CN206479054U - It is a kind of based on converter and the integrated electricity generation system of heater for rolling steel waste heat - Google Patents
It is a kind of based on converter and the integrated electricity generation system of heater for rolling steel waste heat Download PDFInfo
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- CN206479054U CN206479054U CN201720118936.3U CN201720118936U CN206479054U CN 206479054 U CN206479054 U CN 206479054U CN 201720118936 U CN201720118936 U CN 201720118936U CN 206479054 U CN206479054 U CN 206479054U
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- heater
- rolling steel
- waste heat
- converter
- steam
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a kind of based on converter and the integrated electricity generation system of heater for rolling steel waste heat, including converter waste-heat recovery device, heater for rolling steel furnace bottom water beam apparatus for vapour-cooling, heater for rolling steel tail flue gas waste heat reclaiming flue, high pressure drum, low pressure drum oxygen-eliminating device, steam turbine, generator, the saturated vapor that converter waste-heat recovery device is produced, the saturated vapor that heater for rolling steel furnace bottom water beam apparatus for vapour-cooling is produced, the saturated vapor that heater for rolling steel tail flue gas waste heat reclaiming flue is produced collects the superheater into heater for rolling steel tail flue gas waste heat reclaiming flue, the venthole of superheater is connected with steam turbine, steam turbine is connected with generator, steam red switch Steam Turbine is done work, so as to drive electrical power generators.The utility model comprehensively utilizes the waste heat of converter and heater for rolling steel, and compared with conventional converter UTILIZATION OF VESIDUAL HEAT IN and heater for rolling steel UTILIZATION OF VESIDUAL HEAT IN each independent pattern, therrmodynamic system is more compact, and cost of investment is lower.
Description
Technical field
The utility model is related to the field of energy-saving technology of steel industry, specifically, is related to a kind of converter that is based on rolling
The integrated electricity generation system of steel heater waste heat.
Background technology
There is substantial amounts of waste heat, waste energy resource in smelting procedure in iron and steel enterprise.In the last few years, each iron and steel enterprise is progressively
Pay attention to the recycling of steel mill's residual heat resources, and achieve certain effect.But, because engineering construction is typically all that split is built
If, each operation be all when building subpackage it is separately independent, each process process system of itself may optimization design, still
Because the system between each smelting procedure is not planned as a whole, lack integrated optimization and entirety between the residual heat resources in each process
Layout, causes the energy not obtain optimum use, causes a certain degree of energy loss.As iron and steel enterprise is to energy-saving and emission-reduction
Pay attention to day by day, how integrated coupling is carried out the residual heat system steel mill's each operation, to realize steel mill's afterheat utilizing system
Global optimization, improves the comprehensive utilization ratio of residual heat resources, has become steel-making enterprise increasingly concern.
In each smelting procedure of steel mill, steel making working procedure and steel rolling process are adjacent two procedures, but so far remaining
Heat utilization system is all separately provided, and does not comprehensively utilize the waste heat of converter and heater for rolling steel.
Utility model content
The utility model plan structure is a kind of based on converter and the integrated electricity generation system of heater for rolling steel waste heat, to converter
Residual heat resources and heater for rolling steel residual heat resources are integrated and are subject to Optimum utilization, can produce more considerable economic well-being of workers and staff,
With important practical significance.
According to one side of the present utility model there is provided a kind of based on converter and the integrated hair of heater for rolling steel waste heat
Electric system, including converter waste-heat recovery device 1, heater for rolling steel furnace bottom water beam apparatus for vapour-cooling 9, heater for rolling steel afterbody
Flue gas waste heat recovery flue 4, storage heater 2, steam turbine 10, generator 11, wherein, the heater for rolling steel tail flue gas waste heat is returned
Receive flue 4 to be arranged on after the air preheater of heater for rolling steel and arrangement for gas preheating along flue gas flow, more than converter
The stable steam of formation, which enters, after the intermediate steam that heat reclamation device 1 is produced is handled through storage heater is arranged on heater for rolling steel afterbody cigarette
Superheater 41 in gas waste heat reclaiming flue, heater for rolling steel furnace bottom water beam apparatus for vapour-cooling 9 produce saturated vapor and
The saturated vapor that heater for rolling steel tail flue gas waste heat reclaiming flue 4 is produced collects into the superheater 41, superheater 41
Venthole is connected with steam turbine 10, and the steam turbine is connected with the generator 11, steam red switch Steam Turbine acting, so that band
Dynamic electrical power generators.
