CN206875995U - Heat power generating system based on coke-oven plant's residual heat and energy integrated utilization - Google Patents

Heat power generating system based on coke-oven plant's residual heat and energy integrated utilization Download PDF

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CN206875995U
CN206875995U CN201720555050.5U CN201720555050U CN206875995U CN 206875995 U CN206875995 U CN 206875995U CN 201720555050 U CN201720555050 U CN 201720555050U CN 206875995 U CN206875995 U CN 206875995U
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coke
gas
dry
steam
heat
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江文豪
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Huatian Engineering and Technology Corp MCC
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Huatian Engineering and Technology Corp MCC
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    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
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Abstract

The utility model provides a kind of heat power generating system based on coke-oven plant's residual heat and energy integrated utilization, including coke oven, coke dry quenching furnace, dry coke quenching residual heat boiler, raw coke oven gas waste-heat recovery device, raw coke oven gas purifying processing device, Coke-oven Gas Boiler, steam turbine and generator, the hot coke of coke oven is sent into coke dry quenching furnace and cooled down, the sensible heat of dry coke quenching residual heat boiler recovery coke dry quenching furnace outlet recyclegas;Raw coke oven gas waste-heat recovery device reclaims the sensible heat of raw coke oven gas;Raw coke oven gas purifying processing device is sent into Coke-oven Gas Boiler after raw coke oven gas is purified;Steam caused by Coke-oven Gas Boiler enters dry coke quenching residual heat boiler after steam turbine high-pressure cylinder does work and carries out reheating, together enter Steam Turbine Through IP Admission with dry coke quenching residual heat boiler high pressure section superheated steam, Steam Turbine Through IP Admission steam discharge together enters turbine low pressure cylinder with dry coke quenching residual heat boiler low pressure stage superheated steam;Steam Turbine Driven electrical power generators.Coke-stove gas, coke sensible heat, crude-gas sensible heat are carried out efficient integrated utilization by the system.

Description

Heat power generating system based on coke-oven plant's residual heat and energy integrated utilization
Technical field
Coking industry heat energy utilization field is the utility model is related to, more particularly to one kind is based on coke-oven plant's residual heat and energy The heat power generating system of integrated utilization.
Background technology
In coke oven production procedure, a variety of complementary energy and residual heat resources be present, including coke-stove gas chemical energy and coke show The high-temperature residual heats such as heat, crude-gas sensible heat.Under the background that energy problem becomes increasingly conspicuous, for the efficient of these residual heat and energy resources Using being current each coke-oven plant or steel plant issues that need special attention.
For coke-stove gas, current main utilization ways are as coke oven conducting self-heating fuel, and pass through gas boiler Generated electricity, also there is part coke-oven plant to produce the chemical products such as methanol, synthesis ammonia using coke-stove gas as industrial chemicals.
For coke sensible heat, mainly reclaimed using Dry Quenching Technology burnt sensible heat red to high temperature, produce steam and use Generated electricity in driving steam turbine.
For high temperature raw coke oven gas, the main flow processing method currently generally used is by caused famine in carbonization chamber retort process Coal gas is pooled to carbonization chamber headroom, enters discharge by tedge, bridge tube, 650~800 DEG C of raw coke oven gas is in bridge tube 85 DEG C or so are cooled to by ammoniacal liquor sprinkling, such a method causes substantial amounts of thermal waste, and due to containing Jiao in raw coke oven gas The Multiple components such as oil, when temperature is less than certain temperature, tar will separate out, and so as to cause to rise blockage, influence coke oven Production.
Coke-stove gas, coke sensible heat, crude-gas sensible heat are divided into each independent system and come in fact by current technology scheme Apply, and do not consider the coupling integration of various residual heat resources.Each independent therrmodynamic system, not only cause system complex even superfluous It is remaining, and the problems such as area of mill site is big, construction costs and gross investment are big, operating cost is high be present.
Utility model content
The utility model is made to solve above-mentioned technical problem present in prior art, and its object is to provide A kind of resource such as coke-stove gas, coke sensible heat, crude-gas sensible heat that can include coke oven region carries out coupling integration, efficiently utilized Heat power generating system based on coke-oven plant's residual heat and energy integrated utilization.
To achieve these goals, the utility model provides a kind of heating power hair based on coke-oven plant's residual heat and energy integrated utilization Electric system, including coke oven, coke dry quenching furnace, dry coke quenching residual heat boiler, raw coke oven gas waste-heat recovery device, raw coke oven gas purifying processing device, Coke-oven Gas Boiler, steam turbine and generator, wherein, the coke discharging mouth of the coke oven is connected with the dress Jiao Kou of the coke dry quenching furnace, Hot coke is cooled down in coke dry quenching furnace by recyclegas caused by the coke oven;The coke dry quenching furnace recyclegas outlet with The gas approach connection of the dry coke quenching residual heat boiler, the exhanst gas outlet of the dry coke quenching residual heat boiler follow with the coke dry quenching furnace Ring gas feed connects, and so as to form a circulation loop, the dry coke quenching residual heat boiler returns to the sensible heat of recyclegas Receive and utilize;The raw coke oven gas outlet of the coke oven connects with the air inlet of the raw coke oven gas waste-heat recovery device, more than the raw coke oven gas Evaporating heating surface is provided with heat reclamation device, reclaims the sensible heat of coke oven high temperature raw coke oven gas;The raw coke oven gas waste heat recovery dress The gas outlet put connects with the air inlet of raw coke oven gas purifying processing device, and the raw coke oven gas purifying processing device is to raw coke oven gas waste heat The raw coke oven gas that retracting device comes is purified and cooled down;The gas outlet of the raw coke oven gas purifying processing device and Coke-oven Gas Boiler Gas inlet connection, by after purification coal gas be sent into Coke-oven Gas Boiler;The raw coke oven gas waste-heat recovery device passes through drum Connected with the dry coke quenching residual heat boiler, steam water interface caused by the raw coke oven gas waste-heat recovery device enters in the drum Dry coke quenching residual heat boiler is sent into after row steam-water separation to be overheated;The steam inlet of the steam turbine respectively with the coke-stove gas The superheated steam outlet of boiler, the superheated steam outlet of dry coke quenching residual heat boiler;The steam turbine connects with the generator Connect, drive the electrical power generators.
