CN106224972A - The refuse gasification combustion gas of high-moisture gas recycling and steam turbine combined generating system - Google Patents

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

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Publication number
CN106224972A
CN106224972A CN201610801204.4A CN201610801204A CN106224972A CN 106224972 A CN106224972 A CN 106224972A CN 201610801204 A CN201610801204 A CN 201610801204A CN 106224972 A CN106224972 A CN 106224972A
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China
Prior art keywords
gas
air
connects
outlet
water
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CN201610801204.4A
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CN106224972B (en
Inventor
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 Sanfeng Environment Group Co ltd
Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/12—Heat utilisation in combustion or incineration of waste

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention discloses refuse gasification combustion gas and the steam turbine combined generating system of a kind of high-moisture gas recycling, including refuse gasification system, steam generator system, electricity generation system, electricity generation system includes blender, air compressor, synthesis flue gas compressor, synthesis smoke combustion room, turbine a, turbine b, steam turbine, electromotor a, electromotor b, waste heat boiler, the gas outlet parallel connection synthesis gas vapour gas heat exchanger of turbine a, air vapour gas heat exchanger add the passage of heat, reconnect the air inlet of recirculation blower, the Waste gas outlet of waste heat boiler is sequentially connected with recirculation blower, mixer/separator, low-pressure air compressor, the heated passage of air-water heat exchanger is connected between pressure-air compressor.Using refuse gasification combustion gas and steam turbine combined generating system that this high-moisture gas recycles, large-scale rubbish continuous gasification processes, and garbage treatment quantity is bigger, and the organic efficiency of heat is high, it is possible to efficiently reduce pollutant emission and CO2 discharge.

Description

The refuse gasification combustion gas of high-moisture gas recycling and steam turbine combined generating system
Technical field
The invention belongs to solid waste incineration Treatment and recovery processing technology field, particularly relate 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..Conventional in garbage disposal In technology, it is obvious that burning disposal has reduced training, innoxious thoroughly, occupation of land amount is little, and waste heat energy is obtained by, and secondary pollution is few Etc. advantage, meet the strategic requirement of China's sustainable development.But along with both at home and abroad environmental requirement being improved constantly, 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, primarily now using all kinds of incineration technology especially for domestic rubbish, the industrialization widely of gasification burning technology will The technological innovation bringing domestic garbage disposal industry is regenerated.
For many years, China's scientific research to the gasification burning technology such as biomass, rubbish, it is in progress a lot of, the base of laboratory Plinth research is a lot, also has applied research, such as: rotary kiln type, the vertical and destructive gasifying of fluidized bed type or temperature gasification and high melt skill Art etc..But Technique Popularizing application is upper or there is a definite limitation, raw material type, garbage treatment quantity, secondary pollution control and economical Benefits etc. are principal elements.
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, wherein has and uses mechanical type backstepping fire grate, forwards fire grate or combined fire grate in body of heater, also adopt With the fire grate such as chain-plate type and drum-type.In boiler plant, it is a lot of that boiler reclaims heat methods, technology maturation；Thermal source kind Class is the most, such as: the thermals source such as solar energy, smelting furnace waste heat, coal furnace, fluid bed, fixed bed, rotary kiln, utilizes boiler to reclaim heat Amount, be used for generating electricity, heat supply, heating etc..
In sum, typical gasification burning and boiler plant technology maturation, it is respectively arranged with himself advantage, but actual in China Application needs solve problem and shortage:
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.In flue gas after simultaneously burning, fly ash content is higher, and collecting ash is heavier, deashing repair and maintenance Cycle is short.
2. being on the increase along with refuse production, sanitary fill such as mountain, garbage treatment quantity must be effectively improved, Could meeting the market requirement.
3., in the face of strict pollutant emission requirement, secondary pollution controls the key problem being technically need to solve.
4., in order to effectively increase economic efficiency, in rubbish heat treatment process, the organic efficiency of heat needs to improve.Existing Rubbish heat treatment technics generally use boiler to reclaim the high-temperature flue gas heat after waste incineration, produce steam and shift steam turbine onto and send out Electricity, whole transition heat efficiency losses is relatively big, processes identical quantity of refuse, relatively reduces thermal losses and raising heat exchanger effectiveness just may be used To improve the thermal efficiency.
The 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 progress control method (ZL 200880007113.7) thereof, double-fuel combustion-supporting type gas-steam combined cycle system System (ZL 200610062631.1), coal powder gas turbine generation system and the process of generation coal powder two-phase flow fuel (ZL200610062055.0), multiple row sectional drive combined type domestic garbage incinerator (ZL200710092508.9) and two-part The problem all referred in incinerator (ZL201010268376.2): be not bound with rubbish heat treatment mode method, and The problems such as the secondary pollution control of rubbish heat treatment, smoke components complexity；Conventional garbage heat treatment thermal chemical reaction is anti-with oxidation Should be main, reduction reaction assists, and is easily generated secondary pollution, and burned oxygen quotient is big, and First air, secondary wind infeed amount are big, In flue gas, dust content is higher, affects heat reclaiming system and smoke processing system relatively big, easy dust stratification, and exhaust gas volumn is relatively big, Relative reduction thermal conversion efficiency；Refuse gasification synthesizes the deep purifying problem of flue gas after burning, need to synthesize flue gas cleannes Meet gas turbine requirement, and the application of refuse gasification burning-gas and steam turbine combined cycle generation；Rubbish heat treatment The innovation of mode, reduces exhaust gas volumn, changes flue gas composition, and chemical reaction environment becomes reduction reaction, the relative raising of the thermal efficiency.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of transition heat efficiency losses is less, heat Organic efficiency is higher, and pollutant and CO2 discharge refuse gasification combustion gas and the steam turbine associating of lower high-moisture gas recycling Electricity generation system.
