CN105444182B - Double-deck stoker fired grate formula refuse gasification burning boiler system - Google Patents

Abstract

The invention discloses a kind of double-deck stoker fired grate formula refuse gasification burning boiler system, 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, boiler body has interconnected cyclone combustion chamber, furnace chamber a, furnace chamber b, cyclone firing sets water-cooling wall in room, superheater is set in furnace chamber a, evaporator is set in furnace chamber b, the top of boiler body sets drum, drum is provided with carbonated drink import, drum connects water-cooling wall, the water inlet of evaporator is used to export water, water-cooling wall, the venthole connection drum air intake flowback steam of evaporator, the saturated vapor outlet of drum exports superheated steam by superheater.

Description

Double-deck stoker fired grate formula refuse gasification burning boiler 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 Enamelware pot furnace 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 Steam generator system, its rubbish conveying capacity is stronger, and garbage treatment quantity is bigger, can reduce thermal losses and improve heat exchanger effectiveness, 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 boiler system, including double-deck refuse gasification incinerator, boiler system 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, the combustion The vault of cinder 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 and A corresponding air compartment is connected by flue, and igniting combustion supporting hole is respectively equipped with the gasification furnace, incinerator；

The steam generator system includes boiler body, and the boiler body has cyclone combustion chamber, furnace chamber a, furnace chamber b, described The lower end of cyclone combustion chamber sets smoke inlet, and the smoke inlet of cyclone combustion chamber is connected with the first exhanst gas outlet, cyclone firing Room upper end is the 3rd exhanst gas outlet, and the cyclone combustion chamber is provided with some combustion air air feeds mouthful, some combustion air air feeds Mouth is located between smoke inlet, the 3rd exhanst gas outlet, and the 3rd exhanst gas outlet of cyclone combustion chamber upper end connects with furnace chamber a upper end It is logical, the furnace chamber a, furnace chamber b lower end connection, the upper end of the furnace chamber b was set in waste gas outlet, the cyclone firing room along week To provided with water-cooling wall in a ring, it is provided with the furnace chamber a in superheater, furnace chamber b and is provided with evaporator, the top of boiler body End sets drum, and the cyclone combustion chamber, furnace chamber a, furnace chamber b are respectively positioned on below drum, and the drum is provided with carbonated drink import, vapour Water separator is provided with bag, for separating steam water interface, drum connects the water inlet of water-cooling wall by the first down-comer, For exporting the water that water separator is isolated, drum connects the water inlet of evaporator by the second down-comer, for exporting The water that water separator is isolated, the water-cooling wall, the venthole of evaporator connect the air intake of drum by steam pipe respectively, For the high-temperature steam that flows back, the saturated vapor outlet of the drum connects the air intake of superheater by pipeline, for that will flow back High-temperature steam input superheater in, the venthole of superheater output superheated steam；

The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, the first manifold, the second manifold, the 3rd Manifold, the 4th manifold, the inlet end of the dust arrester connect the house steward of the 4th manifold, the branch pipe of the 4th manifold and gasification 4th regulating valve, the dedusting dress are set on the air compartment connection of the lower section of stove moving hearth, the branch pipe of the 4th manifold The outlet side put is connected by pipeline with the inlet end of the first blower fan, and the outlet side of first blower fan connects the total of the first manifold Pipe, the branch pipe of first manifold respectively with the secondary air feed mouthful on cyclone combustion chamber smoke inlet, gasification trimmer arch, rear arch Connection, sets the first regulating valve on each branch pipe of first manifold respectively, the air inlet and atmosphere of second blower fan, The gas outlet of second blower fan connects the second manifold, the house steward of the 3rd manifold, the branch pipe of second manifold respectively with flue gas The second tune is set respectively on air compartment connection below pipeline and incinerator moving hearth, each branch pipe of second manifold Valve is saved, each branch pipe of the 3rd manifold is connected with each combustion air air feed mouthful of cyclone combustion chamber respectively, each of the 3rd manifold 3rd regulating valve is set respectively on pipe.

Further, in addition to steam output device, to water input system, the venthole of the superheater by pipeline to Steam output device exports superheated steam, the condenser for including being sequentially connected in series by pipeline to water input system, water pump, removes Oxygen device, booster water pump, water source is connected between the water pump, oxygen-eliminating device by moisturizing pipeline, and the water inlet of the condenser passes through Pipeline connects the discharge outlet of steam output device, and the delivery port of the booster water pump connects the carbonated drink import of drum by pipeline.