Described heat power generating system, wherein, the drum includes low pressure stage drum and high pressure section drum;The dry coke quenching Sectionalized superheater, including the second high pressure section superheater, the first high pressure section superheater, low pressure stage overheat are provided with waste heat boiler Device, the venthole of the low pressure stage drum connect with the air intake of the low pressure stage superheater, and the high pressure section drum goes out vapour Mouth connects with the air intake of the first high pressure section superheater, the venthole and the second high pressure section of the first high pressure section superheater The air intake connection of superheater;The steam turbine includes high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder;The overheat of the Coke-oven Gas Boiler Steam (vapor) outlet connects with the steam inlet of the steam turbine high-pressure cylinder, the steam drain of the steam turbine high-pressure cylinder and the dry coke quenching The air intake connection of second high pressure section superheater of waste heat boiler, the superheated steam outlet of the second high pressure section superheater and institute State the steam inlet connection of Steam Turbine Through IP Admission, the steam drain of the Steam Turbine Through IP Admission and the steam inlet of turbine low pressure cylinder Connection, the venthole of the low pressure stage superheater of the dry coke quenching residual heat boiler also connect with the steam inlet of the turbine low pressure cylinder It is logical.
Described heat power generating system, wherein, the dry coke quenching residual heat boiler also includes high pressure section evaporator, high pressure section saves Coal device, low pressure stage evaporator, low pressure stage economizer, the second high pressure section superheater, the first high pressure section superheater, high pressure section steam Device, high pressure section economizer, low pressure stage superheater, low pressure stage evaporator, low pressure stage economizer are sent out inside waste heat boiler along flue gas Flow is sequentially arranged.
Described heat power generating system, wherein, the heat power generating system also includes condenser, condensate pump, deoxygenation head With the first feed pump, the deoxygenation head is arranged on above the low pressure stage drum, and the low pressure stage drum doubles as deoxygenation water tank;Institute The water inlet of the steam drain of turbine low pressure cylinder and the condenser, condensate pump, low pressure stage economizer, deoxygenation head is stated along carbonated drink Flow sequentially connects;The first of the low pressure stage drum declines the mouth of pipe and passes through down-comer and the water inlet of the low pressure stage evaporator Connection, the venthole of the low pressure stage evaporator are connected by tedge with the first rising mouth of pipe of the low pressure stage drum, shape Into low pressure vapor natural convection loop;First delivery port of the low pressure stage drum by the first feed pump successively with the high pressure The water inlet connection of section economizer, the high pressure section drum;The high pressure section drum is evaporated by down-comer and the high pressure section The water inlet connection of device, the venthole of the high pressure section evaporator are connected by the rising mouth of pipe of tedge and the high pressure section drum It is logical, form high pressure carbonated drink natural convection loop.
Described heat power generating system, wherein, auxiliary heating vapor interface is provided with the deoxygenation head, is aided in the external world Vapour source connects, the startup steam as a whole set of heat power generating system or the standby vapour when dry coke quenching residual heat boiler goes wrong Source.
Described heat power generating system, wherein, the heat power generating system also includes circulating pump, the low pressure stage drum Water inlet of the second decline mouth of pipe successively with the circulating pump, raw coke oven gas waste-heat recovery device connects, and the raw coke oven gas waste heat returns The venthole of receiving apparatus connects with the second rising mouth of pipe of the low pressure stage drum, forms a low pressure vapor forced circulation and returns Road.
Described heat power generating system, wherein, the heat power generating system also includes the second feed pump and high-pressure feed water adds Hot device, wherein, the second delivery port of the low pressure stage drum passes through the water inlet of the second feed pump and the high-pressure feed-water heater Mouth connection, the delivery port of the high-pressure feed-water heater connect with the feed-water inlet of the Coke-oven Gas Boiler.
Described heat power generating system, wherein, regenerative steam mouth is provided with the Steam Turbine Through IP Admission, the backheat is taken out Steam ports connects with the heating steam inlet of the high-pressure feed-water heater.
Described heat power generating system, wherein, in addition to disposable dust remover, secondary filter and circulating fan, described one Secondary deduster connection exports the gas approach with the dry coke quenching residual heat boiler in the recyclegas of the coke dry quenching furnace, described secondary One end of deduster and connected with the exhanst gas outlet of the dry coke quenching residual heat boiler, the other end of the secondary filter and circulation The air inlet connection of blower fan, the exhaust outlet of the circulating fan and the recyclegas inlet communication of the coke dry quenching furnace.