The object of the present invention is achieved like this:
The refuse gasification combustion gas of a kind of high-moisture gas recycling and steam turbine combined generating system, burn including refuse gasification Burning system, steam generator system, electricity generation system, described steam generator system has drum, superheater, described 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, electromotor a, electromotor 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 give water input system, the sidewall of described blender is provided with the first entrance, the second entrance, The bottom of described blender is provided with outlet, and the top of described blender is provided with venthole, and the first entrance of described blender is even Connecing the saturated vapor outlet of drum, the second entrance of described blender connects the gas outlet of pressure-air compressor, described high pressure The air inlet of air compressor connects the gas outlet of low-pressure air compressor, the air inlet of described low-pressure air compressor and air Connection, the outlet of described blender connects the water inlet of drum, and the venthole of described blender connects the air intake of superheater, The venthole output high pressure superheated steam of described superheater, the venthole of described superheater connects the air inlet of turbine a, described Turbine a is connected with electromotor a power, and high pressure superheated steam promotes turbine a generating, the air inlet of described synthesis flue gas compressor Mouth connects the Waste gas outlet of steam generator system, the high pressing that the gas outlet output steam generator system of synthesis flue gas compressor has not utilized Become flue gas, the air inlet of described synthesis smoke combustion room respectively connect synthesis the gas outlet of flue gas compressor, superheater go out vapour Mouthful, by high pressure superheated steam and the input synthesis smoke combustion indoor mixed combustion of high-pressure synthesis flue gas, synthesis smoke combustion room Gas outlet connects the air inlet of turbine b, and described turbine b is connected with electromotor b power, and high-temperature flue gas promotes turbine b to send out Electricity, the gas outlet of turbine b connects waste heat boiler, and the venthole of described waste heat boiler connects steam turbine, described steam turbine with send out Motor b power connects, the superheated steam pushing turbine generating that waste heat boiler is discharged, the discharge outlet of described waste heat boiler, steamer The discharge outlet of machine connects respectively to the water inlet of water input system；
What the gas outlet of described turbine a connected synthesis gas vapour gas heat exchanger respectively adds the passage of heat, air vapour gas heat exchanger Add the passage of heat, synthesis gas vapour gas heat exchanger add the passage of heat, air vapour gas heat exchanger add passage of heat parallel connection after reconnect again The air inlet of circulating fan, the Waste gas outlet of described waste heat boiler connects the air inlet of recirculation blower, recirculation blower Gas outlet connects mixer/separator, and described mixer/separator isolates nitrogen purge, and residual gas input refuse gasification burns system Unite as gasifying agent, between the air inlet of described synthesis smoke combustion room and the gas outlet of synthesis flue gas compressor, be connected synthesis gas The heated passage of vapour gas heat exchanger, is connected air between the second entrance and the gas outlet of pressure-air compressor of described blender The heated passage of vapour gas heat exchanger, connects being subject to of air-water heat exchanger between described low-pressure air compressor, pressure-air compressor The passage of heat, described connect adding of air-water heat exchanger to water input system outlet and supplies steam generator system, waste heat boiler after the passage of heat Water.
Further, described include being sequentially connected in series by pipeline to water input system condenser, water pump, oxygen-eliminating device, increasing Water pump, the discharge outlet of described waste heat boiler is connected between water pump, oxygen-eliminating device by pipeline, between described water pump, oxygen-eliminating device Arrange to the water inlet of water input system, connect water source, described condenser to the water inlet of water input system by moisturizing pipeline Water inlet by pipeline connect steam turbine discharge outlet, the outlet of described booster water pump is to the water outlet of water input system Mouthful.
The steam that steam output device can not utilized by condenser is all converted to water, and absorbs the heat of steam release Amount, the Main Function of oxygen-eliminating device is exactly the oxygen removing in boiler feedwater with it and other gas, it is ensured that the quality of feedwater, increases Water pump can improve hydraulic pressure, it is ensured that to the water supply capacity of 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, described low-pressure air compressor, pressure-air compressor, turbine a, electromotor a power successively are even Connect, and synchronous axial system；Described synthesis flue gas compressor, turbine b, steam turbine, electromotor b power successively connect, and synchronize to turn Dynamic.
Further, described steam generator system includes that boiler body, described boiler body have cyclone dust removal room, furnace chamber a, stove Room b, the lower end of described cyclone dust removal room arranges smoke inlet, and the smoke inlet of cyclone dust removal room is with refuse gasification CIU even Connecing, upper end, cyclone dust removal room is the 3rd exhanst gas outlet, and the 3rd exhanst gas outlet of upper end, cyclone dust removal room connects with the upper end of furnace chamber a Logical, described furnace chamber a, the lower end connection of furnace chamber b, the upper end of described furnace chamber b arranges waste gas outlet, and described cyclone dust removal indoor are along week Being provided with described superheater in the water-cooling wall being provided with ringwise, described furnace chamber a, be provided with vaporizer in furnace chamber b, boiler is originally The top of body arranges described drum, and described cyclone dust removal room, furnace chamber a, furnace chamber b are respectively positioned on below drum, and described drum sets Having soda pop import, be provided with water separator in drum, be used for separating steam water interface, drum connects water by the first down-comer The water inlet of cold wall, is used for exporting the isolated water of water separator, and drum connects entering of vaporizer by the second down-comer The mouth of a river, is used for exporting the isolated water of water separator, and described water-cooling wall, the venthole of vaporizer are connected by steam pipe respectively The air intake of drum, is used for the high-temperature steam that refluxes.
Flue gas in order to discharge furnace chamber c carries out harmless treatment, it is preferable that described boiler body has furnace chamber c, described The upper end of furnace chamber c connects with the waste gas outlet of furnace chamber b upper end, and the lower end of furnace chamber c arranges Waste gas outlet, and described furnace chamber c's is useless Gas floss hole connects flue gas purification system, thick cleaning system that described flue gas purification system includes being sequentially connected with, booster fan, essence Washing cleaner unit, the flue gas after purification feeds synthesis flue gas compressor.
Preferably, described thick cleaning system includes aeration tower and cleaner unit, and described fine purifiation cleaner unit uses Lei Shi venturi Washing system, including Venturi scrubber and cyclone separator, described aeration tower connects the Waste gas outlet of furnace chamber c, aeration tower Outlet connects cleaner unit, then is made deep purifying by entering fine purifiation cleaner unit after booster fan supercharging.
Thick cleaning system can remove the impurity of big particle diameter, dust, and fine purifiation cleaner unit can remove steam, micropowder dirt etc., Meet gas turbine to combustion gas cleannes requirement.
Flue gas in order to discharge furnace chamber b carries out further heat recovery, improves heat recovery efficiency, further Ground, is provided with economizer in described furnace chamber c, the water inlet of described economizer connects with to the outlet of water input system, described joint The outlet of hot device and the soda pop inlet communication of drum.
Further, described refuse gasification CIU includes incinerator, circulation air feed system, described gasification burning Stove includes grate, and feed hopper, gasification furnace and the incinerator set gradually on grate, the rear of gasification furnace along feedstock direction For the cinder notch that falls of gasification furnace, incinerator is positioned at gasification furnace and falls the front lower place of cinder notch, and the rear of incinerator is the slag notch of incinerator, Described grate is provided with garbage pusher device, and described garbage pusher device is positioned at the lower section of feed hopper, for by the rubbish in feed hopper Push in gasification furnace, the lower section of gasification furnace moving hearth and incinerator moving hearth to be respectively arranged below with at least one independent The air compartment arranged, is provided with windrow seal section, the stove between described gasification furnace and incinerator between described feed hopper, gasification furnace Leaving transition in frame part to fall slag section, the described transition slag section that falls is provided with residue pusher, for the rubbish that will fall in gasification furnace Rubbish residue pushes in incinerator, and described transition falls and is provided with isolating door to be opened/closed in slag section, and described isolating door is for will gasification Stove, incinerator cut off；Described gasification furnace, incinerator include furnace shell, moving hearth respectively, and the forward and backward side of described gasification furnace is respectively By windrow seal section, transition fall slag section seal, described transition fall slag section isolation gasification furnace, incinerator, make gasification furnace, incinerator Separate；Described gasification furnace, incinerator, respectively in the shape that arches upward, the face arch of described gasification furnace, rear arch are respectively provided with secondary and supply Air port, the vault of described gasification furnace arranges the first exhanst gas outlet, the smoke inlet of described cyclone dust removal room and the first exhanst gas outlet Connection, the vault of described incinerator arranges the second exhanst gas outlet, described gasification furnace, incinerator is respectively equipped with igniting combustion supporting hole；
Described circulation air feed system includes dust arrester, the first blower fan, the second blower fan, and the inlet end of described dust arrester leads to Piping and the second exhanst gas outlet connect, and the outlet side of described dust arrester is connected by the inlet end of pipeline and the first blower fan, The outlet side of described first blower fan connects the house steward of the first manifold, the arm of described first manifold respectively with gasification furnace moving hearth Lower section each air compartment, a gasification furnace on each secondary for the smoke inlet connection of air port and cyclone dust removal room, described the The first regulation valve, the air inlet of described second blower fan and atmosphere, described second wind it is respectively provided with on each arm of one manifold The gas outlet of machine connects the house steward of the second manifold, the arm of described second manifold respectively with incinerator moving hearth below each one Secondary air compartment and the inlet end of dust arrester, outlet side connection, each arm of described second manifold is respectively provided with the second regulation Valve, described cyclone dust removal room is provided with some combustion airs for air port, described some combustion airs for air port be positioned at smoke inlet, the 3rd Between exhanst gas outlet, also include that the 3rd manifold, the described house steward of the 3rd manifold connect with the gas outlet of the second blower fan, the described 3rd Each arm of manifold connects for air port with some combustion airs respectively, and each arm of the 3rd manifold is respectively provided with the 3rd regulation valve.
