CN105465793B - Double-deck stoker fired grate formula refuse gasification burns double boiler electricity generation system - Google Patents

Abstract

Double boiler electricity generation system is burned the invention discloses a kind of double-deck stoker fired grate formula refuse gasification, including double-deck refuse gasification incinerator, steam generator system, circulate air feed system, double-deck refuse gasification incinerator includes feed hopper, gasification furnace and incinerator, incinerator is located at the underface of gasification furnace, the feedstock direction of incinerator is opposite with the feedstock direction of gasification furnace, the upper end of gasification furnace, the upper end of incinerator sets exhanst gas outlet, steam generator system includes boiler body a, b, boiler body a has cyclone combustion chamber, furnace chamber a, b, cyclone combustion chamber smoke inlet connects gasification furnace exhanst gas outlet, boiler body b has the evaporator b being set on flue, superheater b, water-cooling wall b, superheater is set in furnace chamber a, evaporator is set in furnace chamber b, superheater is set in furnace chamber d, evaporator, the top of two boiler bodies sets drum.

Description

Double-deck stoker fired grate formula refuse gasification burns double boiler electricity generation system

Technical field

Burnt the invention belongs to solid waste incineration processing technology field, more particularly to double-deck stoker fired grate formula refuse gasification Burn double boiler electricity generation system.

Background technology

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

For many years, scientific research of the China to the gasification burning technology such as biomass, rubbish, be in progress a lot of, the base in laboratory Plinth research is a lot, also has application study, such as：Rotary kiln type, vertical and fluidized bed type destructive gasifying or temperature gasification and high melting skill Art etc..But Technique Popularizing is applied upper or 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, uses mechanical backstepping fire grate, forwards fire grate or combined fire grate wherein having in body of heater, 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, heat is reclaimed using boiler Amount, for generating electricity, heat supply, heating etc..

In summary, typical gasification burning and boiler plant technology maturation, respectively there is its own advantage, but actual in China The problem of needing to solve in and deficiency：

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. with being on the increase for refuse production, sanitary fill such as mountain, garbage treatment quantity must be effectively improved, It can just meet the market requirement.

3. in face of strict pollutant emission requirement, secondary pollution control is the technical key problem for 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 hair Electricity, whole transition heat efficiency losses are larger, handle identical quantity of refuse, relative reduction thermal losses and raising heat exchanger effectiveness can To improve the thermal efficiency.

For example following two patents of invention of existing incinerator：Multiple row sectional drive combined type domestic garbage incinerator (ZL200710092508.9) an open question and in two-stage garbage incinerator (ZL201010268376.2)：At rubbish heat Manage model comparision to fall behind, simply dry-burn-burn, solid combustion discharges the process of heat；Thermal chemical reaction is to aoxidize in stove Based on reaction, reduction reaction auxiliary is also easy to produce secondary pollution；When rubbish burns in stove, oxygen quotient is crossed greatly, First air, two Secondary wind infeed amount is big, and dust content is higher in flue gas, larger on heat reclaiming system and smoke processing system influence, easily product Ash, exhaust gas volumn is larger, reduces thermal conversion efficiency；The gasification furnace and incinerator not being separately provided, rubbish can only be handled by several times, Large-scale rubbish continuous gasification burning disposal can not be realized, garbage treatment quantity is smaller.

The content of the invention

Burned it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of double-deck stoker fired grate formula refuse gasification Double boiler electricity generation system, its rubbish conveying capacity is stronger, and garbage treatment quantity is bigger, can reduce thermal losses and improve heat exchange Efficiency, the organic efficiency of heat is higher, and can efficiently reduce pollutant discharge amount.

The object of the present invention is achieved like this：

A kind of double-deck stoker fired grate formula refuse gasification burning double boiler electricity generation system, including double-deck refuse gasification incinerator, Double boiler system, electricity generation system, circulation air feed system,

The double-deck refuse gasification incinerator includes grate, on the grate along feedstock direction be disposed with feed hopper, Be additionally provided with incinerator on gasification furnace, the grate, the incinerator is located at the underface of gasification furnace, the feedstock direction of incinerator with The feedstock direction of gasification furnace is on the contrary, the grate part between the feed bin discharge port external and gasification furnace charging aperture is close provided with windrow The grate part sealed between section, the charging aperture of the gasification furnace discharging opening and incinerator falls slag section provided with transition, and transition falls slag Section can form windrow sealing state, and the grate is provided with garbage pusher device, residue pusher, and the garbage pusher device, which is located at, to be given The lower section of feed bin, cutting somebody's hair for garbage pusher device is stretched into windrow seal section, for the rubbish in feed hopper to be pushed into gasification furnace, The residue pusher is located between gasification furnace and incinerator, and the cutting somebody's hair of residue pusher is stretched into transition and fallen in slag section, for will In the rubbish residue push-in incinerator fallen in gasification furnace, the gasification furnace, incinerator include furnace shell, moving hearth, institute respectively State the forward and backward side of gasification furnace and slag section sealing fallen by windrow seal section, transition respectively, the transition fall slag section isolation gasification furnace, Incinerator, makes gasification furnace, incinerator separate, the lower section of the gasification furnace moving hearth and the incinerator moving hearth Be respectively arranged below with least one air compartment being independently arranged, the gasification furnace, incinerator are respectively in arch upward shape, the gas Change the face arch of stove, secondary air feed mouthful is set respectively on rear arch, the vault of the gasification furnace sets the first exhanst gas outlet, described to burn The vault of stove sets the second exhanst gas outlet corresponding with an air compartment of the lower section of gasification furnace moving hearth, the second exhanst gas outlet with it is right The air compartment answered is connected by flue, and igniting combustion supporting hole is respectively equipped with the gasification furnace, incinerator；

The steam generator system, which includes boiler body a, boiler body b, the boiler body a, has cyclone combustion chamber, furnace chamber A, furnace chamber b, the lower end of the cyclone combustion chamber set smoke inlet, and the smoke inlet of cyclone combustion chamber and the first exhanst gas outlet connect Logical, cyclone combustion chamber upper end is the 3rd exhanst gas outlet, and the cyclone combustion chamber is described some provided with some combustion air air feeds mouthful Combustion air air feed mouthful is located between smoke inlet, the 3rd exhanst gas outlet, the 3rd exhanst gas outlet and the furnace chamber a of cyclone combustion chamber upper end Upper end connection, the furnace chamber a, furnace chamber b lower end connection, the upper end of the furnace chamber b sets waste gas outlet, the cyclone firing It is indoor circumferentially arranged with being provided with superheater a I, superheater a II, the superheater a in water-cooling wall a, the furnace chamber a in a ring I is provided with evaporator a in superheater a II top, furnace chamber b, and boiler body a top sets drum a, the whirlwind combustion Burning room, furnace chamber a, furnace chamber b are respectively positioned on below drum a, and the drum a is provided with carbonated drink import, and drum a passes through water separator Steam water interface is separated, drum a delivery port connects water-cooling wall a, evaporator a water inlet by pipeline respectively, for exporting The water that water separator is isolated, the water-cooling wall a, evaporator a venthole enter vapour by steam pipe connection drum a respectively Mouthful, for the high-temperature steam that flows back, the saturated vapor outlet of the drum a connects superheater a I, superheater a II by pipeline respectively Air intake, for the high-temperature steam of backflow to be inputted in superheater a I, superheater a II, the venthole of the superheater a I is defeated Go out high pressure superheated steam, vapours is pressed through in the venthole output of the superheater a II；

