CN108979773A - Can-type calcine furnace waste heat efficient power generation system based on piping-main scheme - Google Patents
Can-type calcine furnace waste heat efficient power generation system based on piping-main scheme Download PDFInfo
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- CN108979773A CN108979773A CN201810979893.7A CN201810979893A CN108979773A CN 108979773 A CN108979773 A CN 108979773A CN 201810979893 A CN201810979893 A CN 201810979893A CN 108979773 A CN108979773 A CN 108979773A
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- 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
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- 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
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- 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
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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
- F22B1/1807—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 using the exhaust gases of 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
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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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
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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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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
Can-type calcine furnace waste heat efficient power generation system based on piping-main scheme includes steam turbine, generator, oxygen-eliminating device, high steam main pipe, low-pressure steam main pipe, oxygen-eliminating device water inlet main pipe, low pressure feed water main pipe, low pressure feed water pump and at least a set of cogeneration subsystem, the venthole of each high-pressure superheater passes through high steam main pipe and is connected to the main steam ports of steam turbine, the venthole of each low-pressure superheater passes through low-pressure steam main pipe and is connected to the filling mouth of steam turbine, steam turbine drags the electrical power generators, in a set of cogeneration subsystem in office: forming low pressure vapor circulation loop between low pressure drum and calcined coke Vaporizing cooling module；Low pressure vapor circulation loop is formed between low pressure drum and low pressure evaporator, and high pressure steam/water circulating circuit is formed between high pressure drum and high pressure evaporator.The system is recycled calcined coke waste heat, compact layout, and cost of investment is low.The resource utilization of calcine technology is promoted, purchase of electricity outside charcoal ink factory is reduced, reduces charcoal ink factory's production cost.
Description
Technical field
The present invention relates to carbon industry technical field of waste heat utilization more particularly to a kind of can-type calcine furnaces based on piping-main scheme
Waste heat efficient power generation system.
Background technique
Carbon material is one of primary raw material of electrolytic aluminium production process, and the production of carbon material product is to restrict aluminum i ndustry
The key link of development.China's aluminum i ndustry develops in recent years enters express passway, and aluminium cathode develops therewith, carbon material system
Product production capacity develops from the ten-million-ton scale of megaton increase till now several years ago with certain speedup.
Can-type calcine furnace is one of the capital equipment in charcoal element production technology, can be calcined the petroleum of different volatile contents
Coke, the bulk density that there is calcination to expect that quality is stable, carbon burnt loss rate is low, burnt after forging is high, easy to operate, maintenance workload is small,
Therefore the advantages that continuous production period is long is widely used in charcoal ink factory and aluminium manufacturer.
When being calcined using calcining furnace to raw material, the heat that volatile fraction in petroleum coke burning generates removes to be calcined petroleum
Except needed for burnt, it is discharged there are also a large amount of surplus heat with flue gas, flue-gas temperature is even as high as 900 DEG C.According to heat Balance Calculation,
Raw material calcination heat absorption only accounts for the 33.5% of calcining furnace heat expenditure, and is calcined the heat that flue gas is taken away and accounts for entire calcining furnace heat branch
Out 47.9%.However, that is, flue-gas temperature is high, but exhaust gas volumn is small, this is resulted in since calcining kiln gas has a obvious characteristic
Charcoal ink factory is less positive for the waste heat recycling of calcining furnace high-temperature flue gas, or even there are many charcoal ink factories to use air-blast cooled side
Cryogenic air is mixed into high-temperature flue gas by high power air blowers by formula, carry out forced cooling and then drain into atmosphere, cause preciousness
Fume afterheat resource waste, and the newly-increased power consumption of high power air blowers also brings mentioning for charcoal element production cost
It rises.
In addition, the high temperature calcined coke (temperature is up to 1000 DEG C) of can-type calcine furnace discharge outlet also contains a large amount of sensible heat,
Currently used method is that cooling jacket is arranged below calcining furnace, is carried out by recirculated cooling water to high temperature calcined coke cold
But, the calcined coke indirect heat exchange of the cooling water in cooling jacket and calcining furnace, the cooling water after heat absorption, which is sent to cooling tower, to radiate, so
After return to water jacket, intake as cooling jacket, so recycle, it is clear that this mode results in the waste of a large amount of thermal energy.