Described heat power generating system, wherein, in addition to gas chamber, the gas chamber be arranged at the raw coke oven gas purification Manage on the gaspipe line between device and the gas boiler, gas exit and the coal of the raw coke oven gas purifying processing device The gas inlet connection of gas holder, the gas exit of the gas chamber connect with the gas inlet of the Coke-oven Gas Boiler.
The beneficial effects of the utility model are:
1) a kind of heat power generating system efficiently integrated based on coke-stove gas and dry coke quenching UTILIZATION OF VESIDUAL HEAT IN is constructed, is optimized Conventional coke-stove gas generating, dry coke quenching cogeneration, waste heat of coke oven crude gas recovery system and the pattern deposited, eliminate at least one Turbo-generator Set and supporting auxiliary equipment are covered, project occupation of land area and construction totle drilling cost are greatly reduced;
2) to coke-stove gas generating set, dry coke quenching UTILIZATION OF VESIDUAL HEAT IN unit, pipe raw coke oven gas residual neat recovering system steam system System and water supply system carry out height coupling integration, and unit is enormously simplify under conditions of unit entirety heat-economy is not influenceed and is returned Hot systems, equivalent to the low pressure heat regenerative system for eliminating a set of conventional coke-stove gas generating set and being separately configured so that overall thermal Force system is more succinct, and project occupation of land area and construction totle drilling cost are greatly reduced;
3) high temperature overheater of dry coke quenching residual heat boiler is divided into the second high pressure section superheater and the first high pressure section overheats Device, the second high pressure section superheater is also served as to the reheater of steam turbine high-pressure cylinder steam discharge, the coke-stove gas being independently arranged with routine Boiler is compared with dry coke quenching residual heat boiler therrmodynamic system, does not set up any heat-transfer surface, is but realized the reheating of steam, is not only carried The high overall thermal efficiency of system, and the mass dryness fraction of last stage vane of steam turbine is improved, improve turbine low pressure cylinder final stage leaf The condition of work of piece, improve the safety in operation and stability of steam turbine;
4) therrmodynamic system of the present utility model is equal based on the optimization design under the second law of thermodynamics, a whole set of heat-exchange system Matched according to the quality of flue gas thermal source and the grade of heat transferring medium (carbonated drink) height, high temperature heat source is used to heat high-grade vapour Water, low-temperature heat source are used to heat low-grade carbonated drink, the utilization of heat energy are not only ensure that from " amount ", the whole series are ensure that from " matter " The synthesis heat transfer effect of system.
Brief description of the drawings
By reference to detailed description below content and with reference to accompanying drawing, other purposes and result of the present utility model It will be more apparent and should be readily appreciated that.In the accompanying drawings:
Fig. 1 is the composition block diagram of heat power generating system of the utility model based on coke-oven plant's residual heat and energy integrated utilization;
Fig. 2 is one of heat power generating system of the utility model based on coke-oven plant's residual heat and energy integrated utilization and is preferable to carry out The schematic diagram of example.
In the accompanying drawings, identical reference indicates similar or corresponding feature or function.
Embodiment
In the following description, for purposes of illustration, in order to provide the comprehensive understanding to one or more embodiments, explain Many details are stated.It may be evident, however, that these embodiments can also be realized in the case of these no details.
Below with reference to accompanying drawings come to being described in detail according to each embodiment of the present utility model.
Fig. 1 is the composition block diagram of heat power generating system of the utility model based on coke-oven plant's residual heat and energy integrated utilization, such as Shown in Fig. 1, the heat power generating system includes coke oven 1, coke dry quenching furnace 2, dry coke quenching residual heat boiler 4, raw coke oven gas waste-heat recovery device 7th, raw coke oven gas purifying processing device 8, Coke-oven Gas Boiler 10, steam turbine 11 and generator 12, wherein:
The coke discharging mouth of the coke oven 1 is connected with the dress Jiao Kou of the coke dry quenching furnace 2, and hot coke caused by the coke oven 1 is dry Put out in stove 2 and cooled down by recyclegas;
The recyclegas outlet of the coke dry quenching furnace 2 connects with the gas approach of the dry coke quenching residual heat boiler 4, described dry to put out The exhanst gas outlet of coke waste heat boiler 4 and the recyclegas inlet communication of the coke dry quenching furnace 2, so as to form a circulation loop, institute Dry coke quenching residual heat boiler 4 is stated to recycle the sensible heat of recyclegas;
The raw coke oven gas outlet of the coke oven 1 connects with the air inlet of the raw coke oven gas waste-heat recovery device 7, the raw coke oven gas Evaporating heating surface is provided with waste-heat recovery device 7, reclaims the sensible heat of coke oven high temperature raw coke oven gas;
The gas outlet of the raw coke oven gas waste-heat recovery device 7 connects with the air inlet of raw coke oven gas purifying processing device 8, described The raw coke oven gas that raw coke oven gas purifying processing device 8 comes to raw coke oven gas waste-heat recovery device is purified and cooled down;
The gas outlet of the raw coke oven gas purifying processing device 8 connects with the gas inlet of Coke-oven Gas Boiler 10, will purify Coal gas afterwards is sent into Coke-oven Gas Boiler 10;
The raw coke oven gas waste-heat recovery device 7 is connected by drum with the dry coke quenching residual heat boiler 4, more than the raw coke oven gas Feeding dry coke quenching residual heat boiler 4 is carried out after steam water interface caused by heat reclamation device 7 carries out steam-water separation in the drum Overheat;
The steam inlet of the steam turbine 11 exports, more than dry coke quenching with the superheated steam of the Coke-oven Gas Boiler 10 respectively The superheated steam outlet of heat boiler 4;
The steam turbine 11 is connected with the generator 12, drives the generator 12 to generate electricity.