The boiler body b includes the evaporator b, superheater b II, overheat being sequentially sleeved at from top to bottom on flue Device b I, water-cooling wall b, boiler body b top set drum b, the evaporator b, superheater b I, superheater b II, water-cooling wall b It is respectively positioned on below drum b, the drum b is provided with carbonated drink import, drum b separates steam water interface by water separator, Drum b delivery port is by respectively by pipeline connection water-cooling wall b, evaporator b water inlet, for exporting water separator The water isolated, the water-cooling wall b, evaporator b venthole connect drum b air intake by steam pipe respectively, for flowing back High-temperature steam, the saturated vapor outlet of the drum b connects superheater b I, superheater b II air intake by pipeline respectively, uses Inputted in by the high-temperature steam of backflow in superheater b I, superheater b II, the venthole output high pressure superheater of the superheater b I steams Vapour, vapours is pressed through in the venthole output of the superheater b II；

The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, the first manifold, the second manifold, described The inlet end of dust arrester connects the house steward of the first manifold, the branch pipe of first manifold and the lower section of gasification furnace moving hearth Air compartment connection, the outlet side of the dust arrester is connected by pipeline with the inlet end of the first blower fan, first blower fan Outlet side connected by pipeline with furnace chamber b, the air inlet and atmosphere of second blower fan, the outlet of second blower fan The house steward of mouthful the second manifold of connection, the branch pipe of second manifold respectively with an air compartment below incinerator moving hearth, rotation Secondary air feed mouthful connection on each combustion air air feed of wind combustion chamber mouthful and gasification trimmer arch, rear arch, first manifold, the Regulating valve is set respectively on each branch pipe of two manifolds；

The electricity generation system includes steam turbine and the generator being connected with turbine power, and the steam turbine includes high pressure Cylinder, intermediate cylinder, low-pressure cylinder,

First order steam trap, first order high pressure vapour vapour heater, institute are set between the high-pressure cylinder, intermediate cylinder The output end of the input and high-pressure cylinder of stating first order steam trap is connected by pipeline, the steaming of first order steam trap Vapour output end is connected with the heated input of first order high pressure vapour vapour heater by pipeline, the first order high pressure vapour vapour heating The steam input by hot output terminal and intermediate cylinder of device is connected by pipeline, and is set between intermediate cylinder, low-pressure cylinder Two grades of steam traps, second level high pressure vapour vapour heaters, the input and intermediate cylinder of the second level steam trap are defeated Go out end to connect by pipeline, the steam output end of second level steam trap and second level high pressure vapour vapour heater by heat input End is connected by pipeline, and the steam input by hot output terminal and low-pressure cylinder of the second level high pressure vapour vapour heater passes through Pipeline is connected；

The steam output end of low-pressure cylinder is sequentially connected condenser, water pump, low pressure vapor heater, deoxygenation by pipeline Device, booster water pump, high pressure steam water heater, the heated input of the low pressure vapor heater are connected with water pump, low pressure vapor Heater is connected by hot output terminal with oxygen-eliminating device, and the input of oxygen-eliminating device is provided with moisturizing pipeline, the high pressure steam water heater Heated input be connected with booster water pump, high pressure steam water heater is passed through pipeline by hot output terminal and connects drum a, drum b Carbonated drink import, the water output end of the first order steam trap, the water output end of second level steam trap pass through respectively Pipeline connects the input of oxygen-eliminating device；

Also include high steam input pipe, middle pressure steam input pipe, the input of medium pressure steam input pipe was connected Hot device a II, superheater b II venthole, the output end of middle pressure steam input pipe connect the input of intermediate cylinder, the high pressure Input connection superheater a I, superheater b I venthole of steam input pipe, the output end point of the high steam input pipe Do not pass through the input of pipeline connection high-pressure cylinder, heating input, the second level high pressure vapour of first order high pressure vapour vapour heater The heating input of vapour heater, the heating output end of first order high pressure vapour vapour heater connects the heating of high pressure steam water heater Input, the heating output end of high pressure steam water heater connects the input of oxygen-eliminating device, second level high pressure vapour vapour heater plus Hot output terminal connects the heating input of low pressure vapor heater, the heating output end connection oxygen-eliminating device of low pressure vapor heater Input.

In order to make full use of the waste heat that high-pressure cylinder, intermediate cylinder have not been utilized, further, set on the high-pressure cylinder There is the first steam to take pipe, the first steam takes pipe to take steam to the output end of high-pressure cylinder, and the first steam takes the output end of pipe to pass through Pipeline connects the heating input of high pressure steam water heater, and medium pressure cylinder takes pipe provided with the second steam, and the second steam takes Pipe takes steam to the output end of intermediate cylinder, and the second steam takes the output end of pipe to connect adding for low pressure vapor heater by pipeline Heat input end.

In order to which the flue gas discharged to furnace chamber b carries out further heat recovery, heat recovery efficiency is improved, further Ground, the upper end that the boiler body a has furnace chamber c, the furnace chamber c is connected with the waste gas outlet of furnace chamber b upper ends, under furnace chamber c End sets Waste gas outlet.

Further, economizer is provided with the furnace chamber c, the water inlet of the economizer and the delivery port of booster water pump connect Logical, the delivery port of the economizer passes through pipeline and drum a, drum b carbonated drink inlet communication respectively.

Further, air preheater, the outlet side connection air preheater of second blower fan are provided with the furnace chamber c Air inlet, the gas outlet of air preheater connects the house steward of the second manifold.

In order to which the flue gas discharged to furnace chamber c carries out harmless treatment, further, the Waste gas outlet of the furnace chamber c connects Connect flue gas purification system, aeration tower that the flue gas purification system includes being sequentially connected in series along discharge directions, deduster, air-introduced machine, Chimney.

For the waste residue for discharging furnace chamber a, furnace chamber b, flue gas deposition is produced in cyclone firing room, and prevent waste residue effusion generation Pollution, it is preferable that common slag notch is provided with below the furnace chamber a, furnace chamber b, the upper end of the cyclone combustion chamber is provided with burning Room igniting combustion supporting hole, the lower end of cyclone combustion chamber provided with the taper slag notch that radius diminishes from top to bottom, the common slag notch, Taper slag notch is connected with the burner hearth of gasification furnace respectively.

In order that the high-temperature flue gas produced after burning is easily drained, and beneficial to the installation of pipeline, it is preferable that the flue gas Entrance, the 3rd exhanst gas outlet are located at the opposite side of cyclone combustion chamber circumferential wall；3rd exhanst gas outlet is justified along cyclone combustion chamber Perisporium is radially or tangentially set.

