CN110206605A - A kind of dry coke quenching heat generating system again - Google Patents
A kind of dry coke quenching heat generating system again Download PDFInfo
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- CN110206605A CN110206605A CN201811547744.XA CN201811547744A CN110206605A CN 110206605 A CN110206605 A CN 110206605A CN 201811547744 A CN201811547744 A CN 201811547744A CN 110206605 A CN110206605 A CN 110206605A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/14—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours using industrial or other waste gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
- F22D1/08—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having fins, ribs, gills, corrugations, or the like on their outer surfaces, e.g. in vertical arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
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- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The present invention relates to the recycling of the waste heat of coking, metallurgical engineering technical field, particularly a kind of dry coke quenching heat generating system again, it is characterized in that: including at least: it is characterized in that: including at least: coke dry quenching furnace, disposable dust remover, waste heat boiler, steam turbine high-pressure cylinder, turbine low pressure cylinder, generator, condenser, condensate pump, water tank, deaerator feed water pump, secondary economizer, oxygen-eliminating device, boiler feed pump, secondary filter, circulating fan；The coke dry quenching furnace is electrically connected through disposable dust remover with exhaust-heat boiler inlet by high temperature circulation gas piping, the high temperature circulation gas of coke dry quenching furnace is sent to waste heat boiler, the bottom of waste heat boiler connects low-temperature circulating device pipeline, low-temperature circulating device pipeline is connected to secondary economizer, the bottom inlet of the outlet connection coke dry quenching furnace of secondary economizer through secondary filter, circulating fan.It provides a kind of generated output height and good in economic efficiency dry coke quenching heat generating system again.
Description
Technical field
The present invention relates to the recycling of the waste heat of coking, metallurgical engineering technical field, particularly a kind of dry coke quenching reheating power generations
System.
Background technique
Dry coke quenching cogeneration refers to that the heat for absorbing dry quenching system inertia recyclegas using coke dry quenching boiler generates
Steam converts heat into the process system that kinetic energy produces electricl energy to drawing generator subsequently into steam turbine.
The sensible heat of red coke is finally converted to electric energy by dry coke quenching afterheat generating system, can significantly reduce the power consumption of enterprise, and
Very big economic benefit can be brought.
Conventional dry coke quenching electrification technique such as Fig. 1 shows that the high temperature circulation gas that coke dry quenching furnace comes out is laggard through disposable dust remover
Enter coke dry quenching boiler, exchanging heat with water, it is (conventional for 450 DEG C of medium temperature and medium pressure 3.82MPa or high temperature and pressure 9.81MPa to generate steam
540 DEG C), steam is sent into conventional not reheat steam turbine, drawing generator power generation through pipeline；Steam after finishing function is cold through condenser
But at condensed water, it is sent into desalination pond or sweet-water tank through condensate pump, then by deaerator feed water pump after the heating of secondary economizer
It is sent into oxygen-eliminating device, the water after the completion of deoxygenation is pumped into coke dry quenching boiler through boiler feedwater and generates steam again；Oxygen-eliminating device heating is steamed
Vapour comes from steam turbine steam extraction or other satisfactory vapour sources.The low-temperature circulating gas come out from coke dry quenching boiler is through final dusting
Device, circulating fan, secondary economizer enter coke dry quenching furnace recycling.
Summary of the invention
The object of the present invention is to provide a kind of generated output height and good in economic efficiency dry coke quenching heat generating systems again.