In order to discharge furnace chamber a, furnace chamber b, the waste residue of cyclone dust removal indoor flue gas deposition generation, and prevent waste residue effusion from producing Pollute, it is preferable that being provided with common slag notch below described furnace chamber a, furnace chamber b, the lower end of described cyclone dust removal room is provided with from upper The taper slag notch diminished to lower radius, this common slag notch, taper slag notch connect with the burner hearth of gasification furnace respectively.
Flue gas in order to discharge furnace chamber b carries out further heat recovery, improves heat recovery efficiency, it is preferable that Being provided with air preheater in described furnace chamber c, the outlet side of described second blower fan connects the air inlet of air preheater, air preheat The gas outlet of device connects the house steward of the second manifold.
Owing to have employed technique scheme, there is advantages that
Present invention employs pressure-air that air compressor exports by blender, the saturated vapor of drum output mixes Closing, export high pressure superheated steam after superheater, high pressure superheated steam promotes turbine a generating, and the present invention uses synthesis flue gas The high-pressure synthesis flue gas that compressor output steam generator system has not utilized, the high pressure superheated steam of superheater output and high-pressure synthesis cigarette Gas input synthesis smoke combustion indoor mixed combustion, output high-temperature flue gas promotes turbine b generating, and the gas outlet of turbine b is even Connecing waste heat boiler, the discharge outlet of waste heat boiler connects to water input system, and the superheated steam that described waste heat boiler is discharged promotes vapour Turbine generates electricity, and the flue gas not utilized taking full advantage of steam generator system carries out combined cycle generation；The present invention is also by air Vapour gas heat exchanger, synthesis gas vapour gas heat exchanger reclaim the heat that turbine a has not utilized, and utilize air-water heat exchanger to reclaim feedwater defeated Enter the amount of residual heat of system, utilize air-water heat exchanger, air vapour gas heat exchanger to preheat air, utilize synthesis gas vapour gas heat exchanger Preheat synthesis gas, substantially increase heat recovery efficiency；Waste heat boiler, the discharge outlet of steam turbine connect to water input system, institute State and to water input system, steam generator system, waste heat boiler are supplied water, 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 to reclaim H2O,CO2,O2System is burned as refuse gasification Deng gas The gasifying agent of system, pyrolysis, gasification to rubbish are favourable, relatively reduce CO2 discharge, and gasifying agent participates in refuse gasification CIU Learn reaction and produce more CO, H2；Greatly reducing the discharge capacity of waste gas, transition heat efficiency losses is less, the recovery effect of heat Rate is higher.
The water-cooling wall of annular is arranged on cyclone dust removal room by this steam generator system, and synthesis gas is in cyclone dust removal Indoor Combustion more For fully, the temperature that burning produces is higher, relatively reduces thermal losses and improves heat exchanger effectiveness.This steam generator system reclaims Origin of heat enters cyclone dust removal room in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas, simultaneously to whirlwind Tangential air-supplied combustion-supporting flammable synthesis gas in dirt pocket, flue gas sequentially passes through cyclone dust removal room, furnace chamber a, furnace chamber b, joint heat Device and air preheater.Recycling economizer preheating condensed water, preheating condensed water enters boiler part, condensed water at water-cooling wall and Heating in vaporizer, form saturated vapor and enter drum, after steam-water separation, saturated vapor enters superheater, is again thermally formed Vapours exports, and is used for generating electricity.Present inventive concept is novel, utilizes cyclone-burning method, decreases fly ash content in flue gas；Synthesis Gas firing temperature is high, and gas residence time is long, and pollutant are effectively decomposed, and reduces pollutant emission, it is achieved that rubbish is continuous Synthesis gas burning disposal after gasification and heat recovery and utilization.
The gasification furnace of incinerator, incinerator are provided separately, and the vault of gasification furnace arranges the first exhanst gas outlet, incinerator Vault the second exhanst gas outlet is set, be beneficial to process flue gas respectively according to the difference of flue gas quality, be conducive to flue gas is removed simultaneously Dirt, it is provided that the flue gas of higher quality, the utilization rate making flue gas is higher, and the waste residue of discharge is less.
Second blower fan blasts air and provides First air for incinerator and provide homoiothermic to supply for cyclone separator, the first blower fan Wind, by the second regulation valve regulation wind supply quantity on corresponding pipeline, makes incinerator residue fully burn；Then, the first blower fan is taken out Take the flue gas of incinerator, after homoiothermic and cyclone collection flying dust, form the flue gas supply gasification furnace of certain pressure First air and secondary wind, by the first regulation valve regulation wind supply quantity on corresponding pipeline, in making gasification furnace, rubbish produces gasification, gas Change stove and be contained within the flue gas of a certain amount of synthesis gas, discharge from the first exhanst gas outlet, enter cyclone dust removal room processing links, the first wind The unnecessary flue gas of machine extraction also simultaneously enters cyclone dust removal room, takes full advantage of the high-temperature flue gas that incinerator is discharged, and improves energy The utilization rate of amount, cyclone dust removal room provides 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 experience dry, gasification and the stage that burns of residue on stoker fired grate, adapts to China's house refuse aqueous The characteristics such as amount height, complicated component, improve the energy conversion efficiency in garbage processing procedure and reduce pollutant emission in flue gas Amount, effectively prevents secondary pollution, and is capable of large-scale rubbish continuous gasification burning disposal, it is ensured that refuse gasification burns effect Fruit and lime-ash clinker ignition loss, relatively reduce thermal losses and improve heat exchanger effectiveness, improve the thermal efficiency.
