406 vulcanizing burner 4 after carrying out indirect heat exchange with the steam superheater 401 in overheated afterburning stove 4, and this high-temperature flue gas is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6a by high-temperature smoke discharging pipeline L4, meanwhile, normal temperature air is transported to the air of air inlet of combustor 405 as gas-fired of overheated afterburning stove 4 by air blast 11.
Usually, the pressure of the superheated steam that built-in superheater central cooler waste heat boiler 6a superheater 610, overheated afterburning stove 4 produce is >=0.60MPa, preferably >=1.0MPa, and such as pressure is 0.6MPa-2.5MPa, preferred 0.8MPa-2.0MPa, more preferably 1.0MPa-1.8MPa.
Usually, there is the superheater 610 in the central cooler waste heat boiler 6a of built-in superheater 610, the temperature of superheated steam that overheated afterburning stove 4 produces is >=350 DEG C, preferably >=360 DEG C, such as its temperature is 370 DEG C-460 DEG C, preferably-450 DEG C, more preferably 390 DEG C-450 DEG C.
Usually, the pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 0.3MPa to 0.6MPa, preferred 0.3MPa to 0.5MPa,
Usually, the temperature of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 160 DEG C-300 DEG C, preferably 170 DEG C-280 DEG C.
Embodiment 1
Device as shown in fig. 1.A kind of coal gas and Converter Steam and sintering waste heat combined power generation device, this device comprises generator 1, steam turbine 2, condenser 3, overheated afterburning stove 4, the Converter Steam storage heater 8 that sinters smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6, steelmaking converter drum 9 and be connected with steelmaking converter drum 9.Wherein: the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 202 of steam turbine.High parameter saturated vapor output channel L2a, the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe waste heat boiler 5 of central cooler waste heat boiler 6 and the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 are connected to the steam inlet 402 of overheated afterburning stove 4.The steam (vapor) outlet 403 of overheated afterburning stove 4 is connected to the main air intake 201 of steam turbine 2.The rotating shaft 204 of steam turbine 2 connects or drives the rotating shaft of generator 1.The steam drain 203 of steam turbine is connected to condenser 3.Economizer 501, evaporimeter 502 be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum 503 is provided with in sintering smoke exhaust pipe waste heat boiler 5.This device is provided with water pump 7.The outlet of water pump 7 is connected to the water inlet 504 of the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 by the first water supply branch road 701.The outlet 50101 of economizer 501 is connected to the first entrance 50301 of the drum 503 of sintering smoke exhaust pipe waste heat boiler 5.First outlet 50302 of drum 503 is connected with the entrance 50201 of evaporimeter 502.The outlet 50202 of evaporimeter 502 is connected with the second entrance 50303 of drum 503.Second outlet of drum 503 and high parameter steam (vapor) outlet 50304 are connected with the steam inlet 402 of overheated afterburning stove 4 by saturated vapor pipeline L2b.The outlet bellows 506 of sintering smoke exhaust pipe waste heat boiler 5 are connected with air-introduced machine 14.The entrance fan housing 505 of this sintering smoke exhaust pipe waste heat boiler 5 connects sintering device flue gas conveyance conduit 1201.Sintering smoke exhaust pipe waste heat boiler 5 is for singly to press wet steamer.
Device also has oxygen-eliminating device 16 to be connected with central cooler waste heat boiler low parameter drum 603.External feedwater carrier pipe 13 or be connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6 from the condensate water carrier pipe 13 that the delivery port of condenser 3 is drawn.The outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 16.The delivery port of oxygen-eliminating device 16 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6.First outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602.The outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603.Second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, and the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.Be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605 and high parameter evaporimeter 606 in central cooler waste heat boiler 6 and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.
The smoke inlet end 609 that device also has the conveyance conduit L5 of central cooler flue gas 15 and high-temperature smoke discharging pipeline L4 to be connected to central cooler waste heat boiler 6 is respectively connected to the smoke inlet end 609 of central cooler waste heat boiler 6.The outlet of water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of central cooler waste heat boiler 6.The outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, and the second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the steam inlet 402 of overheated afterburning stove 4 by saturated vapor pipeline L2a.The outlet bellows 608 of central cooler waste heat boiler 6 are connected with air-introduced machine 14.The low parameter drum 603 of central cooler waste heat boiler 6 has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7.The delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.Sintering circular-cooler waste heat boiler 6 is dual voltage type waste heat boiler.
The outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 801 of Converter Steam storage heater 8.The high parameter steam (vapor) outlet 802 of Converter Steam storage heater 8 is connected with the steam inlet 402 of overheated afterburning stove by the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8.The high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with Converter Steam storage heater control valve group 803.The high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with the check-valves 804 of Converter Steam storage heater 8.Steelmaking converter drum control valve group 903 is made up of 2 groups of control valves.Converter Steam storage heater control valve group 803 is made up of 2 groups of control valves.Drainpipe 805 is also provided with bottom Converter Steam storage heater 8.Draining valve 806 is also provided with bottom Converter Steam storage heater 8.
Be provided with steam superheater 401, burner 407 and air blast 11 in overheated afterburning stove 4, be connected to overheated afterburning burner 407 gas entry 404 by gas piping 10.Air blast 11 connects the air inlet of combustor 405 of overheated afterburning stove 4.The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet end 609 of central cooler waste heat boiler 6 by high-temperature smoke discharging pipeline L4.The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet of external type overheating device 17 by high-temperature smoke discharging pipeline L4.High-temperature smoke discharging pipeline L4 is provided with smoke exhaust pipe control valve 19.High-temperature smoke discharging pipeline L4 is provided with atmospheric valve 18.
Steam turbine 2 is condensing steam compensating turbine.The rotating shaft 204 of steam turbine connects or drives the rotating shaft of generator 1.The steam drain 203 of steam turbine is connected with condenser 3.The condensate water efferent duct 301 of condenser 3 is connected to the condensate water carrier pipe 13 of central cooler waste heat boiler 6.
The method of operating of the present embodiment is:
Sintering smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6 and Converter Steam storage heater 8 produce, via respective high parameter saturated vapor output channel L2b, three strands of saturated vapors that L2a and L2c carries flow through overheated afterburning stove 4 to carry out overheated and produces high parameter superheated steam, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1, with, optionally, the filling mouth of the low parameter superheated steam input steam turbine 2 that the low parameter superheater 604 of central cooler waste heat boiler 6 is produced, to allow steam turbine 2 drive generator 1 to generate electricity.
The steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water.Condensate water is delivered in the condensation water heater 601 of central cooler waste heat boiler 6 to be transported in oxygen-eliminating device 16 after heating via external feedwater conveyance conduit 13 carries out deoxygenation, discharges the water of deoxygenation and input in the low parameter drum 603 of central cooler waste heat boiler 6 from oxygen-eliminating device 16.The water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of central cooler waste heat boiler 6, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, and the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604.The low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
Water conservancy pump 7 in low parameter drum 603 is conducted through the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701, and the water of discharging from economizer 501 is transported in sintering smoke exhaust pipe waste heat boiler drum 503.The hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum 503 is further by sintering smoke exhaust pipe afterheat boiler evaporator 502, the high parameter steam of discharging from evaporimeter 502 returns in drum 503 again, and the high parameter steam of discharging from drum 503 is transported to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b sintering smoke exhaust pipe waste heat boiler 5.
Water conservancy pump 7 in low parameter drum 603 is transferred the high parameter economizer 605 by central cooler waste heat boiler 6 via the second water supply branch road 702, and the water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607.The hot water of discharging from first of high parameter drum 607 the outlet 60702 is heated by high parameter evaporimeter 606 and is again returned in high parameter drum 607 and produces high parameter saturated vapor, is then delivered to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.
