CN106224972B - The refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas recycles - Google Patents

The refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas recycles Download PDF

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CN106224972B
CN106224972B CN201610801204.4A CN201610801204A CN106224972B CN 106224972 B CN106224972 B CN 106224972B CN 201610801204 A CN201610801204 A CN 201610801204A CN 106224972 B CN106224972 B CN 106224972B
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gas
air
water
gasification
incinerator
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CN106224972A (en
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徐�明
林顺洪
李长江
胡桂川
柏继松
杨鲁
田野
吕全伟
李玉
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/12Heat utilisation in combustion or incineration of waste

Abstract

The refuse gasification combustion gas recycled the invention discloses a kind of high-moisture gas and steam turbine combined generating system, including refuse gasification system, steam generator system, electricity generation system, electricity generation system includes blender, air compressor, synthesize flue gas compressor, synthesize smoke combustion room, turbine a, turbine b, steam turbine, generator a, generator b, waste heat boiler, turbine a gas outlet parallel synthesis gas vapour gas heat exchanger, the heating passage of air vapour gas heat exchanger, reconnect the air inlet of recirculation blower, the Waste gas outlet of waste heat boiler is sequentially connected recirculation blower, mixer/separator, low-pressure air compressor, the heated passage of air-water heat exchanger is connected between pressure-air compressor.The refuse gasification combustion gas recycled using this high-moisture gas and steam turbine combined generating system, large-scale rubbish continuous gasification processing, garbage treatment quantity is bigger, and the organic efficiency of heat is high, can efficiently reduce pollutant emission and CO2 discharges.

Description

The refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas recycles
Technical field
The invention belongs to solid waste incineration Treatment and recovery processing technology field, more particularly to a kind of high-moisture gas The refuse gasification combustion gas of recycling and steam turbine combined generating system.
Background technology
Existing technology of garbage disposal mainly has burning, sanitary landfills, compost, waste recovery etc..It is conventional in garbage disposal In technology, burning disposal has that reduced training is obvious, it is innoxious thoroughly, occupation of land amount is small, and waste heat energy is utilized, and secondary pollution is few The advantages that, meet the strategic requirement of China's sustainable development.But with the continuous improvement to environmental requirement both at home and abroad, how to strengthen Control to secondary pollution is particularly important.Therefore, refuse pyrolysis gasification burning technology is gradually shifted onto the road of industrial applications On, especially for domestic rubbish primarily now using all kinds of incineration technologies, gasification burning technology widely industrialize by The technological innovation of domestic garbage disposal industry is brought to regenerate.
For many years, scientific research of the China to the gasification burning technology such as biomass, rubbish, be in progress a lot of, the base in laboratory Plinth research is a lot, also has application study, such as:Rotary kiln type, vertical and fluidized bed type destructive gasifying or temperature gasification and high melting skill Art etc..But Technique Popularizing is applied upper or a definite limitation be present, raw material type, garbage treatment quantity, secondary pollution control and economy Benefit etc. is principal element.
In existing burning process and equipment, fire grate type incinerator is various informative, and its application accounts for whole world waste incineration More than the 80% of the total market size, mechanical backstepping fire grate, forwards fire grate or combined fire grate are used in body of heater wherein having, is also adopted With fire grates such as chain-plate type and drum-types.In boiler plant, boiler recovery heat methods are a lot of, technology maturation;Thermal source kind Class is also more, such as:The thermals source such as solar energy, smelting furnace waste heat, coal furnace, fluid bed, fixed bed, rotary kiln, heat is reclaimed using boiler Amount, for generating electricity, heat supply, heating etc..
In summary, typical gasification burning and boiler plant technology maturation, respectively there is its own advantage, but it is actual in China Need to solve the problems, such as in and deficiency:
1. for characteristics such as China's house refuse water content height, complicated components, the technology of moving hearth uses, to rubbish Conveying capacity needs emphasis to consider.Fly ash content is higher in flue gas burn simultaneously after, and collecting ash is heavier, deashing repair and maintenance Cycle is short.
2. with being on the increase for refuse production, sanitary fill such as mountain, garbage treatment quantity must be effectively improved, It can just meet the market requirement.
3. in face of strict pollutant emission requirement, secondary pollution control is the key problem for technically needing to solve.
4. in order to effectively increase economic efficiency, in rubbish heat treatment process, the organic efficiency of heat needs to improve.It is existing Rubbish heat treatment technics generally use boiler recovery waste incineration after high-temperature flue gas heat, produce steam shift onto steam turbine hair Electricity, whole transition heat efficiency losses are larger, handle identical quantity of refuse, relative reduction thermal losses and raising heat exchanger effectiveness can To improve the thermal efficiency.
For example following patent of existing technology:External combustion wet air gas turbine power generating system (ZL 01120378.1), combustion gas wheel Machine electricity generation system and its progress control method (ZL 200880007113.7), double-fuel combustion-supporting type gas-steam combined cycle system System (ZL 200610062631.1), coal powder gas turbine generation system and the process for producing coal powder two-phase flow fuel (ZL200610062055.0), multiple row sectional drive combined type domestic garbage incinerator (ZL200710092508.9) and two-part All referred in waste incinerator (ZL201010268376.2) to the problem of:Rubbish heat treatment mode method is not bound with, and Rubbish heat treatment secondary pollution control, smoke components complexity the problems such as;It is anti-to aoxidize that conventional garbage is heat-treated thermal chemical reaction Based on answering, reduction reaction auxiliary, secondary pollution is also easy to produce, and burned oxygen quotient is big, First air, Secondary Air infeed amount are big, Dust content is higher in flue gas, and heat reclaiming system and smoke processing system are had a great influence, and easy dust stratification, exhaust gas volumn is larger, Relative reduction thermal conversion efficiency;Refuse gasification synthesizes the deep purifying problem of flue gas, it is necessary to synthesize flue gas cleannes after burning Meet gas turbine requirement, and the application of refuse gasification burning-gas and steam turbine combined cycle generation;Rubbish is heat-treated The innovation of mode, exhaust gas volumn is reduced, change flue gas composition, chemical reaction environment becomes reduction reaction, the relative raising of the thermal efficiency.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of transition heat efficiency losses are smaller, heat Organic efficiency is higher, and pollutant and CO2 discharge refuse gasification combustion gas and the steam turbine joint that lower high-moisture gas recycles Electricity generation system.