In order to prevent that wind is altered between gasification furnace, incinerator, it is preferable that the transition fall slag section on be provided with it is to be opened/closed every From door, the isolating door is used to separate gasification furnace, incinerator.

By adopting the above-described technical solution, the present invention has the advantages that：

1. being provided with windrow seal section between feed hopper, gasification furnace, make that in front of gasification furnace windrow sealing can be carried out, gasify Stove, the transition of incinerator, which fall slag section, can also form windrow sealing state, gasification furnace rear is formed windrow sealing, make gasification The heat preservation and insulation of stove more preferably, can prevent heat leak in refuse gasification burning process, save fuel.

2. gasification furnace, incinerator are provided separately, secondary air feed mouthful, gasification furnace are set respectively on the face arch of gasification furnace, rear arch Vault the first exhanst gas outlet is set, the vault of incinerator sets the second exhanst gas outlet, and the second exhanst gas outlet connects with flue Connect, circulation air feed system is more simplified, greatly reduce the impurity in gasification kiln gas, the cigarette of higher quality can be provided Gas, makes the utilization rate of flue gas higher, and the waste residue of discharge is less.

3. incinerator is located at the lower section of gasification furnace, the length and space hold of incinerator are substantially reduced.

4. present inventive concept is novel, garbage treatment quantity is big, and the rubbish bed of material undergoes on stoker fired grate to be dried, gasifies and residue Burn the stage, adapt to the characteristics such as China's house refuse water content height, complicated component, improve the energy in garbage processing procedure Pollutant discharge amount in transformation efficiency and reduction flue gas, effectively prevents secondary pollution, and can realize that large-scale rubbish is continuous Gasification burning processing, it is ensured that refuse gasification burns effect and lime-ash clinker ignition loss, relative to reduce thermal losses and improve heat exchange effect Rate, improves the thermal efficiency.

5. the first blower fan extracts the flue gas in gasification furnace First air room, it is introduced into furnace chamber b, makes full use of boiler body The waste heat that b has not been utilized；Second blower fan utilizes the waste gas discharged from furnace chamber c by air preheater, makes full use of boiler body a The waste heat not utilized.The wind of second blower fan bulging provides First air by the second manifold for incinerator, and is cyclone firing Room provides combustion air, incinerator residue is fully burnt, the synthesis flue gas in cyclone firing room fully burns.Second blower fan is bloated Wind provide Secondary Air by the second manifold for gasification furnace, rubbish is produced in gasification, gasification furnace containing a certain amount of The flue gas of synthesis gas, from the discharge of the first exhanst gas outlet, into cyclone combustion chamber processing links, cyclone combustion chamber provides high temperature cigarette Gas.The stoker fired grate formula refuse gasification incinerator garbage treatment quantity of this structure is big, and the rubbish bed of material can undergo on stoker fired grate Dry, gasification and residue burn the stage, adapt to the characteristics such as China's house refuse water content height, complicated component, improve rubbish Pollutant discharge amount in energy conversion efficiency and reduction flue gas in processing procedure, effectively prevents secondary pollution, and can realize Large-scale rubbish continuous gasification burning disposal, it is ensured that refuse gasification burns effect and lime-ash clinker ignition loss, relative to reduce heat waste Consumption and raising heat exchanger effectiveness, improve the thermal efficiency.

6. a steam generator system employs the structure of two boilers, fully the synthesis flue gas of the first exhanst gas outlet of burning release, The heat discharged using smoke combustion, and the heat for making full use of the second exhanst gas outlet to discharge, heat transfer loss are less, recuperation of heat It is more efficient.Synthesis gas is more abundant in cyclone firing Indoor Combustion, and the temperature produced of burning is higher, by the water-cooling wall a of annular On cyclone combustion chamber, relatively reduce thermal losses and improve heat exchanger effectiveness.The high temperature of refuse gasification outlet of still is closed Enter cyclone combustion chamber into gas flue gas, while the tangential air-supplied combustion-supporting flammable synthesis gas into cyclone combustion chamber, flue gas according to Secondary process cyclone combustion chamber, furnace chamber a, furnace chamber b, economizer and air preheater.The pre- hot condensed water of economizer is recycled, is preheated cold Solidifying water enters two boilers, and condensed water is heated in two water-cooling walls and two evaporators, forms saturated vapor and enters two vapour Bag, saturated vapor enters two superheaters after steam-water separation, and superheated steam output is thermally formed again, available for generating electricity, heat supply, Heating etc..Present inventive concept is novel, using cyclone-burning method, reduces fly ash content in flue gas；Syngas combustion temperature is high, Gas residence time is long, and pollutant is effectively decomposed, and reduces pollutant emission, realizes the synthesis gas after rubbish continuous gasification Burning disposal and heat recovery and utilization.

7. steam turbine can not be all converted to water by condenser using complete steam, and absorb the heat of steam release, The main function of oxygen-eliminating device is exactly that the oxygen and other gases in boiler feedwater are removed with it, it is ensured that the quality of feedwater, supercharging Water pump can improve hydraulic pressure, it is ensured that to the water supply capacity of water input system, electricity generation system heats low product by using high-grade steam Position steam and condensed water, improve utilization rate of waste heat, reduce thermal losses.

Brief description of the drawings

Fig. 1 is structural representation of the invention；

Fig. 2 is the structural representation of cyclone combustion chamber；

Fig. 3 is Fig. 2 schematic top plan view；

Fig. 4 is steam output device, the structural representation to water input system；

Fig. 5 is the structural representation of flue gas purification system；

Fig. 6 is the structural representation of double-deck refuse gasification incinerator.

Reference

1 is double-deck refuse gasification incinerator, and 101 be grate, and 102 be feed hopper, and 103 be gasification furnace, and 104 be incinerator, 105 be moving hearth, and 106 be garbage pusher device, and 107 be an air compartment, and 108 be windrow seal section, and 109 be that transition falls slag section, 110 be residue pusher, and 111 be isolating door, and 112 be the first exhanst gas outlet, and 113 be the second exhanst gas outlet, and 114 be igniting combustion supporting Hole, 115 be secondary air feed mouthful, and 116 be flue；

201 be dust arrester, and 202 be the first blower fan, and 203 be the second blower fan, and 204 be the first manifold, and 205 be the second discrimination Pipe；

3 be cyclone combustion chamber, and 301 be combustion chamber ignition combustion-supporting hole, and 302 be taper slag notch, and 303 be smoke inlet, 304 It is combustion air air feed mouthful for the 3rd exhanst gas outlet, 305；

4 be boiler body a, and 402 be furnace chamber a, and 403 be furnace chamber b, and 404 be furnace chamber c, and 405 be water-cooling wall a, and 406 be overheat Device a I, 409 be superheater a II, and 407 be evaporator a, and 408 be drum a, and 418 be economizer, and 419 be flue gas purification system, 420 It is deduster for aeration tower, 421,422 be air-introduced machine, and 423 be chimney, and 424 be air preheater；

5 be boiler body b, and 501 be furnace chamber d, and 502 be cyclone dust removal room, and 503 be water-cooling wall b, and 504 be superheater b I, 507 be superheater b II, and 505 be evaporator b, and 506 be drum b；

601 be high-pressure cylinder, and 602 be intermediate cylinder, and 603 be low-pressure cylinder, and 604 be first order steam trap, and 605 are First order high pressure vapour vapour heater, 606 be second level steam trap, and 607 be second level high pressure vapour vapour heater, and 608 be cold Condenser, 609 be water pump, and 610 be oxygen-eliminating device, and 611 be booster water pump, and 612 be moisturizing pipeline, and 613 be generator, and 614 be low pressure Steam water heater, 615 be high pressure steam water heater, and 616 be high steam input pipe, and 617 be middle pressure steam input pipe, and 618 are First steam takes pipe, and 619 be that the second steam takes pipe.

