CN206092090U - Multi - stage heat's waste gasification gas and steam turbine integrated power production system - Google Patents

Abstract

The utility model discloses a multi - stage heat's waste gasification gas and steam turbine integrated power production system, including waste gasification system, boiler system, power generation system, power generation system includes blender, air compressor, synthetic flue gas compressor, synthetic flue gas combustion chamber, turbine a, turbine b, steam turbine, generator a, generator b, exhaust -heat boiler. Be connected with the heating channel of synthetic gas vapour gas heat exchanger, the heating channel of air vapour gas heat exchanger, steam water heat exchanger's heating channel between turbine a's the gas outlet and the water inlet of feedwater input system. The passage of heat that receives of connecting gas water heat exchanger between low pressure air compressor, the highly -compressed air compressor. Use this multi - stage heat's waste gasification gas and steam turbine integrated power production system, the continuous gasification treatment of large -scale rubbish, garbage treatment amount is bigger, and thermal recovery efficiency is high, and the pollution abatement thing discharges effectively.

Description

A kind of refuse gasification combustion gas of multi-stage heat exchanger and steam turbine combined generating system

Technical field

The utility model belongs to solid waste incineration Treatment and recovery processing technology field, more particularly to a kind of multistage The refuse gasification combustion gas of heat exchange and steam turbine combined generating system.

Background technology

Existing technology of garbage disposal mainly has burning, sanitary landfills, compost, waste recovery etc..In garbage disposal routine In technology, burning disposal has reduced training substantially, and innoxious thorough, occupation of land amount is little, and waste heat energy is obtained by, and secondary pollution is few The advantages of, meet the strategic requirement of China's sustainable development.But with to the continuous improvement of environmental requirement, how strengthening both at home and abroad 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 use all kinds of incineration technologies especially for domestic rubbish, gasification burning technology widely industrialize by The technological innovation for bringing domestic garbage disposal industry is regenerated.

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 in Technique Popularizing application or there is a definite limitation, 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, wherein having in body of heater using mechanical backstepping fire grate, forwards fire grate or combined fire grate, also adopts 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, using boiler heat is reclaimed Amount, for generating electricity, heat supply, heating etc..

In sum, typical gasification burning and boiler plant technology maturation, respectively there is its own advantage, but in China's reality The problem and shortage for solving is needed using in：

1., for characteristics such as China's house refuse water content height, complicated components, the technology of moving hearth is used, 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. being on the increase with refuse production, sanitary fill such as mountain, garbage treatment quantity must be effectively improved, Could meeting the market requirement.

3. require in the face of strict pollutant emission, 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 using boiler reclaim waste incineration after high-temperature flue gas heat, produce steam shift onto steam turbine send out Electricity, whole transition heat efficiency losses are larger, process identical quantity of refuse, and relative reduction thermal losses and raising heat exchanger effectiveness can To improve the thermal efficiency.

The 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 The process of system (ZL 200610062631.1), coal powder gas turbine generation system and 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)：Rubbish heat treatment mode method is not bound with, and The problems such as secondary pollution control, smoke components complexity of rubbish heat treatment；It is anti-to aoxidize that conventional garbage is heat-treated thermal chemical reaction Based on answering, reduction reaction auxiliary is also easy to produce secondary pollution, and burned oxygen quotient is big, and First air, Secondary Air infeed amount are big, Dust content is higher in flue gas, affects larger to heat reclaiming system and smoke processing system, and easy dust stratification, exhaust gas volumn is larger, 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 is heat-treated 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.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of transition heat efficiency losses are less, heat The organic efficiency of amount is higher, the refuse gasification combustion gas of the lower multi-stage heat exchanger of pollutant emission and steam turbine cogeneration system System.

What the purpose of this utility model was realized in：

A kind of refuse gasification combustion gas of multi-stage heat exchanger and steam turbine combined generating system, including refuse gasification burning system System, steam generator system, electricity generation system, the steam generator system has drum, superheater, and the electricity generation system includes blender, low pressure Air compressor, pressure-air compressor, synthesis flue gas compressor, synthesis smoke combustion room, turbine a, turbine b, steamer Machine, generator a, generator b, waste heat boiler, air-water heat exchanger, vapor-water heat exchanger, air vapour gas heat exchanger, synthesis gas vapour gas are changed Hot device and feedwater input system, the side wall of the blender is provided with first entrance, second entrance, the bottom of the blender Delivery port is provided with, venthole is provided with the top of the blender, the first entrance of the blender connects the saturated vapor of drum Outlet, the second entrance of the blender connects the gas outlet of pressure-air compressor, the air inlet of the pressure-air compressor The gas outlet of mouth connection low-pressure air compressor, the air inlet and atmosphere of the low-pressure air compressor, the blender Delivery port connect the water inlet of drum, the venthole of the blender connects the air intake of superheater, and the superheater goes out Steam ports exports high pressure superheated steam, and the venthole of the superheater connects the air inlet of turbine a, the turbine a and generating Machine a power connectors, high pressure superheated steam promotes turbine a to generate electricity, the air inlet connection boiler system of the synthesis flue gas compressor The Waste gas outlet of system, synthesizes the high-pressure synthesis flue gas that the gas outlet output steam generator system of flue gas compressor has not been utilized, described The air inlet of synthesis smoke combustion room connects respectively gas outlet, the venthole of superheater of synthesis flue gas compressor, and height is pressed through Vapours and mixed combustion in high-pressure synthesis flue gas input synthesis smoke combustion room, synthesize the gas outlet connection whirlpool of smoke combustion room The air inlet of turbine b, the turbine b and generator b power connectors, high-temperature flue gas promote turbine b to generate electricity, turbine b's Gas outlet connects waste heat boiler, and the venthole connection steam turbine of the waste heat boiler, the steam turbine connects with generator b power Connect, the high pressure superheated steam pushing turbine that waste heat boiler is discharged generates electricity, the discharge outlet of the waste heat boiler, the draining of steam turbine Mouth connects respectively the water inlet of feedwater input system；