Therefore, if a set of calcining furnace afterheat utilizing system can be constructed, to the calcining furnace flue gas exhaust heat of charcoal ink factory and after forging
Burnt waste heat carries out high efficiente callback, can necessarily generate considerable economic well-being of workers and staff.
Summary of the invention
In order to solve the above problem, the present invention provides a kind of can-type calcine furnace waste heat efficient power generation system based on piping-main scheme,
Including steam turbine (4), generator (5), oxygen-eliminating device (8), high steam main pipe (14), low-pressure steam main pipe (15), oxygen-eliminating device into
Jellyfish pipe (16), low pressure feed water main pipe (17), low pressure feed water pump (9) and at least a set of cogeneration subsystem, any set waste heat
Power generation sub-system all include at least can-type calcine furnace (1), calcined coke cooling device (2), waste heat boiler (3), low pressure drum (10),
High pressure drum (13), high pressure water pump (12), the waste heat boiler include high-pressure superheater (301), high pressure evaporator (302),
High-pressure economizer (303), low-pressure superheater (304), low pressure evaporator (305), low-pressure coal saver (306), also, it is each forge after
Burnt cooling device includes calcined coke Vaporizing cooling module (201) and calcined coke water cooling module (202), the calcined coke Vaporizing cooling
Module is located at the high temperature side of calcined coke, and the calcined coke water cooling module is located at calcined coke low temperature side, wherein each calcined coke water cooled mo(u)ld
The water outlet of block and each low-pressure coal saver is connected to the water inlet of oxygen-eliminating device by oxygen-eliminating device water inlet main pipe, the oxygen-eliminating device
Water outlet is pumped with low pressure feed water, low pressure feed water main pipe is sequentially connected to, the water inlet of the low pressure feed water main pipe and each low pressure drum
Connection is supplied water to each low pressure drum；The air intake of the steam (vapor) outlet of high pressure drum and the high-pressure superheater of corresponding waste heat boiler
Connection, the venthole of the high-pressure superheater of each waste heat boiler passes through high steam main pipe and is connected to the main steam ports of steam turbine, low
The steam (vapor) outlet of pressure drum is connected to the air intake of the low-pressure superheater of waste heat boiler, and the low-pressure superheater of each waste heat boiler goes out
Steam ports passes through low-pressure steam main pipe and is connected to the filling mouth of steam turbine, and the steam turbine is connected with the generator, the vapour
Turbine drags the electrical power generators, wherein in a set of cogeneration subsystem in office: the discharge port of the can-type calcine furnace with
The feed inlet of the calcined coke cooling device is connected to, and the high temperature calcined coke that the can-type calcine furnace comes out is in calcined coke cooling device
Middle heat exchange cooling, and the exhanst gas outlet of the can-type calcine furnace is then connected to the gas inlet of the waste heat boiler, the pot type
The high-temperature flue gas that calcining furnace comes out exchange heat cooling in waste heat boiler, and low pressure drum passes through the first down-comer (101) and calcined coke
The water inlet of Vaporizing cooling module is connected to, and is connected to by the first tedge (102) with the venthole of calcined coke Vaporizing cooling module,
A low pressure vapor circulation loop is formed, the low pressure drum is the water supply of calcined coke cooling device, and to the steam-water mixing of generation
Object is separated；The low pressure drum also passes through the low pressure evaporator (305) of the second down-comer (103) and the waste heat boiler
Water inlet connection, is connected to by the second tedge (104) with the venthole of low pressure evaporator, another low pressure vapor circulation is formed
Circuit, the low pressure drum is low pressure evaporator water supply, and is separated to the steam water interface of generation, low pressure drum
Water outlet is connected to by high pressure water pump with the water inlet of high-pressure economizer (303), the water outlet of the high-pressure economizer (303)
It is connected to the water inlet of the high pressure drum, supplies water for the high pressure drum, the high pressure drum passes through third down-comer (105)
It is connected to the water inlet of the high pressure evaporator (302) of the waste heat boiler, passes through third tedge (106) and the waste heat boiler
High pressure evaporator venthole connection, form a high pressure steam/water circulating circuit, the high pressure drum is the high-pressure evaporation
Device supplies water, and for separating to the steam water interface that it is generated.