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 is exactly that the oxygen and other gases in boiler feedwater are removed with it, it is ensured that the quality of feedwater, is increased Water pump can improve hydraulic pressure, it is ensured that, can be to steam output device to water input system to the water supply capacity of water input system The water of discharge carries out further heat recovery, improves heat recovery efficiency.

In order to utilize superheated steam generation, it is preferable that the steam output device is steam turbine.

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 has furnace chamber c, the furnace chamber c is connected with the waste gas outlet of furnace chamber b upper ends, furnace chamber c lower end Waste gas outlet is set.

Further, economizer is provided with the furnace chamber c, the water inlet of the economizer and the delivery port of booster water pump connect It is logical, the delivery port of the economizer and the carbonated drink inlet communication of drum.

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 second manifold, the house steward of the 3rd 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. air blower blast air for incinerator provide First air pass through correspondence pipeline on second regulation valve regulation air feed Amount, makes incinerator residue fully burn；Air blower blasts air and provides temperature adjustment air feed for flue, by correspondence pipeline Second regulation valve regulation wind supply quantity, makes flue provide an air compartment of gasification furnace the First air of preference temperature, then, high Warm air machine extracts the flue gas in the First air room of gasification furnace, passes through the wind of the 4th regulation valve regulation flue gas on the 4th manifold branch pipe Pressure, after temperature-adjustment pressure-adjustment and cyclone collection flying dust, the flue gas for forming certain pressure supplies the Secondary Air of gasification furnace, leads to The the first regulation valve regulation wind supply quantity crossed on the first manifold correspondence branch pipe, makes rubbish in gasification furnace produce gasification, 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.

6. the water-cooling wall of annular is arranged on cyclone combustion chamber by a steam generator system, synthesis gas is in cyclone firing Indoor Combustion More abundant, the temperature produced of burning is higher, relatively reduces thermal losses and improves heat exchanger effectiveness.This steam generator system is reclaimed Origin of heat in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas enters cyclone combustion chamber, while to rotation Tangential air-supplied combustion-supporting flammable synthesis gas in wind combustion chamber, flue gas sequentially passes through cyclone combustion chamber, furnace chamber a, furnace chamber b, section Hot device and air preheater.The pre- hot condensed water of economizer is recycled, pre- hot condensed water enters boiler part, and condensed water is in water-cooling wall Heated with evaporator, formation saturated vapor enters saturated vapor after drum, steam-water separation and enters superheater, is thermally formed again Superheated steam is exported, available for generating electricity, heat supply, heating etc..Present inventive concept is novel, using cyclone-burning method, reduces cigarette Fly ash content in gas；Syngas combustion temperature is high, and gas residence time is long, and pollutant is effectively decomposed, and reduces pollutant row Put, realize synthesis gas burning disposal and heat recovery and utilization after rubbish continuous gasification.

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 double-deck refuse gasification incinerator and its structural representation for circulating air feed system.

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；

2 be circulation air feed system, and 201 be dust arrester, and 202 be the first blower fan, and 203 be the second blower fan, and 204 be the first discrimination Pipe, 205 be the second manifold, and 206 be the 3rd manifold, and 207 be the first regulating valve, and 208 be the second regulating valve, and 209 be the 3rd regulation Valve, 210 be the 4th manifold, and 211 be the 4th regulating valve；

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, and 402 be furnace chamber a, and 403 be furnace chamber b, and 404 be furnace chamber c, and 405 be water-cooling wall, and 406 be superheater, 407 be evaporator, and 408 be drum, and 409 be the first down-comer, and 410 be the second down-comer, and 411 be steam output device, and 412 are To water input system, 413 be condenser, and 414 be water pump, and 415 be oxygen-eliminating device, and 416 be booster water pump, and 417 be moisturizing pipeline, 418 be economizer, and 419 be flue gas purification system, and 420 be aeration tower, and 421 be deduster, and 422 be air-introduced machine, and 423 be chimney, 424 be air preheater.

Embodiment

It is a kind of preferred embodiment of double-deck stoker fired grate formula refuse gasification burning boiler system referring to Fig. 1 to Fig. 6, Including double-deck refuse gasification incinerator 1, steam generator system, circulation air feed system 2.