Synthesis gas vapour gas heat exchanger is connected between the gas outlet of the turbine a and the water inlet of feedwater input system Plus the passage of heat, air vapour gas heat exchanger plus the passage of heat, vapor-water heat exchanger plus the passage of heat, the heating of synthesis gas vapour gas heat exchanger Passage, air vapour gas heat exchanger plus the passage of heat parallel connection after again with the heating Tandem of vapor-water heat exchanger, the synthesis flue gas Connect the heated passage of synthesis gas vapour gas heat exchanger between the air inlet of combustion chamber and the gas outlet of synthesis flue gas compressor, it is described Connect the heated passage of air vapour gas heat exchanger between the second entrance of blender and the gas outlet of pressure-air compressor, it is described Connect the heated passage of air-water heat exchanger between low-pressure air compressor, pressure-air compressor, the feedwater input system goes out Steam generator system, waste heat boiler are supplied after that the mouth of a river is sequentially connected air-water heat exchanger plus the passage of heat, the heated passage of vapor-water heat exchanger Water.

Further, the feedwater input system includes condenser, water pump, oxygen-eliminating device, the increasing being sequentially connected in series by pipeline Water pump, the discharge outlet of the waste heat boiler is connected between water pump, oxygen-eliminating device by pipeline, between the water pump, oxygen-eliminating device The water inlet of feedwater input system is set, and the water inlet of the input system that feeds water connects water source, the condenser by moisturizing pipeline Water inlet pass through the discharge outlet that pipeline connects steam turbine, the delivery port of the booster water pump is the water outlet of input system of feeding water Mouthful.

Steam output device can not be all converted to water by condenser using complete steam, and absorb the heat of steam release Amount, the Main Function of oxygen-eliminating device be exactly with it to remove boiler feedwater in oxygen and other gases, it is ensured that the quality of feedwater, increase Water pump can improve hydraulic pressure, it is ensured that the water supply capacity of feedwater input system, and feedwater input system can be to steam turbine, waste heat pot The water that fire grate goes out carries out further heat recovery, improves heat recovery efficiency.

Further, successively power connects for the low-pressure air compressor, pressure-air compressor, turbine a, generator a Connect, and synchronous axial system；It is described to synthesize flue gas compressor, turbine b, steam turbine, generator b power connector successively, and synchronously turn 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 arranges 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, the 3rd exhanst gas outlet of cyclone dust removal room upper end connects with the upper end of furnace chamber a It is logical, the furnace chamber a, the lower end connection of furnace chamber b, the upper end of the furnace chamber b arranges waste gas outlet, along week in the cyclone dust removal room To the water-cooling wall being provided with a ring, described superheater is provided with the furnace chamber a, evaporimeter, boiler sheet are provided with furnace chamber b The top of body arranges described drum, and the cyclone dust removal room, furnace chamber a, furnace chamber b are respectively positioned on drum lower section, 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, for exporting the water that water separator is isolated, drum connects entering for evaporimeter by the second down-comer The mouth of a river, for exporting the water that water separator is isolated, the water-cooling wall, the venthole of evaporimeter are connected respectively by steam pipe The air intake of drum, for the high-temperature steam that flows back.

In order to carry out harmless treatment to the flue gas that furnace chamber c is discharged, it is preferable that the 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 ends, and the lower end of furnace chamber c arranges 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 adopts Lei Shi venturi Washing system, including Venturi scrubber and cyclone separator, the aeration tower connects the Waste gas outlet of 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 require combustion gas cleannes.

In order to carry out further heat recovery to the flue gas that furnace chamber b is discharged, heat recovery efficiency is improved, further Ground, is provided with economizer in the furnace chamber c, the water inlet of the economizer is connected with the delivery port of feedwater 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 along feedstock direction on grate, the rear of gasification furnace For the cinder notch that falls of gasification furnace, incinerator falls the front lower place of cinder notch positioned at gasification furnace, the rear of incinerator for incinerator slag notch, 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 Push in gasification furnace, the lower section of gasification furnace moving hearth and incinerator moving hearth to be respectively arranged below with least one independent The air compartment for arranging, is provided with windrow seal section, the stove between the gasification furnace and incinerator between the feed hopper, gasification furnace Leave transition on frame part to fall slag section, the transition slag section that falls is provided with residue pusher, for the rubbish that will be fallen in gasification furnace Rubbish residue is pushed in incinerator, and the transition falling to be provided with slag section isolating door to be opened/closed, and the isolating door is used for will gasification Stove, incinerator cut-off；The gasification furnace, incinerator include respectively furnace shell, moving hearth, and the forward and backward side of the gasification furnace distinguishes By windrow seal section, transition fall slag section sealing, the transition fall slag section isolation gasification furnace, incinerator, make gasification furnace, incinerator It is separate；The gasification furnace, incinerator are respectively provided with secondary confession respectively in arching upward shape on the face arch of the gasification furnace, rear arch Air port, the vault of the gasification furnace arranges 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 arranges 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 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 arm of first manifold respectively with gasification furnace moving hearth Each air compartment of lower section, each secondary confession air port on gasification furnace and cyclone dust removal room smoke inlet connection, described the The first regulating valve, the air inlet and atmosphere of second blower fan, second wind are respectively provided with each arm of one manifold The gas outlet of machine connects the house steward of the second manifold, the arm of second manifold respectively with incinerator moving hearth below each one The inlet end of secondary air compartment and dust arrester, outlet side connection, on each arm of second manifold the second regulation is respectively provided with Valve, the cyclone dust removal room is provided with some combustion airs and supplies air port, some combustion airs for air port be located at smoke inlet, the 3rd Between exhanst gas outlet, also including the 3rd manifold, the house steward of the 3rd manifold connects with the gas outlet of the second blower fan, and the described 3rd Each arm of manifold is connected respectively with some combustion airs for air port, and on each arm of the 3rd manifold the 3rd regulating valve is respectively provided with.