Embodiment

It is that double-deck stoker fired grate formula refuse gasification burns a kind of preferably real of double boiler electricity generation system referring to Fig. 1 to Fig. 6 Apply example, including double-deck refuse gasification incinerator 1, steam generator system, circulation air feed system, electricity generation system.

Referring to Fig. 6, including double-deck refuse gasification incinerator 1, the double-deck refuse gasification incinerator 1 includes grate 101, institute State to be disposed with feed hopper 102, gasification furnace 103, the grate 101 along feedstock direction on grate 101 and be additionally provided with incinerator 104, the incinerator 104 is located at the underface of gasification furnace 103, the feedstock direction of incinerator 104 and the charging side of gasification furnace 103 To on the contrary, gasification furnace 103 is mainly that the carbon-containing part of rubbish is gasified, and discharge flammable gasification flue gas and rubbish is residual Slag, incinerator 104 is substantially carried out the burning processing of carbon residue, and discharges innoxious lime-ash.The discharging opening of feed hopper 102 and gas The part of grate 101 changed between the charging aperture of stove 103 is provided with windrow seal section 108, the discharging opening of gasification furnace 103 and incinerator The part of grate 101 between 104 charging aperture falls slag section 109 provided with transition, and transition, which falls slag section 109, can form windrow sealing shape State.

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, Cutting somebody's hair for garbage pusher device 106 is stretched into windrow seal section 108, for the rubbish in feed hopper 102 to be pushed into gasification furnace 103 Interior, cutting somebody's hair for garbage pusher device 106 promotes half stroke in windrow seal section 108, and garbage raw material is put into from feed hopper 102 Under, garbage pusher device 106 is retreated, then is promoted, and pusher enters gasification furnace 103 in the formation windrow of windrow seal section 108 back and forth Mouth is in windrow sealing state, strengthens the sealing effectiveness of gasification furnace 103, solves garbage pusher device 106 and the easy gas leakage of feed hopper 102 Problem.When needing the complete prepurging to dispose all rubbish, the forward impelling half stroke again of garbage pusher device 106 is complete by rubbish It is pushed into gasification furnace 103, the entrance of gasification furnace 103 is lost windrow sealing effectiveness.

The grate 101 is provided with residue pusher 110, and the residue pusher 110 is located at gasification furnace 103 and incinerator Between 104, the cutting somebody's hair of residue pusher 110 is stretched into transition and fallen in slag section 109, and the rubbish for will be fallen in gasification furnace 103 is residual In slag push-in incinerator 104.Transition falls slag section 109 and can be at windrow sealing state when accumulating rubbish residue, strengthens gasification furnace 103 sealing effectiveness, the problem of solving string wind between gasification furnace 103, incinerator 104.In the present embodiment, the transition falls slag section Isolating door 111 to be opened/closed is provided with 109, the isolating door 111 is used to separate gasification furnace 103, incinerator 104.Rising Stove initial stage needs between control gasification furnace 103 and incinerator when altering wind, to close isolating door 111, stacks a certain amount of when falling slag section Residue formation windrow sealing after, isolating door 111 can be kept to open, with lower section set residue pusher 110 coordinate use, To realize rubbish continuous gasification burning disposal.

The gasification furnace 103, incinerator 104 respectively include furnace shell, moving hearth 105, the gasification furnace 103 it is forward and backward Side falls slag section 109 by windrow seal section 108, transition respectively and sealed, and the transition falls slag section 109 and isolates gasification furnace 103, burns Stove 104, makes gasification furnace 103, incinerator 104 separate.The moving hearth 105 of gasification furnace 103 and incinerator 104, which is used, to be divided The stoker fired grate formula moving hearth 105 of Duan Duli drivings, the fire grate of stoker fired grate formula moving hearth 105 be by moving grate plate with Fixed grate plate forward laps, it is spaced collect form, adjacent multigroup moving grate plate is connected by pull bar, using a set of Drive device drives.Stoker fired grate formula moving hearth 105 is as the carrier of conveying garbage, and embodiments thereof can be all types of shiftings Dynamic siege 105, such as chain-plate type, drum-type, multisection type fire grate system.

The lower section of the moving hearth 105 of gasification furnace 103 and the lower section difference of the moving hearth 105 of the incinerator 104 Provided with the air compartment 107 that at least one is independently arranged, the corresponding fire grate of an air compartment 107, drive with the first half of gasification furnace 103 Dynamic device, it is corresponding with the air compartment 107 that gasification furnace 103 is latter half of as the dryer section of the moving hearth 105 of gasification furnace 103 Fire grate, drive device as the moving hearth 105 of gasification furnace 103 gasification section.Dryer section, the gasification section of the siege 105 of gasification furnace 103 The 1-2 independent air feeds of air compartment 107 can be respectively adopted, a 3-4 independent air compartments 107 can also be respectively adopted and supply Wind.Certainly, fire grate, drive device and an air compartment 107 can not be also correspondingly arranged, preferably the bed of material on regulation moving hearth 105 Movement and air distribution relation.Incinerator 104 can burn rear lime-ash from slag notch using the 1-4 independent air feeds of air compartment 107 Exclude, into next step treatment process.