Accompanying drawing explanation
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 the schematic top plan view of Fig. 5；
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 is grate, and 102 is feed hopper, and 103 is gasification furnace, and 104 is incinerator, and 105 is stove Bed, 106 is garbage pusher device, and 107 is an air compartment, and 108 is windrow seal section, and 109 fall slag section for transition, and 110 push away for residue Glassware, 111 is isolating door, and 112 is the first exhanst gas outlet, and 113 is the second exhanst gas outlet, and 114 is igniting combustion supporting hole, and 115 is two Secondary for air port, 116 is slag notch, and 117 is the cinder notch that falls；
201 is dust arrester, and 202 is the first blower fan, and 203 is the second blower fan, and 204 is the first manifold, and 205 is the second discrimination Pipe, 206 is the 3rd manifold, and 207 is the first regulation valve, and 208 is the second regulation valve, and 209 is the 3rd regulation valve；
3 is cyclone dust removal room, and 301 is dirt pocket igniting combustion supporting hole, and 302 is taper slag notch, and 303 is smoke inlet, 304 Being the 3rd exhanst gas outlet, 305 supply air port for combustion air；
4 is boiler body, and 402 is furnace chamber a, and 403 is furnace chamber b, and 404 is furnace chamber c, and 405 is water-cooling wall, and 406 is superheater, 407 is vaporizer, and 408 is drum, and 409 is the first down-comer, and 410 is the second down-comer, and 411 is steam turbine, and 412 is defeated for feedwater Entering system, 413 is condenser, and 414 is water pump, and 415 is oxygen-eliminating device, and 416 is booster water pump, and 417 is moisturizing pipeline, and 418 is joint Hot device, 419 is flue gas purification system, and 420 is aeration tower, and 421 is cleaner unit, and 422 is booster fan, and 423 is fine purifiation cleaner unit, 424 is air preheater.
5 is electricity generation system, and 501 is blender, and 502 is electromotor a, and 503 is low-pressure air compressor, and 504 is synthesis cigarette Air pressure mechanism of qi, 505 is synthesis smoke combustion room, and 506 is turbine a, and 507 is waste heat boiler, and 508 is electromotor b, and 509 is whirlpool Turbine b, 510 is air-water heat exchanger, and 511 is mixer/separator, and 512 is air vapour gas heat exchanger, and 513 is synthesis gas vapour gas heat exchange Device, 514 is pressure-air compressor, and 515 is recirculation blower.
Detailed description of the invention
Seeing Fig. 1, the refuse gasification combustion gas recycled for high-moisture gas and the one of steam turbine combined generating system are relatively Good embodiment, including refuse gasification CIU, steam generator system, electricity generation system 5, described steam generator system has drum 408, mistake Hot device 406.
Seeing Fig. 2, described electricity generation system 5 includes blender 501, low-pressure air compressor 503, pressure-air compressor 514, synthesis flue gas compressor 504, synthesis smoke combustion room 505, turbine a506, turbine b509, steam turbine 411, generating Machine a502, electromotor 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 give water input system 412, further, described low-pressure air compressor 503, high pressure are empty Air pressure mechanism of qi 514, turbine a506, electromotor a502 power successively connect, and synchronous axial system；Described synthesis flue gas compressor 504, turbine b509, steam turbine 411, electromotor b508 power successively connect, and synchronous axial system.
The sidewall of described blender 501 is provided with the first entrance, the second entrance, and the bottom of described blender 501 is provided with out The mouth of a river, the top of described blender 501 is provided with venthole, and the first entrance of described blender 501 connects the saturated vapor of drum Outlet, the second entrance of described blender 501 connects the gas outlet of pressure-air compressor 514, described pressure-air compressor The air inlet of 514 connects the gas outlet of low-pressure air compressor 503, the air inlet of described low-pressure air compressor 503 and air Connection, the outlet of described blender 501 connects the water inlet of drum, and the venthole of described blender 501 connects superheater Air intake, the venthole output high pressure superheated steam of described superheater, the venthole of described superheater connects turbine a506's Air inlet, described turbine a506 is connected with electromotor a502 power, and high pressure superheated steam promotes turbine a506 generating, described The air inlet of synthesis flue gas compressor 504 connects the Waste gas outlet of steam generator system, and the gas outlet of synthesis flue gas compressor 504 is defeated Going out the high-pressure synthesis flue gas that steam generator system has not utilized, the air inlet of described 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 Burning mixed combustion in room 505, the gas outlet of synthesis smoke combustion room 505 connects the air inlet of turbine b509, described turbine B509 is connected with electromotor b508 power, and high-temperature flue gas promotes turbine b509 generating, and the gas outlet of turbine b509 connects remaining Heat boiler 507, the venthole of described waste heat boiler 507 connects steam turbine 411, described steam turbine 411 and electromotor b508 power Connecting, the superheated steam pushing turbine 411 that waste heat boiler 507 is discharged generates electricity, the discharge outlet of described waste heat boiler 507, steamer The discharge outlet of machine 411 connects respectively to the water inlet of water input system 412；
What the gas outlet of described turbine a connected synthesis gas vapour gas heat exchanger 513 respectively adds the passage of heat, air vapour gas heat exchange Device 512 add the passage of heat, synthesis gas vapour gas heat exchanger 513 add the passage of heat, air vapour gas heat exchanger 512 to add the passage of heat in parallel The air inlet of rear reconnection recirculation blower 515, the Waste gas outlet of described waste heat boiler connects the air inlet of recirculation blower 515 Mouthful, the gas outlet of recirculation blower 515 connects mixer/separator 511, and in the present embodiment, mixer/separator 511 uses membrance separation Device, described mixer/separator 511 isolates nitrogen purge, and residual gas input refuse gasification CIU is as gasifying agent, institute State and be connected synthesis gas vapour gas heat exchanger 513 between air inlet and the gas outlet of synthesis flue gas compressor of synthesis smoke combustion room Heated passage, is connected air vapour gas heat exchanger between the second entrance and the gas outlet of pressure-air compressor of described blender The heated passage of 512, connects being heated of air-water heat exchanger 510 logical between described low-pressure air compressor, pressure-air compressor Road, described connect adding of air-water heat exchanger 510 to water input system outlet and supplies steam generator system, waste heat boiler after the passage of heat Water.
Further, described include being sequentially connected in series by pipeline to water input system 412 condenser 413, water pump 414, Oxygen-eliminating device 415, booster water pump 416, the discharge outlet of described waste heat boiler 507 is connected to water pump 414, oxygen-eliminating device 415 by pipeline Between, arrange between described water pump 414, oxygen-eliminating device 415 to the water inlet of water input system 412, to entering of water input system 412 The mouth of a river connects water source by moisturizing pipeline 417, and the water inlet of described condenser 413 connects the draining of steam turbine 411 by pipeline Mouthful, the outlet of described booster water pump 416 is to the outlet of water input system 412.
Seeing Fig. 3, in the present embodiment, steam generator system includes that boiler body 4, described boiler body 4 have cyclone dust removal room 3, furnace chamber a402, furnace chamber b403, furnace chamber c404.