The object of the present invention is achieved like this:
The refuse gasification combustion gas and steam turbine combined generating system that a kind of high-moisture gas recycles, including refuse gasification burn Burning system, steam generator system, electricity generation system, the steam generator system have drum, a superheater, the electricity generation system include blender, Low-pressure air compressor, pressure-air compressor, synthesis flue gas compressor, synthesis smoke combustion room, turbine a, turbine b, Steam turbine, generator a, generator b, waste heat boiler, air-water heat exchanger, air vapour gas heat exchanger, synthesis gas vapour gas heat exchanger, again Circulating fan, mixer/separator and to water input system, the side wall of the blender is provided with first entrance, second entrance, The bottom of the blender is provided with delivery port, and the top of the blender is provided with venthole, and the first entrance of the blender connects Connect the saturated vapor outlet of drum, the gas outlet of the second entrance connection pressure-air compressor of the blender, the high pressure The gas outlet of the air inlet connection low-pressure air compressor of air compressor, the air inlet and air of the low-pressure air compressor Connection, the water inlet of the delivery port connection drum of the blender, the air intake of the venthole connection superheater of the blender, The venthole output high pressure superheated steam of the superheater, the venthole connection turbine a of superheater air inlet are described Turbine a and generator a power connectors, high pressure superheated steam promote turbine a to generate electricity, the air inlet of the synthesis flue gas compressor The Waste gas outlet of mouth connection steam generator system, the height that the gas outlet output steam generator system of synthesis flue gas compressor has not utilized press Into flue gas, the air inlet of the synthesis smoke combustion room connects the gas outlet of synthesis flue gas compressor respectively, superheater goes out vapour Mouthful, by mixed combustion in high pressure superheated steam and high-pressure synthesis flue gas input synthesis smoke combustion room, synthesize smoke combustion room Gas outlet connection turbine b air inlet, the turbine b and generator b power connectors, high-temperature flue gas promote turbine b hairs Electricity, turbine b gas outlet connection waste heat boiler, the venthole connection steam turbine of the waste heat boiler, the steam turbine and hair Motor b power connectors, the superheated steam pushing turbine of waste heat boiler discharge generate electricity, the discharge outlet of the waste heat boiler, steamer The discharge outlet of machine connects the water inlet to water input system respectively;
The gas outlet of the turbine a connects the heating passage of synthesis gas vapour gas heat exchanger, air vapour gas heat exchanger respectively Heating passage, reconnected again after the heating passage parallel connection of the heating passage, air vapour gas heat exchanger of synthesis gas vapour gas heat exchanger The air inlet of circulating fan, the air inlet of the Waste gas outlet connection recirculation blower of the waste heat boiler, recirculation blower Gas outlet connects mixer/separator, and the mixer/separator isolates nitrogen purge, and residual gas input refuse gasification burns system System is used as gasifying agent, and synthesis gas is connected between the air inlet of the synthesis smoke combustion room and the gas outlet for synthesizing flue gas compressor The heated passage of vapour gas heat exchanger, air is connected between the second entrance of the blender and the gas outlet of pressure-air compressor The heated passage of vapour gas heat exchanger, between the low-pressure air compressor, pressure-air compressor connect air-water heat exchanger by The passage of heat, it is described to water input system delivery port connection air-water heat exchanger heating passage after to steam generator system, waste heat boiler supply Water.
Further, it is described to water input system include be sequentially connected in series by pipeline condenser, water pump, oxygen-eliminating device, increasing Water pump, the discharge outlet of the waste heat boiler are connected between water pump, oxygen-eliminating device by pipeline, between the water pump, oxygen-eliminating device Water inlet to water input system is set, and the water inlet to water input system connects water source, the condenser by moisturizing pipeline Water inlet the discharge outlet of steam turbine is connected by pipeline, the delivery port of the booster water pump is the water outlet to water input system Mouthful.
The steam that condenser can not utilize steam output device is all converted to water, and absorbs the heat of steam release Amount, the main function of oxygen-eliminating device is exactly to remove the oxygen and other gases in boiler feedwater with it, ensures the quality of feedwater, is increased Water pump can improve hydraulic pressure, ensure the water supply capacity to water input system, can be to steam turbine, waste heat pot to water input system The water that fire grate goes out carries out further heat recovery, improves heat recovery efficiency.
Further, power connects successively by the low-pressure air compressor, pressure-air compressor, turbine a, generator a Connect, and synchronous axial system;The synthesis flue gas compressor, turbine b, steam turbine, generator b power connectors, and synchronously turning successively It is dynamic.
Further, the steam generator system includes boiler body, and the boiler body has cyclone dust removal room, furnace chamber a, stove Room b, the lower end of the cyclone dust removal room set smoke inlet, and smoke inlet and the refuse gasification CIU of cyclone dust removal room connect Connect, cyclone dust removal room upper end is the 3rd exhanst gas outlet, and the 3rd exhanst gas outlet of cyclone dust removal room upper end connects with furnace chamber a upper end Logical, the furnace chamber a, furnace chamber b lower end connect, the upper end setting waste gas outlet of the furnace chamber b, along week in the cyclone dust removal room To described superheater provided with water-cooling wall in a ring, is provided with the furnace chamber a, evaporator, boiler sheet are provided with furnace chamber b The top of body sets described drum, and the cyclone dust removal room, furnace chamber a, furnace chamber b are respectively positioned on below drum, set on the drum There is carbonated drink import, water separator is provided with drum, for separating steam water interface, drum connects water by the first down-comer The water inlet of cold wall, the water isolated for exporting water separator, drum connect entering for evaporator by the second down-comer The mouth of a river, the water isolated for exporting water separator, the water-cooling wall, the venthole of evaporator are connected by steam pipe respectively The air intake of drum, for the high-temperature steam that flows back.
In order to which the flue gas discharged to furnace chamber c carries out harmless treatment, it is preferable that the boiler body has furnace chamber c, described Furnace chamber c upper end connects with the waste gas outlet of furnace chamber b upper ends, and furnace chamber c lower end sets Waste gas outlet, and the furnace chamber c's is useless Gas floss hole connects flue gas purification system, and the flue gas purification system includes thick cleaning system, booster fan, the essence being sequentially connected Deduster is washed, the flue gas after purification feeds synthesis flue gas compressor.
Preferably, the thick cleaning system includes aeration tower and deduster, and the fine purifiation deduster uses Lei Shi venturi Washing system, including Venturi scrubber and cyclone separator, the Waste gas outlet of the aeration tower connection furnace chamber c, aeration tower Outlet connection deduster, then make deep purifying into fine purifiation deduster after being pressurized by booster fan.
Thick cleaning system can remove the impurity of big particle diameter, dust, and fine purifiation deduster can remove steam, micro mist dirt etc., Meet gas turbine to the requirement of combustion gas cleannes.
In order to which the flue gas discharged to furnace chamber b carries out further heat recovery, heat recovery efficiency is improved, further Ground, the furnace chamber c is interior to be provided with economizer, and the water inlet of the economizer connects with the delivery port to water input system, the section The delivery port of hot device and the carbonated drink inlet communication of drum.