The gasification furnace 103, incinerator 104 are respectively in the shape that arches upward, in order to preferably adapt to the installing space in factory, institute The face arch for stating gasification furnace 103 is flat construction, or, the face arch of gasification furnace 103 is inclined upwardly structure for rear end.The gasification furnace Secondary air feed mouthful 115 is set respectively on 103 face arch, rear arch, and the vault of the gasification furnace 103 sets the first exhanst gas outlet 112, Gasification flue gas in gasification furnace 103 is excluded from the first exhanst gas outlet 112, the furnace cavity of gasification furnace 103 and traditional waste incineration Stove is compared, relatively reduced；Forward and backward arch diminishes with the relative position of moving hearth 105, reduces the space of incinerator occupancy, also more It is easy to insulation, reduces the amount of leakage of heat, be conducive to rubbish fully to gasify.The vault of the incinerator 104 sets the second cigarette Gas outlet is 113 corresponding with an air compartment 107 of the lower section of the moving hearth 105 of gasification furnace 103, the second exhanst gas outlet 113 with it is corresponding An air compartment 107 connected by flue 116, be respectively equipped with igniting combustion supporting hole on the gasification furnace 103, incinerator 104 114；

Referring to Fig. 1 to Fig. 3, the steam generator system includes boiler body a4, boiler body b5, and the boiler body a4 has Cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403, furnace chamber c404, the lower end of the cyclone combustion chamber 3 set smoke inlet 303, The smoke inlet 303 of the cyclone combustion chamber 3 is connected by pipeline with the first exhanst gas outlet 112 of gasification furnace 103, cyclone firing The upper end of room 3 is the 3rd exhanst gas outlet 304, and the smoke inlet 303, the 3rd exhanst gas outlet 304 are located at the circumferential wall of cyclone combustion chamber 3 Opposite side, the top of cyclone combustion chamber 3 sets combustion chamber ignition combustion-supporting hole 301.In order that flue gas, combustion air are in cyclone firing Be sufficiently mixed in room 3, burn after discharged from the 3rd exhanst gas outlet 304, the cyclone combustion chamber 3 be provided with some combustion air air feeds Mouth 305, some combustion air air feeds mouthful 305 are located between smoke inlet 303, the 3rd exhanst gas outlet 304.The smoke inlet 303rd, the 3rd exhanst gas outlet 304, combustion air air feed mouthful 305 are radially or tangentially set along the circumferential wall of cyclone combustion chamber 3.Cyclone firing 3rd exhanst gas outlet 304 of the upper end of room 3 is connected with furnace chamber a402 upper end, the furnace chamber a402, furnace chamber b403 lower end connection, The upper end of the furnace chamber b403 sets waste gas outlet, and the lower end of the cyclone combustion chamber 3 is provided with the cone that radius diminishes from top to bottom Shape slag notch 302, the taper slag notch 302 is connected with the burner hearth of gasification furnace 103.Set below the furnace chamber a402, furnace chamber b403 There is 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 afterbody changeover portion of the taper slag notch 302 with the burner hearth of gasification furnace 103 is connected.

It is circumferentially with water-cooling wall a405, the furnace chamber a in a ring and was provided with along inwall in the cyclone combustion chamber 3 Hot device a I 406, superheater a II 409, the superheater a I 406, which is located in superheater a II 409 top, furnace chamber b403, to be provided with Evaporator a407, boiler body a4 top set drum a408, the cyclone combustion chamber 3, furnace chamber a402, the equal positions of furnace chamber b403 Below drum a408, the drum a408 is provided with carbonated drink import, and vapour is provided with steam water interface, drum a408 for inputting Water separation device, for separating steam water interface, drum a408 delivery port by respectively by pipeline connect water-cooling wall a405, Evaporator a407 water inlet, for exporting the water that water separator is isolated, the water-cooling wall a405, evaporator a407 Venthole connects drum a408 air intake by steam pipe respectively, and for the high-temperature steam that flows back, the saturated vapor of the drum a goes out Mouth connects superheater a I 406, superheater a II 409 air intake by pipeline respectively, for the high-temperature steam of backflow to be inputted In hot device a I 406, superheater a II 409, the venthole output high pressure superheated steam of the superheater a I 406, the superheater a Vapours is pressed through in II 409 venthole output；

The boiler body b5 includes evaporator b505, the superheater b II being sequentially sleeved at from top to bottom on flue 507th, superheater b I 504, water-cooling wall b503, boiler body b top set drum b506, the evaporator b, superheater b I 504th, superheater b II 507, water-cooling wall b are respectively positioned on below drum b, and the drum b506 is provided with carbonated drink import, and drum b506 leads to Cross water separator separation steam water interface, drum b506 delivery port by respectively by pipeline connect water-cooling wall b503, Evaporator b505 water inlet, for exporting the water that water separator is isolated, the water-cooling wall b503, evaporator b505 Venthole connects drum b506 air intake by steam pipe respectively, and for the high-temperature steam that flows back, the saturated vapor of the drum b goes out Mouth connects superheater b I 504, superheater b II 507 air intake by pipeline respectively, for the high-temperature steam of backflow to be inputted In hot device b I 504, superheater b II 507, the venthole output high pressure superheated steam of the superheater b I 504, the superheater b Vapours is pressed through in II 507 venthole output.

Referring to Fig. 4, electricity generation system 6 includes steam turbine and the generator 613 being connected with turbine power, the steam turbine Including including high-pressure cylinder 601, intermediate cylinder 602, low-pressure cylinder 603, being set between the high-pressure cylinder 601, intermediate cylinder 602 Put first order steam trap 604, first order high pressure vapour vapour heater 605, the input of the first order steam trap 604 It is connected with the output end of high-pressure cylinder 601 by pipeline, steam output end and the first order high pressure of first order steam trap 604 The heated input of vapour vapour heater 605 is connected by pipeline, the first order high pressure vapour vapour heater 605 by hot output terminal It is connected with the steam input of intermediate cylinder 602 by pipeline, second level water is set between intermediate cylinder 602, low-pressure cylinder 603 Vapour separator 606, second level high pressure vapour vapour heater 607, the input and intermediate cylinder of the second level steam trap 606 602 output ends are connected by pipeline, steam output end and the second level high pressure vapour vapour heater of second level steam trap 606 607 heated input is connected by pipeline, the second level high pressure vapour vapour heater 607 by hot output terminal and low-pressure cylinder 603 steam input is connected by pipeline.

The steam input of low-pressure cylinder 603 is sequentially connected condenser 608, water pump 609, low pressure vapor by pipeline and heated Device 614, oxygen-eliminating device 610, booster water pump 611, high pressure steam water heater 615, the low pressure vapor heater 614 by heat input End is connected with water pump 609, and low pressure vapor heater 614 is connected by hot output terminal with oxygen-eliminating device 610, the input of oxygen-eliminating device 610 End is provided with moisturizing pipeline 612, and the heated input of the high pressure steam water heater 615 is connected with booster water pump 611, high pressure carbonated drink Heater 615 by hot output terminal export boiler feed water, the water output end of the first order steam trap 604, second level water The water output end of vapour separator 606 connects the input of oxygen-eliminating device 610 by pipeline respectively.

Also include high steam input pipe, middle pressure steam input pipe, the input of medium pressure steam input pipe 617 is connected Superheater a II 409, superheater b II 507 venthole, the output end of middle pressure steam input pipe connect the input of intermediate cylinder, Input connection superheater a I 406, superheater b I 504 venthole of the high steam input pipe, the high steam are defeated The heating for entering input, first order high pressure vapour vapour heater 605 that pipe 616 connects high-pressure cylinder 601 by pipeline respectively is inputted End, the heating input of second level high pressure vapour vapour heater 607, the heating output end of first order high pressure vapour vapour heater 605 connect The heating input of high pressure steam water heater 615 is connect, the heating output end connection oxygen-eliminating device 610 of high pressure steam water heater 615 Input, the heating input of the heating output end connection low pressure vapor heater 614 of second level high pressure vapour vapour heater 607, The heating output end of low pressure vapor heater 614 connects the input of oxygen-eliminating device 610.