For the waste residue for discharging furnace chamber a, furnace chamber b, flue gas deposition is produced in cyclone dust removal room, and prevent waste residue effusion from producing Pollution, it is preferable that the furnace chamber a, furnace chamber b lower section is provided with common slag notch, the lower end of the cyclone dust removal room is provided with from upper To the taper slag notch that lower radius diminishes, common slag notch, the taper slag notch are connected respectively with the burner hearth of gasification furnace.

In order to carry out further heat recovery to the flue gas that furnace chamber b is discharged, heat recovery efficiency is improved, it is preferable that Air preheater is provided with the furnace chamber c, the outlet side of 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.

As a result of above-mentioned technical proposal, the utility model has the advantages that：

The utility model employs the pressure-air that blender exports to air compressor, the saturated vapor of drum output and enters Row mixing, exports high pressure superheated steam after hot device, and high pressure superheated steam promotes turbine a to generate electricity, and the utility model is adopted The high-pressure synthesis flue gas that synthesis flue gas compressor output steam generator system has not been utilized, high pressure superheated steam and the height of superheater output Mixed combustion in flue gas input synthesis smoke combustion room is pressed into, output high-temperature flue gas promote turbine b to generate electricity, turbine b's Gas outlet connects waste heat boiler, and the discharge outlet connection feedwater input system of waste heat boiler, the superheated steam of the waste heat boiler is pushed away Dynamic steam turbine power generation, take full advantage of steam generator system does not carry out combined cycle generation using complete flue gas；The utility model is also The heat that turbine a has not been utilized is reclaimed by air vapour gas heat exchanger, synthesis gas vapour gas heat exchanger, vapor-water heat exchanger, is utilized Air-water heat exchanger reclaims the amount of residual heat of feedwater input system, using air-water heat exchanger, air vapour gas heat exchanger pre-add hot-air, The water supply of feedwater input system is preheated using vapor-water heat exchanger, using synthesis gas vapour gas heat exchanger pre-add hot synthesis gas, significantly Improve heat recovery efficiency；The discharge outlet connection feedwater input system of waste heat boiler, steam turbine, the feedwater input system is to pot Furnace system, waste heat boiler supply water, take full advantage of waste heat boiler, steam turbine not using complete flue gas carry out combined cycle send out Electricity, greatly reduces the discharge capacity of waste gas, and transition heat efficiency losses are less, and the organic efficiency of heat 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 For abundant, the temperature for producing of burning is higher, relatively reduces thermal losses and improves heat exchanger effectiveness.What this steam generator system was reclaimed In the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas enters cyclone dust removal room to origin of heat, while 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, section heat Device and air preheater.Recycle the pre- hot condensed water of economizer, pre- hot condensed water enters boiler part, condensed water in water-cooling wall and Heat in evaporimeter, form saturated vapor and enter drum, saturated vapor enters superheater after steam-water separation, is thermally formed again Vapours is exported, for generating electricity.The utility model is novel, using cyclone-burning method, reduces fly ash content in flue gas； Syngas combustion temperature is high, and gas residence time is long, and pollutant is effectively decomposed, and reduces pollutant emission, realizes rubbish Synthesis gas burning disposal and heat recovery and utilization after continuous gasification.

The gasification furnace of incinerator, incinerator are provided separately, and the vault of gasification furnace arranges the first exhanst gas outlet, incinerator Vault arrange the second exhanst gas outlet, flue gas is processed respectively beneficial to according to the difference of flue gas quality, while being conducive to removing flue gas Dirt, can provide the flue gas of higher quality, make the utilization rate of flue gas higher, and the waste residue of discharge is less.

Second blower fan blast air for incinerator provide First air and for cyclone separator, the first blower fan provide temperature adjustment supply Wind, by the second regulation valve regulation wind supply quantity on correspondence pipeline, makes incinerator residue fully burn；Then, the first blower fan is taken out The flue gas of incinerator is taken, after temperature adjustment and cyclone collection flying dust, the flue gas supply gasification furnace of certain pressure is formed First air and Secondary Air, by the first regulation valve regulation wind supply quantity on correspondence pipeline, make rubbish in gasification furnace produce gasification, gas Change the flue gas that stove is contained within a certain amount of synthesis gas, discharge from the first exhanst gas outlet, into cyclone dust removal room processing links, the first wind The unnecessary flue gas that machine is extracted 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 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 the stage that burns of drying, gasification and residue on stoker fired grate, and adaptation China house refuse is 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 can realize large-scale rubbish continuous gasification burning disposal, it is ensured 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.