Steelmaking converter drum 9 is interrupted the steam produced and enters in Converter Steam storage heater 8.Continuous print saturated vapor is exported from the high parameter steam (vapor) outlet of Converter Steam storage heater 8.
Respectively via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6, the high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe waste heat boiler 5, three strands of saturated steam flowings that the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 carries are undertaken overheated by the steam superheater 401 in overheated afterburning stove 4 after merging and produce superheated steam or described three strands of saturated steam flowings and enter respectively and carry out overheated in the steam superheater 401 of overheated afterburning stove 4 and produce superheated steam, then produced superheated steam is delivered to the main air intake 201 of steam turbine 2.
Central cooler flue gas 15 is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6 via the smoke evacuation of conveyance conduit 1501 and overheated afterburning stove 4 respectively via high-temperature smoke discharging pipeline L4 and forms mixed flue gas, this mixed flue gas successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6 inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6.
Sintering device flue gas 12 delivers in the entrance fan housing 505 of sintering smoke exhaust pipe waste heat boiler 5 via sintering device flue gas conveyance conduit 1201 and also carries out indirect heat exchange with the evaporimeter 502 in sintering smoke exhaust pipe waste heat boiler 5 and economizer 501 (central flow through water or steam) successively, then discharges from the port of export 506 of sintering smoke exhaust pipe waste heat boiler 5.
Gas piping 10 carries coal gas to enter overheated afterburning stove 4 combustion through vulcanizing burner burner gas entry 404.The high-temperature flue gas produced that burns discharges high-temperature flue gas through the high-temperature smoke discharging mouth 406 vulcanizing burner 4 after carrying out indirect heat exchange with the steam superheater 401 (central flow through water or steam) in overheated afterburning stove 4, and this high-temperature flue gas is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6 by high-temperature smoke discharging pipeline L4.Meanwhile, normal temperature air is transported to the air of air inlet of combustor 405 as gas-fired of overheated afterburning stove 4 by air blast 11.
The pressure of the superheated steam that overheated afterburning stove 4 produces is 2.0MPa, and its temperature is 400 DEG C.
The pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 0.7MPa, and its temperature is 220 DEG C.
Embodiment 2
As shown in Figure 2.A kind of coal gas and Converter Steam and sintering waste heat combined power generation device, this device comprises generator 1, steam turbine 2, condenser 3, overheated afterburning stove 4, the Converter Steam storage heater 8 that sinters smoke exhaust pipe waste heat boiler 5, have the central cooler waste heat boiler 6 of external type overheating device 17, steelmaking converter drum 9 and be connected with steelmaking converter drum 9.Wherein: the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 202 of steam turbine.The high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6 is connected to the entrance 170101 of the superheater 1701 of external type overheating device 17, is connected to the main air intake 201 of steam turbine 2 or is connected to the saturated vapor entrance 402 of overheated afterburning stove by superheated steam branch road L2d by central cooler waste heat boiler superheat steam pipeline L1b.The high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe the waste heat boiler 5 and high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is connected to the steam inlet 402 of overheated afterburning stove 4.The steam (vapor) outlet 403 of overheated afterburning stove 4 is connected to the main air intake 201 of steam turbine 2.The rotating shaft 204 of steam turbine 2 connects or drives the rotating shaft of generator 1.The steam drain 203 of steam turbine is connected to condenser 3.As preferably, in sintering smoke exhaust pipe waste heat boiler 5, be provided with economizer 501, evaporimeter 502 be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum 503.The outlet bellows 506 of sintering smoke exhaust pipe waste heat boiler 5 are connected with air-introduced machine 14., the entrance fan housing 505 of this sintering smoke exhaust pipe waste heat boiler 5 connects sintering device flue gas conveyance conduit 1201.Be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605 and high parameter evaporimeter 606 in central cooler waste heat boiler 6 and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.The outlet bellows 608 of central cooler waste heat boiler 6 are connected with air-introduced machine 14.Device also has central cooler high-temperature flue gas 1501 pipeline L5a to be connected with the smoke inlet of external type overheating device 17 with overheated afterburning stove high-temperature smoke discharging pipeline L4.The exhanst gas outlet of external type overheating device 17 is connected with the smoke inlet 609 of central cooler 6 by superheater flue L4a.The low parameter drum 603 of central cooler waste heat boiler 6 has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7.The delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.Sintering circular-cooler waste heat boiler 6 is dual voltage type waste heat boiler.
This device is provided with water pump 7.The outlet of water pump 7 is connected to the water inlet 504 of the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 by the first water supply branch road 701.The outlet 50101 of economizer 501 is connected to the first entrance 50301 of the drum 503 of sintering smoke exhaust pipe waste heat boiler 5.First outlet 50302 of drum 503 is connected with the entrance 50201 of evaporimeter 502.The outlet 50202 of evaporimeter 502 is connected with the second entrance 50303 of drum 503.Second outlet of drum 503 and high parameter steam (vapor) outlet 50304 are connected with the steam inlet 402 of overheated afterburning stove 4 by saturated vapor pipeline L2b.The outlet of water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of central cooler waste heat boiler 6.The outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, and the second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the steam inlet 170101 of external superheater 1701 by saturated vapor pipeline L2a.The steam (vapor) outlet 170102 of external superheater 1701 is connected by superheat steam pipeline L1b and refers to the primary air inlet 201 of steam turbine 2 or be connected to the saturated vapor entrance 402 of overheated afterburning stove by superheated steam branch road L2d.
Device also has oxygen-eliminating device 16 to be connected with central cooler waste heat boiler low parameter drum 603.The condensate water carrier pipe 13 of drawing from the delivery port of condenser 3 is connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6.The outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 16.The delivery port of oxygen-eliminating device 16 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6.First outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602.The outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603.Second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, and the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
The outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 801 of Converter Steam storage heater 8.The high parameter steam (vapor) outlet 802 of Converter Steam storage heater 8 is connected with the steam inlet 402 of overheated afterburning stove by the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8.The high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with Converter Steam storage heater control valve group 803.The high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with the check-valves 804 of Converter Steam storage heater 8.Steelmaking converter drum control valve group 903 is made up of 2 groups of control valves.Converter Steam storage heater control valve group 803 is made up of 2 groups of control valves.Drainpipe 805 is also provided with bottom Converter Steam storage heater 8.Draining valve 806 is also provided with bottom Converter Steam storage heater 8.
Be provided with steam superheater 401, burner 407 and air blast 11 in overheated afterburning stove 4, be connected to overheated afterburning burner 407 gas entry 404 by gas piping 10.Air blast 11 connects the air inlet of combustor 405 of overheated afterburning stove 4.The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet end 609 of central cooler waste heat boiler 6 by high-temperature smoke discharging pipeline L4.The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet of external type overheating device 17 by high-temperature smoke discharging pipeline L4.Sintering smoke exhaust pipe waste heat boiler 5 is for singly to press wet steamer.High-temperature smoke discharging pipeline L4 is provided with smoke exhaust pipe control valve 19.High-temperature smoke discharging pipeline L4 is provided with atmospheric valve 18.
Steam turbine 2 is condensing steam compensating turbine.The rotating shaft 204 of steam turbine connects or drives the rotating shaft of generator 1.The steam drain 203 of steam turbine is connected with condenser 3.The condensate water efferent duct 301 of condenser 3 is connected to the condensate water carrier pipe 13 of central cooler waste heat boiler 6.