Further, the refuse gasification CIU includes incinerator, circulation air feed system, the gasification burning Stove includes grate, and feed hopper, gasification furnace and the incinerator set gradually on grate along feedstock direction, the rear of gasification furnace For the slag mouth of gasification furnace, incinerator is located at the front lower place of gasification furnace slag mouth, and the rear of incinerator is the slag notch of incinerator, The grate is provided with garbage pusher device, and the garbage pusher device is located at the lower section of feed hopper, for by the rubbish in feed hopper It is pushed into gasification furnace, the lower section of gasification furnace moving hearth and incinerator moving hearth are respectively arranged below with least one independence The air compartment set, is provided with windrow seal section, the stove between the gasification furnace and incinerator between the feed hopper, gasification furnace Transition slag section is left on frame part, the transition slag section is provided with residue pusher, for the rubbish that will be fallen in gasification furnace In rubbish residue push-in incinerator, isolating door to be opened/closed is provided with the transition slag section, the isolating door is used for will gasification Stove, incinerator cut-off;The gasification furnace, incinerator include furnace shell, moving hearth, the forward and backward side difference of the gasification furnace respectively Sealed by windrow seal section, transition slag section, the transition slag section isolation gasification furnace, incinerator, make gasification furnace, incinerator Independently of each other;The gasification furnace, incinerator set secondary confession respectively respectively in arching upward shape on the face arch of the gasification furnace, rear arch Air port, the vault of the gasification furnace set the first exhanst gas outlet, the smoke inlet and the first exhanst gas outlet of the cyclone dust removal room Connection, the vault of the incinerator set the second exhanst gas outlet, igniting combustion supporting hole are respectively equipped with the gasification furnace, incinerator;
The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, and the inlet end of the dust arrester leads to Piping is connected with the second exhanst gas outlet, and the outlet side of the dust arrester is connected by pipeline with the inlet end of the first blower fan, The outlet side of first blower fan connects the house steward of the first manifold, the branch pipe of first manifold respectively with gasification furnace moving hearth Each air compartment of lower section, each secondary air feed mouth on gasification furnace and the connection of the smoke inlet of cyclone dust removal room, described the First regulating valve, the air inlet and atmosphere of second blower fan, second wind are set respectively on each branch pipe of one manifold The gas outlet of machine connects the house steward of the second manifold, the branch pipe of second manifold respectively with each one below incinerator moving hearth The inlet end of secondary air compartment and dust arrester, outlet side are connected, and the second regulation is set respectively on each branch pipe of second manifold Valve, the cyclone dust removal room are provided with some combustion air air feed mouths, and some combustion air air feed mouths are located at smoke inlet, the 3rd Between exhanst gas outlet, in addition to the 3rd manifold, the house steward of the 3rd manifold connect with the gas outlet of the second blower fan, and the described 3rd Each branch pipe of manifold is connected with some combustion air air feed mouths respectively, and the 3rd regulating valve is set respectively on each branch pipe of the 3rd manifold.
In order to discharge furnace chamber a, furnace chamber b, waste residue caused by flue gas deposition in cyclone dust removal room, and prevent waste residue effusion from producing Pollution, it is preferable that common slag notch is provided with below the furnace chamber a, furnace chamber b, the lower end of the cyclone dust removal room is provided with from upper The taper slag notch to diminish to lower radius, the common slag notch, taper slag notch connect with the burner hearth of gasification furnace respectively.
In order to which the flue gas discharged to furnace chamber b carries out further heat recovery, heat recovery efficiency is improved, it is preferable that Air preheater, the air inlet of the outlet side connection air preheater of second blower fan, air preheat are provided with the furnace chamber c The gas outlet of device connects the house steward of the second manifold.
By adopting the above-described technical solution, the present invention has the advantages that:
Pressure-air, the saturated vapor of drum output exported present invention employs blender to air compressor mixes Close, high pressure superheated steam is exported after superheater, high pressure superheated steam promotes turbine a to generate electricity, and the present invention is using synthesis flue gas The high-pressure synthesis flue gas that compressor output steam generator system has not utilized, the high pressure superheated steam and high-pressure synthesis cigarette of superheater output Mixed combustion in gas input synthesis smoke combustion room, output high-temperature flue gas promote turbine b to generate electricity, and turbine b gas outlet connects Waste heat boiler is connect, the discharge outlet of waste heat boiler is connected to water input system, and the superheated steam of the waste heat boiler discharge promotes vapour Turbine generates electricity, and take full advantage of steam generator system does not carry out combined cycle generation using complete flue gas;The present invention also passes through air The heat that vapour gas heat exchanger, synthesis gas vapour gas heat exchanger recovery turbine a have not been utilized, it is defeated using air-water heat exchanger recovery feedwater Enter the amount of residual heat of system, using air-water heat exchanger, air vapour gas heat exchanger pre-add hot-air, utilize synthesis gas vapour gas heat exchanger Pre-add hot synthesis gas, substantially increase heat recovery efficiency;Waste heat boiler, the discharge outlet of steam turbine are connected to water input system, institute State and steam generator system, waste heat boiler are supplied water to water input system, take full advantage of the heat not utilized of waste heat boiler, steam turbine Amount carries out combined cycle generation;The present invention utilizes mixer/separator recovery H2O,CO2,O2Deng gas as refuse gasification burning system The gasifying agent of system, the pyrolysis, gasification to rubbish are favourable, relative to reduce CO2 discharges, and gasifying agent participates in refuse gasification CIU Learn reaction and produce more CO, H2;The discharge capacity of waste gas is greatly reduced, transition heat efficiency losses are smaller, the recovery effect of heat Rate is higher.
This steam generator system by annular water-cooling wall be arranged on cyclone dust removal room on, synthesis gas in cyclone dust removal Indoor Combustion more To be abundant, temperature is higher caused by burning, relatively reduces thermal losses and improves heat exchanger effectiveness.The recovery of this steam generator system For origin of heat in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas enters cyclone dust removal room, while to whirlwind Tangential air-supplied combustion-supporting flammable synthesis gas in dirt pocket, flue gas is successively by cyclone dust removal room, furnace chamber a, furnace chamber b, section warm Device and air preheater.Recycle the pre- hot condensed water of economizer, pre- hot condensed water enters boiler part, condensed water water-cooling wall with Heated in evaporator, form saturated vapor and enter drum, saturated vapor enters superheater after steam-water separation, is thermally formed again Vapours exports, for generating electricity.Present inventive concept is novel, using cyclone-burning method, reduces fly ash content in flue gas;Synthesis Gas ignition temperature is high, and gas residence time length, pollutant is effectively decomposed, and reduces pollutant emission, it is continuous to realize rubbish Synthesis gas burning disposal and heat recovery and utilization after gasification.
Gasification furnace, the incinerator of incinerator are provided separately, and the vault of gasification furnace sets the first exhanst gas outlet, incinerator Vault the second exhanst gas outlet is set, handle flue gas respectively beneficial to the difference according to flue gas quality, while be advantageous to remove flue gas Dirt, the flue gas of higher quality can be provided, make the utilization rate of flue gas higher, the waste residue of discharge is less.
Second blower fan blasts air and provides First air for incinerator and provide temperature adjustment confession for cyclone separator, the first blower fan Wind, by the second regulation valve regulation wind supply quantity on corresponding pipeline, incinerator residue is set fully to burn;Then, the first blower fan is taken out The flue gas of incinerator is taken, after temperature adjustment and cyclone collection flying dust, forms the flue gas supply gasification furnace of certain pressure First air and Secondary Air, by the first regulation valve regulation wind supply quantity on corresponding pipeline, rubbish in gasification furnace is set to produce gasification, gas Change the flue gas for containing a certain amount of synthesis gas in stove, discharged from the first exhanst gas outlet, into cyclone dust removal room processing links, the first wind The unnecessary flue gas that machine extracts also enters cyclone dust removal room simultaneously, takes full advantage of the high-temperature flue gas of incinerator discharge, improves energy The utilization rate of amount, cyclone dust removal room provide high-temperature flue gas.The stoker fired grate formula refuse gasification incinerator garbage treatment quantity of this structure Greatly, the rubbish bed of material can undergo the stage that burns of drying, gasification and residue on stoker fired grate, and adaptation China's house refuse is aqueous The characteristics such as height, complicated component are measured, the energy conversion efficiency in garbage processing procedure is improved and reduces pollutant emission in flue gas Amount, effectively prevents secondary pollution, and can realize large-scale rubbish continuous gasification burning disposal, ensures that refuse gasification burns effect Fruit and lime-ash clinker ignition loss, it is relative to reduce thermal losses and improve heat exchanger effectiveness, improve the thermal efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation of electricity generation system;
Fig. 3 is the structural representation of steam generator system;
Fig. 4 is the structural representation of flue gas purification system;
Fig. 5 is the structural representation of cyclone dust removal room;
Fig. 6 is Fig. 5 schematic top plan view;
Fig. 7 is the structural representation of incinerator;
Fig. 8 is the structural representation of circulation air feed system.