Seeing Fig. 5, Fig. 6, the lower end of described cyclone dust removal room 3 arranges smoke inlet 303, the cigarette of described cyclone dust removal room 3 Gas entrance 303 is connected with the first exhanst gas outlet 112 of gasification furnace 103 by pipeline, and upper end, cyclone dust removal room 3 is that the 3rd flue gas goes out Mouth 304, described smoke inlet the 303, the 3rd exhanst gas outlet 304 is positioned at the opposition side of cyclone dust removal room 3 circumferential wall, cyclone dust removal room The top of 3 arranges dirt pocket igniting combustion supporting hole 301.In order to make flue gas, combustion air be sufficiently mixed in cyclone dust removal room 3, burn After discharge from the 3rd exhanst gas outlet 304, described cyclone dust removal room 3 is provided with some combustion airs for air port 305, described some combustion-supporting Wind supplies air port 305 between smoke inlet the 303, the 3rd exhanst gas outlet 304.Described smoke inlet the 303, the 3rd exhanst gas outlet 304, combustion air is radially or tangentially arranged along cyclone dust removal room 3 circumferential wall for air port 305.3rd cigarette of upper end, cyclone dust removal room 3 Gas outlet 304 connects with the upper end of furnace chamber a402, described furnace chamber a402, the lower end connection of furnace chamber b403, described furnace chamber b403's Upper end arranges waste gas outlet, and the lower end of described cyclone dust removal room 3 is provided with the taper slag notch 302 that radius from top to bottom diminishes, should Taper slag notch 302 connects with the burner hearth of gasification furnace 103.It is provided with common slag notch below described furnace chamber a402, furnace chamber b403, This common slag notch connects with the burner hearth of gasification furnace 103.In the present embodiment, this common slag notch and taper slag notch 302 all afterbody changeover portions with gasification furnace 103 burner hearth connect.
It is circumferentially with water-cooling wall 405 ringwise along inwall in described cyclone dust removal room 3, is provided with in described furnace chamber a402 Superheater 406, is provided with vaporizer 407 in furnace chamber b403, the top of boiler body 4 arranges drum 408, described cyclone dust removal room 3, furnace chamber a402, furnace chamber b403 are respectively positioned on below drum 408, and described drum 408 is provided with soda pop import, are used for inputting soda pop and mix Compound, is provided with water separator in drum 408, is used for separating steam water interface, and drum 408 is by the first down-comer 409 even The water inlet of water receiving cold wall 405, is used for exporting the isolated water of water separator, and drum 408 is by the second down-comer 410 even Connect the water inlet of vaporizer 407, be used for exporting the isolated water of water separator, described water-cooling wall 405, vaporizer 407 Venthole connects the air intake of drum 408 respectively by steam pipe, is used for the high-temperature steam that refluxes, the saturated vapor of described drum 408 Export the air intake being connected superheater 406 by pipeline, for the high-temperature steam of backflow is inputted in superheater 406, described mistake The venthole output superheated steam of hot device 406.
The upper end of described furnace chamber c404 connects with the waste gas outlet of furnace chamber b403 upper end, and the lower end of furnace chamber c404 arranges waste gas Floss hole, is provided with economizer 418, the water inlet of described economizer 418 and the outlet of booster water pump 416 in described furnace chamber c404 Connection, the outlet of described economizer 418 and the soda pop inlet communication of drum 408.The Waste gas outlet of furnace chamber c404 connects cigarette Gas cleaning system 419, sees Fig. 4, and described flue gas purification system 419 includes thick cleaning system, the booster fan being sequentially connected with 422, fine purifiation cleaner unit 423, the flue gas after purification feeds synthesis flue gas compressor.Described thick cleaning system includes aeration tower 420 With cleaner unit 421, described fine purifiation cleaner unit 423 uses Lei Shi venturi scrubbing system, divides including Venturi scrubber and whirlwind From device, described aeration tower 420 connects the Waste gas outlet of furnace chamber c, and aeration tower 420 outlet connects cleaner unit 421, then by supercharging wind Enter fine purifiation cleaner unit 423 after machine 422 supercharging and make deep purifying.
See Fig. 7, Fig. 8, include incinerator and 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, gasification furnace 103 stove Bed lower section and incinerator 104 siege be respectively arranged below with two independent air compartments 107, described gasification furnace 103 Being respectively provided with secondary on face arch, rear arch and supply air port 115, the vault of described gasification furnace 103 arranges the first exhanst gas outlet 112, described The vault of incinerator 104 arranges the second exhanst gas outlet 113.
Incinerator includes grate 101, and set gradually along feedstock direction on grate 101 feed hopper 102, gas Changing stove 103 and incinerator 104, the rear of incinerator 104 is the slag notch 116 of incinerator 104, and described incinerator 104 is provided with Fall cinder notch 117, and the slag notch 116 of described incinerator 104 is positioned at incinerator and falls the underface of cinder notch 117, described in the cinder notch 117 that falls lead to Piping connects with the slag notch of dust arrester 201.This sealing structure is effective, can effectively hold minimizing pollutant discharge amount. The carbon-containing part of rubbish is mainly gasified by gasification furnace 103, and discharges flammable gasification flue gas and rubbish residue, incinerator 104 burn processing being substantially carried out carbon residue, and discharge innoxious lime-ash.The siege 105 of gasification furnace 103 and incinerator 104 is equal Using the stoker fired grate formula moving hearth 105 that segmentation independently drives, the fire grate of stoker fired grate formula moving hearth 105 is by travelling oven Row's plate forward laps with fixed grate plate, collects alternately and forms, and adjacent many groups moving grate plate is connected by pull bar, adopts Drive by a set of driving means.Stoker fired grate formula moving hearth 105 is as the carrier of conveying garbage, and its embodiment can be each Type moving hearth 105, such as chain-plate type, drum-type, multisection type fire grate system etc..
Described grate 101 is provided with garbage pusher device 106, and described garbage pusher device 106 is positioned at the lower section of feed hopper 102, For the rubbish in feed hopper 102 is pushed in gasification furnace 103, the lower section of gasification furnace 103 moving hearth 105 and incinerator 104 moving hearths 105 be respectively arranged below with at least one air compartment 107 being independently arranged, in the present embodiment, with gasification furnace The fire grate of air compartment 107 correspondence of 103 first halfs, driving means, as the dryer section of gasification furnace 103 siege 105, with gasification The latter half of fire grate of air compartment 107 correspondence of stove 103, driving means are as the gasification section of gasification furnace 103 siege 105.Gasification The dryer section of stove 103 siege 105, gasification section can be respectively adopted 1-2 independent air compartment 107 air feed, it is also possible to respectively Use 3-4 independent air compartment 107 air feed.Certainly, fire grate, driving means and an air compartment 107 also can not be correspondingly arranged, Preferably on regulation moving hearth 105, the bed of material moves and air distribution relation.Incinerator 104 can use 1-4 independent First air Room 107 air feed, burns rear lime-ash and gets rid of from slag notch, enter next step treatment process.