The technical scheme is that a kind of dry coke quenching heat generating system again, it is characterized in that: including at least:
The equipment that coke dry quenching furnace is used to hot coke being cooled to cold coke by recyclegas, and sent out after recyclegas is heated；
Disposable dust remover is for removing dust in circulating hot gases by gravity mode；
Waste heat boiler is used for circulating hot gases and water heat exchange to reduce recyclegas temperature, and generates steam；
Steam turbine high-pressure cylinder is converted into mechanical energy for receiving the steam from waste heat boiler, and by the thermal energy of steam, while from
The steam of discharge is sent into waste heat boiler and is heated again；
Turbine low pressure cylinder converts mechanical energy for the thermal energy of steam for receiving the reheated steam from waste heat boiler, together
The steam that Shi Congben equipment excludes is sent into condenser；
Generator is used to convert electric energy for the mechanical energy of steam turbine high-pressure cylinder 4 and turbine low pressure cylinder；
Condenser is used to the steam that turbine low pressure cylinder is discharged being cooled to condensed water with recirculated water or air；
Condensate pump is used to the condensed water in condenser being delivered to water tank；
Water tank is storage condensed water, and receives external moisturizing；
Deaerator feed water pump is for sending the water in water tank to secondary economizer；
Secondary economizer is used for the low-temperature circulating gas using waste heat boiler discharge, heats water, while being lowered into following for coke dry quenching furnace
Ring gas temperature；
Oxygen-eliminating device is used to heat steam using oxygen-eliminating device, heats so that the water supply from secondary economizer reaches saturation state removing water
Middle oxygen；
Boiler feed pump is used to supply water to coke dry quenching furnace；
Secondary filter is a kind of cyclone dust removal equipment, and the dust in low-temperature circulating gas for waste heat boiler to be discharged is into one
Step is removed to protect circulating fan；
Circulating fan is used to low-temperature circulating gas improving pressure to overcome system resistance to be sent into secondary economizer and coke dry quenching furnace.
The coke dry quenching furnace is electrically connected through disposable dust remover with exhaust-heat boiler inlet by high temperature circulation gas piping, will be done
The high temperature circulation gas for putting out furnace is sent to waste heat boiler, and the bottom of waste heat boiler connects low-temperature circulating device pipeline, low-temperature circulating device pipe
Road is connected to secondary economizer, the bottom inlet of the outlet connection coke dry quenching furnace of secondary economizer through secondary filter, circulating fan；It is described
Waste heat boiler steam turbine high-pressure cylinder, the reheated steam pipework of waste heat boiler are connected with high pressure cylinder exhaust line through major steam line
Turbine low pressure cylinder is connected, controls generator after steam turbine high-pressure cylinder and turbine low pressure cylinder cascade.
The turbine low pressure cylinder has two-way output, and two-way output wherein connects condensing through exhaust equipment of LP casing road all the way
Device connects condensate pump by condenser 7, is transported to water tank by condensate pump, water tank also returns to pair through deaerator feed water pump
Economizer；The another way of turbine low pressure cylinder two-way output is connected to oxygen-eliminating device, secondary economizer through oxygen-eliminating device heating steam pipework
It is also connected to oxygen-eliminating device through oxygen-eliminating device inlet pipeline, oxygen-eliminating device connects waste heat boiler through boiler feed pump, boiler feedwater pipeline.
The waste heat boiler includes at least: recyclegas import, recyclegas outlet, high temperature superheater, steam reheating
Device, low temperature superheater, light pipe evaporator, fin pipe evaporator, economizer, boiler shell, drum are followed in boiler shell upper end
Ring gas feed has recyclegas outlet in boiler shell lower end, successively divides between recyclegas import and recyclegas outlet
It is furnished with high temperature superheater, steam reheater, low temperature superheater, light pipe evaporator, fin pipe evaporator, economizer, light pipe evaporation
Device, fin pipe evaporator have two-way external pipeline respectively, are successively light pipe evaporator steam outlet pipe road, light pipe evaporator water inlet pipe
Road, fin pipe evaporator steam outlet pipe road, fin pipe evaporator inlet pipeline, light pipe evaporator and fin pipe evaporator are respectively through light
Pipe evaporator steam outlet pipe road, light pipe evaporator inlet pipeline, fin pipe evaporator steam outlet pipe road, fin pipe evaporator inlet pipeline
Connect drum；The low temperature superheater has two-way external pipeline, all the way steam pipework and hyperthermia and superheating through high temperature superheater
Device connection, another way are connect through the steam pipework of low temperature superheater with drum；High temperature superheater is outer for steaming by high temperature superheater
Vapor pipeline is outer for connecting with main steam；Economizer is in boiler shell bottom, and economizer has two-way external pipeline, all the way boiler drum
Watering pipeline is connect with drum, and another way connects oxygen-eliminating device through boiler feedwater pipeline；The reheated device of the steam reheater into
Vapor pipeline, reheater steam outlet pipe road are separately connected outer device.