Description of the drawings

Fig. 1 is structural representation of the present utility model；

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 for circulating 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 confession 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 regulating valve, and 208 is the second regulating valve, and 209 is the 3rd regulating 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 For 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 evaporimeter, 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 Enter 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 are section Hot device, 419 is flue gas purification system, and 420 is aeration tower, and 421 is deduster, and 422 is booster fan, and 423 is fine purifiation deduster, 424 is air preheater.

5 is electricity generation system, and 501 is blender, and 502 is generator a, and 503 is low-pressure air compressor, and 504 are synthesis cigarette Air pressure mechanism of qi, 505 are synthesis smoke combustion room, and 506 is turbine a, and 507 is waste heat boiler, and 508 is generator b, and 509 is whirlpool Turbine b, 510 is air-water heat exchanger, and 511 is vapor-water heat exchanger, and 512 is air vapour gas heat exchanger, and 513 are the heat exchange of synthesis gas vapour gas Device, 514 is pressure-air compressor.

Specific embodiment

Referring to Fig. 1, be multi-stage heat exchanger refuse gasification combustion gas and steam turbine combined generating system it is a kind of preferably real Example, including refuse gasification CIU, steam generator system, electricity generation system 5 are applied, the steam generator system has drum 408, superheater 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 feedwater input system 412, further, the low-pressure air compressor 503, high pressure is empty Air pressure mechanism of qi 514, turbine a506, generator a502 power connector successively, and synchronous axial system；The synthesis flue gas compressor 504th, turbine b509, steam turbine 411, generator b508 power connector successively, and synchronous axial system.

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 is provided with venthole, and the first entrance of the blender 501 connects the saturated vapor of drum 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 delivery port of the blender 501 connects the water inlet of drum, 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 air inlet of synthesis flue gas compressor 504 connects the Waste gas outlet of steam generator system, and the gas outlet for synthesizing flue gas compressor 504 is defeated Go out the high-pressure synthesis flue gas that steam generator system has not been utilized, the air inlet of the synthesis smoke combustion room 505 connects respectively synthesis cigarette 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 Mixed combustion in room 505 is burnt, the gas outlet for synthesizing smoke combustion room 505 connects the air inlet of turbine b509, the turbine B509 and generator b508 power connectors, high-temperature flue gas promote turbine b509 to generate electricity, and the gas outlet connection of turbine b509 is remaining 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 high pressure superheated steam pushing turbine 411 that waste heat boiler 507 is discharged generates electricity, the discharge outlet of the waste heat boiler 507, The discharge outlet of steam turbine 411 connects respectively the water inlet of feedwater input system 412；

Synthesis gas vapour gas is connected between the gas outlet of the turbine a506 and the water inlet of feedwater input system 412 to change Hot device 513 plus the passage of heat, air vapour gas heat exchanger 512 plus the passage of heat, vapor-water heat exchanger 511 plus the passage of heat, synthesis gas Vapour gas heat exchanger 513 plus the passage of heat, air vapour gas heat exchanger 512 plus the passage of heat parallel connection after again with vapor-water heat exchanger 511 Heating Tandem, connects between the air inlet of the synthesis smoke combustion room 505 and the gas outlet of synthesis flue gas compressor 504 The heated passage of synthesis gas vapour gas heat exchanger 513, the second entrance of the blender 501 and going out for pressure-air compressor 514 Connect the heated passage of air vapour gas heat exchanger 512, the low-pressure air compressor 503, pressure-air compressor between gas port Connect the heated passage of air-water heat exchanger 510 between 514, the delivery port of feedwater input system 412 is sequentially connected air water heat exchange Adding for device 510 is supplied water after the passage of heat, the heated passage of vapor-water heat exchanger 511 to steam generator system, waste heat boiler 507.

Further, the feedwater input system 412 includes being 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 is connected to water pump 414, oxygen-eliminating device 415 by pipeline Between, the water inlet of feedwater input system 412 is set between the water pump 414, oxygen-eliminating device 415, the input system 412 of feeding water is entered 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 of feedwater 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 arranges 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 goes out for the 3rd flue gas Mouth 304, the smoke inlet 303, the 3rd exhanst gas outlet 304 are located at the opposition side of the circumferential wall of cyclone dust removal room 3, cyclone dust removal room 3 top arranges dirt pocket igniting combustion supporting hole 301.In order that flue gas, combustion air are sufficiently mixed, burn in cyclone dust removal room 3 Discharge from the 3rd exhanst gas outlet 304 afterwards, the cyclone dust removal room 3 is provided with some combustion airs for air port 305, described some combustion-supporting Wind is located between smoke inlet 303, the 3rd exhanst gas outlet 304 for air port 305.The smoke inlet 303, the 3rd exhanst gas outlet 304th, combustion air is radially or tangentially arranged for air port 305 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 is connected with the upper end of furnace chamber a402, the furnace chamber a402, the lower end connection of furnace chamber b403, the furnace chamber b403's Upper end arranges waste gas outlet, and the lower end of the 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 is connected with the burner hearth of gasification furnace 103.The furnace chamber a402, furnace chamber b403 lower section is provided with common slag notch, The common slag notch is connected with the burner hearth of gasification furnace 103.In the present embodiment, the common slag notch and taper slag notch 302 connect with the afterbody changeover portion of the burner hearth of gasification furnace 103.