The method of operating of the present embodiment is:
A kind of method of coal gas and Converter Steam and sintering waste heat cogeneration, the method comprises: two strands of saturated steam flowings that sintering smoke exhaust pipe waste heat boiler 5 and Converter Steam storage heater 8 produce, that carry via respective high parameter saturated vapor output channel L2b and L2c are delivered to and carry out overheated in overheated afterburning stove 4 and produce first burst of high parameter flow of superheated steam, then this first burst of high parameter flow of superheated steam are inputted the main air intake of steam turbine 2 through vapours main pipeline L1a, the saturated vapor that central cooler waste heat boiler 6 produces is transported in external type overheating device 17 via its high parameter saturated vapor output channel L2a and carries out overheated and produce second burst of high parameter flow of superheated steam, this second burst of high parameter flow of superheated steam to be maybe delivered in overheated afterburning stove 4 by this second burst of high parameter flow of superheated steam the steam inlet 402 of i.e. overheated afterburning stove 4 through vapours branch road L2d through the main air intake that vapours secondary duct L1b inputs steam turbine 2, with, optionally, the low parameter superheated steam produced by the low parameter superheater 604 of central cooler waste heat boiler 6 inputs the filling mouth of steam turbine 2 via low parameter superheat steam pipeline L3, to allow steam turbine 2 drive generator 1 to generate electricity.
The steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water 13.Condensate water 13 is transported in oxygen-eliminating device 16 after being heated by the condensation water heater 601 of central cooler waste heat boiler 6 carries out deoxygenation, discharges the water of deoxygenation and input in the low parameter drum 603 of central cooler waste heat boiler 6 from oxygen-eliminating device 16.The water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of central cooler waste heat boiler 6, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, and the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604.The low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
Water conservancy pump 7 in low parameter drum 603 is conducted through the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701, and the water of discharging from economizer 501 is transported in sintering smoke exhaust pipe waste heat boiler drum 503.The hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum 503 is further by sintering smoke exhaust pipe afterheat boiler evaporator 502, the high parameter steam of discharging from evaporimeter 502 returns in drum 503 again, and the high parameter steam of discharging from drum 503 is transported to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b sintering smoke exhaust pipe waste heat boiler 5.
Water conservancy pump 7 in low parameter drum 603 is transferred the high parameter economizer 605 by central cooler waste heat boiler 6 via the second water supply branch road 702.The water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from first of high parameter drum 607 the outlet 60702 is heated by high parameter evaporimeter 606 and is again returned in high parameter drum 607 and produces high parameter saturated vapor, is then delivered to superheater 1701 entrance 170101 of external type overheating device 17 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.Through external superheater heating, export from the outlet 170102 of superheater 1701 and be delivered to the primary air inlet 201 of steam turbine 2 by superheat steam pipeline L1b or be delivered to the saturated vapor entrance 402 (when central cooler flue-gas temperature is on the low side) of overheated afterburning stove by superheated steam branch road L2d.
Steelmaking converter drum 9 is interrupted the steam produced and enters in Converter Steam storage heater 8.Continuous print saturated vapor is exported from the high parameter steam (vapor) outlet of Converter Steam storage heater 8.
Pass into external type overheating device 17 by the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6 and produce the main air intake 201 being delivered to steam turbine 2 after superheated steam that the steam superheater 401 in superheated steam and overheated afterburning stove 4 produces merges.
Central cooler high-temperature flue gas 1501 is delivered to the smoke inlet of external type overheating device 17 respectively via high-temperature smoke discharging pipeline L4 via the smoke evacuation of conveyance conduit L5a and overheated afterburning stove 4.The flue gas of external type overheating device 17 is connected to the smoke inlet end 609 of central cooler waste heat boiler 6 by the pipeline L5b of temperature, low-temperature flue gas 1502 in superheater flue L4a and central cooler and is formed mixed flue gas, this mixed flue gas successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6 inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6.
Sintering device flue gas 12 delivers in the entrance fan housing 505 of sintering smoke exhaust pipe waste heat boiler 5 via sintering device flue gas conveyance conduit 1201 and also carries out indirect heat exchange with the evaporimeter 502 in sintering smoke exhaust pipe waste heat boiler 5 and economizer 501 (central flow through water or steam) successively, then discharges from the port of export 506 of sintering smoke exhaust pipe waste heat boiler 5.
As preferably, gas piping 10 carries coal gas to enter overheated afterburning stove 4 combustion through vulcanizing burner burner gas entry 404, the high-temperature flue gas produced that burns discharges high-temperature flue gas through the high-temperature smoke discharging mouth 406 vulcanizing burner 4 after carrying out indirect heat exchange with the steam superheater 401 (central flow through water or steam) in overheated afterburning stove 4, and this high-temperature flue gas is delivered to the smoke inlet end of external type overheating device 17 by high-temperature smoke discharging pipeline L4, meanwhile, normal temperature air is transported to the air of air inlet of combustor 405 as gas-fired of overheated afterburning stove 4 by air blast 11.
The pressure of the superheated steam that external type overheating device 17, overheated afterburning stove 4 produce is 2.2MPa, and its temperature is 430 DEG C.
The pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 1.0MPa, and its temperature is 260 DEG C.
Embodiment 3
As shown in Figure 3.A kind of coal gas and Converter Steam and sintering waste heat combined power generation device, this device comprises generator 1, steam turbine 2, condenser 3, overheated afterburning stove 4, the Converter Steam storage heater 8 that sinters smoke exhaust pipe waste heat boiler 5, have the central cooler waste heat boiler 6 of built-in superheater 610, steelmaking converter drum 9 and be connected with steelmaking converter drum 9.Wherein: the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 202 of steam turbine.The high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6 is connected to the entrance 61001 of the built-in superheater 610 of central cooler waste heat boiler, and the outlet 61002 of central cooler waste-heat boiler superheater 610 is connected to the main air intake 201 of steam turbine 2 by central cooler waste heat boiler superheat steam pipeline L1b or is connected to the saturated vapor entrance 402 of overheated afterburning stove by superheated steam branch road L2d.The high parameter saturated vapor output channel L2b of sintering smoke exhaust pipe the waste heat boiler 5 and high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is connected to the steam inlet 402 of overheated afterburning stove 4.The steam (vapor) outlet 403 of overheated afterburning stove 4 is connected to the main air intake 201 of steam turbine 2.The rotating shaft 204 of steam turbine 2 connects or drives the rotating shaft of generator 1.The steam drain 203 of steam turbine is connected to condenser 3.Economizer 501, evaporimeter 502 be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum 503 is provided with in sintering smoke exhaust pipe waste heat boiler 5.The outlet bellows 506 of sintering smoke exhaust pipe waste heat boiler 5 are connected with air-introduced machine 14.The entrance fan housing 505 of this sintering smoke exhaust pipe waste heat boiler 5 connects sintering device flue gas conveyance conduit 1201.Sintering smoke exhaust pipe waste heat boiler 5 is for singly to press wet steamer.
This device is provided with water pump 7.The outlet of water pump 7 is connected to the water inlet 504 of the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 by the first water supply branch road 701.The outlet 50101 of economizer 501 is connected to the first entrance 50301 of the drum 503 of sintering smoke exhaust pipe waste heat boiler 5.First outlet 50302 of drum 503 is connected with the entrance 50201 of evaporimeter 502.The outlet 50202 of evaporimeter 502 is connected with the second entrance 50303 of drum 503.Second outlet of drum 503 and high parameter steam (vapor) outlet 50304 are connected with the steam inlet 402 of overheated afterburning stove 4 by saturated vapor pipeline L2b.