The high-pressure cylinder 601 takes pipe 618 provided with the first steam, and the first steam takes pipe 618 to the defeated of high-pressure cylinder 601 Go out end and take steam, the first steam takes the output end of pipe 618 to connect the heating input of high pressure steam water heater 615 by pipeline, Medium pressure cylinder 602 takes pipe 619 provided with the second steam, and the second steam takes the output end of pipe 619 to intermediate cylinder 602 to take steaming Vapour, the second steam takes the output end of pipe 619 to connect the heating input of low pressure vapor heater 614 by pipeline.

The upper end of the furnace chamber c404 is connected with the waste gas outlet of furnace chamber b403 upper ends, and furnace chamber c404 lower end sets waste gas Economizer 418, air preheater, the water inlet and booster water pump of the economizer 418 are provided with floss hole, the furnace chamber c404 416 delivery port connection, the delivery port of the economizer 418 and the carbonated drink inlet communication of drum 408.Referring to Fig. 5, furnace chamber c404 Waste gas outlet connection flue gas purification system 419, the flue gas purification system 419 includes along washing that discharge directions are sequentially connected in series Gas tower 420, deduster 421, air-introduced machine 422, chimney 423.

It is described circulation air feed system include dust arrester 201, the first blower fan 202, the second blower fan 203, the first manifold 204, Second manifold 205, it is preferable that the dust arrester 201 is cyclone separator or hot precipitator；First blower fan 202 For high-temperature blower, beneficial to working in high temperature environments, second blower fan 203 is air blower.The air inlet of the dust arrester 201 The house steward of the first manifold 204 of end connection, the branch pipe of first manifold 204 and an air compartment of the lower section of gasification furnace moving hearth Connection, the outlet side of the dust arrester 201 is connected by pipeline with the inlet end of the first blower fan 202, first blower fan 202 Outlet side connected by pipeline with furnace chamber b, the air inlet and atmosphere of second blower fan 203, second blower fan 203 Gas outlet connect the house steward of the second manifold 205, the branch pipe of second manifold 205 respectively with below incinerator moving hearth Secondary air feed mouthful connection on air compartment, each combustion air air feed mouthful of cyclone combustion chamber and gasification trimmer arch, rear arch, it is described Regulating valve is set respectively on first manifold 204, each branch pipe of the second manifold 205.In the present embodiment, the outlet of second blower fan The air inlet of end connection air preheater, the gas outlet of air preheater connects the house steward of the second manifold.

The First air of incinerator 104 is：The air of certain pressure is blasted stoker fired grate formula by the second manifold and moved by air blower Below dynamic siege 105 in a corresponding air compartment 107, then by an air holes spray penetration residue on moving hearth 105, enter Row residual burning, passes through the regulation valve regulation wind supply quantity on correspondence branch pipe.The First air of gasification furnace 103 is：What incinerator 104 was produced Flue gas enters in the corresponding air compartment 107 in the lower section of 103 moving hearth of gasification furnace 105 through flue 116, then passes through mobile stove An air holes spray penetration rubbish on bed 105, is gasified, and passes through the regulation valve regulation wind supply quantity on each branch pipe of correspondence.Gas Changing the Secondary Air of stove 103 is：The air of certain pressure is blasted the burner hearth of gasification furnace 103, its spray-hole by air blower by the second manifold It is arranged on the face arch of gasification furnace 103 and rear arch.Secondary air feed mouthful 115 is provided with forward and backward arch, gasification efficiency is improved, strengthens cigarette Polymer substance is decomposed in gas.In the igniting combustion supporting hole 114 being provided with gasification furnace rear arch, furnace lifting, baker and stable gasification furnace 103 Temperature is used, and air blower also provides the combustion-supporting air feed of cyclone combustion chamber by the second manifold.

The origin of heat that boiler body a is reclaimed is in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, and synthesis gas flue gas enters Enter cyclone combustion chamber, while the tangential air-supplied combustion-supporting flammable synthesis gas into cyclone combustion chamber, flue gas sequentially passes through whirlwind Combustion chamber, furnace chamber a, furnace chamber b, economizer and air preheater.

The origin of heat that boiler body b is reclaimed enters gasification in the high-temperature flue gas after residual burning after refuse gasification, flue gas The flue of air feed of stove, flue gas sequentially passes through water-cooling wall, superheater, evaporator, provides gasifying agent for gasification furnace, then Unnecessary flue gas in First air room is introduced by dust arrester by high-temperature blower, furnace chamber b is fed after dedusting.

The pre- hot condensed water of economizer is recycled, pre- hot condensed water enters boiler body a and boiler body b, and condensed water is in water Heated in cold wall and evaporator, formation saturated vapor enters saturated vapor after drum, steam-water separation and enters superheater, heats again Form superheated steam output, available for generating electricity, heat supply, heating etc..

Steam turbine gradient energy-saving electricity generation system：High steam from Boiler High Pressure superheater enters high-pressure cylinder and promotes vapour Turbine generates electricity；High-pressure cylinder steam (vapor) outlet connects first order steam-water separator, and steam adds into first order high pressure vapour vapour after separation Hot device, outlet middle pressure steam is sent out with pressing the middle pressure steam of superheater to collect in boiler into intermediate cylinder pushing turbine Electricity；Intermediate cylinder steam (vapor) outlet connects second level steam-water separator, and steam enters second level high pressure vapour vapour heater after separation, goes out Mouth low-pressure steam generates electricity into low-pressure cylinder pushing turbine.

Take steam to collect with high steam of the first order high pressure vapour vapour heater after in high-pressure cylinder and enter high pressure Condensed water is formed after steam water heater, heating condensate water and returns oxygen-eliminating device；Steam and second level high pressure vapour vapour are taken in intermediate cylinder High steam of the heater after, which collects to enter after low pressure vapor heater, heating condensate water, forms condensed water time oxygen-eliminating device； The condensed water isolated in steam-water separator returns oxygen-eliminating device.

Low-pressure cylinder steam (vapor) outlet connects condenser, enters low pressure vapor heater by water pump pressurization after steam is condensed, Condensed water formation after heating enters oxygen-eliminating device；Utilization of condensed water booster water pump pressurizes after deoxygenation, feeds high pressure steam water heater,

Low-grade steam, condensation water and air are heated with high-grade steam, utilization rate of waste heat is improved, reduces loss.