Preferably, be provided with the heater for rolling steel tail flue gas waste heat reclaiming flue 4 sequentially connect superheater 41,
High pressure evaporator 42, high-pressure economizer 43, low pressure evaporator 44 and low-pressure coal saver 45, wherein, low pressure drum-oxygen-eliminating device 5 leads to
The water inlet that outlet pipe 53 is crossed with feed pump 6 is connected, the water inlet of the delivery port of the feed pump and the high-pressure economizer 43
Connection, the high-pressure economizer 43 is supplied water by pipeline 75 to the high pressure drum 7, and high pressure drum 7 passes through the first down-comer 71
Connected with the water inlet of the high pressure evaporator 42, the venthole of the high pressure evaporator passes through the first tedge 74 and the height
The rising mouth of pipe connection of drum 7 is pressed, carbonated drink natural convection loop is formed；High pressure drum 7 is followed by the second down-comer 72 with hot water
The water inlet connection of ring pump 8, the delivery port of the hot water circulating pump and the heater for rolling steel furnace bottom water beam apparatus for vapour-cooling 9
Water inlet connection, the venthole of the heater for rolling steel furnace bottom water beam apparatus for vapour-cooling 9 passes through the second tedge 73 and institute
The rising mouth of pipe for stating high pressure drum 7 is connected, formation carbonated drink forced circulation loop, and saturated vapor, the steel-making of the generation of high pressure drum 7
Stable steam after stove waste-heat recovery device 1 is produced and handled through storage heater is pooled in steam main 3, the steam main
Venthole is connected with superheater.
Preferably, low pressure drum-oxygen-eliminating device 5 is connected by the water inlet of the 3rd down-comer 52 and the low pressure evaporator 44
Logical, the venthole of the low pressure evaporator 44 is connected by the rising mouth of pipe of the 3rd tedge 54 and the low pressure drum-oxygen-eliminating device 5
It is logical, form carbonated drink natural convection loop.
Preferably, the steam drain of steam turbine 10 and condenser 12, the water inlet of condensate pump 13 along carbonated drink flow sequentially
Connection, wherein, the condensing water conduit of the delivery port of condensate pump 13 is divided into two-way, is filled all the way with the converter waste heat recovery
The water inlet for putting 1 is connected, and another road enters in low pressure cooker cylinder-oxygen-eliminating device 5 after being preheated through low-pressure coal saver 45.
Preferably, a bypass line 55 is separated on the steam main 3, the auxiliary with the low pressure drum-oxygen-eliminating device 5
Heat vapor interface connection.
Preferably, the superheater, high pressure evaporator, high-pressure economizer, low pressure evaporator, low-pressure coal saver are using inverse
Flow arrangement.
Preferably, the heater for rolling steel tail flue gas waste heat reclaiming flue is the flue or integrated remaining of built-in heat-transfer surface
Heat boiler.
Brief description of the drawings
By the way that embodiment is described with reference to accompanying drawings below, features described above of the present utility model and technological merit will
Become more fully apparent and be readily appreciated that.
Fig. 1 be represent the utility model embodiment based on converter and the integrated electricity generation system of heater for rolling steel waste heat
Schematic diagram.
Wherein, converter waste-heat recovery device 1, storage heater 2, steam main 3, heater for rolling steel tail flue gas waste heat recovery
Flue 4, superheater 41, high pressure evaporator 42, high-pressure economizer 43, low pressure evaporator 44, low-pressure coal saver 45, low pressure drum-
Oxygen-eliminating device 5, feed pump 6, high pressure drum 7, hot water circulating pump 8, heater for rolling steel furnace bottom water beam apparatus for vapour-cooling 9, steam turbine
10th, generator 11, condenser 12, condensate pump 13, the first down-comer 71, the second down-comer 72, on the second tedge 73, first
Riser 74, pipeline 75, pipeline 51, the 3rd down-comer 52, outlet pipe 53, the 3rd tedge 54.
Embodiment
It is described in the utility model integrated based on converter and heater for rolling steel waste heat to describe below with reference to the accompanying drawings
The embodiment of electricity generation system.One of ordinary skill in the art will recognize, without departing from spirit of the present utility model and model
In the case of enclosing, described embodiment can be modified with a variety of modes or its combination.Therefore, accompanying drawing and retouch
State inherently illustrative, be not intended to limit the scope of the claims.In addition, in this manual, accompanying drawing
Draw not in scale, and identical reference represents identical part.It should be noted that the high pressure, low pressure be for
The differentiation name distinguished boiler circuit two pressure ratings and carried out is (such as：High steam, the pressure of low-pressure steam are separately designed
For 1.6MPa, 0.5MPa), not absolute high pressure (such as 9.81MPa), absolute low pressure (such as 0.8MPa), also, the flowing of following carbonated drink
Flow in direction direction as shown in arrow in figure.