The recyclegas import is made by fire resisting pouring material or refractory brick and steel construction, be dry coke quenching recyclegas into
Enter the channel of waste heat boiler.
The boiler shell is the support construction being made into steel construction, and heating surfaces at different levels are arranged in inside, can be born certain
Load.
The high temperature superheater is the heat-transfer surface arranged by coiled pipe, the circulating air that its absorption cycle gas access is come in
Body heat content, and the steam from low temperature superheater is further overheated to the temperature for reaching requirement.
The steam reheater is the heat-transfer surface arranged by coiled pipe, recyclegas after its absorption high temperature superheater
Heat, and external steam is heated to certain temperature.
The low temperature superheater is the heat-transfer surface arranged by coiled pipe, recyclegas after its absorption steam reheater
Heat, and the saturated vapor heating from drum is reached into certain degree of superheat.
The light pipe evaporator is the heat-transfer surface rearranged by snakelike light pipe, it is recycled after absorbing low temperature superheater
The heat of gas, and the hot water heating from economizer is become into saturated vapor；Fin pipe evaporator is arranged by snakelike fin
The heat-transfer surface of composition, it absorbs the heat of recyclegas after light pipe evaporator, and the hot water heating from economizer is become
Saturated vapor；The heating surface that economizer is made of steel pipe or cast iron pipe, is mounted in the flue of boiler tail, utilizes boiler smoke
The heat of road tail portion low-temperature circulating gas heats water supply, to reduce exhaust gas temperature, improves boiler thermal efficiency.
In the art, coke dry quenching boiler generates the steam (pressure >=9.81MPa, temperature >=540 DEG C) of more high parameter；It is dry
Quenching boiler is additionally arranged steam reheater；Steam turbine is divided into high pressure cylinder and low pressure (LP) cylinder；The row of steam reheater steam turbine high-pressure cylinder
Vapour all enters turbine low pressure cylinder after steam reheater heats and does work again, vapor (steam) temperature >=540 DEG C after reheating；Oxygen-eliminating device
Low pressure (LP) cylinder steam extraction or other satisfactory vapour sources of the heating steam from steam turbine.By improving steam parameter and reheating,
The generated output of this technique can improve 7% or more than conventional dry coke quenching electrification technique, power.
Effect of the invention is: by this technique, waste heat boiler generates steam (pressure >=9.81MPa, the temperature of high parameter
>=540 DEG C)；Waste heat boiler is provided with steam reheater, and the steam discharge of steam turbine high-pressure cylinder is entered after steam reheater heats
Turbine low pressure cylinder does work again, vapor (steam) temperature >=540 DEG C after reheating；Heating low pressure (LP) cylinder of the steam from steam turbine of oxygen-eliminating device
Steam extraction or other satisfactory vapour sources.By improving steam parameter and reheating, the generated output of this technique is than conventional dry coke quenching
Electrification technique, power can improve 7% or more.
Detailed description of the invention
Below with reference to embodiment attached drawing, the invention will be further described:
Fig. 1 is existing dry coke quenching reheating electrification technique structural schematic diagram；
Fig. 2 is a kind of dry coke quenching reheating electrification technique structural schematic diagram of the embodiment of the present invention；
Fig. 3 is waste heat boiler composition figure of the present invention.