Device also has oxygen-eliminating device 16 to be connected with central cooler waste heat boiler low parameter drum 603.The condensate water carrier pipe 13 of drawing from the delivery port of condenser 3 is connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6.The outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 16.The delivery port of oxygen-eliminating device 16 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6.First outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602.The outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603.Second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, and the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
Sintering circular-cooler waste heat boiler 6a is dual voltage type waste heat boiler.Be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605, high parameter evaporimeter 606, superheater 610 in built-in superheater central cooler waste heat boiler 6a, and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.Device also has the conveyance conduit L5a of central cooler high-temperature flue gas 1501 and high-temperature smoke discharging pipeline L4 to be connected to the smoke inlet end 609 of built-in superheater central cooler waste heat boiler 6a respectively.In central cooler waste heat boiler, the conveyance conduit L5b of gentle low-temperature flue gas 1502 is connected to the second smoke inlet 609a of central cooler waste heat boiler 6a.Device also has oxygen-eliminating device 16 to be connected with central cooler waste heat boiler low parameter drum 603.The condensate water carrier pipe 13 of drawing from the delivery port of condenser 3 is connected to the entrance 60101 of the condensation water heater 601 of built-in superheater central cooler waste heat boiler 6a, and the outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 16.The delivery port of oxygen-eliminating device 16 is connected with the first entrance 60301 of the low parameter drum 603 of built-in superheater central cooler waste heat boiler 6a, first outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602, the outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603, second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.The outlet bellows 608 of built-in superheater central cooler waste heat boiler 6a are connected with air-introduced machine 14.The low parameter drum 603 of built-in superheater central cooler waste heat boiler 6a has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7.The delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.
The outlet of water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of built-in superheater central cooler waste heat boiler 6a.The outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607.First outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, and the second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the steam inlet 61001 of superheater 610 by saturated vapor pipeline L2a.The steam (vapor) outlet 61002 of superheater 610 is connected the primary air inlet 201 of steam turbine 2 by superheat steam pipeline L1b or is connected to the saturated vapor entrance 402 of overheated afterburning stove by superheated steam branch road L2d.
The outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 801 of Converter Steam storage heater 8.The high parameter steam (vapor) outlet 802 of Converter Steam storage heater 8 is connected with the steam inlet 402 of overheated afterburning stove by the high parameter saturated vapor output channel L2c of Converter Steam storage heater 8.
Be provided with steam superheater 401, burner 407 and air blast 11 in overheated afterburning stove 4, be connected to overheated afterburning burner 407 gas entry 404 by gas piping 10.Air blast 11 connects the air inlet of combustor 405 of overheated afterburning stove 4.The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet end 609 of central cooler waste heat boiler 6 by high-temperature smoke discharging pipeline L4.The high-temperature smoke discharging mouth 406 of overheated afterburning stove 4 is connected to the smoke inlet of external type overheating device 17 by high-temperature smoke discharging pipeline L4.High-temperature smoke discharging pipeline L4 is provided with smoke exhaust pipe control valve 19.High-temperature smoke discharging pipeline L4 is provided with atmospheric valve 18.The high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with Converter Steam storage heater control valve group 803.The high parameter saturated vapor output channel L2c of Converter Steam storage heater 8 is provided with the check-valves 804 of Converter Steam storage heater 8.Steelmaking converter drum control valve group 903 is made up of 2 groups of control valves.Drainpipe 805 is also provided with bottom Converter Steam storage heater 8.Draining valve 806 is also provided with bottom Converter Steam storage heater 8.
Steam turbine 2 is condensing steam compensating turbine.The rotating shaft 204 of steam turbine connects or drives the rotating shaft of generator 1.The steam drain 203 of steam turbine is connected with condenser 3.The condensate water efferent duct 301 of condenser 3 is connected to the condensate water carrier pipe 13 of central cooler waste heat boiler 6.
The method of operating of the present embodiment is:
Two strands of saturated steam flowings that sintering smoke exhaust pipe waste heat boiler 5 and Converter Steam storage heater 8 produce, that carry via respective high parameter saturated vapor output channel L2b and L2c are delivered to and carry out overheated in overheated afterburning stove 4 and produce first burst of high parameter flow of superheated steam, then this first burst of high parameter flow of superheated steam are inputted the main air intake of steam turbine 2 through vapours main pipeline L1a, the saturated vapor that the central cooler waste heat boiler 6a with built-in high parameter superheater 610 produces is transported to via its high parameter saturated vapor output channel L2a and carries out overheated in this built-in high parameter superheater 610 and produce second burst of high parameter flow of superheated steam, then this second burst of high parameter flow of superheated steam is maybe delivered in overheated afterburning stove 4 through vapours branch road L2d by the main air intake that this second burst of high parameter flow of superheated steam inputs steam turbine 2 through vapours secondary duct L1b, with, optionally, the low parameter superheated steam produced by the low parameter superheater 604 of central cooler waste heat boiler 6 inputs the filling mouth of steam turbine 2 via low parameter superheat steam pipeline L3, to allow steam turbine 2 drive generator 1 to generate electricity.
The steam discharge of steam turbine 2 enters in condenser 3 and forms condensate water 13.Condensate water 13 is transported in oxygen-eliminating device 16 after being heated by the condensation water heater 601 of built-in superheater central cooler waste heat boiler 6a carries out deoxygenation.From oxygen-eliminating device 16, discharge the water of deoxygenation and input in the low parameter drum 603 of central cooler waste heat boiler 6, the water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of central cooler waste heat boiler 6, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, and the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604.The low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 202 of steam turbine 2 by low parameter superheat steam pipeline L3.
Water conservancy pump 7 in low parameter drum 603 is conducted through the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701, and the water of discharging from economizer 501 is transported in sintering smoke exhaust pipe waste heat boiler drum 503.The hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum 503 is further by sintering smoke exhaust pipe afterheat boiler evaporator 502, the high parameter steam of discharging from evaporimeter 502 returns in drum 503 again, and the high parameter steam of discharging from drum 503 is transported to the steam inlet 402 of overheated afterburning stove 4 via the high parameter saturated vapor output channel L2b sintering smoke exhaust pipe waste heat boiler 5.
Water conservancy pump 7 in low parameter drum 603 is transferred the high parameter economizer 605 by built-in superheater central cooler waste heat boiler 6a via the second water supply branch road 702.The water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from first of high parameter drum 607 the outlet 60702 is heated by high parameter evaporimeter 606 and is again returned in high parameter drum 607 and produces high parameter saturated vapor, is then delivered to the entrance 61001 of superheater 610 via the high parameter saturated vapor output channel L2a of central cooler waste heat boiler 6.Through superheater heating, be delivered to the primary air inlet 201 of steam turbine 2 from the outlet 61002 of superheater 610 by superheat steam pipeline L1b or be delivered to the saturated vapor entrance 402 (when the temperature of central cooler flue gas is on the low side) of overheated afterburning stove by superheated steam branch road L2d.
Steelmaking converter drum 9 is interrupted the steam produced and enters in Converter Steam storage heater 8.Continuous print saturated vapor is exported from the high parameter steam (vapor) outlet of Converter Steam storage heater 8.
Pass into superheater 610 by the high parameter saturated vapor output channel L2a of built-in superheater central cooler waste heat boiler 6a and produce the main air intake 201 being delivered to steam turbine 2 after superheated steam that the steam superheater 401 in superheated steam and overheated afterburning stove 4 produces merges.
Central cooler high-temperature flue gas 1501 is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6 via the smoke evacuation of conveyance conduit L5a and overheated afterburning stove 4 respectively via high-temperature smoke discharging pipeline L4 and forms mixed flue gas, the superheater 610 of this flue gas in central cooler waste heat boiler 6a.The second smoke inlet 609a warm in central cooler, low-temperature flue gas 1502 is delivered to central cooler waste heat boiler 6a via conveyance conduit L5b, have passed through the mixing of the high-temperature flue gas after superheater, with this mixed flue gas successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6a inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6a.
Gas piping 10 carries coal gas to enter overheated afterburning stove 4 combustion through vulcanizing burner burner gas entry 404, the high-temperature flue gas produced that burns discharges high-temperature flue gas through the high-temperature smoke discharging mouth 406 vulcanizing burner 4 after carrying out indirect heat exchange with the steam superheater 401 in overheated afterburning stove 4, and this high-temperature flue gas is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6a by high-temperature smoke discharging pipeline L4, meanwhile, normal temperature air is transported to the air of air inlet of combustor 405 as gas-fired of overheated afterburning stove 4 by air blast 11.