Reference
1 is incinerator, and 101 be grate, and 102 be feed hopper, and 103 be gasification furnace, and 104 be incinerator, and 105 be stove Bed, 106 be garbage pusher device, and 107 be an air compartment, and 108 be windrow seal section, and 109 be transition slag section, and 110 push away for residue Glassware, 111 be isolating door, and 112 be the first exhanst gas outlet, and 113 be the second exhanst gas outlet, and 114 be igniting combustion supporting hole, and 115 be two Secondary air feed mouth, 116 be slag notch, and 117 be slag mouth;
201 be dust arrester, and 202 be the first blower fan, and 203 be the second blower fan, and 204 be the first manifold, and 205 be the second discrimination Pipe, 206 be the 3rd manifold, and 207 be the first regulating valve, and 208 be the second regulating valve, and 209 be the 3rd regulating valve;
3 be cyclone dust removal room, and 301 be dirt pocket igniting combustion supporting hole, and 302 be taper slag notch, and 303 be smoke inlet, 304 It is combustion air air feed mouth for the 3rd exhanst gas outlet, 305;
4 be boiler body, and 402 be furnace chamber a, and 403 be furnace chamber b, and 404 be furnace chamber c, and 405 be water-cooling wall, and 406 be superheater, 407 be evaporator, and 408 be drum, and 409 be the first down-comer, and 410 be the second down-comer, and 411 be steam turbine, and 412 is defeated to feed water Enter system, 413 be condenser, and 414 be water pump, and 415 be oxygen-eliminating device, and 416 be booster water pump, and 417 be moisturizing pipeline, and 418 be section Hot device, 419 be flue gas purification system, and 420 be aeration tower, and 421 be deduster, and 422 be booster fan, and 423 be fine purifiation deduster, 424 be air preheater.
5 be electricity generation system, and 501 be blender, and 502 be generator a, and 503 be low-pressure air compressor, and 504 be synthesis cigarette Air pressure mechanism of qi, 505 be synthesis smoke combustion room, and 506 be turbine a, and 507 be waste heat boiler, and 508 be generator b, and 509 be whirlpool Turbine b, 510 be air-water heat exchanger, and 511 be mixer/separator, and 512 be air vapour gas heat exchanger, and 513 be that synthesis gas vapour gas exchanges heat Device, 514 be pressure-air compressor, and 515 be recirculation blower.
Embodiment
Referring to Fig. 1, the refuse gasification combustion gas that is recycled for high-moisture gas and steam turbine combined generating system it is a kind of compared with Good embodiment, including refuse gasification CIU, steam generator system, electricity generation system 5, the steam generator system have drum 408, mistake Hot device 406.
Referring to Fig. 2, the electricity generation system 5 includes blender 501, low-pressure air compressor 503, pressure-air compressor 514th, flue gas compressor 504, synthesis smoke combustion room 505, turbine a506, turbine b509, steam turbine 411, generating are synthesized Machine a502, generator b508, waste heat boiler 507, air-water heat exchanger 510, vapor-water heat exchanger 511, air vapour gas heat exchanger 512, Synthesis gas vapour gas heat exchanger 513 and to water input system 412, further, the low-pressure air compressor 503, high pressure are empty Air pressure mechanism of qi 514, turbine a506, generator a502 power connectors, and synchronous axial system successively;The synthesis flue gas compressor 504th, turbine b509, steam turbine 411, generator b508 power connectors, and synchronous axial system successively.
The side wall of the blender 501 is provided with first entrance, second entrance, and the bottom of the blender 501 is provided with out The mouth of a river, the top of the blender 501 are provided with venthole, the saturated vapor of the first entrance connection drum of the blender 501 Outlet, the gas outlet of the second entrance connection pressure-air compressor 514 of the blender 501, the pressure-air compressor The gas outlet of 514 air inlet connection low-pressure air compressor 503, the air inlet and air of the low-pressure air compressor 503 Connection, the water inlet of the delivery port connection drum of the blender 501, the venthole connection superheater of the blender 501 Air intake, the venthole output high pressure superheated steam of the superheater, the venthole connection turbine a506's of the superheater Air inlet, the turbine a506 and generator a502 power connectors, high pressure superheated steam promotes turbine a506 to generate electricity, described The Waste gas outlet of the air inlet connection steam generator system of flue gas compressor 504 is synthesized, the gas outlet of synthesis flue gas compressor 504 is defeated Go out the high-pressure synthesis flue gas that steam generator system has not utilized, the air inlet of the synthesis smoke combustion room 505 connects synthesis cigarette respectively The gas outlet of air pressure mechanism of qi 504, the venthole of superheater, by high pressure superheated steam and the input synthesis flue gas combustion of high-pressure synthesis flue gas Burn mixed combustion in room 505, the gas outlet connection turbine b509 of synthesis smoke combustion room 505 air inlet, the turbine B509 and generator b508 power connectors, high-temperature flue gas promote turbine b509 to generate electricity, more than turbine b509 gas outlet connection Heat boiler 507, the venthole connection steam turbine 411 of the waste heat boiler 507, the steam turbine 411 and generator b508 power Connection, the superheated steam pushing turbine 411 that waste heat boiler 507 is discharged generate electricity, the discharge outlet of the waste heat boiler 507, steamer The discharge outlet of machine 411 connects the water inlet to water input system 412 respectively;
The gas outlet of the turbine a connects the heating passage of synthesis gas vapour gas heat exchanger 513, the heat exchange of air vapour gas respectively The heating passage of device 512, heating passage, the heating passage of air vapour gas heat exchanger 512 of synthesis gas vapour gas heat exchanger 513 are in parallel The air inlet of recirculation blower 515, the air inlet of the Waste gas outlet connection recirculation blower 515 of the waste heat boiler are reconnected afterwards Mouthful, the gas outlet of recirculation blower 515 connection mixer/separator 511, in the present embodiment, mixer/separator 511 uses UF membrane Device, the mixer/separator 511 isolate nitrogen purge, and residual gas inputs refuse gasification CIU as gasifying agent, institute State and connect synthesis gas vapour gas heat exchanger 513 between the air inlet of synthesis smoke combustion room and the gas outlet of synthesis flue gas compressor Heated passage, air vapour gas heat exchanger is connected between the second entrance of the blender and the gas outlet of pressure-air compressor 512 heated passage, the heated logical of air-water heat exchanger 510 is connected between the low-pressure air compressor, pressure-air compressor Road, it is described to water input system delivery port connection air-water heat exchanger 510 heating passage after to steam generator system, waste heat boiler supply Water.