For steel-making main building and steel rolling main building close to advantage, the utility model heats converter and steel rolling
The residual heat resources of stove optimize integrated, construct a kind of based on converter and the integrated electricity generation system of heater for rolling steel waste heat.
The utility model heater for rolling steel that is particularly suitable for use in uses the situation of higher thermal value coal gas, or blending high heating value gas ratio compared with
High situation.Because calorific value of gas is higher, so preheating temperature needed for air and coal gas is not very high, or even sky need to be only preheated
Gas is without preheating gas so that the flue-gas temperature after air (or coal gas) preheating device is higher.Added based on converter with steel rolling
The integrated electricity generation system of hot stove waste heat mainly includes converter waste-heat recovery device 1, heater for rolling steel furnace bottom water beam Vaporizing cooling
Device 9, heater for rolling steel tail flue gas waste heat reclaiming flue 4, steam turbine 10, generator 11.The converter waste heat recovery dress
Putting can be electric furnace waste-heat recovery device or converter waste-heat recovery device or electric converter waste-heat recovery device.Will refining
The saturated vapor that saturated vapor, the heater for rolling steel furnace bottom water beam apparatus for vapour-cooling 9 of the generation of steel stove waste-heat recovery device 1 are produced
And the saturated vapor that heater for rolling steel tail flue gas waste heat reclaiming flue 4 is produced is collected, then together feeding is arranged on
Overheating Treatment is carried out in superheater 41 in heater for rolling steel tail flue gas waste heat reclaiming flue 4, superheated steam is obtained, finally send
Toward steam turbine 10, the steam turbine is connected with the generator, and the acting of steam red switch Steam Turbine drives generator 11 to generate electricity, real
The waste heat integrated generation of converter and heater for rolling steel is showed.
Its concrete technology flow process is described in detail with reference to Fig. 1.The converter waste-heat recovery device 1 passes through jet chimney
Connected with the storage heater 2, the intermediate steam that converter waste-heat recovery device 1 is produced sends into the storage heater, the accumulation of heat
The steam (vapor) outlet of device 2 is connected with the steam main 3, and storage heater 2 is used to stablize steam, and the saturated vapor for being interrupted generation is changed
For the saturated vapor continuously exported.
The heater for rolling steel tail flue gas waste heat reclaiming flue 4 is arranged on conventional heater for rolling steel along flue gas flow
Air preheater and arrangement for gas preheating after, for absorbing after-heat.The heater for rolling steel tail flue gas waste heat
Reclaim and the superheater 41 sequentially connected along flue gas flow be provided with flue 4, it is high pressure evaporator 42, high-pressure economizer 43, low
Press evaporator 44 and low-pressure coal saver 45.Especially, the superheater, high pressure evaporator, high-pressure economizer, low pressure evaporator,
Low-pressure coal saver uses counter-flow arrangement, can obtain higher heat exchange efficiency.
Low pressure drum-oxygen-eliminating device 5 is the combination of low pressure drum and oxygen-eliminating device, and oxygen-eliminating device is installed on the top of low pressure drum,
Low pressure drum doubles as deoxygenation water tank.The delivery port of the low pressure drum-oxygen-eliminating device 5 passes through outlet pipe 53 and the feed pump 6
Water inlet is connected, and the delivery port of the feed pump is connected with the water inlet of the high-pressure economizer 43.The high-pressure economizer 43
Delivery port connected by pipeline 75 with the water inlet of the high pressure drum 7, supplied water to high pressure drum 7.The high pressure drum 7 leads to
Cross the first down-comer 71 to connect with the water inlet of high pressure evaporator 42, the venthole of the high pressure evaporator 42 rises by first
Pipe 74 is connected with the rising mouth of pipe of the high pressure drum 7, forms carbonated drink natural convection loop.
High pressure drum 7 is connected by the second down-comer 72 with the water inlet of the hot water circulating pump 8, the hot water circulating pump
Delivery port connected with the water inlet of the heater for rolling steel furnace bottom water beam apparatus for vapour-cooling, the heater for rolling steel furnace bottom water
The venthole of beam apparatus for vapour-cooling is connected by the second tedge 73 with the rising mouth of pipe of the high pressure drum 7, forms carbonated drink
Forced circulation loop.And the steam that high pressure drum 7 is produced is pooled in steam main 3 by pipeline 76.