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 one Cover drive device driving.Stoker fired grate formula moving hearth 105 is as the carrier of conveying garbage, and embodiments thereof can be all types of Moving hearth 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.The dryer section of the moving hearth 105 of gasification furnace 103, gas The 1-2 independent air feeds of air compartment 107 can be respectively adopted by changing section, and a 3-4 independent air compartments can also be respectively adopted 107 air feeds.Certainly, fire grate, drive device and an air compartment 107 can not be also correspondingly arranged, preferably on regulation moving hearth 105 Bed of material movement and air distribution relation.Incinerator 104 can burn rear lime-ash from going out using the independent 1-4 air feeds of air compartment 107 Cinder notch is excluded, 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. 5, the steam generator system include boiler body 4, the boiler body 4 have 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 cyclone firing The smoke inlet 303 of room 3 is connected by pipeline with the first exhanst gas outlet 112 of gasification furnace 103, and the upper end of cyclone combustion chamber 3 is the Three exhanst gas outlets 304, the smoke inlet 303, the 3rd exhanst gas outlet 304 are located at the opposite side of the circumferential wall of cyclone combustion chamber 3, rotation The top of wind combustion chamber 3 sets combustion chamber ignition combustion-supporting hole 301.In order that flue gas, combustion air are fully mixed in cyclone combustion chamber 3 Discharged after conjunction, burning from the 3rd exhanst gas outlet 304, the cyclone combustion chamber 3 is described provided with some combustion air air feeds mouthful 305 Some combustion air air feeds mouthful 305 are located between smoke inlet 303, the 3rd exhanst gas outlet 304.The smoke inlet 303, the 3rd cigarette Gas outlet 304, combustion air air feed mouthful 305 are radially or tangentially set along the circumferential wall of cyclone combustion chamber 3.The upper end of cyclone combustion chamber 3 3rd exhanst gas outlet 304 is connected with furnace chamber a402 upper end, the furnace chamber a402, furnace chamber b403 lower end connection, the furnace chamber B403 upper end sets waste gas outlet, and the lower end of the cyclone combustion chamber 3 is provided with the taper slag notch that radius diminishes from top to bottom 302, the taper slag notch 302 is connected with the burner hearth of gasification furnace 103.It is provided with jointly below the furnace chamber a402, furnace chamber b403 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 Afterbody changeover portion of the slag notch 302 with the burner hearth of gasification furnace 103 is connected.

It is provided with the interior water-cooling wall 405 being circumferentially with along inwall in a ring of the cyclone combustion chamber 3, the furnace chamber a402 Evaporator 407 is provided with superheater 406, furnace chamber b403, the top of boiler body 4 sets drum 408, the cyclone combustion chamber 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, are mixed for inputting 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 passes through the second down-comer 410 The water inlet of evaporator 407 is connected, for exporting the water that water separator is isolated, the water-cooling wall 405, evaporator 407 Venthole the air intake of drum 408 is connected by steam pipe respectively, for the high-temperature steam that flows back, the saturation of the drum 408 is steamed Vapor outlet connects the air intake of superheater 406 by pipeline, described for the high-temperature steam of backflow to be inputted in superheater 406 The venthole output superheated steam of superheater 406.

In the present embodiment, steam generator system also includes steam output device 411, to water input system 412, in the present embodiment, The steam output device 411 is steam turbine.The venthole of the superheater was exported by pipeline to steam output device 411 Vapours, it is described to water input system 412 include be sequentially connected in series by pipeline condenser 413, water pump 414, oxygen-eliminating device 415, Booster water pump 416, water source is connected between the water pump 414, oxygen-eliminating device 415 by moisturizing pipeline 417, the condenser 413 Water inlet connects the discharge outlet of steam output device 411 by pipeline, and the delivery port of the booster water pump 416 is connected by pipeline The carbonated drink import of drum 408.

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.Furnace chamber c404 waste gas row Put mouth connection flue gas purification system 419, the flue gas purification system 419 include be sequentially connected in series along discharge directions aeration tower 420, Deduster 421, air-introduced machine 422, chimney 423.