The interior water-cooling wall 405 being circumferentially with along inwall in a ring in the cyclone dust removal room 3, is provided with the furnace chamber a402 Superheater 406, is provided with evaporimeter 407 in furnace chamber b403, the top of boiler body 4 arranges 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, mix for being input into carbonated drink Water separator is provided with compound, drum 408, for separating steam water interface, drum 408 is connected by the first down-comer 409 The water inlet of water receiving cold wall 405, for exporting the water that water separator is isolated, drum 408 is connected by the second down-comer 410 The water inlet of evaporimeter 407 is connect, for exporting the water that water separator is isolated, the water-cooling wall 405, evaporimeter 407 Venthole connects respectively the air intake of drum 408 by steam pipe, for the high-temperature steam that flows back, the saturated vapor of the drum 408 The air intake for connecting superheater 406 by pipeline is exported, for the high-temperature steam of backflow to be input 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 the lower end of furnace chamber c404 arranges waste gas Floss hole, is provided with economizer 418, the water inlet of the economizer 418 and the delivery port of booster water pump 416 in the furnace chamber c404 Connection, the delivery port of the economizer 418 and the carbonated drink inlet communication of drum 408.The Waste gas outlet connection cigarette of furnace chamber c404 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 feeds synthesis flue gas compressor.The thick cleaning system includes aeration tower 420 With deduster 421, the fine purifiation deduster 423 adopts Lei Shi venturi scrubbing systems, including Venturi scrubber and whirlwind point From device, the aeration tower 420 connects the Waste gas outlet of furnace chamber c, and the outlet of aeration tower 420 connects deduster 421, then by supercharging wind Machine 422 makees deep purifying after being pressurized into fine purifiation deduster 423.

It is that refuse gasification CIU includes incinerator and its circulation air feed system, gasification burning referring to Fig. 7, Fig. 8 Stove includes gasification furnace 103, incinerator 104, can seal between gasification furnace 103 and incinerator 104 or connect, 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 confession air port 115 is respectively provided with face arch, rear arch, the vault of the 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 the feed hopper 102, gas set gradually along feedstock direction on grate 101 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 Fall cinder notch 117, and the slag notch 116 of the incinerator 104 falls the underface of cinder notch 117 positioned at incinerator, it is described fall cinder notch 117 lead to Piping is connected with the slag notch of dust arrester 201.This sealing structure effect is good, can effectively hold reduction pollutant discharge amount. Gasification furnace 103 mainly gasifies to the carbon-containing part of rubbish, and discharges flammable gasification flue gas and rubbish residue, incinerator 104 burnings for being substantially carried out carbon residue are processed, and discharge innoxious lime-ash.The siege 105 of gasification furnace 103 and incinerator 104 is equal Using the independent stoker fired grate formula moving hearth 105 for driving of segmentation, the fire grate of stoker fired grate formula moving hearth 105 is by travelling oven Row's plate forward laps with fixed grate plate, it is spaced collect form, adjacent multigroup moving grate plate is adopted by pull bar connection Driven with a set of driving means.Used as the carrier of conveying garbage, embodiments thereof can be each to stoker fired grate formula moving hearth 105 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 in 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 least one air compartment 107 being independently arranged, in the present embodiment, with gasification furnace The corresponding fire grate of air compartment 107 of 103 first halfs, driving means, as the dryer section of the siege 105 of gasification furnace 103, with gasification The gasification section of the latter half of corresponding fire grate of an air compartment 107 of stove 103, driving means as the siege 105 of gasification furnace 103.Gasification The dryer section of the siege 105 of stove 103, gasification section can be respectively adopted a 1-2 independent air feed of air compartment 107, it is also possible to respectively Using a 3-4 independent air feed of air compartment 107.Certainly, fire grate, driving means and an air compartment 107 also can not be correspondingly arranged, Preferably adjust bed of material movement and air distribution relation on moving hearth 105.Incinerator 104 can adopt 1-4 independent First air The air feed of room 107, burns rear lime-ash and excludes from slag notch, into next step treatment process.

It is provided with windrow seal section 108 between the feed hopper 102, gasification furnace 103, the work of garbage pusher device 106 is entered and located in place In windrow seal section 108, garbage raw material is put into from feed hopper 102 and falls, and garbage pusher device 106 is retreated, then is advanced, reciprocal many Secondary pusher forms windrow in windrow seal section 108, makes the entrance of gasification furnace 103 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, The forward impelling half stroke again of garbage pusher device 106, rubbish is pushed completely in gasification furnace 103, loses the entrance of gasification furnace 103 Windrow sealing effectiveness.Leave transition on the part of grate 101 between the 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 to be pushed into incinerator In 104, the transition slag section 109 that falls can be at windrow sealing state when rubbish residue is piled up, and strengthen the sealing effectiveness of gasification furnace 103, Solve the problems, such as string wind between gasification furnace 103, incinerator 104.In the present embodiment, falls in the transition, and be provided with slag section 109 can The isolating door 111 of opening and closing, the isolating door 111 is used to separate gasification furnace 103, incinerator 104.The furnace lifting initial stage or need control When altering wind between gasification furnace processed 103 and incinerator, isolating door 111 is closed, 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, coordinate to use with the residue pusher 110 that lower section is arranged, to realize that rubbish is continuous Gasification burning process.