Being provided with windrow seal section 108 between described feed hopper 102, gasification furnace 103, garbage pusher device 106 work enters at position In windrow seal section 108, garbage raw material is put into from feed hopper 102 and is fallen, and garbage pusher device 106 retreats, then advances, the most Secondary pusher forms windrow at windrow seal section 108, makes gasification furnace 103 entrance be in windrow sealing state, strengthens gasification furnace 103 close Envelope effect, solves garbage pusher device 106 and the easy leakage problem of feed hopper 102.When needing complete prepurging to dispose all rubbish, Garbage pusher device 106 forward impelling half stroke again, is pushed completely into rubbish in gasification furnace 103, makes gasification furnace 103 entrance lose Windrow sealing effectiveness.Leave transition in grate 101 part between described gasification furnace 103 and incinerator 104 to fall slag section 109, institute State the transition slag section 109 that falls and be provided with residue pusher 110, for the rubbish residue fallen in gasification furnace 103 is pushed incinerator In 104, the transition slag section 109 that falls can be at windrow sealing state when piling up rubbish residue, strengthens gasification furnace 103 sealing effectiveness, Solve to go here and there between gasification furnace 103, incinerator 104 problem of wind.In the present embodiment, described transition falls, and be provided with in slag section 109 can The isolating door 111 of opening and closing, described isolating door 111 is for cutting off gasification furnace 103, incinerator 104.The furnace lifting initial stage or need control When altering wind between gasification furnace 103 processed and incinerator, close isolating door 111, stack a certain amount of residue when the slag section that falls and form windrow After sealing, isolating door 111 can be kept to open, the residue pusher 110 arranged with lower section is coordinated to use, continuous to realize rubbish Gasification burning processes.
The upper end of described gasification furnace 103, incinerator 104 upper end respectively in the shape that arches upward, the face arch of described gasification furnace 103 is Flat construction, or, the face arch of gasification furnace 103 is that rear end is inclined upwardly structure.The vault of described gasification furnace 103 arranges the first cigarette Gas outlet 112, the vault of described incinerator 104 arranges the second exhanst gas outlet 113, the arching upward of described gasification furnace 103 upper end, burns It is respectively equipped with igniting combustion supporting hole 114 on the arching upward of stove 104 upper end.Gasification flue gas is from first exhanst gas outlet the 112, second exhanst gas outlet 113 get rid of, and gasification furnace 103 furnace cavity is compared with traditional incinerator, relatively reduced；Forward and backward arch and moving hearth 105 Position relatively diminishes, and decreases the space that incinerator takies, and is also easier to insulation, decreases the amount of leakage of heat, beneficially rubbish Rubbish fully gasifies.Secondary it is respectively provided with for air port 115 on the face arch of described gasification furnace 103, rear arch.
Described circulation air feed system includes dust arrester the 201, first blower fan the 202, second blower fan 203, in the present embodiment, institute Stating dust arrester 201 is cyclone separator or hot precipitator 421, and described first blower fan 202 is high-temperature blower, described second Blower fan 203 is aerator.The inlet end of described dust arrester 201 is connected by pipeline and the second exhanst gas outlet 113, described dedusting The outlet side of device 201 is connected by the inlet end of pipeline and the first blower fan 202, and the outlet side of described first blower fan 202 connects The house steward of the first manifold 204, the arm of described first manifold 204 respectively with the lower section of gasification furnace 103 moving hearth each the most once Each secondary on air compartment 107, gasification furnace 103 connects for the smoke inlet 303 of air port 115 and cyclone dust removal room 3, and described first Being respectively provided with the first regulation valve 207 on each arm of manifold 204, the air inlet of described second blower fan 203 is with material pit air even Logical, the foul smell distributed in can absorbing material pit, the gas outlet of described second blower fan 203 connects the house steward of the second manifold 205, institute State the arm of the second manifold 205 respectively with incinerator 104 moving hearth below each air compartment 107 and dust arrester 201 Inlet end, outlet side connection, each arm of described second manifold 205 is respectively provided with the second regulation valve 208.Also include the 3rd Manifold 206, the house steward of described 3rd manifold 206 connects with the gas outlet of the second blower fan 203, each of described 3rd manifold 206 Pipe connects for air port 305 with some combustion airs respectively, and each arm of the 3rd manifold 206 is respectively provided with the 3rd regulation valve 209.Institute Being provided with air preheater 424 in stating furnace chamber c404, in the present embodiment, air preheater 424 is positioned at the downstream of economizer 418, The outlet side of described second blower fan 203 connects the air inlet of air preheater 424, and the gas outlet of air preheater 424 connects the The house steward of two manifolds 206, the described house steward of the 3rd manifold 206 connects with the gas outlet of air preheater 424.
Gasification furnace 103 First air is that the flue gas generation certain pressure of high-temperature blower extraction incinerator 104 blasts gasification furnace 103 In an air compartment 107 corresponding below stoker fired grate formula moving hearth 105, then sprayed by an air holes on moving hearth 105 It is shot through rubbish, gasifies, regulate wind supply quantity by the first regulation valve 207 on corresponding each arm.Gasification furnace 103 secondary wind Be high-temperature blower extraction incinerator 104 flue gas produce certain pressure blast gasification furnace 103 burner hearth, its spray-hole is arranged on gasification On stove 103 face arch and rear arch.Secondary it is provided with for air port 115, raising gasification efficiency, macromolecule in enhancing flue gas on forward and backward arch Substance decomposition.Have igniting combustion supporting hole 114 on rear arch, furnace lifting, baker and in stablizing gasification furnace 103 temperature use, by correspondence The first regulation valve 207 on each arm regulates wind supply quantity.The air inlet of described 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 of described second blower fan 203 connects the The house steward of two manifolds 205, the arm of described second manifold 205 respectively with incinerator 104 moving hearth 105 below each First air Room 107 and the inlet end of dust arrester 201, outlet side connection, each arm of described second manifold 205 is respectively provided with second Regulation valve 208.Incinerator 104 First air is that the air of certain pressure is blasted stoker fired grate formula moving hearth 105 times by aerator In the air compartment 107 that side is corresponding, then by an air holes spray penetration residue on moving hearth 105, carry out residual burning, Wind supply quantity is regulated by the first regulation valve 207 on corresponding each arm.The inlet end of dust arrester 201, the air intake of outlet side are Homoiothermic air feed, homoiothermic air feed is that the air of certain pressure is blasted incinerator 104 and exports (i.e. cyclone inlet) by aerator Carrying out homoiothermic, meanwhile, Cyclone outlet (i.e. high-temperature blower entrance) blasts further homoiothermic, by corresponding each arm First regulation valve 207 regulates wind supply quantity.
Circulation air feed system to the waste disposal method after stoker fired grate formula refuse gasification incinerator air feed, the method by with Lower step is carried out:
Step A, closedown stoker fired grate formula refuse gasification incinerator 1 and the gate of atmospheric vent, start machinery grate-type rubbish Rubbish incinerator 1, puts into feed hopper 102 by garbage raw material, and garbage pusher device 106 pusher back and forth will be from feed hopper 102 The garbage raw material fallen pushes the windrow seal section 108 between feed hopper 102, gasification furnace 103, makes windrow seal section 108 be formed Windrow sealing state, unnecessary rubbish falls into the moving hearth 105 of gasification furnace 103, and the moving hearth 105 of gasification furnace 103 works, Rubbish being conveyed into transition fall slag section 109, residue pusher 110 pusher back and forth, rubbish transition fallen in slag section 109 pushes away Entering in incinerator 104, the moving hearth 105 of incinerator 104 works conveying garbage, until rubbish is at gasification furnace 103, incinerator The moving hearth 105 of 104 is accumulated to required thickness: 0.6-0.8m, during baker, the rubbish piled up can protect mobile stove Bed 105, prevents scaling loss siege 105.Stopping 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, under the effect of start-up burner, gasification furnace 103 and incinerator 104 are carried out furnace lifting, Baker, treats that this process stabilization completes, and makes gasification furnace 103 and incinerator 104 burner hearth reach predetermined temperature 600-700 DEG C；Baker Purpose be the Natural Water in order to remove in lining and water of crystallization, in order to avoid rising too fast when going into operation due to furnace temperature, moisture content is a large amount of Expansion causes body of heater spalling, bubbling or deforms even furnace wall and collapse, and affects intensity and the service life of heating furnace furnace wall.