The technological process of above-mentioned heat power generating system is as follows:
The hot coke of coke oven 1 is cooled down by the recyclegas of coke dry quenching furnace 2, the high temperature circulation gas that coke dry quenching furnace 2 comes out Heat exchange is carried out into dry coke quenching residual heat boiler 4, the low-temperature circulating gas discharged after the absorbing and cooling temperature of dry coke quenching residual heat boiler 4 is sent back to To coke dry quenching furnace 2, continue on for cooling down the hot coke in coke dry quenching furnace 2, so as to form the cyclic process of the cooling gas of coke dry quenching furnace 2;
Raw coke oven gas caused by coke oven 1 by raw coke oven gas waste-heat recovery device 7 reclaim after by raw coke oven gas purifying processing device 8 Feeding of evolving Coke-oven Gas Boiler 10 is burnt, the main fuel as Coke-oven Gas Boiler 10;
Superheated steam caused by Coke-oven Gas Boiler 10 enters steam turbine 11 as main steam, and dry coke quenching residual heat boiler 4 produces Raw superheated steam enters steam turbine 11 as first order filling, and steam caused by raw coke oven gas waste-heat recovery device 7 passes through drum Feeding dry coke quenching residual heat boiler 4 is overheated after carrying out steam-water separation, is then sent into steam turbine 11 as second level filling, is improved The generated output of steam turbine 11, realizes the efficient utilization of steam resource, and steam turbine 11 drives generator 12 rotary electrification.
Above-mentioned heat power generating system can will include the resources such as coke-stove gas, coke sensible heat, crude-gas sensible heat and carry out coupling collection Into optimizing heat power generating system, necessarily lead to more considerable economic well-being of workers and staff, there is important Practical significance.
In one alternate embodiment, in the above-mentioned heat power generating system based on coke-oven plant's residual heat and energy integrated utilization:
Drum includes low pressure stage drum 16 and high pressure section drum 18;
It is provided with sectionalized superheater in the dry coke quenching residual heat boiler 10, including the second high pressure section superheater 401, first is high Press section superheater 402, low pressure stage superheater 405, the venthole of the low pressure stage drum 16 and the low pressure stage superheater 405 Air intake connects, and the venthole of the high pressure section drum 18 is connected with the air intake of the first high pressure section superheater 402, described The venthole of first high pressure section superheater 402 connects with the air intake of the second high pressure section superheater 401;
The steam turbine 11 includes high pressure cylinder 1101, intermediate pressure cylinder 1102 and low pressure (LP) cylinder;
The superheated steam outlet of the Coke-oven Gas Boiler 10 connects with the steam inlet of the steam turbine high-pressure cylinder 1101, The steam drain of the steam turbine high-pressure cylinder 1101 enters vapour with the second high pressure section superheater 401 of the dry coke quenching residual heat boiler 4 Mouth connection, the superheated steam outlet of the second high pressure section superheater 401 and the steam inlet of the Steam Turbine Through IP Admission 1102 Connection, the steam drain of the Steam Turbine Through IP Admission 1102 connect with the steam inlet of turbine low pressure cylinder 1103, the dry coke quenching Steam inlet of the venthole of the low pressure stage superheater 405 of waste heat boiler 4 also with the turbine low pressure cylinder 1103 connects.
The high temperature overheater of dry coke quenching residual heat boiler is divided into two-stage in above-mentioned heat power generating system, by dry coke quenching waste heat Second high pressure section superheater 401 of boiler also serves as Coke-oven Gas Boiler 10 and produces the reheating after steam does work in high pressure cylinder 1101 Device, compared with the Coke-oven Gas Boiler being independently arranged of routine and dry coke quenching residual heat boiler therrmodynamic system, any change is not set up Hot face, the reheating of steam is but realized, not only increase the overall thermal efficiency of a whole set of electricity generation system, and improve steam turbine end The mass dryness fraction of grade blade, improve the condition of work of turbine low pressure cylinder exhaust stage blade, improve steam turbine safety in operation and Stability.
In one alternate embodiment, in addition to disposable dust remover 3, secondary filter 5 and circulating fan 6, it is described once Deduster 3 connect the coke dry quenching furnace 2 recyclegas outlet and the dry coke quenching residual heat boiler 4 gas approach, described two One end of secondary deduster 5 and connected with the exhanst gas outlet of the dry coke quenching residual heat boiler 4, the other end of the secondary filter 5 Connected with the air inlet of circulating fan 6, the exhaust outlet of the circulating fan 6 and the recyclegas inlet communication of the coke dry quenching furnace 2.
In an alternative embodiment of the present utility model, in addition to gas chamber 9, the gas chamber 9 are arranged on the famine On gaspipe line between gas purification processing unit 8 and the gas boiler 10, the coal of the raw coke oven gas purifying processing device 8 Gas outlet connects with the gas inlet of the gas chamber 9, the gas exit of the gas chamber 9 and the Coke-oven Gas Boiler 10 Gas inlet connects.