A kind of double-deck stoker fired grate formula refuse gasification burns the waste disposal method of double boiler electricity generation system, this method press with Lower step is carried out：

Step A, the gate for closing double-deck refuse gasification incinerator 1 and atmospheric vent, start double-deck stoker fired grate formula rubbish Incinerator 1, feed hopper 102 is put into by garbage raw material, and the pusher back and forth of garbage pusher device 106 will fall from feed hopper 102 Under garbage raw material push-in feed hopper 102, the windrow seal section 108 between gasification furnace 103, make the formation heap of windrow seal section 108 Expect sealing state, unnecessary rubbish falls into the moving hearth 105 of gasification furnace 103, and the moving hearth 105 of gasification furnace 103 works, will Rubbish is conveyed into transition and falls slag section 109, and transition is fallen the rubbish in slag section 109 and is pushed into by the pusher back and forth of residue pusher 110 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 be accumulated to required thickness：0.6-0.8m, during baker, the rubbish accumulated can protect moving hearth 105, prevent scaling loss siege 105.Stop feeding intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 and incinerator 104 stops 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 Communicated with the burner hearth of incinerator 104, in the presence of start-up burner, furnace lifting is carried out to gasification furnace 103 and incinerator 104, dried Stove, treats that this process stabilization is completed, gasification furnace 103 and the burner hearth of incinerator 104 is reached 600-700 DEG C of predetermined temperature；Baker Purpose be in order to remove the Natural Water and the crystallization water in lining, in order to avoid when going into operation due to furnace temperature rise it is too fast, moisture content is largely swollen It is swollen to cause body of heater spalling, bubbling or deformation even furnace wall to collapse, influence the intensity and 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, wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, Negative pressure, thickness of feed layer etc. in stove), fed intake to feed hopper 102, the work conveying garbage of moving hearth 105 of gasification furnace 103, rubbish Burning is proceeded by the burner hearth of gasification furnace 103, rubbish residue falls in transition to be accumulated to form windrow sealing at slag section 109, is 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, regulation gasification furnace 103, incinerator 104 and each technological parameter (the pusher speed for circulating air feed system 2 Degree, fire grate speed, wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, negative pressure, thickness of feed layer in stove Deng), gasification furnace 103 gradually gasifies to rubbish, while adjusting each technological parameter of cyclone combustion chamber 3, and gasification temperature is stable Between 700-800 DEG C, make the stable high-temperature flue gas for producing the synthesis gas containing 10%-20% of gasification furnace 103, gasification furnace 103 gasifies In stable condition progress low temperature, middle temperature or high-temperature gasification.Make the fired state temperature stabilization of incinerator 104 to more than 850 DEG C, it is high Warm flue gas enters air compartment of gasification furnace from the second exhanst gas outlet correspondence, feeds gasification furnace, and the flue gas of cyclone combustion chamber 3 the 3rd goes out 304 temperature stabilizations of mouth realize rubbish continuous gasification burning disposal to more than 850 DEG C.

Step D, need to overhaul or during blowing out, stop feeding intake, regulation gasification furnace 103, incinerator 104, cyclone combustion chamber 3 and The technological parameter of air feed system 2 is circulated, gasification furnace 103 is gradually restored to fired state, after rubbish and rubbish residue are burnt, Close double-deck refuse gasification incinerator 1 and circulation air feed system 2.

Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be Various changes are made to it in form and in details, without departing from claims of the present invention limited range.

Claims (9)

1. a kind of double-deck stoker fired grate formula refuse gasification burns double boiler electricity generation system, it is characterised in that：Including double-deck rubbish gas Change incinerator, double boiler system, electricity generation system, circulation air feed system,

The double-deck refuse gasification incinerator includes grate, is disposed with feed hopper, gasification along feedstock direction on the grate Incinerator is additionally provided with stove, the grate, the incinerator is located at the underface of gasification furnace, the feedstock direction of incinerator and gasification The feedstock direction of stove is on the contrary, the grate part between the feed bin discharge port external and gasification furnace charging aperture is sealed provided with windrow Grate part between section, the charging aperture of the gasification furnace discharging opening and incinerator falls slag section provided with transition, and transition falls slag section Windrow sealing state can be formed, the grate is provided with garbage pusher device, residue pusher, and the garbage pusher device is located at feed The lower section in storehouse, cutting somebody's hair for garbage pusher device is stretched into windrow seal section, for the rubbish in feed hopper to be pushed into gasification furnace, institute State residue pusher to be located between gasification furnace and incinerator, the cutting somebody's hair of residue pusher is stretched into transition and fallen in slag section, for by gas Change in the rubbish residue push-in incinerator fallen in stove, the gasification furnace, incinerator include furnace shell, moving hearth respectively, described The forward and backward side of gasification furnace falls slag section sealing by windrow seal section, transition respectively, and the transition falls slag section isolation gasification furnace, combustion Cinder stove, makes gasification furnace, incinerator separate, the lower section of the gasification furnace moving hearth and the incinerator moving hearth At least one air compartment being independently arranged is respectively arranged below with, the gasification furnace, incinerator are respectively in arch upward shape, the gasification Secondary air feed mouthful is set respectively on the face arch of stove, rear arch, and the vault of the gasification furnace sets the first exhanst gas outlet, the incinerator Vault set the second exhanst gas outlet it is corresponding with an air compartment of the lower section of gasification furnace moving hearth, the second exhanst gas outlet with it is corresponding An air compartment connected by flue, igniting combustion supporting hole is respectively equipped with the gasification furnace, incinerator；

The double boiler system includes boiler body a, boiler body b, the boiler body a have cyclone combustion chamber, furnace chamber a, Furnace chamber b, the lower end of the cyclone combustion chamber sets smoke inlet, and the smoke inlet of cyclone combustion chamber and the first exhanst gas outlet connect Logical, cyclone combustion chamber upper end is the 3rd exhanst gas outlet, and the cyclone combustion chamber is described some provided with some combustion air air feeds mouthful Combustion air air feed mouthful is located between smoke inlet, the 3rd exhanst gas outlet, the 3rd exhanst gas outlet and the furnace chamber a of cyclone combustion chamber upper end Upper end connection, the furnace chamber a, furnace chamber b lower end connection, the upper end of the furnace chamber b sets waste gas outlet, the cyclone firing It is indoor circumferentially arranged with being provided with superheater a I, superheater a II, the superheater a in water-cooling wall a, the furnace chamber a in a ring I is provided with evaporator a in superheater a II top, furnace chamber b, and boiler body a top sets drum a, the whirlwind combustion Burning room, furnace chamber a, furnace chamber b are respectively positioned on below drum a, and the drum a is provided with carbonated drink import, and drum a passes through water separator Steam water interface is separated, drum a delivery port connects water-cooling wall a, evaporator a water inlet by pipeline respectively, for exporting The water that water separator is isolated, the water-cooling wall a, evaporator a venthole enter vapour by steam pipe connection drum a respectively Mouthful, for the high-temperature steam that flows back, the saturated vapor outlet of the drum a connects superheater a I, superheater a II by pipeline respectively Air intake, for the high-temperature steam of backflow to be inputted in superheater a I, superheater a II, the venthole of the superheater a I is defeated Go out high pressure superheated steam, vapours is pressed through in the venthole output of the superheater a II；