It preferably, further include condenser (6), condensate pump (7), condensate pump main water outlet pipe (18), the steam turbine
Steam drain is sequentially connected to condenser, condensate pump, condensate pump main water outlet pipe along carbonated drink flow direction, the condensate pump main water outlet
Pipe is connected to the water inlet of the water inlet of calcined coke water cooling module, low-pressure coal saver respectively.
Preferably, the high-pressure superheater, high pressure evaporator, high-pressure economizer, low in any set cogeneration subsystem
Pressure superheater, low pressure evaporator, low-pressure coal saver are sequentially arranged along flue gas flow direction in the waste heat boiler.
Preferably, the steam turbine is additionally provided with low-pressure pumping steam mouth, the heating steam of the low-pressure pumping steam mouth and oxygen-eliminating device
Inlet communication provides deoxygenation vapour for the oxygen-eliminating device.
Preferably, any set cogeneration subsystem further includes circulating pump (11), and the circulating pump (11) is set to first
On down-comer (101), to drive the low pressure vapor between the low pressure drum (10) and the calcined coke Vaporizing cooling module strong
System circulation.
The beneficial effects of the present invention are:
1) a kind of can-type calcine furnace waste heat efficient power generation system based on piping-main scheme is constructed, it will be after the forging of can-type calcine furnace
Burnt waste heat and fume afterheat carry out unified recycling, and are designed to integral system, use apparatus for vapour-cooling to calcined coke sensible heat
It is recycled, obvious heat of smoke is recycled using waste heat boiler, the saturated vapor that apparatus for vapour-cooling generates is sent into waste heat pot
Furnace is overheated, and the superheated steam of heat boiler outlet enters steam turbine, and driving steam turbine acting power generation realizes pot type calcining
Furnace calcined coke and fume afterheat integration recycle.The whole series therrmodynamic system scientific design of the invention, compact layout, occupied area
It is small, cost of investment is low.
2) for calcined coke high-temperature residual heat, compared with using the cooling usual manner of water jacket, the present invention passes through Vaporizing cooling
Device is recycled, and is converted to valuable steam resource, and generate electricity for driving steam turbine, is greatly improved calcine technology
Resource utilization, reduce the outer purchase of electricity of charcoal ink factory, reduce the production cost of charcoal ink factory.
3) in boiler circuit design aspect, the present invention shares drum and deoxygenation using calcined coke cooling device and waste heat boiler
The mode of device effectively improves the integrated level of system；In view of the service condition of calcined coke cooling device, and in order to ensure its is cold
But effect, calcined coke cooling device is designed to low pressure vapor system by the present invention, and uses forced circulation mode, passes through circulating pump
The circular flow of entire boiler circuit is driven, and for the steam/water circulating of waste heat boiler, then natural circulation mode is used, to reduce
System power consumption, so that package unit has effectively taken into account the energy conservation fortune of system under conditions of guarantee system is safe and reliable
Row.In addition, waste heat boiler boiler circuit is designed to the double pressure boiler circuits of high and low pressure, not only by the way that waste heat boiler row is greatly reduced
Smoke temperature degree realizes energy step Optimum utilization in turn according to energy grade height in turn from Mist heat recovering in " amount "
From Mist heat recovering in " matter ".
Detailed description of the invention
By the way that embodiment is described in conjunction with following accompanying drawings, features described above of the invention and technological merit will become
More understands and be readily appreciated that.
Fig. 1 is the technique stream for indicating the can-type calcine furnace waste heat efficient power generation system based on piping-main scheme of the embodiment of the present invention
Cheng Tu.
Specific embodiment
The can-type calcine furnace waste heat efficiency power generation system of the present invention based on piping-main scheme described below with reference to the accompanying drawings
The embodiment of system.Those skilled in the art will recognize, without departing from the spirit and scope of the present invention,
Described embodiment can be modified with a variety of different modes or combinations thereof.Therefore, attached drawing and description in itself
Be it is illustrative, be not intended to limit the scope of the claims.In addition, in the present specification, attached drawing is drawn not in scale
Out, and identical appended drawing reference indicates identical part.