In figure: 1, coke dry quenching furnace, 2, disposable dust remover, 3, waste heat boiler, 4, steam turbine high-pressure cylinder, 5, turbine low pressure cylinder,
6, generator, 7, condenser, 8, condensate pump, 9, water tank, 10, deaerator feed water pump, 11, secondary economizer, 12, oxygen-eliminating device, 13,
Boiler feed pump, 14, secondary filter, 15, circulating fan, 16, high temperature circulation gas piping, 17, low-temperature circulating device pipeline,
18, major steam line, 19, high pressure cylinder exhaust line, 20, reheated steam pipeline, 21, exhaust equipment of LP casing road, 22, condensate pipe
Road, 23, secondary economizer supply line, 24, oxygen-eliminating device inlet pipeline, 25, boiler feedwater pipeline, 26, oxygen-eliminating device heating steam pipe
Road.27, recyclegas import, 28, high temperature superheater, 29, steam reheater, 30, low temperature superheater, 31, light pipe evaporator,
32, fin pipe evaporator, 33, economizer, 34, recyclegas outlet, 35, boiler shell, 36, drum, 37, water on boiler drum
Pipeline, 38, fin pipe evaporator inlet pipeline, 39, light pipe evaporator inlet pipeline, 40, fin pipe evaporator steam outlet pipe road,
41, light pipe evaporator steam outlet pipe road, 42, the steam pipework of low temperature superheater, 43, the steam pipework of high temperature superheater, 44, high temperature
Superheater is outer for steam pipework, 45, hot device admission passage, 46, reheater steam outlet pipe road.
Specific embodiment
As shown in Fig. 2, a kind of dry coke quenching heat generating system again, it is characterized in that: including at least: coke dry quenching furnace 1, disposable dust remover
2, waste heat boiler 3, steam turbine high-pressure cylinder 4, turbine low pressure cylinder 5, generator 6, condenser 7, condensate pump 8, water tank 9, deoxygenation
Device feed pump 10, secondary economizer 11, oxygen-eliminating device 12, boiler feed pump 13, secondary filter 14, circulating fan 15；
Coke dry quenching furnace 1 is electrically connected through disposable dust remover 2 with 3 entrance of waste heat boiler by high temperature circulation gas piping 16, by coke dry quenching furnace 1
High temperature circulation gas be sent to waste heat boiler 3, the bottom of waste heat boiler 3 connects low-temperature circulating device pipeline 17, low-temperature circulating device pipe
Road 17 is connected to secondary economizer 11, the bottom of the outlet connection coke dry quenching furnace 1 of secondary economizer 11 through secondary filter 14, circulating fan 15
Portion's entrance；The waste heat boiler 3 connects steam turbine high-pressure cylinder 4, waste heat through major steam line 18 and high pressure cylinder exhaust line 19
The reheated steam pipework 20 of boiler 3 connects turbine low pressure cylinder 5, and steam turbine high-pressure cylinder 4 controls after cascading with turbine low pressure cylinder 5
Generator 6.
Turbine low pressure cylinder 5 has two-way output, and two-way output wherein connects condenser through exhaust equipment of LP casing road 21 all the way
7, condensate pump 8 is connected by condenser 7, water tank 9 is transported to by condensate pump 8, water tank 9 is also returned to through deaerator feed water pump 10
To secondary economizer 11；The another way of 5 two-way of turbine low pressure cylinder output is connected to oxygen-eliminating device through oxygen-eliminating device heating steam pipework 26
12, secondary economizer 11 is also connected to oxygen-eliminating device 12 through oxygen-eliminating device inlet pipeline 24, and oxygen-eliminating device 12 is given through boiler feed pump 13, boiler
Water lines 25 connect waste heat boiler 3.