Fig. 2 shows one of heat power generating system of the utility model based on coke-oven plant's residual heat and energy integrated utilization preferably Embodiment, as shown in Fig. 2 the heat power generating system includes:Coke oven 1, coke dry quenching furnace 2, disposable dust remover 3, dry coke quenching waste heat pot Stove 4, secondary filter 5, circulating fan 6, raw coke oven gas waste-heat recovery device 7, gas purification processing unit 8, gas chamber 9, coke oven Gas boiler 10, steam turbine 11, generator 12, condenser 13, condensate pump 14, deoxygenation are first 15, low pressure stage drum 16, first give Water pump 17, high pressure section drum 18, the second feed pump 19, high-pressure feed-water heater 20 and circulating pump 21, wherein,
The high temperature circulation gas vent of the coke dry quenching furnace 2 is entered by disposable dust remover 3 and the dry coke quenching residual heat boiler 4 Gas port is connected, and the exhaust outlet of the dry coke quenching residual heat boiler 4 passes through secondary filter 5, circulating fan 6 and the low temperature of coke dry quenching furnace 2 Recyclegas import is connected, so as to form the cyclic process of coke dry quenching furnace cooling gas;
The raw coke oven gas waste-heat recovery device 7 is coke oven coke oven uprising tube raw coke oven gas waste-heat recovery device, successively with gas purification Processing unit 8, coke-oven coal gas holder 9 are connected, and the coke-oven coal gas holder 9 passes through gas piping and the coal of the Coke-oven Gas Boiler 10 Gas import is connected;
The Coke-oven Gas Boiler 10 is provided with multistage heating surface along flue gas flow, including at least gas boiler superheater 101 and gas boiler economizer 102;
The dry coke quenching residual heat boiler 4 is internally provided with multistage heating surface, including at least what is be sequentially arranged along flue gas flow Second high pressure section superheater 401, the first high pressure section superheater 402, high pressure section evaporator 403, high pressure section economizer 404, low pressure Section superheater 405, low pressure stage evaporator 406 and low pressure stage economizer 407;
The steam turbine 11 divides for high pressure cylinder 1101, intermediate pressure cylinder 1102 and low pressure (LP) cylinder 1103;
The steam inlet of the venthole of the Coke-oven Gas Boiler superheater 101 and the steam turbine high-pressure cylinder 1101 connects Logical, the steam drain of the steam turbine high-pressure cylinder 1101 enters with the second high pressure section superheater 401 of the dry coke quenching residual heat boiler 4 Steam ports connects, the venthole of the first high pressure section superheater 402 of the dry coke quenching residual heat boiler 4 also with the second high pressure section mistake The air intake connection of hot device 401, the second high pressure section superheater 401 of the dry coke quenching residual heat boiler are both used as dry coke quenching waste heat pot The second level superheater of the high pressure section steam of stove 4, the again reheater as the steam discharge of steam turbine high-pressure cylinder 1101;
In the superheated steam outlet of second high pressure section superheater 401 of the dry coke quenching residual heat boiler 4 and the steam turbine The steam inlet connection of cylinder pressure 1102, the steaming of the steam drain of the Steam Turbine Through IP Admission 1102 and the turbine low pressure cylinder 1103 Vapor inlet connects, the venthole of the low pressure stage superheater 405 of the dry coke quenching residual heat boiler also with the turbine low pressure cylinder 1103 steam inlet is connected, and regenerative steam mouth, the regenerative steam mouth and institute are provided with the Steam Turbine Through IP Admission 1102 State the heating steam inlet connection of high-pressure feed-water heater 20;
The steam drain of the turbine low pressure cylinder 1103 and the condenser 13, the condensate pump 14, the dry coke quenching Low pressure stage economizer 407 in waste heat boiler 4, the water inlet of deoxygenation first 15 sequentially connect along carbonated drink flow, the deoxygenation first 15 It is arranged on the top of low pressure stage drum 16;
There is the low pressure stage drum 16 first delivery port 16-1, the second delivery port 16-2, first to decline mouth of pipe 16-3, the Two decline mouth of pipe 16-4, the first rising mouth of pipe 16-5 and second rises mouth of pipe 16-6, wherein:
First delivery port 16-1 of the low pressure stage drum 16 saves coal with the high pressure section successively by the first feed pump 17 The water inlet connection of device 404, the high pressure section drum 18;
Second delivery port 16-2 of the low pressure stage drum 16 passes through the second feed pump 19 and the high-pressure feed-water heater 20 water inlet connection, the feed-water inlet of the delivery port of the high-pressure feed-water heater 20 and the Coke-oven Gas Boiler 10 connect It is logical;
First decline mouth of pipe 16-3 entering by down-comer and the low pressure stage evaporator 406 of the low pressure stage drum 16 The mouth of a river connects, and the venthole of the low pressure stage evaporator 406 passes through tedge and the first tedge of the low pressure stage drum 16 Mouth 16-5 connections, form low pressure vapor natural convection loop;
The second of the low pressure stage drum 16 declines mouth of pipe 16-4 and filled successively with the circulating pump 21, raw coke oven gas waste heat recovery Put 7 water inlet connection, the second tedge of the venthole of the raw coke oven gas waste-heat recovery device 7 and the low pressure stage drum 16 Mouth 16-6 connections, form a low pressure vapor forced circulation loop.