Step B, startup regulation circulation air feed system 2, regulation gasification furnace 103, incinerator 104 and circulation air feed system 2 Technological parameter (pusher speed, fire grate speed, pathogenic wind-warm, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, Negative pressure, thickness of feed layer etc. in stove), feed intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 works conveying garbage, rubbish Proceeding by burning in the burner hearth of gasification furnace 103, rubbish residue is piled up formation windrow at transition falls slag section 109 and is sealed, and makes The stove chamber inner combustion state temperature of gasification furnace 103 is stabilized to more than 850 DEG C, the moving hearth 105 work output combustion of incinerator 104 Rubbish residue after cinder.
Each technological parameter (pusher speed of step C, regulation gasification furnace 103, incinerator 104 and circulation air feed system 2 Negative pressure, thickness of feed layer in degree, fire grate speed, pathogenic wind-warm, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, stove Deng), rubbish is gradually gasified by gasification furnace 103, and gasification temperature is stable between 700-800 DEG C, makes the stable product of gasification furnace 103 The raw high-temperature flue gas containing 10%-20% synthesis gas, it is equal that gasification furnace 103 vaporized state stably carries out low temperature, middle temperature or high-temperature gasification Can.Make incinerator 104 fired state temperature stabilization to more than 850 DEG C, it is achieved rubbish continuous gasification burning disposal；Need to regulate simultaneously Each technological parameter of cyclone dust removal room 3, makes cyclone dust removal room 3 the 3rd exhanst gas outlet 304 temperature stabilization to more than 850 DEG C.
Step D, need to overhaul or during blowing out, stop feeding intake, regulation gasification furnace 103, incinerator 104 and circulation air feed system The technological parameter of 2, makes gasification furnace 103 be gradually restored to fired state, after rubbish and rubbish residue burn, closes 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 regulated simultaneously, make gasification furnace 103 are gradually restored to fired state.
Finally illustrate, preferred embodiment above only in order to technical scheme to be described and unrestricted, although logical Cross above preferred embodiment the present invention to be described in detail, it is to be understood by those skilled in the art that can be In form and it is made various change, without departing from claims of the present invention limited range in details.

Claims (10)

1. high-moisture gas recycling refuse gasification combustion gas and a steam turbine combined generating system, including refuse gasification burn System, steam generator system, electricity generation system, described steam generator system has drum, superheater, it is characterised in that: described 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, electromotor a, electromotor b, waste heat boiler, air-water heat exchanger, air vapour gas heat exchanger, synthesis gas vapour gas Heat exchanger, recirculation blower, mixer/separator and give water input system, the sidewall of described blender be provided with the first entrance, Second entrance, the bottom of described blender is provided with outlet, and the top of described blender is provided with venthole, the of described blender One entrance connects the saturated vapor outlet of drum, and the second entrance of described blender connects the gas outlet of pressure-air compressor, The air inlet of described pressure-air compressor connects the gas outlet of low-pressure air compressor, the air inlet of described low-pressure air compressor Mouth and atmosphere, the outlet of described blender connects the water inlet of drum, and the venthole of described blender connects superheater Air intake, the venthole output high pressure superheated steam of described superheater, the venthole of described superheater connects entering of turbine a QI KOU, described turbine a is connected with electromotor a power, and high pressure superheated steam promotes turbine a generating, described synthesis flue gas pressure The air inlet of mechanism of qi connects the Waste gas outlet of steam generator system, and the gas outlet output steam generator system of synthesis flue gas compressor does not utilizes Complete high-pressure synthesis flue gas, the air inlet of described synthesis smoke combustion room connects the synthesis gas outlet of flue gas compressor, mistake respectively The venthole of hot device, by high pressure superheated steam and the input synthesis smoke combustion indoor mixed combustion of high-pressure synthesis flue gas, synthesizes cigarette The gas outlet of combustion chamber connects the air inlet of turbine b, and described turbine b is connected with electromotor b power, and high-temperature flue gas promotes Turbine b generates electricity, and the gas outlet of turbine b connects waste heat boiler, and the venthole of described waste heat boiler connects steam turbine, described vapour Turbine is connected with electromotor b power, the superheated steam pushing turbine generating that waste heat boiler is discharged, the draining of described waste heat boiler Mouth, the discharge outlet of steam turbine connect respectively to the water inlet of water input system；
What the gas outlet of described turbine a connected synthesis gas vapour gas heat exchanger respectively adds the passage of heat, the adding of air vapour gas heat exchanger The passage of heat, synthesis gas vapour gas heat exchanger add the passage of heat, adding of air vapour gas heat exchanger, reconnects recirculation after passage of heat parallel connection The air inlet of blower fan, the Waste gas outlet of described waste heat boiler connects the air inlet of recirculation blower, giving vent to anger of recirculation blower Mouth connects mixer/separator, and described mixer/separator isolates nitrogen purge or recycling or input refuse gasification CIU As gasifying agent, residual gas input refuse gasification CIU is as gasifying agent, the air inlet of described synthesis smoke combustion room And being connected the heated passage of synthesis gas vapour gas heat exchanger between the gas outlet of synthesis flue gas compressor, the second of described blender enters Being connected the heated passage of air vapour gas heat exchanger between mouth and the gas outlet of pressure-air compressor, described low-pressure air is calmed the anger The heated passage of air-water heat exchanger is connected between machine, pressure-air compressor, described to water input system outlet connection air water Steam generator system, waste heat boiler are supplied water after the passage of heat by adding of heat exchanger.
The refuse gasification combustion gas of high-moisture gas the most according to claim 1 recycling and steam turbine combined generating system, It is characterized in that: described include being sequentially connected in series by pipeline to water input system condenser, water pump, oxygen-eliminating device, booster water pump, The discharge outlet of described waste heat boiler is connected between water pump, oxygen-eliminating device by pipeline, arranges feedwater between described water pump, oxygen-eliminating device The water inlet of input system, connects water source, the water inlet of described condenser to the water inlet of water input system by moisturizing pipeline Connected the discharge outlet of steam turbine by pipeline, the outlet of described booster water pump is to the outlet of water input system.
The refuse gasification combustion gas of high-moisture gas the most according to claim 1 recycling and steam turbine combined generating system, It is characterized in that: described low-pressure air compressor, pressure-air compressor, turbine a, electromotor a power successively connect, and with Step rotates；Described synthesis flue gas compressor, turbine b, steam turbine, electromotor b power successively connect, and synchronous axial system.