The equipment that coke dry quenching furnace 1 is used to hot coke being cooled to cold coke by recyclegas, and after recyclegas is heated
It sends out；
Disposable dust remover 2 is for removing dust in circulating hot gases by gravity mode；
Waste heat boiler 3 is used for circulating hot gases and water heat exchange to reduce recyclegas temperature, and generates steam；
Steam turbine high-pressure cylinder 4 converts mechanical energy for the thermal energy of steam for receiving the steam from waste heat boiler 3, simultaneously
Waste heat boiler 3 is sent into from the steam of discharge to be heated again；
Turbine low pressure cylinder 5 converts mechanical energy for the thermal energy of steam for receiving the reheated steam from waste heat boiler 3,
The steam excluded simultaneously from this equipment is sent into condenser 7；
Generator 6 is used to convert electric energy for the mechanical energy of steam turbine high-pressure cylinder 4 and turbine low pressure cylinder 5；
Condenser 7 is used to the steam that turbine low pressure cylinder 5 is discharged being cooled to condensed water with recirculated water or air；
Condensate pump 8 is used to the condensed water in condenser 7 being delivered to water tank 9；
Water tank 9 is storage condensed water, and receives external moisturizing；
Deaerator feed water pump 10 is for sending the water in water tank 9 to secondary economizer 11；
Secondary economizer 11 is used for the low-temperature circulating gas being discharged using waste heat boiler 3, heats water, while being lowered into coke dry quenching furnace 1
Recyclegas temperature；
Oxygen-eliminating device 12 is used to heat steam using oxygen-eliminating device, heats so that the water supply from secondary economizer 11 reaches saturation state and takes off
Except water oxygen；
Boiler feed pump 13 is used for the equipment to supply water to waste heat boiler 1.
Secondary filter 14 is a kind of cyclone dust removal equipment, in the low-temperature circulating gas for waste heat boiler 3 to be discharged
Dust is further removed to protect circulating fan 15；
Circulating fan 15 is used to low-temperature circulating gas improving pressure to overcome system resistance to be sent into secondary economizer 11 and coke dry quenching furnace
1。
This technique is connected each equipment by pipeline, and pipeline includes high temperature circulation gas piping 16, low-temperature circulating device pipe
Road 17, major steam line 18, high pressure cylinder exhaust line 19, reheated steam pipeline 20, exhaust equipment of LP casing road 21, condensate line
22, secondary economizer supply line 23, oxygen-eliminating device inlet pipeline 24, boiler feedwater pipeline 25, oxygen-eliminating device heat steam pipework 26.
As shown in figure 3, waste heat boiler 3 includes at least: recyclegas import 27, recyclegas export 34, high temperature superheater
28, steam reheater 29, low temperature superheater 30, light pipe evaporator 31, fin pipe evaporator 32, economizer 33, boiler shell 35,
Drum 36 has recyclegas import 27 in 35 upper end of boiler shell, has recyclegas to export 34 in 35 lower end of boiler shell, circulation
High temperature superheater 28, steam reheater 29, low temperature superheater have been sequentially distributed between gas feed 27 and recyclegas outlet 34
30, light pipe evaporator 31, fin pipe evaporator 32, economizer 33, light pipe evaporator 31, fin pipe evaporator 32 have two-way respectively
External pipeline is successively light pipe evaporator steam outlet pipe road 41, light pipe evaporator inlet pipeline 39, fin pipe evaporator steam outlet pipe road
40, fin pipe evaporator inlet pipeline 38, light pipe evaporator 31 and fin pipe evaporator 32 are respectively through light pipe evaporator steam outlet pipe
Road 41, light pipe evaporator inlet pipeline 39, fin pipe evaporator steam outlet pipe road 40, fin pipe evaporator inlet pipeline 38 connect vapour
Packet 36；
The low temperature superheater 30 has two-way external pipeline, all the way steam pipework 43 and high temperature superheater through high temperature superheater
28 connections, another way are connect through the steam pipework 42 of low temperature superheater with drum 36；
High temperature superheater 28 by high temperature superheater it is outer for steam pipework 44 with outside main steam for connecting；
Economizer 33 has two-way external pipeline in 35 bottom of boiler shell, economizer 33, all the way boiler drum watering pipeline 37 with
Drum 36 connects, and another way connects oxygen-eliminating device 12 through boiler feedwater pipeline 25；The reheated device of steam reheater 29 is into vapour
Pipeline 45, reheater steam outlet pipe road 46 are separately connected outer device.