Can-type calcine furnace waste heat efficient power generation system based on piping-main scheme includes at least a set of cogeneration subsystem, any
Cogeneration subsystem all includes at least can-type calcine furnace 1, calcined coke cooling device 2, waste heat boiler 3, low pressure drum 10, high pressure
Drum 13, high pressure water pump 12.And it covers cogeneration subsystem more and shares steam turbine 4, generator 5, oxygen-eliminating device 8, high steam
Main pipe 14, low-pressure steam main pipe 15, oxygen-eliminating device water inlet main pipe 16, low pressure feed water main pipe 17, low pressure feed water pump 9.Hereinafter only with
It is illustrated for a set of cogeneration subsystem.
Wherein, the discharge port of the can-type calcine furnace 1 is connected to the feed inlet of the calcined coke cooling device 2, the tank
The high temperature calcined coke that formula calcining furnace 2 comes out exchanges heat cooling in calcined coke cooling device 2.And the flue gas of the can-type calcine furnace 1
Outlet is then connected to the gas inlet of the waste heat boiler 3, and the high-temperature flue gas that the can-type calcine furnace 1 comes out is in waste heat boiler 3
Middle heat exchange cooling.Preferably, the calcined coke cooling device 2 includes calcined coke Vaporizing cooling module 201 and calcined coke water cooled mo(u)ld
Block 202, the calcined coke Vaporizing cooling module 201 are located at the high temperature side of calcined coke, and the calcined coke water cooling module 202, which is located at, forges
Burnt low temperature side afterwards.
The waste heat boiler 3 is internally provided with multistage heating surface, including high-pressure superheater 301, high pressure evaporator 302,
High-pressure economizer 303, low-pressure superheater 304, low pressure evaporator 305, low-pressure coal saver 306.The high-pressure superheater 301 goes out
Steam ports is connected to by high steam main pipe 14 with the main steam ports of steam turbine 4, if there is more set cogeneration subsystems, then each remaining
The venthole of the high-pressure superheater 301 of the waste heat boiler 3 of hot power generation sub-system is all connected to high steam main pipe 14.Such as Fig. 1 institute
Show, the venthole of N number of high-pressure superheater 301 is all connected to high steam main pipe 14.The venthole of the low-pressure superheater 304 is logical
Low-pressure steam main pipe 15 is crossed to be connected to the filling mouth of steam turbine 4 (if having more set cogeneration subsystems, then each cogeneration
The venthole of the low-pressure superheater 304 of the waste heat boiler 3 of subsystem all with 15 connection of low-pressure steam main pipe).The steam turbine 4 with
The generator 5 is connected, and the steam turbine 4 drags the generator 5 and generates electricity.
It preferably, can also include condensate pump main water outlet pipe 18, condenser 6, condensate pump 7, the row of the steam turbine 4
Steam ports is sequentially connected to condenser 6, condensate pump 7, condensate pump main water outlet pipe 18 along carbonated drink flow direction, the condensate pump water outlet
Main pipe 18 is connected to respectively (if having more than more sets with the water inlet of the water inlet of calcined coke water cooling module 202, low-pressure coal saver 306
Hot power generation sub-system, then the calcined coke water cooling module 202 and low pressure of condensate pump main water outlet pipe 18 and each cogeneration subsystem
Economizer 306 is respectively communicated with).Water inlet of the water outlet of calcined coke water cooling module 202 and low-pressure coal saver 306 with oxygen-eliminating device 8
Mouthful being intake by oxygen-eliminating device, the connection of main pipe 16 (if there is more set cogeneration subsystems, then forge by each cogeneration subsystem
The water outlet of burnt water cooling module 202 and low-pressure coal saver 306 is all connected to oxygen-eliminating device water inlet main pipe 16 afterwards).
The water outlet of the oxygen-eliminating device 8 is sequentially connected to low pressure feed water pump 9, low pressure feed water main pipe 17, the low pressure feed water
Main pipe 17 is connected to the water inlet of low pressure drum 10, supply water to the low pressure drum 10 (if having cover cogeneration subsystems,
Then low pressure feed water main pipe 17 is connected to the water inlet of the low pressure drum 10 of each cogeneration subsystem).