The circulation air feed system 2 includes dust arrester 201, the first blower fan 202, the second blower fan 203, in order to effectively right The high-temperature flue gas that incinerator 104 is discharged carries out dedusting, it is preferable that the dust arrester 201 is that cyclone separator or high temperature are removed Dirt device；First blower fan 202 is high-temperature blower, and beneficial to working in high temperature environments, second blower fan 203 is air blower. The inlet end of the dust arrester 201 connects the house steward of the 4th manifold 210, the branch pipe and gasification furnace of the 4th manifold 210 Air compartment 107 of the lower section of 103 moving hearths 105 is connected, and the 4th regulating valve is set on the branch pipe of the 4th manifold 210 211, 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 connect the house steward of the first manifold 204, the branch pipe of first manifold 204 respectively with the face arch of gasification furnace 103, rear arch Secondary air feed mouthfuls 115 connect, first regulating valve 207, second wind are set respectively on each branch pipe of first manifold 204 The air inlet of machine 203 and material pit atmosphere, the gas outlet of second blower fan 203 connect the house steward of the second manifold 205, institute State the branch pipe of the second manifold 205 respectively with flue 116 and an air compartment 107 of the lower section of 104 moving hearth of incinerator 105 Second regulating valve 208 is set respectively on connection, each branch pipe of second manifold 205.

Air blower blasts air and provides First air by the second regulation valve regulation wind supply quantity on correspondence pipeline for incinerator, Incinerator residue is set fully to burn；Air blower blasts air and provides temperature adjustment air feed for flue 116, by correspondence pipeline Second regulation valve regulation wind supply quantity, makes flue 116 provide an air compartment of gasification furnace the First air of preference temperature, so Afterwards, high-temperature blower extracts the flue gas in the First air room of gasification furnace, passes through the 4th regulation valve regulation cigarette on the 4th manifold branch pipe The blast of gas, after temperature-adjustment pressure-adjustment and cyclone collection flying dust, forms the two of the flue gas supply gasification furnace of certain pressure Secondary wind, by the first regulation valve regulation wind supply quantity on the first manifold correspondence branch pipe, makes rubbish in gasification furnace produce gasification, contains The flue gas of a certain amount of synthesis gas, from the discharge of the first exhanst gas outlet, into cyclone combustion chamber processing links, cyclone combustion chamber provides high Warm flue gas.

The First air of gasification furnace 103 is：The flue gas that incinerator 104 is produced enters gasification furnace 103 through flue 116 and moves stove In the corresponding air compartment 107 in the lower section of bed 105, then by an air holes spray penetration rubbish on moving hearth 105, enter promoting the circulation of qi Change, wind supply quantity is adjusted by the first regulating valve 207 on each branch pipe of correspondence.The Secondary Air of gasification furnace 103 is：High-temperature blower extracts gas Change the flue gas in an air compartment 107 of stove 103, pass through the blast of the 4th regulation valve regulation flue gas on the 4th manifold branch pipe, warp Cross after temperature-adjustment pressure-adjustment and cyclone collection flying dust, the flue gas for forming certain pressure blasts the burner hearth of gasification furnace 103, its spray-hole 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.The First air of incinerator 104 is：Air blower 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 second regulating valve 208 on each branch pipe of correspondence.

Fig. 2 is the structural representation of cyclone combustion chamber 3.The upper end of the cyclone combustion chamber 3 is combustion-supporting provided with combustion chamber ignition Hole 301, the lower end of cyclone combustion chamber 3 is provided with the taper slag notch 302 that radius diminishes from top to bottom, and the cyclone combustion chamber 3 is justified The top of perisporium sets smoke inlet 303, and the bottom of the circumferential wall of cyclone combustion chamber 3 sets the 3rd exhanst gas outlet 304, described Some combustion air air feeds mouthful 305 are uniformly provided with the circumferential wall of cyclone combustion chamber 3, each combustion air air feed mouthful 305 is respectively positioned on flue gas Between entrance 303, the 3rd exhanst gas outlet 304.The smoke inlet 303, the 3rd exhanst gas outlet 304 are justified positioned at cyclone combustion chamber 3 The opposite side of perisporium；3rd exhanst gas outlet 304 is radially or tangentially set along the circumferential wall of cyclone combustion chamber 3.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 with each combustion air air feed mouthful 305 respectively, and the 3rd regulating valve 209 is set respectively on each branch pipe of the 3rd manifold 206.This reality Apply in example, the outlet side of second blower fan connects the air inlet of air preheater, the gas outlet connection second of air preheater The house steward of manifold, the 3rd manifold.The smoke inlet 303 of cyclone combustion chamber 3 and combustion-supporting air feed mouthful are arranged at cyclone combustion chamber 3 Can be that the flue gas in cyclone combustion chamber 3 is longer with air mixture time, mixing is more uniformly distributed, more fully in circumferential wall Burning.The combustion-supporting air feed of cyclone combustion chamber 3, which is air blower, to be blasted combustion-supporting air feed mouth by the air of certain pressure and is injected into whirlwind combustion Room 3 is burnt, combustion-supporting air feed approach axis can be radially or tangentially；Carry out syngas combustion.Meanwhile, high-temperature blower extracts incinerator 104 flue gas produces certain pressure and blasts the corresponding air compartment 107 in the lower section of 103 stoker fired grate formula moving hearth of gasification furnace 105 With the secondary air chamber on the forward and backward arch of gasification furnace 103, remainder flue gas, institute have not been utilized in order to what is extracted using high-temperature blower Stating the first manifold 204 also has a branch pipe being connected with cyclone combustion chamber smoke inlet, and the branch pipe is provided with corresponding first Regulating valve.What high-temperature blower was extracted has not utilized remainder flue gas, then is injected into rotation by the smoke inlet of cyclone combustion chamber 3 Wind combustion chamber 3, carries out syngas combustion, and by the corresponding first regulation valve regulation wind supply quantity, this structure can reduce thermal losses With raising heat exchanger effectiveness, the organic efficiency of heat is substantially increased, and pollutant discharge amount can be efficiently reduced.