The pressure of the superheated steam that built-in superheater central cooler waste heat boiler 6a, overheated afterburning stove 4 produce is 2.4MPa, and its temperature is 460 DEG C.
The pressure of the low parameter superheated steam that built-in superheater central cooler waste heat boiler 6a low parameter superheater 604 produces is 1.5MPa, and its temperature is 320 DEG C.
Test effect:
One) apparatus and method described in embodiment 1 are adopted.Below with a 300m 2sinter cooler and 2 120t steelmaking converters be example so that the beneficial effect that this patent is implemented to be described:
The cold waste heat boiler of ring is two pressure waste heat boilers, produces 1.4MPa, 350 DEG C of steam 28t/h; 0.3MPa, 180 DEG C of steam 9t/h.The converter of 2 120t on average produces the saturated vapor 20t/h of 1.4MPa.Separately there is blast furnace gas 10000Nm 3/ h.Utilizing the mode of generating according to existing waste heat dispersion, can generated energy be sintering generated energy 6390kW, saturated vapor generated energy 2550kW, Power Generation by BF Gas amount 2425kW.Total power is 11365kW; Dispersion Land use systems need build 3 generating main buildings, about operation maintenance personnel 60 people.
According to the method for embodiment 1, by the flue gas waste heat recovery of sintering machine smoke exhaust pipe, produce the saturated vapor of 1.4MPa, 7t/h; Produce high-temperature flue gas after blast furnace gas combustion, 27t/h, 1.4MPa saturated vapor is heated to 420 DEG C, high-temperature smoke discharging is the cold waste heat boiler of access ring again, fecund raw 6t/h, 1.4MPa, the superheated steam of 350 DEG C.Amount to and produce 1.4MPa, the steam 27t/h of 420 DEG C, 1.4MPa, the steam 34t/h of 350 DEG C, 0.3MPa, 180 DEG C of steam 9t/h.Total generated output is 13325kW; This programme only builds 1 generating main building, about operation maintenance personnel 24 people.
As can be seen from upper analysis contrast, after adopting this programme, generating capacity improves about 17%, and factory building takes up an area and investment saving more than 30%.Operation maintenance personnel reduce 60% especially.
Especially, when sintering device flue gas temperature is abnormal with central cooler wind temperature: such as when the high parameter cigarette temperature of central cooler is reduced to 310 DEG C, when low parameter cigarette temperature is 260 DEG C, only produce 1.3MPa, 280 DEG C of steam 15.3t/h; 0.3MPa, 180 DEG C of steam 11.5t/h, can generate electricity 3750kW.
As adopted this programme, when central cooler high parameter cigarette temperature is reduced to 310 DEG C, when low parameter cigarette temperature is 260 DEG C, produce 1.3MPa saturated vapor 17.5t/h, 0.3MPa, 180 DEG C of steam 10.4t/h; Sintering machine smoke evacuation can produce 1.3MPa saturated vapor 7.6t/h; Need blast furnace gas 8900Nm 3/ h, the smoke discharging residual heat of overheated afterburning stove can produce the saturated vapor of 1.3MPa, 6.9t/h.Total obtains 1.3MPa, 420 DEG C of steam 31t/h, 0.3MPa, 180 DEG C of steam 10t/h, and can generate electricity 7230kW, the generated energy 2250kW of deduction blast furnace gas contribution, sintering and central cooler afterheat steam generated energy 4980kW.
As can be seen from upper comparative analysis, when sintering abnormal with wind temperature, this programme generating capacity promotes: (4980-3750)/3750=0.328, namely improves 32.8%.
Two) similarly, adopt apparatus and method disclosed in embodiment 2, that is, central cooler flue gas is taken from high-temperature region and middle warm area respectively, realize the exhaust heat stepped utilization of central cooler flue gas, central cooler flue gas heat utilization rate promotes 13% further.
This programme generating capacity has larger lifting than existing scheme, and steam parameter is stablized, and can ensure the safe and stable operation of steam turbine.

Claims (56)

1. a coal gas and Converter Steam and sintering waste heat combined power generation device, it is characterized in that: this device comprises generator (1), steam turbine (2), condenser (3), overheated afterburning stove (4), sintering smoke exhaust pipe waste heat boiler (5), central cooler waste heat boiler (6), steelmaking converter drum (9), the Converter Steam storage heater (8) that is connected with steelmaking converter drum (9), wherein: be provided with steam superheater, burner and outside in overheated afterburning stove and be provided with air blast; The height of central cooler waste heat boiler (6) or length are generally 1.5-40 rice; The high parameter saturated vapor output channel (L2b) of sintering smoke exhaust pipe waste heat boiler (5) and the high parameter saturated vapor output channel (L2c) of Converter Steam storage heater (8) are connected to the steam inlet (402) of overheated afterburning stove (4) respectively, and the steam (vapor) outlet (403) of overheated afterburning stove (4) is connected to the main air intake (201) of steam turbine (2) through vapours main pipeline (L1); Central cooler waste heat boiler (6) has high parameter drum (607), and the high parameter saturated vapor output channel (L2a) of drawing from the high parameter drum (607) of central cooler waste heat boiler (6) is also connected to the steam inlet (402) of overheated afterburning stove (4); The rotating shaft of steam turbine (2) connects or drives the rotating shaft of generator (1), and the steam drain (203) of steam turbine is connected to condenser (3).
2. device according to claim 1, is characterized in that: the low parameter superheated steam that device also comprises central cooler waste heat boiler (6) exports the filling mouth (202) that (60402) are connected to steam turbine (2).
3. a coal gas and Converter Steam and sintering waste heat combined power generation device, it is characterized in that: the Converter Steam storage heater (8) that this device comprises generator (1), steam turbine (2), condenser (3), overheated afterburning stove (4), sintering smoke exhaust pipe waste heat boiler (5), the central cooler waste heat boiler (6) with external type overheating device (17), steelmaking converter drum (9) and is connected with steelmaking converter drum (9), wherein: be provided with steam superheater, burner and outside in overheated afterburning stove and be provided with air blast, the height of central cooler waste heat boiler (6) or length are generally 1.5-40 rice, the high parameter saturated vapor output channel (L2b) of sintering smoke exhaust pipe waste heat boiler (5) and the high parameter saturated vapor output channel (L2c) of Converter Steam storage heater (8) are connected to the steam inlet (402) of overheated afterburning stove (4) respectively, and the steam (vapor) outlet (403) of overheated afterburning stove (4) is connected to the main air intake (201) of steam turbine (2) through vapours main pipeline (L1a), central cooler waste heat boiler (6) has high parameter drum (607) and central cooler waste heat boiler (6) has external type overheating device (17) in addition, the high parameter saturated vapor output channel (L2a) of drawing from the high parameter drum (607) of central cooler waste heat boiler (6) is connected to the steam inlet (170101) of the high parameter superheater (1701) of external type overheating device (17), and the steam (vapor) outlet (170102) of this high parameter superheater (1701) is connected to the main air intake (201) of steam turbine (2) respectively by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b) and/or is connected to the steam inlet (402) of overheated afterburning stove (4) by superheated steam branch road (L2d), the rotating shaft of steam turbine (2) connects or drives the rotating shaft of generator (1), and the steam drain (203) of steam turbine (2) is connected to condenser (3).
4. device according to claim 3, is characterized in that: the low parameter superheated steam that device also comprises central cooler waste heat boiler (6) exports the filling mouth (202) that (60402) are connected to steam turbine (2).