The low pressure drum 10 is connected by the first down-comer 101 and the water inlet of the calcined coke Vaporizing cooling module 201
It is logical, it is connected to by the first tedge 102 with the venthole of calcined coke Vaporizing cooling module 201, forms a low pressure vapor circulation
Circuit, the low pressure drum 10 is the water supply of calcined coke Vaporizing cooling module 201, and the steam water interface for generating to it carries out
Separation.
The low pressure drum 10 also passes through the second down-comer 103, the second tedge 104 and the waste heat boiler 3 respectively
The water inlet of low pressure evaporator 305, venthole connection, form another low pressure vapor circulation loop, the low pressure drum 10 is
The low pressure evaporator 305 supplies water, and for separating to the steam water interface that it is generated.
The water outlet of the low pressure drum 10 is connected by the water inlet of high pressure water pump 12 and the high-pressure economizer 303
Logical, the water outlet of the high-pressure economizer 303 is connected to the water inlet of the high pressure drum 13, is supplied for the high pressure drum 13
Water.
The water inlet that the high pressure drum 13 passes through third down-comer 105 and the high pressure evaporator 302 of the waste heat boiler 3
Connection, is connected to the venthole of the high pressure evaporator 302 of the waste heat boiler 3 by third tedge 106, forms a high pressure
Steam/water circulating circuit, the high pressure drum 13 are the steam water interface that the high pressure evaporator 302 supplies water, and is used to generate it
It is separated.
The steam (vapor) outlet of the low pressure drum 10 is connected to the air intake of the low-pressure superheater 303 of the waste heat boiler 3, institute
The outlet saturated vapor for stating low pressure drum 10 is sent into the low-pressure superheater 303 and is overheated.
The steam (vapor) outlet of the high pressure drum 13 is connected to the air intake of the high-pressure superheater 301 of the waste heat boiler 3, high
The outlet saturated vapor of pressure drum 13 is sent into the high-pressure superheater 301 and is overheated.
In one alternate embodiment, the high-pressure superheater 301, high pressure evaporator 302, high-pressure economizer 303, low pressure
Superheater 304, low pressure evaporator 305, low-pressure coal saver 306 are sequentially arranged along flue gas flow direction in the waste heat boiler.
In one alternate embodiment, the steam turbine 4 is additionally provided with low-pressure pumping steam mouth, the low-pressure pumping steam mouth and deoxygenation
The heating steam inlet of device 8 is connected to, and provides deoxygenation vapour for the oxygen-eliminating device 8.
It in one alternate embodiment, further include circulating pump 11, the circulating pump 11 is set on the first down-comer 101,
To drive the low pressure vapor forced circulation between the low pressure drum 10 and the calcined coke Vaporizing cooling module 201.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of can-type calcine furnace waste heat efficient power generation system based on piping-main scheme, which is characterized in that including steam turbine (4), hair
Motor (5), oxygen-eliminating device (8), high steam main pipe (14), low-pressure steam main pipe (15), oxygen-eliminating device water inlet main pipe (16), low pressure are given
Jellyfish pipe (17), low pressure feed water pump (9) and at least a set of cogeneration subsystem, any set cogeneration subsystem all at least wrap
Include can-type calcine furnace (1), calcined coke cooling device (2), waste heat boiler (3), low pressure drum (10), high pressure drum (13), high pressure
Feed pump (12), the waste heat boiler includes high-pressure superheater (301), high pressure evaporator (302), high-pressure economizer (303), low
Superheater (304), low pressure evaporator (305), low-pressure coal saver (306) are pressed, also,
Each calcined coke cooling device includes calcined coke Vaporizing cooling module (201) and calcined coke water cooling module (202), described to forge
Burnt Vaporizing cooling module is located at the high temperature side of calcined coke afterwards, and the calcined coke water cooling module is located at calcined coke low temperature side,
Wherein, the water outlet of each calcined coke water cooling module and each low-pressure coal saver with the water inlet of oxygen-eliminating device by oxygen-eliminating device into
The water outlet of the connection of jellyfish pipe, the oxygen-eliminating device is sequentially connected to low pressure feed water pump, low pressure feed water main pipe, and the low pressure feed water is female
Pipe is connected to the water inlet of each low pressure drum, is supplied water to each low pressure drum；
The steam (vapor) outlet of high pressure drum is connected to the air intake of the high-pressure superheater of corresponding waste heat boiler, the height of each waste heat boiler