Steam main 3 and superheater 41, the steam turbine 10, the condenser 12 and the condensate pump 13 are along vapour
Water flow-path is sequentially connected, and the effect of wherein superheater 41 is that the saturated vapor for sending steam main 3 is converted to superheated steam, and
The steam discharge of steam turbine 10 is then condensed into condensate by condenser 12, and is transported to each waste heat recovery after being pressurizeed through condensate pump 13 and is filled
The water inlet put, specifically, the outlet condensing water conduit of the condensate pump 13 are divided into two-way, all the way with the converter more than
The water inlet connection of heat reclamation device 1, another road is connected with the water inlet of low-pressure coal saver 45.The low-pressure coal saver 45 goes out
The mouth of a river is connected by pipeline 51 with the water inlet of the low pressure drum-oxygen-eliminating device 5.
Low pressure drum-the oxygen-eliminating device 5 is connected by the 3rd down-comer 52 with the water inlet of low pressure evaporator 44, described low
The venthole of pressure evaporator 44 is connected by the 3rd tedge 54 with the rising mouth of pipe of the low pressure drum-oxygen-eliminating device, forms one
Individual natural convection loop.
In addition, separating a bypass line 55 on the steam main 3, add with the auxiliary of the low pressure drum-oxygen-eliminating device 5
Vapours orifice.
In addition, the condenser is provided with water supplement port, to supplement the carbonated drink lost in residual neat recovering system.
In addition, the heater for rolling steel tail flue gas waste heat reclaiming flue 4 is located under the exhaust pass of heater for rolling steel
Trip, the heater for rolling steel tail flue gas waste heat reclaiming flue 4 can be common flue, and set in flue heat-transfer surface,
It can also be integrated waste heat boiler.
In summary, the electricity generation system integrated with heater for rolling steel waste heat based on converter of the present utility model has following
Beneficial effect：
(1) compared with the usual manner that converter and heater for rolling steel waste heat recovery are independently arranged, the utility model passes through
The system integration realizes the waste heat focus utilization of converter and heater for rolling steel, and a whole set of therrmodynamic system is compacter, and layout is more
Finely, cost of investment is lower；In addition, for the saturated vapor that converter waste heat recovery is produced, the utility model is realized
The overheat of converter waste heat saturated vapor, more conventional converter waste heat saturated vapor can only be by the way of saturated vapor generating
Compare, can not only improve the operational efficiency of steam turbine, but also the working environment (raising steam quality) of steam turbine can be improved, prolong
The service life of long turbine blade.
(2) for the residual heat resources of heater for rolling steel, the utility model is by heater for rolling steel furnace bottom water beam Vaporizing cooling system
System and heater for rolling steel tail flue gas residual neat recovering system are integrated, unified layout, using heater for rolling steel furnace bottom water beam vapour
Change cooling device and heater for rolling steel tail flue gas waste-heat recovery device shares the mode of drum and oxygen-eliminating device, more conventional steel rolling
Heating furnace waste heat recovery pattern has obvious simplification, and gross investment is greatly reduced；In addition, carrying out heater for rolling steel furnace bottom water beam vapour
During the optimization design of change cooling system and heater for rolling steel tail flue gas residual neat recovering system, with reference to the vaporization of Bottom of Heating Furnace water beam
Cooling and the features of back-end ductwork waste heat recovery, the compound of naturally partial order forced circulation is designed to by steam-water circulation system
Endless form, takes into account the energy-saving run of system under conditions of guarantee system is safe and reliable；A whole set of afterheat generating system is set
Meter, and the annexation between each equipment, be integrated system security and heat-economy after optimization layout.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this area
Technical staff for, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within,
Any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.
Claims (7)
1. it is a kind of based on converter and the integrated electricity generation system of heater for rolling steel waste heat, including converter waste-heat recovery device (1),
Heater for rolling steel furnace bottom water beam apparatus for vapour-cooling (9), heater for rolling steel tail flue gas waste heat reclaiming flue (4), storage heater
(2), steam turbine (10), generator (11), wherein,
The air that the heater for rolling steel tail flue gas waste heat reclaiming flue (4) is arranged on heater for rolling steel along flue gas flow is pre-
After thermal and arrangement for gas preheating,
The stable steam of formation, which enters to be arranged on, after the intermediate steam that converter waste-heat recovery device (1) is produced is handled through storage heater rolls
Superheater (41) in steel heater tail flue gas waste heat reclaiming flue,
Saturated vapor and heater for rolling steel tail flue gas waste heat that heater for rolling steel furnace bottom water beam apparatus for vapour-cooling (9) is produced
The saturated vapor for reclaiming flue (4) generation collects into the superheater (41),
The venthole of superheater (41) is connected with steam turbine (10), and the steam turbine is connected with the generator (11), steam punching
Turn Steam Turbine acting, so as to drive electrical power generators.