5. a coal gas and Converter Steam and sintering waste heat combined power generation device, it is characterized in that: the Converter Steam storage heater (8) that this device comprises generator (1), steam turbine (2), condenser (3), overheated afterburning stove (4), sintering smoke exhaust pipe waste heat boiler (5), the central cooler waste heat boiler (6a) with built-in high parameter superheater (610), steelmaking converter drum (9) and is connected with steelmaking converter drum (9), wherein: be provided with steam superheater, burner and outside in overheated afterburning stove and be provided with air blast, the height of central cooler waste heat boiler (6) or length are generally 1.5-40 rice, the high parameter saturated vapor output channel (L2b) of sintering smoke exhaust pipe waste heat boiler (5) and the high parameter saturated vapor output channel (L2c) of Converter Steam storage heater (8) are connected to the steam inlet (402) of overheated afterburning stove (4) respectively, and the steam (vapor) outlet (403) of overheated afterburning stove (4) is connected to the main air intake (201) of steam turbine (2) through vapours main pipeline (L1a), central cooler waste heat boiler (6a) has high parameter drum (607) and central cooler waste heat boiler (6a) has superheater (610) in addition, the high parameter saturated vapor output channel (L2a) of drawing from the high parameter drum (607) of central cooler waste heat boiler (6a) is connected to the steam inlet (61001) of the built-in high parameter superheater (610) in central cooler waste heat boiler (6a), and the steam (vapor) outlet (61002) of central cooler waste heat boiler (6a) interior high parameter superheater (610) is connected to the main air intake (210) of steam turbine (2) respectively by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b) and/or is connected to the steam inlet (402) of overheated afterburning stove (4) by superheated steam branch road (L2d), the rotating shaft of steam turbine (2) connects or drives the rotating shaft of generator (1), and the steam drain (203) of steam turbine (2) is connected to condenser (3).
6. device according to claim 5, is characterized in that: the low parameter superheated steam that device also comprises central cooler waste heat boiler (6a) exports the filling mouth (202) that (60402) are connected to steam turbine (2).
7. the device according to any one of claim 1-6, is characterized in that: be provided with economizer (501), evaporimeter (502) be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum (503) in sintering smoke exhaust pipe waste heat boiler (5); And/or
The steam (vapor) outlet (902) of steelmaking converter drum (9) is connected with the steam inlet (801) of storage heater (8) by steelmaking converter drum saturated vapor pipeline (905).
8. device according to claim 7, it is characterized in that: this device is provided with water pump (7), the outlet of water pump (7) is connected to the water inlet (504) of the economizer (501) of sintering smoke exhaust pipe waste heat boiler (5) by the first water supply branch road (701), the outlet (50101) of economizer (501) is connected to first entrance (50301) of the drum (503) of sintering smoke exhaust pipe waste heat boiler (5), first outlet (50302) of drum (503) is connected with the entrance (50201) of evaporimeter (502), the outlet (50202) of evaporimeter (502) is connected with second entrance (50303) of drum (503), second outlet of drum (503) and high parameter steam (vapor) outlet (50304) are connected by the steam inlet (402) of saturated vapor pipeline (L2b) with overheated afterburning stove (4), preferably, the outlet bellows (506) sintering smoke exhaust pipe waste heat boiler (5) are connected with air-introduced machine (14), preferably, the entrance fan housing (505) of this sintering smoke exhaust pipe waste heat boiler (5) connects sintering device flue gas conveyance conduit (1201).
9. according to the device in claim 1-6 described in any one, it is characterized in that: be provided with condensation water heater (601), low parameter evaporimeter (602), low parameter superheater (604), high parameter economizer (605) and high parameter evaporimeter (606) in central cooler waste heat boiler (6) and be provided at an outer portion with central cooler waste heat boiler low parameter drum (603) and central cooler waste heat boiler high parameter drum (607).
10. device according to claim 7, is characterized in that: be provided with condensation water heater (601), low parameter evaporimeter (602), low parameter superheater (604), high parameter economizer (605) and high parameter evaporimeter (606) in central cooler waste heat boiler (6) and be provided at an outer portion with central cooler waste heat boiler low parameter drum (603) and central cooler waste heat boiler high parameter drum (607).
11. devices according to claim 8, is characterized in that: be provided with condensation water heater (601), low parameter evaporimeter (602), low parameter superheater (604), high parameter economizer (605) and high parameter evaporimeter (606) in central cooler waste heat boiler (6) and be provided at an outer portion with central cooler waste heat boiler low parameter drum (603) and central cooler waste heat boiler high parameter drum (607).
12. devices according to claim 9, it is characterized in that: also have oxygen-eliminating device (16) to be connected with central cooler waste heat boiler low parameter drum (603), external feedwater carrier pipe (13) or be connected to the entrance (60101) of the condensation water heater (601) of central cooler waste heat boiler (6) from the condensate water carrier pipe (13) that the delivery port of condenser (3) is drawn, the outlet (60102) of condensation water heater (601) is connected with the water inlet of oxygen-eliminating device (16), the delivery port of oxygen-eliminating device (16) is connected with first entrance (60301) of the low parameter drum (603) of central cooler waste heat boiler (6), first outlet (60302) of low parameter drum (603) is connected with the entrance (60201) of central cooler waste heat boiler low parameter evaporimeter (602), the outlet (60202) of low parameter evaporimeter (602) is connected with second entrance (60303) of low parameter drum (603), second outlet (60304) of central cooler waste heat boiler low parameter drum (603) is connected with the entrance (60401) of low parameter superheater (604), the outlet (60402) of low parameter superheater (604) is connected with the filling mouth (202) of steam turbine (2) by low parameter superheat steam pipeline (L3).
13. devices according to claim 10 or 11, it is characterized in that: also have oxygen-eliminating device (16) to be connected with central cooler waste heat boiler low parameter drum (603), external feedwater carrier pipe (13) or be connected to the entrance (60101) of the condensation water heater (601) of central cooler waste heat boiler (6) from the condensate water carrier pipe (13) that the delivery port of condenser (3) is drawn, the outlet (60102) of condensation water heater (601) is connected with the water inlet of oxygen-eliminating device (16), the delivery port of oxygen-eliminating device (16) is connected with first entrance (60301) of the low parameter drum (603) of central cooler waste heat boiler (6), first outlet (60302) of low parameter drum (603) is connected with the entrance (60201) of central cooler waste heat boiler low parameter evaporimeter (602), the outlet (60202) of low parameter evaporimeter (602) is connected with second entrance (60303) of low parameter drum (603), second outlet (60304) of central cooler waste heat boiler low parameter drum (603) is connected with the entrance (60401) of low parameter superheater (604), the outlet (60402) of low parameter superheater (604) is connected with the filling mouth (202) of steam turbine (2) by low parameter superheat steam pipeline (L3).
14. devices according to claim 9, it is characterized in that: also have the conveyance conduit (L5) of central cooler flue gas (15) and the high-temperature smoke discharging pipeline (L4) of overheated afterburning stove (4) to be connected to the smoke inlet end (609) of central cooler waste heat boiler (6) respectively, be connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) of central cooler waste heat boiler (6) with the outlet of water pump (7), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (402) of overheated afterburning stove (4) by saturated vapor pipeline (L2a), preferably, the outlet bellows (608) of central cooler waste heat boiler (6) are connected with air-introduced machine (14).
15. devices according to any one of claim 10-12, it is characterized in that: also have the conveyance conduit (L5) of central cooler flue gas (15) and the high-temperature smoke discharging pipeline (L4) of overheated afterburning stove (4) to be connected to the smoke inlet end (609) of central cooler waste heat boiler (6) respectively, be connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) of central cooler waste heat boiler (6) with the outlet of water pump (7), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (402) of overheated afterburning stove (4) by saturated vapor pipeline (L2a), preferably, the outlet bellows (608) of central cooler waste heat boiler (6) are connected with air-introduced machine (14).