Above-mentioned heat power generating system, to coke-stove gas generating set, dry coke quenching UTILIZATION OF VESIDUAL HEAT IN unit, raw coke oven gas waste heat recovery Vapour system, water supply system and the deaerating type of cycles of system carry out height coupling integration, are not influenceing unit entirety heat-economy Under the conditions of enormously simplify unit heat regenerative system, equivalent to eliminate a set of conventional coke-stove gas generating set be separately configured it is low Push back hot systems and deaerating type of cycles so that overall therrmodynamic system is more succinct, and project occupation of land area and construction totle drilling cost are significantly Reduce.In addition, coke oven coke oven uprising tube raw coke oven gas residual neat recovering system is designed into the low force circulatory system, can improve on coke oven The heat exchange efficiency of riser raw coke oven gas residual neat recovering system, and can ensure the security reliability of heat exchanger operation.Furthermore by coke oven Low-pressure saturated steam caused by riser raw coke oven gas residual neat recovering system converges with low-pressure saturated steam caused by dry coke quenching residual heat boiler The General Logistics Department is together middle to be overheated into low pressure stage superheater, is then entered vapour as turbine low pressure cylinder, is further increased vapour The generated output of turbine, realize the efficient utilization of steam resource.
The technological process of heat power generating system shown in Fig. 2 is as follows:
The hot coke released from the carbonizing chamber of coke oven 1 is sent into coke dry quenching furnace 2, is cooled down by recyclegas, coke dry quenching furnace 2 goes out The high temperature circulation gas (for example, 900 DEG C or so) come is after disposable dust remover 3 separates coarse granule coke powder, more than dry coke quenching Heat boiler 4 carries out heat exchange, and thermal source is provided for dry coke quenching residual heat boiler 4;Discharged after the absorbing and cooling temperature of dry coke quenching residual heat boiler 4 low Warm recyclegas (for example, 150 DEG C or so) passes through circulating fan 6 after the further separate fine particles coke powder of secondary filter 5 Pressurization, which is then returned to, to the bottom air inlet mouth of coke dry quenching furnace 2, to be continued on for cooling down the hot coke in coke dry quenching furnace 2, and it is cold to form a circulation But process;
Raw coke oven gas above coke oven 1 out enters raw coke oven gas waste-heat recovery device 7, by raw gas temperature from 800 DEG C of left sides The right side is reduced to 500 DEG C or so, subsequently into gas purification processing unit 8, in gas purification processing unit through supercooling and purification Coke-stove gas is cached into coke-oven coal gas holder 9, and the coke-stove gas come out from coke-oven coal gas holder 9 is sent into Coke-oven Gas Boiler 10 Burnt, the main fuel as Coke-oven Gas Boiler 10;
Superheated steam caused by Coke-oven Gas Boiler 10 enters steam turbine high-pressure cylinder 1101, turbine high-pressure as main steam The steam that cylinder 1101 is discharged merges latter same with the outlet vapor of the first high pressure section superheater 402 in dry coke quenching residual heat boiler 4 Reheating is carried out into the second high pressure section superheater 401;The outlet vapor of second high pressure section superheater 401 enters Steam Turbine Through IP Admission 1102, the outlet vapor with the low pressure stage superheater 405 in dry coke quenching residual heat boiler after Steam Turbine Through IP Admission acting decompression closes And then the low pressure admission together as steam turbine 11 enters turbine low pressure cylinder 1103;The steam discharge of turbine low pressure cylinder 1103 Into condenser 13, condensate is condensed into condenser 13;
Condensate in condenser 13 delivers to dry coke quenching residual heat boiler low pressure stage economizer 407 by the pressurization of condensate pump 14 Deoxygenation first 15 to be sent into after being preheated and carries out deoxygenation, the water after deoxygenation falls into the low pressure stage drum 16 being arranged on below deoxygenation head, Low pressure stage drum 16 doubles as deoxygenation water tank;Pass through down-comer and tedge between low pressure stage drum 16 and low pressure stage evaporator 406 Natural Circulation process is formed, steam water interface caused by low pressure stage evaporator 406 carries out steam-water separation in low pressure stage drum 16, Caused saturated vapor enters deoxygenation first 15, carries out thermal de-aeration to the condensate of low pressure stage economizer 407, is formed from deoxygenation Pattern;
The saturated vapor separated of low pressure stage drum 16, removes the part that deoxygenation autophage falls, and residual steam is entered Enter low pressure stage superheater 405 to be overheated, then merge with the steam discharge of Steam Turbine Through IP Admission 1102 latter low with steam turbine is entered Cylinder pressure 1103;
First delivery port 16-1 of low pressure stage drum 16 delivers to dry coke quenching waste heat successively after being pressurizeed by the first feed pump 17 Boiler High Pressure section economizer 404 and high pressure section drum 18, pass through down-comer between high pressure section drum 18 and high pressure section evaporator 403 Natural Circulation process is formed with tedge, steam water interface caused by high pressure section evaporator 403 is carried out in high pressure section drum 18 Steam-water separation, caused saturated vapor sequentially enters the first high pressure section superheater 402 and the second high pressure section superheater 401 carries out two Level overheat;
Second delivery port 16-2 of low pressure stage drum 16 delivers to high-pressure feed-water heater after being pressurizeed by the second feed pump 19 20, enter Coke-oven Gas Boiler 10 as feedwater after being heated in high-pressure feed-water heater 20
Water is delivered to raw coke oven gas waste-heat recovery device 7 by low pressure stage drum 16 by circulating pump 21, for absorbing raw coke oven gas Sensible heat, low pressure stage drum 16 is back to as steam water interface after vaporization in raw coke oven gas waste-heat recovery device 7, forms one The individual forced circulation Vaporizing cooling process to high temperature raw coke oven gas in tedge;
Steam turbine 11 is coaxially connected with generator 12, drives generator rotary electrification.