The refuse gasification combustion gas of high-moisture gas the most according to claim 1 recycling and steam turbine combined generating system, It is characterized in that: described steam generator system includes that boiler body, described boiler body have cyclone dust removal room, furnace chamber a, furnace chamber b, institute The lower end stating cyclone dust removal room arranges smoke inlet, and the smoke inlet of cyclone dust removal room is connected with refuse gasification CIU, rotation Wind dirt pocket upper end is the 3rd exhanst gas outlet, and the 3rd exhanst gas outlet of upper end, cyclone dust removal room connects with the upper end of furnace chamber a, described Furnace chamber a, the lower end connection of furnace chamber b, the upper end of described furnace chamber b arranges waste gas outlet, described cyclone dust removal indoor circumferentially arranged with Water-cooling wall ringwise, is provided with described superheater, is provided with vaporizer in furnace chamber b in described furnace chamber a, the top of boiler body End arranges described drum, and described cyclone dust removal room, furnace chamber a, furnace chamber b are respectively positioned on below drum, and described drum is provided with soda pop Import, is provided with water separator in drum, be used for separating steam water interface, and drum connects water-cooling wall by the first down-comer Water inlet, is used for exporting the isolated water of water separator, and drum connects the water inlet of vaporizer by the second down-comer, uses In the output isolated water of water separator, described water-cooling wall, the venthole of vaporizer connect drum by steam pipe respectively Air intake, is used for the high-temperature steam that refluxes.
The refuse gasification combustion gas of high-moisture gas the most according to claim 4 recycling and steam turbine combined generating system, It is characterized in that: described boiler body has furnace chamber c, the upper end of described furnace chamber c connects with the waste gas outlet of furnace chamber b upper end, stove The lower end of room c arranges Waste gas outlet, and the Waste gas outlet of described furnace chamber c connects flue gas purification system, described gas cleaning system Thick cleaning system that system includes being sequentially connected with, booster fan, fine purifiation cleaner unit, the flue gas after purification feeds synthesis flue gas and calms the anger Machine.
The refuse gasification combustion gas of high-moisture gas the most according to claim 5 recycling and steam turbine combined generating system, It is characterized in that: described thick cleaning system includes aeration tower and cleaner unit, described fine purifiation cleaner unit uses Lei Shi Venturi scrubbing System, including Venturi scrubber and cyclone separator, described aeration tower connects the Waste gas outlet of furnace chamber c, and aeration tower exports Connect cleaner unit, then made deep purifying by entering fine purifiation cleaner unit after booster fan supercharging.
The refuse gasification combustion gas of high-moisture gas the most according to claim 5 recycling and steam turbine combined generating system, It is characterized in that: be provided with economizer in described furnace chamber c, the water inlet of described economizer connects with to the outlet of water input system Logical, the outlet of described economizer and the soda pop inlet communication of drum.
The refuse gasification combustion gas of high-moisture gas the most according to claim 5 recycling and steam turbine combined generating system, It is characterized in that: described refuse gasification CIU includes incinerator, circulation air feed system, and described incinerator includes Grate, and feed hopper, gasification furnace and the incinerator set gradually along feedstock direction on grate, the rear of gasification furnace is gasification The cinder notch that falls of stove, incinerator is positioned at gasification furnace and falls the front lower place of cinder notch, and the rear of incinerator is the slag notch of incinerator, described stove Frame is provided with garbage pusher device, and described garbage pusher device is positioned at the lower section of feed hopper, for the rubbish in feed hopper is pushed gas Change in stove, the lower section of gasification furnace moving hearth and incinerator moving hearth be respectively arranged below with what at least one was independently arranged Air compartment, is provided with windrow seal section between described feed hopper, gasification furnace, the grate part between described gasification furnace and incinerator On leave transition and fall slag section, the described transition slag section that falls is provided with residue pusher, for the rubbish residue that will fall in gasification furnace Pushing in incinerator, described transition falls and is provided with isolating door to be opened/closed in slag section, described isolating door for by gasification furnace, burn Stove cuts off；Described gasification furnace, incinerator include furnace shell, moving hearth respectively, and the forward and backward side of described gasification furnace passes through windrow respectively Seal section, transition fall slag section seal, described transition fall slag section isolation gasification furnace, incinerator, make gasification furnace, incinerator the most only Vertical；Described gasification furnace, incinerator, respectively in the shape that arches upward, the face arch of described gasification furnace, rear arch are respectively provided with secondary for air port, institute The vault stating gasification furnace arranges the first exhanst gas outlet, the smoke inlet of described cyclone dust removal room and the connection of the first exhanst gas outlet, institute The vault stating incinerator arranges the second exhanst gas outlet, and described gasification furnace, incinerator are respectively equipped with igniting combustion supporting hole；
Described circulation air feed system includes dust arrester, the first blower fan, the second blower fan, and the inlet end of described dust arrester is by pipe Road and the second exhanst gas outlet connect, and the outlet side of described dust arrester is connected by the inlet end of pipeline and the first blower fan, described The outlet side of the first blower fan connects the house steward of the first manifold, the arm of described first manifold respectively with under gasification furnace moving hearth Each secondary on each air compartment, a gasification furnace of side is for the smoke inlet connection of air port and cyclone dust removal room, described first discrimination The first regulation valve it is respectively provided with on each arm of pipe, the air inlet of described second blower fan and atmosphere, described second blower fan Gas outlet connects the house steward of the second manifold, the arm of described second manifold respectively with incinerator moving hearth below each First air Room and the inlet end of dust arrester, outlet side connection, each arm of described second manifold is respectively provided with the second regulation valve, institute Stating cyclone dust removal room and be provided with some combustion airs confession air port, described some combustion airs are positioned at smoke inlet, the 3rd flue gas for air port Between outlet, also include that the 3rd manifold, the described house steward of the 3rd manifold connect with the gas outlet of the second blower fan, described 3rd manifold Each arm connect for air port with some combustion airs respectively, each arm of the 3rd manifold is respectively provided with the 3rd and regulates valve.
The refuse gasification combustion gas of high-moisture gas the most according to claim 8 recycling and steam turbine combined generating system, It is characterized in that: below described furnace chamber a, furnace chamber b, be provided with common slag notch, the lower end of described cyclone dust removal room be provided with to The taper slag notch that lower radius diminishes, this common slag notch, taper slag notch connect with the burner hearth of gasification furnace respectively.
The refuse gasification combustion gas of high-moisture gas the most according to claim 8 recycling and steam turbine combined generating system, It is characterized in that: be provided with air preheater in described furnace chamber c, the outlet side of described second blower fan connects the air inlet of air preheater Mouthful, the gas outlet of air preheater connects the house steward of the second manifold.
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CN106765146A (en) * 2016-12-30 2017-05-31 重庆科技学院 Secondary pollutant control system based on waste gasification melt-combustion
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CN115074142A (en) * 2022-07-04 2022-09-20 重庆科技学院 Reaction device for biomass multi-atmosphere collaborative thermal conversion disposal
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