The venthole of pressure superheater passes through high steam main pipe and is connected to the main steam ports of steam turbine,
The air intake of the low-pressure superheater of the steam (vapor) outlet and waste heat boiler of low pressure drum is connected to, the low area overheat of each waste heat boiler
The venthole of device passes through low-pressure steam main pipe and is connected to the filling mouth of steam turbine, and the steam turbine is connected with the generator,
The steam turbine drags the electrical power generators,
Wherein, in a set of cogeneration subsystem in office: the discharge port of the can-type calcine furnace and the calcined coke cooling device
Feed inlet connection, the high temperature calcined coke that the can-type calcine furnace comes out exchanges heat cooling in calcined coke cooling device, and described
The exhanst gas outlet of can-type calcine furnace is then connected to the gas inlet of the waste heat boiler, the high temperature cigarette that the can-type calcine furnace comes out
Gas exchanges heat cooling in waste heat boiler,
Low pressure drum is connected to by the first down-comer (101) with the water inlet of calcined coke Vaporizing cooling module, is risen by first
Pipe (102) is connected to the venthole of calcined coke Vaporizing cooling module, forms a low pressure vapor circulation loop, the low pressure drum
It supplies water for calcined coke cooling device, and the steam water interface of generation is separated；
The low pressure drum also passes through the water inlet of the low pressure evaporator (305) of the second down-comer (103) and the waste heat boiler
Connection, is connected to the venthole of low pressure evaporator by the second tedge (104), forms another low pressure vapor circulation loop,
The low pressure drum is low pressure evaporator water supply, and is separated to the steam water interface of generation,
The water outlet of low pressure drum is connected to by high pressure water pump with the water inlet of high-pressure economizer (303), and the high pressure saves coal
The water outlet of device (303) is connected to the water inlet of the high pressure drum, is supplied water for the high pressure drum, and the high pressure drum passes through
Third down-comer (105) is connected to the water inlet of the high pressure evaporator (302) of the waste heat boiler, passes through third tedge
(106) it is connected to the venthole of the high pressure evaporator of the waste heat boiler, forms a high pressure steam/water circulating circuit, the high pressure
Drum is high pressure evaporator water supply, and for separating to the steam water interface that it is generated.
2. the can-type calcine furnace waste heat efficient power generation system according to claim 1 based on piping-main scheme, which is characterized in that also
Including condenser (6), condensate pump (7), condensate pump main water outlet pipe (18),
The steam drain of the steam turbine is sequentially connected to condenser, condensate pump, condensate pump main water outlet pipe along carbonated drink flow direction, institute
Condensate pump main water outlet pipe is stated to be connected to the water inlet of the water inlet of calcined coke water cooling module, low-pressure coal saver respectively.
3. the can-type calcine furnace waste heat efficient power generation system according to claim 1 based on piping-main scheme, which is characterized in that appoint
In a set of cogeneration subsystem, the high-pressure superheater, high pressure evaporator, high-pressure economizer, low-pressure superheater, low pressure evaporation
Device, low-pressure coal saver are sequentially arranged along flue gas flow direction in the waste heat boiler.
4. the can-type calcine furnace waste heat efficient power generation system according to claim 1 based on piping-main scheme, which is characterized in that institute
It states steam turbine and is additionally provided with low-pressure pumping steam mouth, the low-pressure pumping steam mouth is connected to the heating steam inlet of oxygen-eliminating device, is removed to be described
Oxygen device provides deoxygenation vapour.
5. the can-type calcine furnace waste heat efficient power generation system according to claim 1 based on piping-main scheme, which is characterized in that appoint
A set of cogeneration subsystem further includes circulating pump (11), and the circulating pump (11) is set on the first down-comer (101), to drive
Move the low pressure vapor forced circulation between the low pressure drum (10) and the calcined coke Vaporizing cooling module.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112631343A (en) * | 2020-12-23 | 2021-04-09 | 浙江浙能绍兴滨海热电有限责任公司 | Method for controlling water level by parallelly operating multiple deaerators in main pipe system |
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