Recyclegas import 27 is made by fire resisting pouring material or refractory brick and steel construction, is more than dry coke quenching recyclegas enters
The channel of heat boiler 3.
Boiler shell 35 is the support construction being made into steel construction, and heating surfaces at different levels are arranged in inside, can bear a constant load.
High temperature superheater 28 is the heat-transfer surface arranged by coiled pipe, the circulating air body heat that its absorption cycle gas access is come in
Amount, and the steam from low temperature superheater is further overheated to the temperature for reaching requirement.
Steam reheater 29 is the heat-transfer surface arranged by coiled pipe, it absorbs the heat of recyclegas after high temperature superheater 28
Amount, and external steam is heated to certain temperature.
Low temperature superheater 30 is the heat-transfer surface arranged by coiled pipe, it absorbs the heat of recyclegas after steam reheater 29
Amount, and the saturated vapor heating from drum is reached into certain degree of superheat.
Light pipe evaporator 31 is the heat-transfer surface rearranged by snakelike light pipe, it absorbs circulating air after low temperature superheater 30
The heat of body, and the hot water heating from economizer is become into saturated vapor.
Fin pipe evaporator 32 is the heat-transfer surface rearranged by snakelike fin, it is recycled after absorbing light pipe evaporator 31
The heat of gas, and the hot water heating from economizer is become into saturated vapor.
The heating surface that economizer 33 is made of steel pipe or cast iron pipe, is mounted in the flue of boiler tail, utilizes boiler
The heat of flue tail low-temperature circulating gas heats water supply, to reduce exhaust gas temperature, improves boiler thermal efficiency.
Recyclegas outlet 34 is welded to form by steel plate, the recyclegas discharge by it, after the completion of exchanging heat.
In the art, coke dry quenching boiler generates the steam (pressure >=9.81MPa, temperature >=540 DEG C) of more high parameter；It is dry
Quenching boiler is additionally arranged steam reheater；Steam turbine is divided into high pressure cylinder and low pressure (LP) cylinder；The row of steam reheater steam turbine high-pressure cylinder
Vapour all enters turbine low pressure cylinder after steam reheater heats and does work again, vapor (steam) temperature >=540 DEG C after reheating；Oxygen-eliminating device
Low pressure (LP) cylinder steam extraction or other satisfactory vapour sources of the heating steam from steam turbine.By improving steam parameter and reheating,
The generated output of this technique can improve 7% or more than conventional dry coke quenching electrification technique, power.
Claims (10)
1. a kind of dry coke quenching heat generating system again, it is characterized in that: including at least:
The equipment that coke dry quenching furnace (1) is used to hot coke being cooled to cold coke by recyclegas, and given after recyclegas is heated
Out；
Disposable dust remover (2) is for removing dust in circulating hot gases by gravity mode；
Waste heat boiler (3) is used for circulating hot gases and water heat exchange to reduce recyclegas temperature, and generates steam；
Steam turbine high-pressure cylinder (4) is used to receive the steam from waste heat boiler (3), and converts mechanical energy for the thermal energy of steam,
Waste heat boiler (3) are sent into from the steam of discharge simultaneously to be heated again；
Turbine low pressure cylinder (5) is used to receive the reheated steam from waste heat boiler (3), and converts machinery for the thermal energy of steam
Can, while the steam excluded from this equipment is sent into condenser (7)；
Generator (6) is used to convert electric energy for the mechanical energy of steam turbine high-pressure cylinder (4) and turbine low pressure cylinder (5)；
Condenser (7) is used to the steam that turbine low pressure cylinder (5) are discharged being cooled to condensed water with recirculated water or air；
Condensate pump (8) is used to the condensed water in condenser (7) being delivered to water tank (9)；
Water tank (9) is storage condensed water, and receives external moisturizing；
Deaerator feed water pump (10) is for sending the water in water tank (9) to secondary economizer (11)；
Secondary economizer (11) is used for the low-temperature circulating gas using waste heat boiler (3) discharge, heats water, while being lowered into dry put out
The recyclegas temperature of furnace (1)；
Oxygen-eliminating device (12) is used to heat steam using oxygen-eliminating device, heats so that the water supply from secondary economizer (11) reaches saturation shape
State removes water oxygen；
Boiler feed pump (13) is used to supply water to coke dry quenching furnace (1)；
Secondary filter (14) is a kind of cyclone dust removal equipment, in the low-temperature circulating gas for waste heat boiler (3) to be discharged
Dust is further removed to protect circulating fan (15)；
Circulating fan (15) is used to low-temperature circulating gas improving pressure to overcome system resistance to be sent into secondary economizer (11) and do
Put out furnace (1).