16. devices according to claim 13, it is characterized in that: also have the conveyance conduit (L5) of central cooler flue gas (15) and the high-temperature smoke discharging pipeline (L4) of overheated afterburning stove (4) to be connected to the smoke inlet end (609) of central cooler waste heat boiler (6) respectively, be connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) of central cooler waste heat boiler (6) with the outlet of water pump (7), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (402) of overheated afterburning stove (4) by saturated vapor pipeline (L2a), preferably, the outlet bellows (608) of central cooler waste heat boiler (6) are connected with air-introduced machine (14).
17. devices according to claim 9, it is characterized in that: the outlet of water pump (7) is connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) of central cooler waste heat boiler (6), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (170101) of the high parameter superheater (1701) of external type overheating device by saturated vapor pipeline (L2a), the steam (vapor) outlet (170102) of external superheater (1701) is connected to the primary air inlet (201) of steam turbine (2) by superheat steam pipeline (L1b), preferably, the outlet bellows (608) of central cooler waste heat boiler (6) are connected with air-introduced machine (14).
18. devices according to any one of claim 10-12, it is characterized in that: the outlet of water pump (7) is connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) of central cooler waste heat boiler (6), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (170101) of the high parameter superheater (1701) of external type overheating device by saturated vapor pipeline (L2a), the steam (vapor) outlet (170102) of external superheater (1701) is connected to the primary air inlet (201) of steam turbine (2) by superheat steam pipeline (L1b), preferably, the outlet bellows (608) of central cooler waste heat boiler (6) are connected with air-introduced machine (14).
19. devices according to claim 13, it is characterized in that: the outlet of water pump (7) is connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) of central cooler waste heat boiler (6), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (170101) of the high parameter superheater (1701) of external type overheating device by saturated vapor pipeline (L2a), the steam (vapor) outlet (170102) of external superheater (1701) is connected to the primary air inlet (201) of steam turbine (2) by superheat steam pipeline (L1b), preferably, the outlet bellows (608) of central cooler waste heat boiler (6) are connected with air-introduced machine (14).
20. devices according to claim 17 or 19, it is characterized in that: also have central cooler high-temperature flue gas (1501) pipeline (L5a) to be connected with the smoke inlet end of external type overheating device (17) with overheated afterburning stove high-temperature smoke discharging pipeline (L4), the smoke outlet of external type overheating device (17) is connected with the smoke inlet end (609) of central cooler waste heat boiler (6) by superheater flue (L4a).
21. devices according to claim 18, it is characterized in that: also have central cooler high-temperature flue gas (1501) pipeline (L5a) to be connected with the smoke inlet end of external type overheating device (17) with overheated afterburning stove high-temperature smoke discharging pipeline (L4), the smoke outlet of external type overheating device (17) is connected with the smoke inlet end (609) of central cooler waste heat boiler (6) by superheater flue (L4a).
22. according to the device in claim 5,6 or 8 described in any one, it is characterized in that: be provided with condensation water heater (601), low parameter evaporimeter (602), low parameter superheater (604), high parameter economizer (605), high parameter evaporimeter (606) and high parameter superheater (610) in the central cooler waste heat boiler (6a) with built-in high parameter superheater (610), and be provided at an outer portion with central cooler waste heat boiler low parameter drum (603) and central cooler waste heat boiler high parameter drum (607).
23. according to the device in claim 7 described in any one, it is characterized in that: be provided with condensation water heater (601), low parameter evaporimeter (602), low parameter superheater (604), high parameter economizer (605), high parameter evaporimeter (606) and high parameter superheater (610) in the central cooler waste heat boiler (6a) with built-in high parameter superheater (610), and be provided at an outer portion with central cooler waste heat boiler low parameter drum (603) and central cooler waste heat boiler high parameter drum (607).
24. devices according to claim 22, it is characterized in that: also have the conveyance conduit (L5a) of central cooler high-temperature flue gas (1501) and the high-temperature smoke discharging pipeline (L4) of overheated afterburning stove (4) to be connected to the smoke inlet end (609) of the central cooler waste heat boiler (6a) with built-in high parameter superheater (610) respectively, in central cooler waste heat boiler, the conveyance conduit (L5b) of warm flue gas and/or low-temperature flue gas (1502) is connected to second smoke inlet (609a) of central cooler waste heat boiler (6a), be connected with central cooler waste heat boiler low parameter drum (603) with also having oxygen-eliminating device (16), external feedwater carrier pipe (13) or be connected to the entrance (60101) of the condensation water heater (601) of central cooler waste heat boiler (6a) from the condensate water carrier pipe (13) that the delivery port of condenser (3) is drawn, the outlet (60102) of condensation water heater (601) is connected with the water inlet of oxygen-eliminating device (16), the delivery port of oxygen-eliminating device (16) is connected with first entrance (60301) of the low parameter drum (603) of central cooler waste heat boiler (6a), first outlet (60302) of low parameter drum (603) is connected with the entrance (60201) of central cooler waste heat boiler low parameter evaporimeter (602), the outlet (60202) of low parameter evaporimeter (602) is connected with second entrance (60303) of low parameter drum (603), second outlet (60304) of central cooler waste heat boiler low parameter drum (603) is connected with the entrance (60401) of low parameter superheater (604), the outlet (60402) of low parameter superheater (604) is connected with the filling mouth (202) of steam turbine (2) by low parameter superheat steam pipeline (L3).
25. devices according to claim 23, it is characterized in that: also have the conveyance conduit (L5a) of central cooler high-temperature flue gas (1501) and the high-temperature smoke discharging pipeline (L4) of overheated afterburning stove (4) to be connected to the smoke inlet end (609) of the central cooler waste heat boiler (6a) with built-in high parameter superheater (610) respectively, in central cooler waste heat boiler, the conveyance conduit (L5b) of warm flue gas and/or low-temperature flue gas (1502) is connected to second smoke inlet (609a) of central cooler waste heat boiler (6a), be connected with central cooler waste heat boiler low parameter drum (603) with also having oxygen-eliminating device (16), external feedwater carrier pipe (13) or be connected to the entrance (60101) of the condensation water heater (601) of central cooler waste heat boiler (6a) from the condensate water carrier pipe (13) that the delivery port of condenser (3) is drawn, the outlet (60102) of condensation water heater (601) is connected with the water inlet of oxygen-eliminating device (16), the delivery port of oxygen-eliminating device (16) is connected with first entrance (60301) of the low parameter drum (603) of central cooler waste heat boiler (6a), first outlet (60302) of low parameter drum (603) is connected with the entrance (60201) of central cooler waste heat boiler low parameter evaporimeter (602), the outlet (60202) of low parameter evaporimeter (602) is connected with second entrance (60303) of low parameter drum (603), second outlet (60304) of central cooler waste heat boiler low parameter drum (603) is connected with the entrance (60401) of low parameter superheater (604), the outlet (60402) of low parameter superheater (604) is connected with the filling mouth (202) of steam turbine (2) by low parameter superheat steam pipeline (L3).
26. devices according to claim 22, it is characterized in that: the outlet of water pump (7) is connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) in the central cooler waste heat boiler (6a) with built-in high parameter superheater (610), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (61001) of built-in high parameter superheater (610) by saturated vapor pipeline (L2a), the steam (vapor) outlet (61002) of high parameter superheater (610) connects the primary air inlet (201) of steam turbine (2) by superheat steam pipeline (L1b), preferably, the outlet bellows (608) of built-in superheater central cooler waste heat boiler (6a) are connected with air-introduced machine (14).