, respectively in the shape that arches upward, the face arch of the gasification furnace 103 is for the upper end of the gasification furnace 103, the upper end of incinerator 104 Flat construction, or, the face arch of gasification furnace 103 is inclined upwardly structure for rear end.The vault of the gasification furnace 103 arranges the first cigarette Gas outlet 112, the vault of the incinerator 104 arranges the second exhanst gas outlet 113, and the upper end of the gasification furnace 103 is arched upward, burns Igniting combustion supporting hole 114 is respectively equipped with the arching upward of the upper end of stove 104.Gasification flue gas is 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 incinerator；Forward and backward arch and moving hearth 105 Relative position diminishes, and reduces the space of incinerator occupancy, is also easier to insulation, reduces the amount of leakage of heat, is conducive to rubbish Rubbish fully gasifies.Secondary confession air port 115 is respectively provided with 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 Dust arrester 201 is stated for cyclone separator or hot precipitator 421, first blower fan 202 is high-temperature blower, described second Blower fan 203 is air blast.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 the first manifold 204, the arm 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 in each secondary confession air port 115 and cyclone dust removal room 3 on air compartment 107, gasification furnace 103 is connected, and described first The first regulating valve 207 is respectively provided with each arm of manifold 204, 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 arm of the second manifold 205 respectively with the moving hearth of incinerator 104 below each air compartment 107 and dust arrester 201 Inlet end, outlet side connection, the second regulating valve 208 is respectively provided with each arm of second manifold 205.Also include the 3rd Manifold 206, the house steward of the 3rd manifold 206 connects with the gas outlet of the second blower fan 203, each of the 3rd manifold 206 Pipe is connected respectively with some combustion airs for air port 305, and on each arm of the 3rd manifold 206 the 3rd regulating valve 209 is respectively provided with.Institute State and air preheater 424 be provided with furnace chamber c404, in the present embodiment, air preheater 424 is located at the downstream of economizer 418, The outlet side of second blower fan 203 connects the air inlet of air preheater 424, the gas outlet connection of air preheater 424 the The house steward of two manifolds 206, the house steward of the 3rd manifold 206 connects 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 In the corresponding air compartment 107 in the lower section of stoker fired grate formula moving hearth 105, then sprayed by an air holes on moving hearth 105 Rubbish is shot through, is gasified, wind supply quantity is adjusted by the first regulating valve 207 on each arm of correspondence.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 confession air port 115 is provided with forward and backward arch, gasification efficiency is improved, strengthens macromolecule in flue gas Substance decomposition.Igniting combustion supporting hole 114 is provided with rear arch, temperature is used in furnace lifting, baker and stable gasification furnace 103, by correspondence The first regulating valve 207 on each arm adjusts wind supply quantity.The air inlet of second blower fan 203 and material pit atmosphere, the The air that two blower fans 203 are blasted 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 arm of second manifold 205 respectively with each First air of the lower section of 104 moving hearth of incinerator 105 The inlet end of room 107 and dust arrester 201, outlet side connection, on each arm of second manifold 205 second is respectively provided with Regulating valve 208.The First air of incinerator 104 is that air blast blasts the air of certain pressure under stoker fired grate formula moving hearth 105 In the corresponding air compartment 107 in side, 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 each arm of correspondence.The inlet end of dust arrester 201, the air intake of outlet side are Temperature adjustment air feed, temperature adjustment air feed is that the air of certain pressure is blasted incinerator 104 and exports (i.e. cyclone inlet) by air blast Temperature adjustment is carried out, meanwhile, Cyclone outlet (i.e. high-temperature blower entrance) blasts further temperature adjustment, by each arm of correspondence First regulating valve 207 adjusts wind supply quantity.

Circulation air feed system to the waste disposal method after stoker fired grate formula refuse gasification incinerator air feed, the method press with Lower step is carried out：

Step A, the gate for closing stoker fired grate formula refuse gasification incinerator 1 and atmospheric vent, start mechanical grate-type rubbish Rubbish incinerator 1, by garbage raw material feed hopper 102 is put into, and the pusher back and forth of garbage pusher device 106 will be from feed hopper 102 The garbage raw material for falling pushes the windrow seal section 108 between feed hopper 102, gasification furnace 103, forms windrow seal section 108 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 is conveyed into into transition to fall slag section 109, the pusher back and forth of residue pusher 110, the transition rubbish in slag section 109 that falls is 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 piled up can protect mobile stove Bed 105, prevents scaling loss siege 105.Stop being fed 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, treats that this process stabilization is completed, and makes gasification furnace 103 and the burner hearth of incinerator 104 reach 600-700 DEG C of predetermined temperature；Baker Purpose be in order to remove lining in Natural Water and the crystallization water, in order to avoid when going into operation because furnace temperature rises too fast, moisture content is a large amount of Expansion causes body of heater spalling, bubbling or deformation even furnace wall to collapse, and affects the intensity and service life of heating furnace furnace wall.