Further, it is described to water input system 412 include be sequentially connected in series by pipeline condenser 413, water pump 414, Oxygen-eliminating device 415, booster water pump 416, the discharge outlet of the waste heat boiler 507 are connected to water pump 414, oxygen-eliminating device 415 by pipeline Between, the water inlet to water input system 412 is set between the water pump 414, oxygen-eliminating device 415, to entering for water input system 412 The mouth of a river connects water source by moisturizing pipeline 417, and the water inlet of the condenser 413 connects the draining of steam turbine 411 by pipeline Mouthful, the delivery port of the booster water pump 416 is the delivery port to water input system 412.
Referring to Fig. 3, in the present embodiment, steam generator system includes boiler body 4, and the boiler body 4 has cyclone dust removal room 3rd, furnace chamber a402, furnace chamber b403, furnace chamber c404.
Referring to Fig. 5, Fig. 6, the lower end of the cyclone dust removal room 3 sets smoke inlet 303, the cigarette of the cyclone dust removal room 3 Gas entrance 303 is connected by pipeline with the first exhanst gas outlet 112 of gasification furnace 103, and the upper end of cyclone dust removal room 3 is that the 3rd flue gas goes out Mouth 304, the smoke inlet 303, the 3rd exhanst gas outlet 304 are located at the opposite side of the circumferential wall of cyclone dust removal room 3, cyclone dust removal room 3 top sets dirt pocket igniting combustion supporting hole 301.In order that flue gas, combustion air are sufficiently mixed in cyclone dust removal room 3, burnt Discharged afterwards from the 3rd exhanst gas outlet 304, the cyclone dust removal room 3 is provided with some combustion air air feed mouths 305, described some combustion-supporting Wind air feed mouth 305 is between smoke inlet 303, the 3rd exhanst gas outlet 304.The smoke inlet 303, the 3rd exhanst gas outlet 304th, combustion air air feed mouth 305 is radially or tangentially set along the circumferential wall of cyclone dust removal room 3.3rd cigarette of the upper end of cyclone dust removal room 3 Gas outlet 304 connects with furnace chamber a402 upper end, the furnace chamber a402, furnace chamber b403 lower end connection, the furnace chamber b403's Upper end sets waste gas outlet, and the lower end of the cyclone dust removal room 3 is provided with the taper slag notch 302 that radius diminishes from top to bottom, should Taper slag notch 302 connects with the burner hearth of gasification furnace 103.Common slag notch is provided with below the furnace chamber a402, furnace chamber b403, The common slag notch connects with the burner hearth of gasification furnace 103.In the present embodiment, the common slag notch and taper slag notch The 302 afterbody changeover portion with the burner hearth of gasification furnace 103 connects.
The interior edge inwall of cyclone dust removal room 3 is circumferentially with water-cooling wall 405 in a ring, is provided with the furnace chamber a402 Superheater 406, evaporator 407 is provided with furnace chamber b403, and the top of boiler body 4 sets drum 408, the cyclone dust removal room 3rd, furnace chamber a402, furnace chamber b403 are respectively positioned on the lower section of drum 408, and the drum 408 is provided with carbonated drink import, mixed for inputting carbonated drink Compound, drum 408 is interior to be provided with water separator, and for separating steam water interface, drum 408 is connected by the first down-comer 409 The water inlet of water receiving cold wall 405, the water isolated for exporting water separator, drum 408 are connected by the second down-comer 410 The water inlet of evaporator 407 is connect, the water isolated for exporting water separator, the water-cooling wall 405, evaporator 407 Venthole connects the air intake of drum 408, for the high-temperature steam that flows back, the saturated vapor of the drum 408 by steam pipe respectively Outlet connects the air intake of superheater 406 by pipeline, for the high-temperature steam of backflow to be inputted in superheater 406, the mistake The venthole output superheated steam of hot device 406.
The upper end of the furnace chamber c404 connects with the waste gas outlet of furnace chamber b403 upper ends, and furnace chamber c404 lower end sets waste gas Floss hole, the furnace chamber c404 is interior to be provided with economizer 418, the water inlet of the economizer 418 and the delivery port of booster water pump 416 Connection, the delivery port of the economizer 418 and the carbonated drink inlet communication of drum 408.Furnace chamber c404 Waste gas outlet connection cigarette Gas cleaning system 419, referring to Fig. 4, the flue gas purification system 419 includes thick cleaning system, the booster fan being sequentially connected 422nd, fine purifiation deduster 423, the flue gas after purification feed synthesis flue gas compressor.The thick cleaning system includes aeration tower 420 With deduster 421, the fine purifiation deduster 423 uses Lei Shi venturi scrubbing systems, including Venturi scrubber and whirlwind point From device, the aeration tower 420 connects furnace chamber c Waste gas outlet, and the outlet of aeration tower 420 connects deduster 421, then by supercharging wind Make deep purifying into fine purifiation deduster 423 after the supercharging of machine 422.
Referring to Fig. 7, Fig. 8, include incinerator and its circulation air feed system, gasification burning for refuse gasification CIU Stove includes gasification furnace 103, incinerator 104, can seal or connect between gasification furnace 103 and incinerator 104, the stove of gasification furnace 103 The lower section of bed and the siege of incinerator 104 are respectively arranged below with two independent air compartments 107, the gasification furnace 103 Secondary air feed mouth 115 is set respectively on face arch, rear arch, and the vault of the gasification furnace 103 sets the first exhanst gas outlet 112, described The vault of incinerator 104 sets the second exhanst gas outlet 113.
Incinerator includes grate 101, and feed hopper 102, the gas set gradually on grate 101 along feedstock direction Change stove 103 and incinerator 104, the rear of incinerator 104 is the slag notch 116 of incinerator 104, and the incinerator 104 is provided with Slag mouth 117, the slag notch 116 of the incinerator 104 are located at the underface of incinerator slag mouth 117, and the slag mouth 117 is logical Piping connects with the slag notch of dust arrester 201.This sealing structure effect is good, can effectively hold reduction pollutant discharge amount. Gasification furnace 103 is mainly that the carbon-containing part of rubbish is gasified, and discharges flammable gasification flue gas and rubbish residue, incinerator 104 are substantially carried out the burning processing of carbon residue, and discharge innoxious lime-ash.The siege 105 of gasification furnace 103 and incinerator 104 is equal The stoker fired grate formula moving hearth 105 independently driven using segmentation, the fire grate of stoker fired grate formula moving hearth 105 is by travelling oven Row plate forward lapped with fixed grate plate, it is spaced collect form, adjacent multigroup moving grate plate is connected by pull bar, is adopted Driven with a set of drive device.Stoker fired grate formula 105 carrier as conveying garbage of moving hearth, embodiments thereof can be each Type moving hearth 105, such as chain-plate type, drum-type, multisection type fire grate system.