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

The pre- hot condensed water of economizer is recycled, pre- hot condensed water enters boiler part, and condensed water is in water-cooling wall and evaporator Middle heating, formation saturated vapor enters saturated vapor after drum, steam-water separation and enters superheater, and superheated steam is thermally formed again Output, available for generating electricity, heat supply, heating etc..

A kind of waste disposal method of double-deck stoker fired grate formula refuse gasification burning boiler system, this method is according to the following steps Carry out：

Step A, the gate for closing double-deck refuse gasification incinerator 1 and atmospheric vent, start double-deck stoker fired grate formula rubbish Double-deck refuse gasification incinerator 1, feed hopper 102 is put into by garbage raw material, the pusher back and forth of garbage pusher device 106, will to The garbage raw material that feed bin 102 is fallen is pushed into the windrow seal section 108 between feed hopper 102, gasification furnace 103, makes windrow seal section 108 form windrow sealing state, and unnecessary rubbish falls into the moving hearth 105 of gasification furnace 103, the moving hearth of gasification furnace 103 105 work, are conveyed into transition by rubbish and fall slag section 109, transition is fallen slag section 109 by the pusher back and forth of residue pusher 110 On rubbish push-in incinerator 104 in, the moving hearth 105 of incinerator 104 work conveying garbage, until rubbish is in gasification furnace 103rd, the moving hearth 105 of incinerator 104 is accumulated to required thickness：0.6-0.8m, during baker, the rubbish accumulated can be protected Moving hearth 105 is protected, scaling loss moving hearth 105 is prevented.Stop feeding intake to feed hopper 102, gasification furnace 103 and incinerator 104 Moving hearth 105 is stopped, then, with igniting combustion supporting hole 114 of the start-up burner by gasification furnace 103 and incinerator 104 The burner hearth with gasification furnace 103 and incinerator 104 is communicated respectively, in the presence of start-up burner, to gasification furnace 103 and incinerator 104 carry out furnace lifting, baker, treat that this process stabilization is completed, gasification furnace 103 and the burner hearth of incinerator 104 is reached predetermined temperature 600-700℃；The purpose of baker 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 Too fast, largely expansion causes body of heater spalling, bubbling or deformation even furnace wall to collapse to moisture content, influences the intensity of heating furnace furnace wall and makes Use the life-span.

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 (10)

1. a kind of double-deck stoker fired grate formula refuse gasification burning boiler system, it is characterised in that：Burned including double-deck refuse gasification Stove, steam generator 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 steam generator system includes boiler body, and the boiler body has cyclone combustion chamber, furnace chamber a, furnace chamber b, the whirlwind The lower end of combustion chamber sets smoke inlet, and the smoke inlet of cyclone combustion chamber is connected with the first exhanst gas outlet, on cyclone combustion chamber Hold as the 3rd exhanst gas outlet, the cyclone combustion chamber is provided with some combustion air air feeds mouthful, some combustion air air feed mouthful positions Between smoke inlet, the 3rd exhanst gas outlet, the 3rd exhanst gas outlet of cyclone combustion chamber upper end is connected with furnace chamber a upper end, institute Furnace chamber a, furnace chamber b lower end connection are stated, the upper end of the furnace chamber b, which is set in waste gas outlet, the cyclone firing room, circumferentially to be set Have to be provided with superheater, furnace chamber b in water-cooling wall in a ring, the furnace chamber a and be provided with evaporator, the top of boiler body is set Drum is put, the cyclone combustion chamber, furnace chamber a, furnace chamber b are respectively positioned on below drum, and the drum is provided with carbonated drink import, drum Provided with water separator, for separating steam water interface, drum is connected the water inlet of water-cooling wall by the first down-comer, is used for The water that output water separator is isolated, drum connects the water inlet of evaporator by the second down-comer, for exporting carbonated drink The water that separator is isolated, the water-cooling wall, the venthole of evaporator connect the air intake of drum by steam pipe respectively, are used for Flow back high-temperature steam, and the saturated vapor outlet of the drum is by the air intake of pipeline connection superheater, for by the height of backflow In warm steam input superheater, the venthole output superheated steam of the superheater；