Step B, startup adjust circulation air feed system 2, adjust gasification furnace 103, incinerator 104 and circulation air feed system 2 Technological parameter (pusher speed, fire grate speed, wind-warm syndrome, blast and an 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 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 piled up to form windrow sealing at transition falls 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, each technological parameter (the pusher speed for adjusting gasification furnace 103, incinerator 104 and circulation air feed system 2 Negative pressure, thickness of feed layer in degree, fire grate speed, wind-warm syndrome, blast and an air quantity, secondary air temperature, blast and air quantity, furnace temperature, stove Deng), gasification furnace 103 gradually gasifies to rubbish, and gasification temperature is stable between 700-800 DEG C, gasification furnace 103 is stably produced The raw high-temperature flue gas containing 10%-20% synthesis gas, it is equal that the vaporized state of gasification furnace 103 stably carries out low temperature, middle temperature or high-temperature gasification Can.Make the fired state temperature stabilization of incinerator 104 to more than 850 DEG C, realize rubbish continuous gasification burning disposal；Need to adjust simultaneously Each technological parameter of cyclone dust removal room 3, makes the temperature stabilization of the 3rd exhanst gas outlet of cyclone dust removal room 3 304 to more than 850 DEG C.

Step D, need to overhaul or during blowing out, stop feeding intake, adjust gasification furnace 103, incinerator 104 and circulation air feed system 2 technological parameter, 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 simultaneously adjusted, gasification furnace is made 103 are gradually restored to fired state.

Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent Pipe is described in detail by above preferred embodiment to the utility model, but those skilled in the art should manage Solution, can make in the form and details various changes, without departing from the utility model claims institute to it The scope of restriction.

Claims (10)

1. a kind of refuse gasification combustion gas of multi-stage heat exchanger and steam turbine combined generating system, including refuse gasification CIU, Steam generator system, electricity generation system, the steam generator system has drum, superheater, it is characterised in that：The electricity generation system includes mixing Device, 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, vapor-water heat exchanger, air vapour gas heat exchanger, synthesis gas Vapour gas heat exchanger and feedwater input system, the side wall of the blender is provided with first entrance, second entrance, the blender Bottom be provided with delivery port, be provided with venthole at the top of the blender, the first entrance connection drum of the blender it is full And steam (vapor) outlet, the gas outlet of the second entrance connection pressure-air compressor of the blender, the pressure-air compressor Air inlet connect low-pressure air compressor gas outlet, the air inlet and atmosphere of the low-pressure air compressor are described The delivery port of blender connects the water inlet of drum, and the venthole of the blender connects the air intake of superheater, described overheated The venthole output high pressure superheated steam of device, the venthole of the superheater connects the air inlet of turbine a, the turbine a With generator a power connectors, high pressure superheated steam promotion turbine a generatings, the air inlet connection of the synthesis flue gas compressor The Waste gas outlet of steam generator system, synthesizes the high-pressure synthesis cigarette that the gas outlet output steam generator system of flue gas compressor has not been utilized Gas, the air inlet of the synthesis smoke combustion room connects respectively gas outlet, the venthole of superheater of synthesis flue gas compressor, will High pressure superheated steam and mixed combustion in high-pressure synthesis flue gas input synthesis smoke combustion room, synthesize the gas outlet of smoke combustion room The air inlet of connection turbine b, the turbine b and generator b power connectors, high-temperature flue gas promote turbine b to generate electricity, turbine The gas outlet connection waste heat boiler of machine b, the venthole connection steam turbine of the waste heat boiler, the steam turbine is moved with generator b Power connects, the high pressure superheated steam pushing turbine that waste heat boiler is discharged generates electricity, the discharge outlet of the waste heat boiler, steam turbine Discharge outlet connects respectively the water inlet of feedwater input system；

The heating of synthesis gas vapour gas heat exchanger is connected between the gas outlet of the turbine a and the water inlet of feedwater input system Passage, the heating of the passage of heat, synthesis gas vapour gas heat exchanger that adds of the passage of heat, vapor-water heat exchanger that adds of air vapour gas heat exchanger are led to Road, air vapour gas heat exchanger plus after passage of heat parallel connection again with the heating Tandem of vapor-water heat exchanger, synthesis flue gas combustion The heated passage for connecting synthesis gas vapour gas heat exchanger between the air inlet of room and the gas outlet of synthesis flue gas compressor is burnt, it is described mixed Connect the heated passage of air vapour gas heat exchanger between the second entrance of clutch and the gas outlet of pressure-air compressor, it is described low Connect the heated passage of air-water heat exchanger, the feedwater input system water outlet between pressure air compressor, pressure-air compressor Steam generator system, waste heat boiler are supplied water after that mouth is sequentially connected air-water heat exchanger plus the passage of heat, the heated passage of vapor-water heat exchanger.

2. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 1 and steam turbine combined generating system, its It is characterised by：The feedwater input system includes condenser, water pump, oxygen-eliminating device, the booster water pump being sequentially connected in series by pipeline, institute The discharge outlet for stating waste heat boiler is connected between water pump, oxygen-eliminating device by pipeline, feedwater is arranged between the water pump, oxygen-eliminating device defeated Enter the water inlet of system, the water inlet of the input system that feeds water connects water source by moisturizing pipeline, and the water inlet of the condenser leads to Piping connects the discharge outlet of steam turbine, and the delivery port of the booster water pump is the delivery port of feedwater input system.

3. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 1 and steam turbine combined generating system, its It is characterised by：The low-pressure air compressor, pressure-air compressor, turbine a, generator a power connector successively, and synchronously Rotate；It is described to synthesize flue gas compressor, turbine b, steam turbine, generator b power connector successively, and synchronous axial system.

4. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 1 and steam turbine combined generating system, its It is characterised by：The steam generator system includes boiler body, and the boiler body has cyclone dust removal room, furnace chamber a, furnace chamber b, described The lower end of cyclone dust removal room arranges smoke inlet, and the smoke inlet of cyclone dust removal room is connected with refuse gasification CIU, whirlwind Dirt pocket upper end is the 3rd exhanst gas outlet, and the 3rd exhanst gas outlet of cyclone dust removal room upper end is connected with the upper end of furnace chamber a, the stove The lower end connection of room a, furnace chamber b, the upper end of the furnace chamber b arranges waste gas outlet, circumferentially arranged with being in the cyclone dust removal room The water-cooling wall of annular, is provided with described superheater in the furnace chamber a, evaporimeter, the top of boiler body are provided with furnace chamber b Described drum is set, and the cyclone dust removal room, furnace chamber a, furnace chamber b are respectively positioned on drum lower section, and the drum is provided with carbonated drink and enters Mouthful, water separator is provided with drum, for separating steam water interface, drum connects entering for water-cooling wall by the first down-comer The mouth of a river, for exporting the water that water separator is isolated, drum is connected the water inlet of evaporimeter by the second down-comer, is used for The water that output water separator is isolated, the water-cooling wall, the venthole of evaporimeter connect entering for drum by steam pipe respectively Steam ports, for the high-temperature steam that flows back.

5. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 4 and steam turbine combined generating system, its It is characterised by：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, furnace chamber c Lower end arrange Waste gas outlet, the furnace chamber c Waste gas outlet connection flue gas purification system, the flue gas purification system bag Thick cleaning system, booster fan, the fine purifiation deduster being sequentially connected is included, the flue gas after purification feeds synthesis flue gas compressor.

6. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 5 and steam turbine combined generating system, its It is characterised by：The thick cleaning system includes aeration tower and deduster, and the fine purifiation deduster adopts Lei Shi Venturi scrubbings system System, including Venturi scrubber and cyclone separator, the aeration tower connects the Waste gas outlet of furnace chamber c, and aeration tower outlet connects Deduster is connect, then makees deep purifying into fine purifiation deduster after being pressurized by booster fan.

7. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 5 and steam turbine combined generating system, its It is characterised by：Economizer is provided with the furnace chamber c, the water inlet of the economizer is connected with the delivery port of feedwater input system, The delivery port of the economizer and the carbonated drink inlet communication of drum.

8. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 5 and steam turbine combined generating system, its It is characterised by：The refuse gasification CIU includes incinerator, circulation air feed system, and the incinerator includes stove Frame, and feed hopper, gasification furnace and the incinerator set gradually along feedstock direction on grate, the rear of gasification furnace is gasification furnace The cinder notch that falls, incinerator falls the front lower place of cinder notch positioned at gasification furnace, the rear of incinerator for incinerator slag notch, the grate Garbage pusher device is provided with, the garbage pusher device is located at the lower section of feed hopper, for the rubbish in feed hopper to be pushed into gasification In stove, the lower section of gasification furnace moving hearth and incinerator moving hearth be respectively arranged below with least one be independently arranged one Secondary air compartment, is provided with windrow seal section between the feed hopper, gasification furnace, on the grate part between the gasification furnace and incinerator Leave transition to fall slag section, the transition slag section that falls is provided with residue pusher, for the rubbish fallen in gasification furnace residue to be pushed away Enter in incinerator, the transition falling to be provided with slag section isolating door to be opened/closed, the isolating door is used for gasification furnace, incinerator Cut-off；The gasification furnace, incinerator include respectively furnace shell, moving hearth, and the forward and backward side of the gasification furnace is close by windrow respectively Envelope section, transition fall the sealing of slag section, and the transition falls slag section isolation gasification furnace, incinerator, makes gasification furnace, incinerator separate； The gasification furnace, incinerator are respectively provided with secondary confession air port respectively in arching upward shape on the face arch of the gasification furnace, rear arch, described The vault of gasification furnace arranges the first exhanst gas outlet, and the smoke inlet of the cyclone dust removal room is connected with the first exhanst gas outlet, described The vault of incinerator arranges 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 is by 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 the first blower fan connects the house steward of the first manifold, the arm of first manifold respectively with gasification furnace moving hearth under The smoke inlet connection of each air compartment of side, each secondary confession air port on gasification furnace and cyclone dust removal room, first discrimination It is respectively provided with the first regulating valve on each arm 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 arm of second manifold respectively with incinerator moving hearth below each First air The inlet end of room and dust arrester, outlet side connection, are respectively provided with the second regulating valve, institute on each arm of second manifold State cyclone dust removal room and be provided with some combustion airs and supply air port, some combustion airs are located at smoke inlet, the 3rd flue gas for air port Between outlet, also including the 3rd manifold, the house steward of the 3rd manifold connects with the gas outlet of the second blower fan, the 3rd manifold Each arm connect for air port with some combustion airs respectively, be respectively provided with the 3rd regulating valve on each arm of the 3rd manifold.

9. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 8 and steam turbine combined generating system, its It is characterised by：The furnace chamber a, furnace chamber b lower section is provided with common slag notch, and the lower end of the cyclone dust removal room is provided with from top to bottom The taper slag notch that radius diminishes, the common slag notch, taper slag notch are connected respectively with the burner hearth of gasification furnace.

10. a kind of refuse gasification combustion gas of multi-stage heat exchanger according to claim 8 and steam turbine combined generating system, its It is characterised by：Air preheater is provided with the furnace chamber c, the outlet side of 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.