The grate 101 is provided with garbage pusher device 106, and the garbage pusher device 106 is located at the lower section of feed hopper 102, For the rubbish in feed hopper 102 to be pushed into gasification furnace 103, the lower section of the moving hearth 105 of gasification furnace 103 and incinerator 104 moving hearths 105 are respectively arranged below with an at least one air compartment 107 being independently arranged, in the present embodiment, with gasification furnace Fire grate, drive device corresponding to air compartment 107 of 103 first halfs, as the dryer section of the siege 105 of gasification furnace 103, with gasification The gasification section of fire grate, drive device as the siege 105 of gasification furnace 103 corresponding to a latter half of air compartment 107 of stove 103.Gasification The 1-2 independent air feeds of air compartment 107 can be respectively adopted in dryer section, the gasification section of the siege 105 of stove 103, can also distinguish Using the 3-4 independent air feeds of air compartment 107.Certainly, fire grate, drive device and an air compartment 107 can not be also correspondingly arranged, Preferably bed of material movement and air distribution relation on regulation moving hearth 105.Incinerator 104 can use 1-4 independent First airs The air feed of room 107, burn rear lime-ash and excluded from slag notch, into next step treatment process.
Windrow seal section 108 is provided between the feed hopper 102, gasification furnace 103, the work of garbage pusher device 106 is entered to be located in place In in windrow seal section 108, garbage raw material is put into from feed hopper 102 and fallen, and garbage pusher device 106 retreats, then promotes, reciprocal more Secondary pusher forms windrow in windrow seal section 108, the entrance of gasification furnace 103 is in windrow sealing state, and enhancing gasification furnace 103 is close Effect is sealed, solves garbage pusher device 106 and 102 easy leakage problem of feed hopper.When needing the complete prepurging to dispose all rubbish, The forward impelling half stroke again of garbage pusher device 106, rubbish is pushed completely into gasification furnace 103, loses the entrance of gasification furnace 103 Windrow sealing effectiveness.Transition slag section 109, institute are left on the part of grate 101 between the gasification furnace 103 and incinerator 104 State transition slag section 109 and be provided with residue pusher 110, the rubbish residue for will be fallen in gasification furnace 103 is pushed into incinerator In 104, transition slag section 109 can be at windrow sealing state when accumulating rubbish residue, strengthen the sealing effectiveness of gasification furnace 103, Solves the problems, such as string wind between gasification furnace 103, incinerator 104.In the present embodiment, being provided with the transition slag section 109 can The isolating door 111 of opening and closing, the isolating door 111 are used to separate gasification furnace 103, incinerator 104.At furnace lifting initial stage or need to control When altering wind between gasification furnace 103 and incinerator processed, isolating door 111 is closed, stacking a certain amount of residue when slag section forms windrow After sealing, isolating door 111 can be kept to open, coordinate to use with the residue pusher 110 that lower section is set, to realize that rubbish is continuous Gasification burning processing.
The upper end of the gasification furnace 103, the upper end of incinerator 104 are respectively in the shape that arches upward, the face arch of the gasification furnace 103 Flat construction, or, the face arch of gasification furnace 103 is inclined upwardly structure for rear end.The vault of the gasification furnace 103 sets the first cigarette Gas outlet 112, the vault of the incinerator 104 set the second exhanst gas outlet 113, and the upper end of gasification furnace 103 is arched upward, burnt Igniting combustion supporting hole 114 is respectively equipped with the arching upward of the upper end of stove 104.Flue gas gasify from the first exhanst gas outlet 112, the second exhanst gas outlet 113 exclude, and the furnace cavity of gasification furnace 103 is relatively reduced compared with traditional waste incinerator;Forward and backward arch and moving hearth 105 Relative position diminishes, and reduces the space of incinerator occupancy, is also easier to be incubated, reduces the amount of leakage of heat, be advantageous to rubbish Rubbish fully gasifies.Secondary air feed mouth 115 is set respectively on the face arch of the gasification furnace 103, rear arch.
The circulation air feed system includes dust arrester 201, the first blower fan 202, the second blower fan 203, in the present embodiment, institute It is cyclone separator or hot precipitator 421 to state dust arrester 201, and first blower fan 202 is high-temperature blower, described second Blower fan 203 is air blower.The inlet end of the dust arrester 201 is connected by pipeline with the second exhanst gas outlet 113, the dedusting The outlet side of device 201 is connected by pipeline with the inlet end of the first blower fan 202, the outlet side connection of first blower fan 202 The house steward of first manifold 204, the branch pipe of first manifold 204 respectively with the lower section of the moving hearth of gasification furnace 103 it is each once The smoke inlet 303 of each secondary air feed mouth 115 and cyclone dust removal room 3 on air compartment 107, gasification furnace 103 connects, and described first First regulating valve 207 is set respectively on each branch pipe of manifold 204, and air inlet and the material pit air of second blower fan 203 connect It is logical, the foul smell distributed in material pit can be absorbed, the gas outlet of second blower fan 203 connects the house steward of the second manifold 205, institute State the branch pipe of the second manifold 205 respectively with each air compartment 107 and dust arrester 201 below the moving hearth of incinerator 104 Inlet end, outlet side connection, the second regulating valve 208 is set respectively on each branch pipe of second manifold 205.Also include the 3rd Manifold 206, the house steward of the 3rd manifold 206 connect with the gas outlet of the second blower fan 203, each of the 3rd manifold 206 Pipe is connected with some combustion air air feed mouths 305 respectively, and the 3rd regulating valve 209 is set respectively on each branch pipe of the 3rd manifold 206.Institute To state and air preheater 424 is provided with furnace chamber c404, in the present embodiment, air preheater 424 is located at the downstream of economizer 418, The air inlet of the outlet side connection air preheater 424 of second blower fan 203, the gas outlet connection the of air preheater 424 The house steward of two manifolds 206, the house steward of the 3rd manifold 206 connect with the gas outlet of air preheater 424.
The First air of gasification furnace 103 is that the flue gas generation certain pressure of high-temperature blower extraction incinerator 104 blasts gasification furnace 103 Corresponding to the lower section of stoker fired grate formula moving hearth 105 in an air compartment 107, then pass through the air holes spray on moving hearth 105 Rubbish is shot through, is gasified, wind supply quantity is adjusted by the first regulating valve 207 on corresponding each branch pipe.The Secondary Air of gasification furnace 103 Be high-temperature blower extract incinerator 104 flue gas produce certain pressure blast the burner hearth of gasification furnace 103, its spray-hole is arranged on gasification On the face arch of stove 103 and rear arch.Secondary air feed mouth 115 is provided with forward and backward arch, improves gasification efficiency, strengthens macromolecule in flue gas Substance decomposition.Igniting combustion supporting hole 114 is provided with rear arch, temperature uses in furnace lifting, baker and stable gasification furnace 103, passes through correspondingly The first regulating valve 207 regulation wind supply quantity on each branch pipe.The air inlet of second blower fan 203 and material pit atmosphere, the The air that two blower fans 203 blast can be cold wind or the hot blast after heating.The gas outlet connection the of second blower fan 203 The house steward of two manifolds 205, the branch pipe of second manifold 205 each First air with the lower section of 104 moving hearth of incinerator 105 respectively The inlet end of room 107 and dust arrester 201, outlet side are connected, and second is set respectively on each branch pipe of second manifold 205 Regulating valve 208.The First air of incinerator 104 is that air blower blasts the air of certain pressure under stoker fired grate formula moving hearth 105 Corresponding to side in an air compartment 107, then by an air holes spray penetration residue on moving hearth 105, residual burning is carried out, Wind supply quantity is adjusted by the first regulating valve 207 on corresponding each branch pipe.The inlet end of dust arrester 201, the air intake of outlet side are Temperature adjustment air feed, temperature adjustment air feed are that the air of certain pressure is blasted incinerator 104 and exported (i.e. cyclone inlet) by air blower Temperature adjustment is carried out, meanwhile, Cyclone outlet (i.e. high-temperature blower entrance) blasts further temperature adjustment, by corresponding each branch pipe First regulating valve 207 adjusts wind supply quantity.