The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, the first manifold, the second manifold, the 3rd discrimination Pipe, the 4th manifold, the inlet end of the dust arrester connect the house steward of the 4th manifold, the branch pipe and gasification furnace of the 4th manifold The 4th regulating valve, the dust arrester are set on the air compartment connection of the lower section of moving hearth, the branch pipe of the 4th manifold Outlet side be connected by pipeline with the inlet end of the first blower fan, the outlet side of first blower fan connects the total of the first manifold Pipe, the branch pipe of first manifold connects with the secondary air feed mouthful on cyclone combustion chamber smoke inlet, gasification trimmer arch, rear arch respectively It is logical, the first regulating valve, the air inlet and atmosphere of second blower fan, institute are set respectively on each branch pipe of first manifold The gas outlet for stating the second blower fan connects the second manifold, the house steward of the 3rd manifold, the branch pipe of second manifold respectively with fume pipe The second regulation is set respectively on air compartment connection below road and incinerator moving hearth, each branch pipe of second manifold Valve, each branch pipe of the 3rd manifold is connected with each combustion air air feed mouthful of cyclone combustion chamber respectively, each branch pipe of the 3rd manifold It is upper that 3rd regulating valve is set respectively.

2. double-deck stoker fired grate formula refuse gasification burning boiler system according to claim 1, it is characterised in that：Also include Steam output device, to water input system, the venthole of the superheater is steamed by pipeline to steam output device output overheat Vapour, condenser, water pump, oxygen-eliminating device, the booster water pump for including being sequentially connected in series by pipeline to water input system, the water Water source is connected by moisturizing pipeline between pump, oxygen-eliminating device, the water inlet of the condenser connects steam output device by pipeline Discharge outlet, the delivery port of the booster water pump passes through the carbonated drink import that pipeline connects drum.

3. double-deck stoker fired grate formula refuse gasification burning boiler system according to claim 2, it is characterised in that：It is described to steam Vapour output device is steam turbine.

4. double-deck stoker fired grate formula refuse gasification burning boiler system according to claim 2, it is characterised in that：The pot The upper end that furnace body 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 sets waste gas Floss hole.

5. double-deck stoker fired grate formula refuse gasification burning boiler system according to claim 4, it is characterised in that：The stove Economizer is provided with the c of room, the water inlet of the economizer connect with the delivery port of booster water pump, the delivery port of the economizer and The carbonated drink inlet communication of drum.

6. double-deck stoker fired grate formula refuse gasification burning boiler system according to claim 4, it is characterised in that：The stove It is provided with air preheater in the c of room, the outlet side of second blower fan connects the air inlet of air preheater, air preheater goes out Gas port connects the second manifold, the house steward of the 3rd manifold.

7. double-deck stoker fired grate formula refuse gasification burning boiler system according to claim 4, it is characterised in that：The stove Room c Waste gas outlet connection flue gas purification system, the flue gas purification system includes the gas washing being sequentially connected in series along discharge directions Tower, deduster, air-introduced machine, chimney.

8. double-deck stoker fired grate formula refuse gasification burning boiler system according to claim 1, it is characterised in that：The stove Common slag notch is provided with below room a, furnace chamber b, the upper end of the cyclone combustion chamber is provided with combustion chamber ignition combustion-supporting hole, whirlwind combustion Burn the lower end of room provided with radius diminishes from top to bottom taper slag notch, the common slag notch, taper slag notch respectively with gas Change the burner hearth connection of stove.

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

10. double-deck stoker fired grate formula refuse gasification burning boiler system according to claim 1, it is characterised in that：It is described 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.