CN205261572U - Mechanical stoker formula waste gasification burns burning furnace's circular air supplying system - Google Patents

Abstract

The utility model discloses a mechanical stoker formula waste gasification burns burning furnace's circular air supplying system, including the gasifier with fire the cinder stove, the plenum is established one time to gasifier, the below of firing cinder stove siege, secondary air feed mouth, first exhanst gas outlet are established to the gasifier, it establishes the second exhanst gas outlet on the cinder stove to fire, still include dust collector, first fan, second fan, the dust collector inlet end is connected with the second exhanst gas outlet, and the end of giving vent to anger is connected with the inlet end of first fan, and first fan is given vent to anger the end and is connected first manifold, the plenum of branch pipe and gasifier and the secondary air feed mouth intercommunication of first manifold, and the gas outlet connection second manifold of second fan, the branch pipe of second manifold and the plenum and the dust collector both ends of firing the cinder stove feed through. After using this circular air supplying system, can realize that the continuous gasification incineration of large -scale rubbish handles, garbage treatment amount is bigger, can reduce the heat loss and improve heat exchange efficiency, and thermal recovery efficiency is higher, and pollution abatement thing emission effectively.

Description

The circulation air feed system of stoker fired grate formula refuse gasification incinerator

Technical field

The utility model belongs to solid waste incineration processing technology field, relates in particular to stoker fired grate formula rubbishThe circulation air feed system of rubbish incinerator.

Background technology

Existing technology of garbage disposal mainly contains burning, sanitary landfills, compost, waste recovery etc. At rubbishRubbish is processed in routine techniques, and burning disposal has decrement successful, and innoxious thoroughly occupation of land amount is little,The advantages such as waste heat energy is utilized, and secondary pollution is few, meet the strategic requirement of China's sustainable development. ButTo the improving constantly of environmental requirement, how to strengthen the control of secondary pollution particularly important along with both at home and abroad.Therefore, refuse pyrolysis gasification burning technology is shifted onto on the road of industrial applications gradually, particularly forWhat domestic rubbish mainly adopted now is all kinds of incineration technologies, and the industrialization widely of gasification burning technology will be withCarrying out the technological innovation of domestic garbage disposal industry regenerates.

For many years, the scientific research of China to the gasification burning such as living beings, rubbish technology, make progress a lot of,The basic research in laboratory is a lot, also has application study, as: rotary kiln type, vertical and fluidized bed typeDestructive gasifying or temperature gasification and high fusion technology etc. But in Technique Popularizing application, still there is certain limitation, formerMaterial kind, garbage treatment quantity, secondary pollution control and economic benefit etc. are principal elements.

In existing burning process and equipment, fire grate type incinerator is various informative, and its application accounts for the whole worldThe more than 80% of the waste incineration total market size, wherein has and in body of heater, adopts mechanical type backstepping fire grate, forwardsFire grate or combined fire grate, also have the fire grates such as the chain-plate type of employing and drum-type.

In sum, typical incinerator, respectively has himself advantage, but in China's practical applicationNeed the problem and shortage solving:

1. the characteristic such as, complicated component high for China's house refuse water content, the utilization of moving hearth,Need emphasis to consider to the conveying capacity of rubbish.

2. along with being on the increase of refuse production, sanitary fill is as mountain, and garbage treatment quantity must be hadThe raising of effect, could meeting the market requirement.

3. in the face of strict pollutant emission requirement, secondary pollution control is the technical core that needs solutionProblem.

4. in order effectively to increase economic efficiency, in rubbish heat treatment process, the organic efficiency of heat needsImprove. Existing rubbish heat treatment technics conventionally adopts boiler to produce steam and shifts steam turbine power generation onto, wholeTransition heat efficiency losses is larger, processes identical quantity of refuse, relatively reduces thermal losses and improves heat exchange effectRate just can improve the thermal efficiency.