The boiler body b includes evaporator b, superheater b II, the superheater b being sequentially sleeved at from top to bottom on flue Ith, water-cooling wall b, boiler body b top set drum b, the evaporator b, superheater b I, superheater b II, the equal positions of water-cooling wall b Below drum b, the drum b is provided with carbonated drink import, and drum b separates steam water interface, drum b by water separator Delivery port by the way that water-cooling wall b, evaporator b water inlet is connected by pipeline respectively, for exporting water separator separation The water gone out, the water-cooling wall b, evaporator b venthole connect drum b air intake by steam pipe respectively, for the high temperature that flows back Steam, the saturated vapor outlet of the drum b connects superheater b I, superheater b II air intake by pipeline respectively, for inciting somebody to action In high-temperature steam input superheater b I, the superheater b II of backflow, the venthole output high pressure superheated steam of the superheater b I, Vapours is pressed through in the venthole output of the superheater b II；

The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, the first manifold, the second manifold, the dedusting The inlet end of device connects the house steward of the first manifold, and the branch pipe of first manifold and the lower section of gasification furnace moving hearth are once Air compartment is connected, the outlet side of the dust arrester is connected by pipeline with the inlet end of the first blower fan, and first blower fan goes out Gas end is connected by pipeline with furnace chamber b, the air inlet and atmosphere of second blower fan, and the gas outlet of second blower fan connects The house steward of the second manifold is met, the branch pipe of second manifold fires with an air compartment below incinerator moving hearth, whirlwind respectively Burn the secondary air feed mouthful connection on each combustion air air feed mouthful and gasification trimmer arch, rear arch of room, first manifold, the second discrimination Regulating valve is set respectively on each branch pipe of pipe；

The electricity generation system includes steam turbine and the generator being connected with turbine power, and the steam turbine includes high pressure vapour Cylinder, intermediate cylinder, low-pressure cylinder,

First order steam trap, first order high pressure vapour vapour heater be set between the high-pressure cylinder, intermediate cylinder, described the The input of one-level steam trap and the output end of high-pressure cylinder are connected by pipeline, and the steam of first order steam trap is defeated Go out end to be connected by pipeline with the heated input of first order high pressure vapour vapour heater, the first order high pressure vapour vapour heater Connected by the steam input of hot output terminal and intermediate cylinder by pipeline, the second level is set between intermediate cylinder, low-pressure cylinder Steam trap, second level high pressure vapour vapour heater, input and the intermediate cylinder output end of the second level steam trap Connected by pipeline, the steam output end of second level steam trap leads to the heated input of second level high pressure vapour vapour heater Piping is connected, and the steam input by hot output terminal and low-pressure cylinder of the second level high pressure vapour vapour heater passes through pipeline Connection；

The steam output end of low-pressure cylinder is sequentially connected condenser, water pump, low pressure vapor heater, oxygen-eliminating device, increasing by pipeline Water pump, high pressure steam water heater, the heated input of the low pressure vapor heater are connected with water pump, low pressure vapor heater Be connected by hot output terminal with oxygen-eliminating device, the input of oxygen-eliminating device is provided with moisturizing pipeline, the high pressure steam water heater it is heated Input is connected with booster water pump, the carbonated drink for being connected drum a, drum b by pipeline by hot output terminal of high pressure steam water heater Import, the water output end of the first order steam trap, the water output end of second level steam trap are connected by pipeline respectively Connect the input of oxygen-eliminating device；

Also include high steam input pipe, middle pressure steam input pipe, the input connection superheater a of medium pressure steam input pipe IIth, superheater b II venthole, the output end of middle pressure steam input pipe connects the input of intermediate cylinder, the high steam Input connection superheater a I, superheater b I venthole of input pipe, the output end of the high steam input pipe are led to respectively Input, the heating input of first order high pressure vapour vapour heater, the second level high pressure vapour vapour of piping connection high-pressure cylinder add The heating input of hot device, the heating input of the heating output end connection high pressure steam water heater of first order high pressure vapour vapour heater End, the heating output end of high pressure steam water heater connects the input of oxygen-eliminating device, and the heating of second level high pressure vapour vapour heater is defeated Go out the heating input of end connection low pressure vapor heater, the heating output end of low pressure vapor heater connects the input of oxygen-eliminating device End.

2. double-deck stoker fired grate formula refuse gasification according to claim 1 burns double boiler electricity generation system, it is characterised in that： The high-pressure cylinder takes pipe provided with the first steam, and the first steam takes pipe to take steam, the first steam to the output end of high-pressure cylinder The output end of pipe is taken to connect the heating input of high pressure steam water heater by pipeline, medium pressure cylinder is provided with the second steam Pipe is taken, the second steam takes pipe to take steam to the output end of intermediate cylinder, and the second steam takes the output end of pipe to connect low by pipeline Press the heating input of steam water heater.

3. double-deck stoker fired grate formula refuse gasification according to claim 1 burns double boiler electricity generation system, it is characterised in that： The transition, which falls, is provided with isolating door to be opened/closed in slag section, the isolating door is used to separate gasification furnace, incinerator.

4. double-deck stoker fired grate formula refuse gasification according to claim 1 burns double boiler electricity generation system, it is characterised in that： The upper end that the boiler body a has furnace chamber c, the furnace chamber c is connected with the waste gas outlet of furnace chamber b upper ends, and furnace chamber c lower end is set Put Waste gas outlet.

5. double-deck stoker fired grate formula refuse gasification according to claim 4 burns double boiler electricity generation system, it is characterised in that： Economizer is provided with the furnace chamber c, the water inlet of the economizer is connected with the delivery port of booster water pump, the economizer goes out The mouth of a river passes through pipeline and drum a, drum b carbonated drink inlet communication respectively.

6. double-deck stoker fired grate formula refuse gasification according to claim 4 burns double boiler electricity generation system, it is characterised in 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.

7. double-deck stoker fired grate formula refuse gasification according to claim 4 burns double boiler electricity generation system, it is characterised in that： The Waste gas outlet connection flue gas purification system of the furnace chamber c, the flue gas purification system includes being sequentially connected in series along discharge directions Aeration tower, deduster, air-introduced machine, chimney.

8. double-deck stoker fired grate formula refuse gasification according to claim 1 burns double boiler electricity generation system, it is characterised in that： Common slag notch is provided with below the furnace chamber a, furnace chamber b, the upper end of the cyclone combustion chamber is provided with combustion chamber ignition combustion-supporting hole, The lower end of cyclone combustion chamber is provided with the taper slag notch that radius diminishes from top to bottom, the common slag notch, taper slag notch point Do not connected with the burner hearth of gasification furnace.

9. double-deck stoker fired grate formula refuse gasification according to claim 1 burns double boiler electricity generation system, it is characterised in that： The smoke inlet, the 3rd exhanst gas outlet are located at the opposite side of cyclone combustion chamber circumferential wall；3rd exhanst gas outlet is along whirlwind Combustion chamber circumferential wall is radially or tangentially set.