Air feed system is circulated to the waste disposal method after stoker fired grate formula refuse gasification incinerator air feed, this method press with Lower step is carried out:
Step A, the gate of stoker fired grate formula refuse gasification incinerator 1 and atmospheric vent is closed, starts mechanical grate-type rubbish Rubbish incinerator 1, garbage raw material is put into feed hopper 102, the pusher back and forth of garbage pusher device 106 will be from feed hopper 102 The garbage raw material fallen is pushed into the windrow seal section 108 between feed hopper 102, gasification furnace 103, forms windrow seal section 108 Windrow sealing state, unnecessary rubbish fall into the moving hearth 105 of gasification furnace 103, and the moving hearth 105 of gasification furnace 103 works, Rubbish is conveyed into transition slag section 109, the pusher back and forth of residue pusher 110, the rubbish in transition slag section 109 pushed away Enter in incinerator 104, the work conveying garbage of moving hearth 105 of incinerator 104, until rubbish is in gasification furnace 103, incinerator 104 moving hearth 105 is accumulated to required thickness:0.6-0.8m, during baker, the rubbish accumulated can protect mobile stove Bed 105, prevents scaling loss siege 105.Stop feeding intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 and incinerator 104 stops Only work, then, with start-up burner by the igniting combustion supporting hole 114 of gasification furnace 103 and incinerator 104 respectively with gasification furnace 103 and the burner hearth of incinerator 104 communicate, in the presence of start-up burner, gasification furnace 103 and incinerator 104 are carried out furnace lifting, Baker, treat that this process stabilization is completed, gasification furnace 103 and the burner hearth of incinerator 104 is reached 600-700 DEG C of predetermined temperature;Baker Purpose be in order to remove the Natural Water and the crystallization water in lining, in order to avoid when going into operation due to furnace temperature rise it is too fast, moisture content is a large amount of Expansion causes body of heater spalling, bubbling or deformation even furnace wall to collapse, and influences the intensity and service life of heating furnace furnace wall.
Step B, regulation circulation air feed system 2, regulation gasification furnace 103, incinerator 104 and circulation air feed system 2 are started Technological parameter (pusher speed, fire grate speed, a wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, Negative pressure, thickness of feed layer etc. in stove), fed intake to feed hopper 102, the work conveying garbage of moving hearth 105 of gasification furnace 103, rubbish Burning is proceeded by the burner hearth of gasification furnace 103, rubbish residue is accumulated to form windrow sealing at transition slag section 109, made The stove chamber inner combustion state temperature of gasification furnace 103 is stabilized to more than 850 DEG C, the work output combustion of moving hearth 105 of incinerator 104 Rubbish residue after cinder.
Step C, gasification furnace 103, incinerator 104 and each technological parameter (the pusher speed for circulating air feed system 2 are adjusted Degree, fire grate speed, a wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, negative pressure, thickness of feed layer in stove Deng), gasification furnace 103 gradually gasifies to rubbish, and gasification temperature is stable between 700-800 DEG C, makes gasification furnace 103 is stable to produce The high-temperature flue gas of the raw synthesis gas containing 10%-20%, it is equal that the vaporized state of gasification furnace 103 stably carries out low temperature, medium temperature or high-temperature gasification Can.The fired state temperature stabilization of incinerator 104 is set to realize rubbish continuous gasification burning disposal to more than 850 DEG C;It need to adjust simultaneously Each technological parameter of cyclone dust removal room 3, make the temperature stabilization of the 3rd exhanst gas outlet of cyclone dust removal room 3 304 to more than 850 DEG C.
Step D, it need to overhaul or during blowing out, stop feeding intake, regulation gasification furnace 103, incinerator 104 and circulation air feed system 2 technological parameter, gasification furnace 103 is gradually restored to fired state, after rubbish and rubbish residue are burnt, close stoker fired grate Formula refuse gasification incinerator 1 and circulation air feed system 2.Each technological parameter of cyclone dust removal room 3 need to be adjusted simultaneously, make gasification furnace 103 are gradually restored to fired state.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be Various changes are made to it in form and in details, without departing from claims of the present invention limited range.

Claims (10)

1. refuse gasification combustion gas and steam turbine combined generating system that a kind of high-moisture gas recycles, including refuse gasification burn System, steam generator system, electricity generation system, the steam generator system have drum, superheater, it is characterised in that:The electricity generation system bag Include blender, low-pressure air compressor, pressure-air compressor, synthesis flue gas compressor, synthesis smoke combustion room, turbine a, Turbine b, steam turbine, generator a, generator b, waste heat boiler, air-water heat exchanger, air vapour gas heat exchanger, synthesis gas vapour gas Heat exchanger, recirculation blower, mixer/separator and to water input system, the side wall of the blender be provided with first entrance, Second entrance, the bottom of the blender are provided with delivery port, and the top of the blender is provided with venthole, and the of the blender The saturated vapor outlet of one entrance connection drum, the gas outlet of the second entrance connection pressure-air compressor of the blender, The gas outlet of the air inlet connection low-pressure air compressor of the pressure-air compressor, the air inlet of the low-pressure air compressor Mouth and atmosphere, the water inlet of the delivery port connection drum of the blender, the venthole connection superheater of the blender Air intake, the venthole output high pressure superheated steam of the superheater, the venthole connection turbine a of the superheater enters Gas port, the turbine a and generator a power connectors, high pressure superheated steam promote turbine a to generate electricity, the synthesis flue gas pressure The Waste gas outlet of the air inlet connection steam generator system of mechanism of qi, the gas outlet output steam generator system of synthesis flue gas compressor do not utilize Complete high-pressure synthesis flue gas, the air inlet of the synthesis smoke combustion room connect the gas outlet of synthesis flue gas compressor, mistake respectively The venthole of hot device, by mixed combustion in high pressure superheated steam and high-pressure synthesis flue gas input synthesis smoke combustion room, synthesize cigarette The gas outlet connection turbine b of combustion chamber air inlet, the turbine b and generator b power connectors, high-temperature flue gas promote Turbine b generates electricity, turbine b gas outlet connection waste heat boiler, the venthole connection steam turbine of the waste heat boiler, the vapour Turbine and generator b power connectors, the superheated steam pushing turbine of waste heat boiler discharge generate electricity, the draining of the waste heat boiler Mouth, the discharge outlet of steam turbine connect the water inlet to water input system respectively;
The gas outlet of the turbine a connect respectively synthesis gas vapour gas heat exchanger heating passage, air vapour gas heat exchanger plus The passage of heat, recycling is reconnected after the heating passage parallel connection of the heating passage, air vapour gas heat exchanger of synthesis gas vapour gas heat exchanger The air inlet of blower fan, the air inlet of the Waste gas outlet connection recirculation blower of the waste heat boiler, the outlet of recirculation blower Mouth connection mixer/separator, the mixer/separator isolate nitrogen purge or recycling or input refuse gasification CIU As gasifying agent, residual gas inputs refuse gasification CIU as gasifying agent, the air inlet of the synthesis smoke combustion room The heated passage of synthesis gas vapour gas heat exchanger is connected between gas outlet with synthesizing flue gas compressor, the second of the blender enters The heated passage of air vapour gas heat exchanger is connected between mouth and the gas outlet of pressure-air compressor, the low-pressure air is calmed the anger The heated passage of air-water heat exchanger is connected between machine, pressure-air compressor, it is described to give water input system delivery port connection air water Steam generator system, waste heat boiler are supplied water after the heating passage of heat exchanger.
2. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 1 recycles, It is characterized in that:Condenser, water pump, oxygen-eliminating device, the booster water pump for including being sequentially connected in series by pipeline to water input system, The discharge outlet of the waste heat boiler is connected between water pump, oxygen-eliminating device by pipeline, and feedwater is set between the water pump, oxygen-eliminating device The water inlet of input system, the water inlet to water input system connect water source, the water inlet of the condenser by moisturizing pipeline The discharge outlet of steam turbine is connected by pipeline, the delivery port of the booster water pump is the delivery port to water input system.
3. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 1 recycles, It is characterized in that:The low-pressure air compressor, pressure-air compressor, turbine a, generator a power connectors, and together successively Step rotates;The synthesis flue gas compressor, turbine b, steam turbine, generator b power connectors, and synchronous axial system successively.
4. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 1 recycles, It is characterized in that:The steam generator system includes boiler body, and the boiler body has cyclone dust removal room, furnace chamber a, furnace chamber b, institute The lower end for stating cyclone dust removal room sets smoke inlet, and the smoke inlet of cyclone dust removal room is connected with refuse gasification CIU, revolves Wind dirt pocket upper end is the 3rd exhanst gas outlet, and the 3rd exhanst gas outlet of cyclone dust removal room upper end connects with furnace chamber a upper end, described Furnace chamber a, furnace chamber b lower end connection, the upper end of the furnace chamber b set waste gas outlet, in the cyclone dust removal room circumferentially arranged with Water-cooling wall in a ring, described superheater is provided with the furnace chamber a, evaporator, the top of boiler body are provided with furnace chamber b End sets described drum, and the cyclone dust removal room, furnace chamber a, furnace chamber b are respectively positioned on below drum, and the drum is provided with carbonated drink Import, drum is interior to be provided with water separator, and for separating steam water interface, drum passes through the first down-comer and connects water-cooling wall Water inlet, the water isolated for exporting water separator, drum connect the water inlet of evaporator by the second down-comer, use In the water that output water separator is isolated, the water-cooling wall, the venthole of evaporator connect drum by steam pipe respectively Air intake, for the high-temperature steam that flows back.
5. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 4 recycles, It is characterized in that:The upper end that the boiler body has furnace chamber c, the furnace chamber c connects with the waste gas outlet of furnace chamber b upper ends, stove Room c lower end sets Waste gas outlet, the Waste gas outlet connection flue gas purification system of the furnace chamber c, the gas cleaning system Thick cleaning system that system includes being sequentially connected, booster fan, fine purifiation deduster, flue gas after purification feed synthesis flue gas and calmed the anger Machine.
6. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 5 recycles, It is characterized in that:The thick cleaning system includes aeration tower and deduster, and the fine purifiation deduster uses Lei Shi Venturi scrubbings System, including Venturi scrubber and cyclone separator, the Waste gas outlet of the aeration tower connection furnace chamber c, aeration tower outlet Deduster is connected, then makees deep purifying into fine purifiation deduster after being pressurized by booster fan.
7. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 5 recycles, It is characterized in that:Economizer is provided with the furnace chamber c, the water inlet of the economizer connects with the delivery port to water input system It is logical, the delivery port of the economizer and the carbonated drink inlet communication of drum.
8. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 5 recycles, It is characterized in that:The refuse gasification CIU includes incinerator, circulation air feed system, and the incinerator includes Grate, and feed hopper, gasification furnace and the incinerator set gradually on grate along feedstock direction, the rear of gasification furnace is gasification The slag mouth of stove, incinerator are located at the front lower place of gasification furnace slag mouth, and the rear of incinerator is the slag notch of incinerator, the stove Frame is provided with garbage pusher device, and the garbage pusher device is located at the lower section of feed hopper, for the rubbish in feed hopper to be pushed into gas Change in stove, the lower section of gasification furnace moving hearth and incinerator moving hearth are respectively arranged below with least one be independently arranged Air compartment, windrow seal section, the grate part between the gasification furnace and incinerator are provided between the feed hopper, gasification furnace On leave transition slag section, the transition slag section is provided with residue pusher, for the rubbish residue that will be fallen in gasification furnace It is pushed into incinerator, isolating door to be opened/closed is provided with the transition slag section, the isolating door is used for gasification furnace, burnt Stove separates;The gasification furnace, incinerator include furnace shell, moving hearth respectively, and the forward and backward side of the gasification furnace passes through windrow respectively Seal section, the sealing of transition slag section, the transition slag section isolation gasification furnace, incinerator, make gasification furnace, incinerator mutually only It is vertical;The gasification furnace, incinerator set secondary air feed mouth, institute respectively respectively in arching upward shape on the face arch of the gasification furnace, rear arch The vault for stating gasification furnace sets the first exhanst gas outlet, and the smoke inlet of the cyclone dust removal room connects with the first exhanst gas outlet, institute The vault for stating incinerator sets the second exhanst gas outlet, and igniting combustion supporting hole is respectively equipped with the gasification furnace, incinerator;
The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, and the inlet end of the dust arrester passes through pipe Road is connected with the second exhanst gas outlet, and the outlet side of the dust arrester is connected by pipeline with the inlet end of the first blower fan, described The outlet side of first blower fan connects the house steward of the first manifold, the branch pipe of first manifold respectively with gasification furnace moving hearth Each air compartment, each secondary air feed mouth on gasification furnace and the connection of the smoke inlet of cyclone dust removal room of side, first discrimination First regulating valve is set respectively on each branch pipe of pipe, the air inlet and atmosphere of second blower fan, second blower fan Gas outlet connects the house steward of the second manifold, the branch pipe of second manifold respectively with each First air below incinerator moving hearth The inlet end of room and dust arrester, outlet side are connected, and the second regulating valve, institute are set respectively on each branch pipe of second manifold State cyclone dust removal room and be provided with some combustion air air feed mouths, some combustion air air feed mouths are located at smoke inlet, the 3rd flue gas Between outlet, in addition to the 3rd manifold, the house steward of the 3rd manifold connect with the gas outlet of the second blower fan, the 3rd manifold Each branch pipe connected respectively with some combustion air air feed mouths, the 3rd regulating valve is set respectively on each branch pipe of the 3rd manifold.
9. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 8 recycles, It is characterized in that:Be provided with common slag notch below the furnace chamber a, furnace chamber b, the lower end of the cyclone dust removal room provided with to The taper slag notch that lower radius diminishes, the common slag notch, taper slag notch connect with the burner hearth of gasification furnace respectively.
10. refuse gasification combustion gas and steam turbine combined generating system that high-moisture gas according to claim 8 recycles, It is characterized in that:Air preheater, the air inlet of the outlet side connection air preheater of second blower fan are provided with the furnace chamber c Mouthful, the gas outlet of air preheater connects the house steward of the second manifold.
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