The above-mentioned heat power generating system high based on waste heat of coke oven complementary energy, optimize conventional coal gas generating, dry coke quenching waste heat hair Electricity and coke oven coke oven uprising tube raw coke oven gas residual neat recovering system and the pattern deposited, not only eliminate a set of Turbo-generator Set, and To the steam system of coke-stove gas generating set, dry coke quenching UTILIZATION OF VESIDUAL HEAT IN unit and coke oven coke oven uprising tube raw coke oven gas residual neat recovering system System, water supply system and deaerating type of cycles carry out height coupling, enormously simplify unit heat regenerative system, equivalent to eliminating a set of routine The low-pressure heater and oxygen-eliminating device that gas-driven generator group is separately configured so that system is more succinct, project occupation of land area and construction Totle drilling cost is greatly reduced;In addition, the high pressure section superheater of dry coke quenching residual heat boiler is divided into two-stage, by dry coke quenching residual heat boiler Finishing superheater also serve as the reheater that Coke-oven Gas Boiler produces steam, not only increase the overall thermal efficiency of electricity generation system, And the mass dryness fraction of last stage vane of steam turbine is improved, the condition of work of turbine low pressure cylinder exhaust stage blade is improved, improves vapour The safety in operation and stability of turbine;Furthermore coke oven coke oven uprising tube raw coke oven gas residual neat recovering system is designed to that low force is followed Loop system, can improve the heat exchange efficiency of coke oven coke oven uprising tube raw coke oven gas residual neat recovering system, and and can ensures raw coke oven gas waste heat recovery The security reliability of system operation.
Although content disclosed above shows exemplary embodiment of the present utility model, it should be noted that not carrying on the back On the premise of the scope limited from claim, it may be many modifications and change.In addition, although element of the present utility model It can describe or require in the form of individual, be unless explicitly limited individual element it is also contemplated that having multiple elements.

Claims (10)

1. a kind of heat power generating system based on coke-oven plant's residual heat and energy integrated utilization, it is characterised in that including coke oven, dry put out Stove, dry coke quenching residual heat boiler, raw coke oven gas waste-heat recovery device, raw coke oven gas purifying processing device, Coke-oven Gas Boiler, steam turbine with And generator, wherein,
The coke discharging mouth of the coke oven is connected with the dress Jiao Kou of the coke dry quenching furnace, and hot coke caused by the coke oven leads in coke dry quenching furnace Recyclegas is crossed to be cooled down;
The recyclegas outlet of the coke dry quenching furnace connects with the gas approach of the dry coke quenching residual heat boiler, the dry coke quenching waste heat The exhanst gas outlet of boiler and the recyclegas inlet communication of the coke dry quenching furnace, so as to form a circulation loop, the dry coke quenching Waste heat boiler recycles to the sensible heat of recyclegas;
The raw coke oven gas outlet of the coke oven connects with the air inlet of the raw coke oven gas waste-heat recovery device, and the raw coke oven gas waste heat returns Evaporating heating surface is provided with receiving apparatus, reclaims the sensible heat of coke oven high temperature raw coke oven gas;
The gas outlet of the raw coke oven gas waste-heat recovery device connects with the air inlet of raw coke oven gas purifying processing device, the raw coke oven gas The raw coke oven gas that purifying processing device comes to raw coke oven gas waste-heat recovery device is purified and cooled down;
The gas outlet of the raw coke oven gas purifying processing device connects with the gas inlet of Coke-oven Gas Boiler, by the coal gas after purification It is sent into Coke-oven Gas Boiler;
The raw coke oven gas waste-heat recovery device is connected by drum with the dry coke quenching residual heat boiler, the raw coke oven gas waste heat recovery Feeding dry coke quenching residual heat boiler is overheated after steam water interface caused by device carries out steam-water separation in the drum;
The steam inlet of the steam turbine respectively with the superheated steam of Coke-oven Gas Boiler outlet, dry coke quenching residual heat boiler Superheated steam outlet;
The steam turbine is connected with the generator, drives the electrical power generators.
2. heat power generating system according to claim 1, it is characterised in that the drum includes low pressure stage drum and high pressure Section drum;Sectionalized superheater, including the second high pressure section superheater, the first high pressure section mistake are provided with the dry coke quenching residual heat boiler Hot device, low pressure stage superheater, the venthole of the low pressure stage drum connect with the air intake of the low pressure stage superheater, the height The venthole of pressure section drum connects with the air intake of the first high pressure section superheater, and the first high pressure section superheater goes out vapour Mouth connects with the air intake of the second high pressure section superheater;The steam turbine includes high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder;The coke oven The superheated steam outlet of gas boiler connects with the steam inlet of the steam turbine high-pressure cylinder, the steam discharge of the steam turbine high-pressure cylinder Mouth connects with the air intake of the second high pressure section superheater of the dry coke quenching residual heat boiler, the mistake of the second high pressure section superheater Vapours outlet connects with the steam inlet of the Steam Turbine Through IP Admission, and the steam drain of the Steam Turbine Through IP Admission is low with steam turbine The steam inlet connection of cylinder pressure, the venthole of the low pressure stage superheater of the dry coke quenching residual heat boiler also with the steam turbine low-pressure The steam inlet connection of cylinder.
3. heat power generating system according to claim 2, it is characterised in that the dry coke quenching residual heat boiler also includes high pressure Section evaporator, high pressure section economizer, low pressure stage evaporator, low pressure stage economizer, the second high pressure section superheater, the first high pressure Section superheater, high pressure section evaporator, high pressure section economizer, low pressure stage superheater, low pressure stage evaporator, low pressure stage economizer are remaining Sequentially arranged along flue gas flow inside heat boiler.