2. a kind of dry coke quenching according to claim 1 heat generating system again, it is characterized in that: the coke dry quenching furnace (1) passes through
High temperature circulation gas piping (16) is electrically connected through disposable dust remover (2) with waste heat boiler (3) entrance, and the high temperature of coke dry quenching furnace 1 is followed
Ring gas is sent to waste heat boiler (3), and the bottom of waste heat boiler (3) connects low-temperature circulating device pipeline (17), low-temperature circulating device pipeline
(17) it is connected to secondary economizer (11) through secondary filter (14), circulating fan (15), the outlet connection of secondary economizer (11) is dry
Put out the bottom inlet of furnace (1)；The waste heat boiler (3) connects vapour through major steam line (18) and high pressure cylinder exhaust line (19)
Turbine high pressure cylinder (4), waste heat boiler (3) reheated steam pipework (20) connect turbine low pressure cylinder (5), steam turbine high-pressure cylinder
(4) generator (6) are controlled with after turbine low pressure cylinder (5) cascade.
3. a kind of dry coke quenching according to claim 1 heat generating system again, it is characterized in that: the turbine low pressure cylinder
(5) there is two-way output, two-way output wherein connects condenser (7) through exhaust equipment of LP casing road (21) all the way, connects by condenser 7
Condensate pump (8) are connect, are transported to water tank (9) by condensate pump (8), water tank (9) also returns to pair through deaerator feed water pump (10)
Economizer (11)；The another way of turbine low pressure cylinder (5) two-way output is connected to deoxygenation through oxygen-eliminating device heating steam pipework (26)
Device (12), secondary economizer (11) are also connected to oxygen-eliminating device (12) through oxygen-eliminating device inlet pipeline (24), and oxygen-eliminating device (12) is given through boiler
Water pump (13), boiler feedwater pipeline (25) send connection waste heat boiler (3).
4. a kind of dry coke quenching according to claim 1 heat generating system again, it is characterized in that: the waste heat boiler (3) is extremely
It less include: recyclegas import (27), recyclegas outlet (34), high temperature superheater (28), steam reheater (29), low temperature mistake
Hot device (30), light pipe evaporator (31), fin pipe evaporator (32), economizer (33), boiler shell (35), drum (36),
Boiler shell (35) upper end has recyclegas import (27), has recyclegas to export (34) in boiler shell (35) lower end, circulation
High temperature superheater (28), steam reheater (29), low has been sequentially distributed between gas feed (27) and recyclegas outlet (34)
Warm superheater (30), light pipe evaporator (31), fin pipe evaporator (32), economizer (33), light pipe evaporator (31), extended surface tube
Evaporator (32) has two-way external pipeline respectively, is successively light pipe evaporator steam outlet pipe road (41), light pipe evaporator inlet pipeline
(39), fin pipe evaporator steam outlet pipe road (40), fin pipe evaporator inlet pipeline (38), light pipe evaporator (31) and extended surface tube
Evaporator (32) goes out through light pipe evaporator steam outlet pipe road (41), light pipe evaporator inlet pipeline (39), fin pipe evaporator respectively
Vapor pipeline (40), fin pipe evaporator inlet pipeline (38) connection drum (36)；The low temperature superheater (30) has outside two-way
Interface, the steam pipework through high temperature superheater (43) is connect with high temperature superheater (28) all the way, and another way is through low temperature superheater
Steam pipework (42) is connect with drum (36)；High temperature superheater (28) is outer for steam pipework (44) and main steaming by high temperature superheater
Vapour is outer for connection；Economizer (33) has two-way external pipeline in boiler shell (35) bottom, economizer (33), all the way boiler drum
Watering pipeline (37) is connect with drum (36), connect all the way with drum (36), another way through boiler feedwater pipeline (25) connect
Oxygen-eliminating device (12)；The reheated device admission passage (45) of the steam reheater (29), reheater steam outlet pipe road (46) connect respectively
Connect outer device.