27. devices according to any one of claim 23-25, it is characterized in that: the outlet of water pump (7) is connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) in the central cooler waste heat boiler (6a) with built-in high parameter superheater (610), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (61001) of built-in high parameter superheater (610) by saturated vapor pipeline (L2a), the steam (vapor) outlet (61002) of high parameter superheater (610) connects the primary air inlet (201) of steam turbine (2) by superheat steam pipeline (L1b), preferably, the outlet bellows (608) of built-in superheater central cooler waste heat boiler (6a) are connected with air-introduced machine (14).
28. devices according to any one of claim 1-6,8,11,12,16,19,21,23,25 or 26, is characterized in that: be provided with steam superheater (401), burner (407) and air blast (11) in overheated afterburning stove (4); Have gas piping (10) to be connected to overheated afterburning burner (407) gas entry (404), air blast (11) connects the air inlet of combustor (405) of overheated afterburning stove (4); The high-temperature smoke discharging mouth (406) of overheated afterburning stove (4) is connected to the smoke inlet end (609) of central cooler waste heat boiler (6) by high-temperature smoke discharging pipeline (L4), or the high-temperature smoke discharging mouth (406) of overheated afterburning stove (4) is connected to the smoke inlet of external type overheating device (17) by high-temperature smoke discharging pipeline (L4).
29. devices according to claim 7, is characterized in that: be provided with steam superheater (401), burner (407) and air blast (11) in overheated afterburning stove (4); Have gas piping (10) to be connected to overheated afterburning burner (407) gas entry (404), air blast (11) connects the air inlet of combustor (405) of overheated afterburning stove (4); The high-temperature smoke discharging mouth (406) of overheated afterburning stove (4) is connected to the smoke inlet end (609) of central cooler waste heat boiler (6) by high-temperature smoke discharging pipeline (L4), or the high-temperature smoke discharging mouth (406) of overheated afterburning stove (4) is connected to the smoke inlet of external type overheating device (17) by high-temperature smoke discharging pipeline (L4).
30. devices according to claim 18, is characterized in that: be provided with steam superheater (401), burner (407) and air blast (11) in overheated afterburning stove (4); Have gas piping (10) to be connected to overheated afterburning burner (407) gas entry (404), air blast (11) connects the air inlet of combustor (405) of overheated afterburning stove (4); The high-temperature smoke discharging mouth (406) of overheated afterburning stove (4) is connected to the smoke inlet end (609) of central cooler waste heat boiler (6) by high-temperature smoke discharging pipeline (L4), or the high-temperature smoke discharging mouth (406) of overheated afterburning stove (4) is connected to the smoke inlet of external type overheating device (17) by high-temperature smoke discharging pipeline (L4).
31. devices according to claim 27, is characterized in that: be provided with steam superheater (401), burner (407) and air blast (11) in overheated afterburning stove (4); Have gas piping (10) to be connected to overheated afterburning burner (407) gas entry (404), air blast (11) connects the air inlet of combustor (405) of overheated afterburning stove (4); The high-temperature smoke discharging mouth (406) of overheated afterburning stove (4) is connected to the smoke inlet end (609) of central cooler waste heat boiler (6) by high-temperature smoke discharging pipeline (L4), or the high-temperature smoke discharging mouth (406) of overheated afterburning stove (4) is connected to the smoke inlet of external type overheating device (17) by high-temperature smoke discharging pipeline (L4).
32. devices according to any one of claim 1-6,8,11,12,16,19,21,23,25,26 or 31, it is characterized in that: the rotating shaft (204) of steam turbine connects or drives the rotating shaft of generator (1), the steam drain (203) of steam turbine is connected with condenser (3), and the condensate water efferent duct (301) of condenser (3) is connected to external feedwater carrier pipe (13) or the condensate water carrier pipe (13) of central cooler waste heat boiler (6).
33. devices according to claim 7, it is characterized in that: the rotating shaft (204) of steam turbine connects or drives the rotating shaft of generator (1), the steam drain (203) of steam turbine is connected with condenser (3), and the condensate water efferent duct (301) of condenser (3) is connected to external feedwater carrier pipe (13) or the condensate water carrier pipe (13) of central cooler waste heat boiler (6).
34. devices according to claim 15, it is characterized in that: the rotating shaft (204) of steam turbine connects or drives the rotating shaft of generator (1), the steam drain (203) of steam turbine is connected with condenser (3), and the condensate water efferent duct (301) of condenser (3) is connected to external feedwater carrier pipe (13) or the condensate water carrier pipe (13) of central cooler waste heat boiler (6).
35. devices according to claim 22, it is characterized in that: the rotating shaft (204) of steam turbine connects or drives the rotating shaft of generator (1), the steam drain (203) of steam turbine is connected with condenser (3), and the condensate water efferent duct (301) of condenser (3) is connected to external feedwater carrier pipe (13) or the condensate water carrier pipe (13) of central cooler waste heat boiler (6).
36. devices according to claim 28, it is characterized in that: the rotating shaft (204) of steam turbine connects or drives the rotating shaft of generator (1), the steam drain (203) of steam turbine is connected with condenser (3), and the condensate water efferent duct (301) of condenser (3) is connected to external feedwater carrier pipe (13) or the condensate water carrier pipe (13) of central cooler waste heat boiler (6).
37. devices according to claim 9, it is characterized in that: the low parameter drum (603) of central cooler waste heat boiler (6) has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
38. devices according to claim 15, it is characterized in that: the low parameter drum (603) of central cooler waste heat boiler (6) has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
39. devices according to claim 20, it is characterized in that: the low parameter drum (603) of central cooler waste heat boiler (6) has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
40. devices according to claim 27, it is characterized in that: the low parameter drum (603) of central cooler waste heat boiler (6) has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
41. devices according to claim 32, it is characterized in that: the low parameter drum (603) of central cooler waste heat boiler (6) has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
42. devices according to any one of claim 11,12,16,19,21,23,25,26,31,36, it is characterized in that: the low parameter drum (603) of central cooler waste heat boiler (6) has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
43. devices according to claim 22, it is characterized in that: the low parameter drum (603) with the central cooler waste heat boiler (6a) of built-in superheater (610) also has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
44. devices according to any one of claim 23-26,29-31, it is characterized in that: the low parameter drum (603) with the central cooler waste heat boiler (6a) of built-in superheater (610) also has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
45. devices according to claim 27, it is characterized in that: the low parameter drum (603) with the central cooler waste heat boiler (6a) of built-in superheater (610) also has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
46. devices according to claim 28, it is characterized in that: the low parameter drum (603) with the central cooler waste heat boiler (6a) of built-in superheater (610) also has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
47. devices according to any one of claim 3-6, wherein superheated steam secondary duct (L1b) and superheated steam branch road (L2d) are set up in parallel or separate superheated steam branch road (L2d) from superheated steam secondary duct (L1b), and both are connected to the main air intake of steam turbine and the steam inlet (402) of overheated afterburning stove (4) respectively; Preferably, the first valve V1 is set on L1b pipeline after the branch point that L1b and L2d intersects and the second valve V2 is set on L2d pipeline simultaneously, or switch valve is set at the branch point place that L1b and L2d intersects.
48. devices according to any one of claim 1-6,8,11,12,16,19,21,23,25,26,31,36,41 or 46, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
49. devices according to claim 7, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
50. devices according to claim 18, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
51. devices according to claim 27, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
52. devices according to claim 28, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
53. devices according to claim 32, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
54. devices according to claim 42, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
55. devices according to claim 44, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
56. devices according to claim 47, is characterized in that: sintering smoke exhaust pipe waste heat boiler (5) is single pressure type wet steamer; And/or
Steam turbine (2) is condensing steam compensating turbine; And/or
Sintering circular-cooler waste heat boiler (6) is dual voltage type waste heat boiler.
CN201520308255.4U 2015-05-13 2015-05-13 Power generation facility is united with converter steam and sintering waste heat to coal gas Active CN204757708U (en)

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