4. heat power generating system according to claim 3, it is characterised in that the heat power generating system also includes condensing Device, condensate pump, deoxygenation head and the first feed pump, wherein,
The deoxygenation head is arranged on above the low pressure stage drum, and the low pressure stage drum doubles as deoxygenation water tank;
The steam drain of the turbine low pressure cylinder and the condenser, condensate pump, low pressure stage economizer, the water inlet of deoxygenation head Sequentially connected along carbonated drink flow;
The first decline mouth of pipe of the low pressure stage drum is connected by down-comer with the water inlet of the low pressure stage evaporator, described The venthole of low pressure stage evaporator is connected by tedge with the first rising mouth of pipe of the low pressure stage drum, forms low pressure vapor Natural convection loop;
First delivery port of the low pressure stage drum by the first feed pump successively with the high pressure section economizer, the high pressure section The water inlet connection of drum;
The high pressure section drum is connected by down-comer with the water inlet of the high pressure section evaporator, the high pressure section evaporator Venthole is connected by tedge with the rising mouth of pipe of the high pressure section drum, forms high pressure carbonated drink natural convection loop.
5. heat power generating system according to claim 4, it is characterised in that auxiliary heating is provided with the deoxygenation head and is steamed Vapour interface, connected with extraneous auxiliary steam source, as a whole set of heat power generating system startup steam or work as dry coke quenching residual heat boiler Standby steam source when going wrong.
6. heat power generating system according to claim 2, it is characterised in that the heat power generating system also includes circulation Pump, the second of the low pressure stage drum, which declines water inlet of the mouth of pipe successively with the circulating pump, raw coke oven gas waste-heat recovery device, connects Logical, the venthole of the raw coke oven gas waste-heat recovery device connects with the second rising mouth of pipe of the low pressure stage drum, forms one Low pressure vapor forced circulation loop.
7. heat power generating system according to claim 2, it is characterised in that the heat power generating system is also given including second Water pump and high-pressure feed-water heater, wherein, the second delivery port of the low pressure stage drum passes through the second feed pump and the high pressure The water inlet connection of feed-water heater, the feed-water inlet of the delivery port of the high-pressure feed-water heater and the Coke-oven Gas Boiler Connection.
8. heat power generating system according to claim 7, it is characterised in that be provided with backheat in the Steam Turbine Through IP Admission Extraction opening, the regenerative steam mouth connect with the heating steam inlet of the high-pressure feed-water heater.
9. heat power generating system according to claim 1, it is characterised in that also including disposable dust remover, secondary filter And circulating fan, the disposable dust remover connection is in the recyclegas outlet of the coke dry quenching furnace and the dry coke quenching residual heat boiler Gas approach, one end of the secondary filter and is connected with the exhanst gas outlet of the dry coke quenching residual heat boiler, described secondary to remove The other end of dirt device connects with the air inlet of circulating fan, the exhaust outlet of the circulating fan and the recyclegas of the coke dry quenching furnace Inlet communication.
10. heat power generating system according to claim 1, it is characterised in that also set including gas chamber, the gas chamber On gaspipe line between the raw coke oven gas purifying processing device and the gas boiler, the raw coke oven gas purifying processing device Gas exit connected with the gas inlet of the gas chamber, the gas exit of the gas chamber and the Coke-oven Gas Boiler Gas inlet connects.
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CN108397248A (en) * 2018-01-31 2018-08-14 中冶华天南京工程技术有限公司 The gas generating system and method promoted based on steam parameter
CN108413379A (en) * 2018-01-31 2018-08-17 中冶华天工程技术有限公司 It is a kind of that system is utilized based on the industrial coal gas synergy dragged
CN108487953A (en) * 2018-01-31 2018-09-04 中冶华天南京工程技术有限公司 A kind of coal gas synergy utilizes system
CN108487954A (en) * 2018-01-31 2018-09-04 中冶华天工程技术有限公司 A kind of coal gas synergy electricity generation system based on industry dragging
CN108487955A (en) * 2018-01-31 2018-09-04 中冶华天南京工程技术有限公司 System and method is utilized based on the coal gas synergy that steam parameter is promoted

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108397248A (en) * 2018-01-31 2018-08-14 中冶华天南京工程技术有限公司 The gas generating system and method promoted based on steam parameter
CN108413379A (en) * 2018-01-31 2018-08-17 中冶华天工程技术有限公司 It is a kind of that system is utilized based on the industrial coal gas synergy dragged
CN108487953A (en) * 2018-01-31 2018-09-04 中冶华天南京工程技术有限公司 A kind of coal gas synergy utilizes system
CN108487954A (en) * 2018-01-31 2018-09-04 中冶华天工程技术有限公司 A kind of coal gas synergy electricity generation system based on industry dragging
CN108487955A (en) * 2018-01-31 2018-09-04 中冶华天南京工程技术有限公司 System and method is utilized based on the coal gas synergy that steam parameter is promoted
CN108413379B (en) * 2018-01-31 2019-12-03 中冶华天工程技术有限公司 It is a kind of that system is utilized based on the industrial coal gas synergy dragged
CN108487954B (en) * 2018-01-31 2020-01-10 中冶华天工程技术有限公司 Coal gas synergistic power generation system based on industrial dragging
CN108487953B (en) * 2018-01-31 2020-01-10 中冶华天南京工程技术有限公司 Coal gas synergistic utilization system

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