5. a kind of dry coke quenching according to claim 4 heat generating system again, it is characterized in that: the recyclegas import
(27) it is made by fire resisting pouring material or refractory brick and steel construction, is the channel that dry coke quenching recyclegas enters waste heat boiler (3).
6. a kind of dry coke quenching according to claim 4 heat generating system again, it is characterized in that: boiler shell (35) is with steel knot
The support construction that structure is made into, inside arrange heating surfaces at different levels, can bear a constant load.
7. a kind of dry coke quenching according to claim 4 heat generating system again, it is characterized in that: the high temperature superheater (28)
It is the recyclegas heat that its absorption cycle gas access is come in by the heat-transfer surface of coiled pipe arrangement, and cryogenic overheating will be come from
The steam of device further overheats the temperature for reaching requirement.
8. a kind of dry coke quenching according to claim 4 heat generating system again, it is characterized in that: the steam reheater (29)
It is the heat-transfer surface arranged by coiled pipe, it absorbs the heat of recyclegas after high temperature superheater (28), and external steam is added
Heat arrives certain temperature.
9. a kind of dry coke quenching according to claim 4 heat generating system again, it is characterized in that: the low temperature superheater (30)
It is the heat-transfer surface arranged by coiled pipe, it absorbs the heat of recyclegas after steam reheater (29), and will be from drum
Saturated vapor heating reaches certain degree of superheat.
10. a kind of dry coke quenching according to claim 1 heat generating system again, it is characterized in that: the light pipe evaporator
It (31) is the heat-transfer surface rearranged by snakelike light pipe, it absorbs the heat of recyclegas after low temperature superheater (30), and will
Hot water heating from economizer becomes saturated vapor；Fin pipe evaporator (32) is the heat exchange rearranged by snakelike fin
Face, it absorbs the heat of recyclegas after light pipe evaporator (31), and the hot water heating from economizer is become saturation and is steamed
Vapour；The heating surface that economizer (33) is made of steel pipe or cast iron pipe, is mounted in the flue of boiler tail, utilizes boiler flue
The heat of tail portion low-temperature circulating gas heats water supply, to reduce exhaust gas temperature, improves boiler thermal efficiency.
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| CN114777098A (en) * | 2022-05-25 | 2022-07-22 | 西安热工研究院有限公司 | Boiler system of thermal power plant and steam turbine power generation system with same |
| CN115406252A (en) * | 2022-08-11 | 2022-11-29 | 中材节能股份有限公司 | Cement kiln waste heat comprehensive utilization method based on single reheating technology |
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| CN115406252A (en) * | 2022-08-11 | 2022-11-29 | 中材节能股份有限公司 | Cement kiln waste heat comprehensive utilization method based on single reheating technology |
| CN115406252B (en) * | 2022-08-11 | 2024-05-24 | 中材节能股份有限公司 | Cement kiln waste heat comprehensive utilization method based on one-time reheating technology |
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