2. according to claim 1 based on converter and the integrated electricity generation system of heater for rolling steel waste heat, the steel rolling adds
The superheater (41) sequentially connected, high pressure evaporator (42), high pressure is provided with hot stove tail flue gas waste heat reclaiming flue (4) to save
Coal device (43), low pressure evaporator (44) and low-pressure coal saver (45), wherein,
Low pressure drum-oxygen-eliminating device (5) is connected by outlet pipe (53) with the water inlet of feed pump (6), the water outlet of the feed pump
Mouthful connected with the water inlet of the high-pressure economizer (43), the high-pressure economizer (43) is by pipeline (75) to the pressure cooker
Cylinder (7) supplies water,
High pressure drum (7) is connected by the first down-comer (71) with the water inlet of the high pressure evaporator (42), and the high pressure is steamed
The venthole of hair device is connected by the first tedge (74) with the rising mouth of pipe of the high pressure drum (7), is formed carbonated drink and is followed naturally
Loop back path；
High pressure drum (7) is connected by the second down-comer (72) with the water inlet of hot water circulating pump (8), the hot water circulating pump
Delivery port is connected with the water inlet of the heater for rolling steel furnace bottom water beam apparatus for vapour-cooling (9), the heater for rolling steel furnace bottom
The venthole of water beam apparatus for vapour-cooling (9) is connected by the second tedge (73) with the rising mouth of pipe of the high pressure drum (7),
Carbonated drink forced circulation loop is formed,
And saturated vapor that high pressure drum (7) is produced, converter waste-heat recovery device (1) are produced and steady after being handled through storage heater
Determine steam to be pooled in steam main (3), the venthole of the steam main is connected with superheater.
3. it is according to claim 2 based on converter and the integrated electricity generation system of heater for rolling steel waste heat, low pressure drum-remove
Oxygen device (5) is connected by the 3rd down-comer (52) with the water inlet of the low pressure evaporator (44), the low pressure evaporator (44)
Venthole connected by the 3rd tedge (54) with the rising mouth of pipe of the low pressure drum-oxygen-eliminating device (5), form carbonated drink natural
Circulation loop.
4. it is according to claim 2 based on converter and the integrated electricity generation system of heater for rolling steel waste heat, steam turbine (10)
Steam drain sequentially connected along carbonated drink flow with the water inlet of condenser (12), condensate pump (13), wherein,
The condensing water conduit of condensate pump (13) delivery port is divided into two-way, all the way with the converter waste-heat recovery device
(1) water inlet connection, another road enters in low pressure cooker cylinder-oxygen-eliminating device (5) after being preheated through low-pressure coal saver (45).
5. according to claim 2 based on converter and the integrated electricity generation system of heater for rolling steel waste heat, the steam is female
A bypass line (55) is separated on pipe (3), is connected with the auxiliary heating vapor interface of the low pressure drum-oxygen-eliminating device (5).
6. it is according to claim 2 based on converter and the integrated electricity generation system of heater for rolling steel waste heat, the superheater,
High pressure evaporator, high-pressure economizer, low pressure evaporator, low-pressure coal saver use counter-flow arrangement.
7. it is according to claim 1 based on converter and the integrated electricity generation system of heater for rolling steel waste heat,
The heater for rolling steel tail flue gas waste heat reclaiming flue is the flue or integrated waste heat boiler of built-in heat-transfer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720118936.3U CN206479054U (en) | 2017-02-08 | 2017-02-08 | It is a kind of based on converter and the integrated electricity generation system of heater for rolling steel waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720118936.3U CN206479054U (en) | 2017-02-08 | 2017-02-08 | It is a kind of based on converter and the integrated electricity generation system of heater for rolling steel waste heat |
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| Publication Number | Publication Date |
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| CN206479054U true CN206479054U (en) | 2017-09-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643191A (en) * | 2017-02-08 | 2017-05-10 | 中冶华天工程技术有限公司 | Power generation system based on steel smelting furnace and steel rolling heating furnace waste heat integration |
-
2017
- 2017-02-08 CN CN201720118936.3U patent/CN206479054U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643191A (en) * | 2017-02-08 | 2017-05-10 | 中冶华天工程技术有限公司 | Power generation system based on steel smelting furnace and steel rolling heating furnace waste heat integration |
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