Existing incinerator is as following two patents of invention: multiple row sectional drive combined type domestic garbageIn incinerator (ZL200710092508.9) and two-stage garbage incinerator (ZL201010268376.2)An open question: rubbish heat treatment mode is relatively backward, be just dried-burns-burns, and solid combustion is releasedThe process of thermal discharge; In stove, thermal chemical reaction is taking oxidation reaction as main, and reduction reaction is auxiliary, easily produces twoInferior pollutant; When rubbish burns in stove, cross oxygen quotient large, wind, Secondary Air infeed amount are large, cigaretteIn gas, dust content is higher, larger on heat reclaiming system and smoke processing system impact, easily dust stratification,Exhaust gas volumn is larger, has reduced thermal conversion efficiency; There is no the gasification furnace and the incinerator that arrange separately, Zhi NengfenInferior disposal of refuse, cannot realize large-scale rubbish continuous gasification burning disposal, and garbage treatment quantity is less.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of stoker fired grate formula rubbish is providedThe circulation air feed system of incinerator, uses this circulation air feed system to burn stoker fired grate formula refuse gasificationBurn stove air feed post processing rubbish, garbage treatment quantity is larger, and can reduce thermal losses and improve heat exchanger effectiveness,The organic efficiency of heat is higher, and can effectively reduce pollutant discharge amount.

The purpose of this utility model is achieved in that

A circulation air feed system for stoker fired grate formula refuse gasification incinerator, comprises the gas of incineratorChange stove and incinerator, between gasification furnace and incinerator, can seal or be communicated with, the below of gasification furnace siege withAnd the below of incinerator siege is respectively equipped with at least one independently air compartment, the face arch of described gasification furnace,Secondary is set respectively for air port on rear arch, the vault of described gasification furnace arranges the first exhanst gas outlet, described combustionThe vault of cinder stove arranges the second exhanst gas outlet;

Also comprise dust arrester, the first blower fan, the second blower fan, the inlet end of described dust arrester is by pipeRoad is connected with the second exhanst gas outlet, and the outlet side of described dust arrester is by the air inlet of pipeline and the first blower fanEnd connects, and the outlet side of described the first blower fan connects the house steward of the first manifold, the arm of described the first manifoldRespectively with each air compartment of the below of gasification furnace moving hearth and gasification furnace face arch, rear arch on secondaryBe communicated with for air port, on each arm of described the first manifold, the first control valve be set respectively, described the second blower fanAir inlet be communicated with atmosphere, the gas outlet of described the second blower fan connects the house steward of the second manifold, describedThe arm of two manifolds respectively with each air compartment of incinerator moving hearth below and the air inlet of dust arresterEnd, outlet side are communicated with, and on each arm of described the second manifold, the second control valve are set respectively.

In order to reduce thermal losses and to improve heat exchanger effectiveness, make the organic efficiency of heat higher, for more fillingPoint the wind that utilizes the second blower fan to bloat, and be beneficial to meticulousr adjusting cyclone combustion chamber each several partIntake, preferably, also comprises cyclone combustion chamber, the 3rd manifold for second-time burning, described whirlwindCombustion chamber is provided with smoke inlet, the 3rd exhanst gas outlet and some combustion airs for air port, and described flue gas entersMouth is communicated with the first exhanst gas outlet by pipeline, and described the 3rd exhanst gas outlet is positioned at smoke inlet below, instituteStating some combustion airs supplies air port between smoke inlet, the 3rd exhanst gas outlet; Described the 3rd manifold totalPipe be communicated with the gas outlet of the second blower fan, each arm of described the 3rd manifold respectively with some combustion air air feedsMouth is communicated with, and the 3rd control valve is set respectively on each arm of the 3rd manifold.

The high-temperature flue gas of discharging in order to make full use of incinerator, puies forward high-octane utilization rate, preferably, and instituteAn arm stating the first manifold is communicated with the smoke inlet of cyclone combustion chamber, and this arm is provided with describedOne control valve.

For make flue gas, combustion air after the indoor abundant mixing of cyclone firing, burning from the 3rd exhanst gas outletDischarge, preferably, described smoke inlet is positioned at the top of cyclone combustion chamber circle wall, described the 3rd flue gasOutlet is positioned at the bottom of cyclone combustion chamber circle wall, and the lower end of described cyclone combustion chamber is provided with from top to bottom partlyThe taper slag notch that footpath diminishes.

For the high-temperature flue gas producing after making to burn is easily discharged, and be beneficial to the installation of pipeline, preferably,Described smoke inlet, the 3rd exhanst gas outlet are positioned at the opposition side of cyclone combustion chamber circle wall.

For flue gas, combustion air are mixed more fully cyclone firing is indoor, preferably, instituteState smoke inlet, the 3rd exhanst gas outlet, combustion air air feed opening's edge cyclone combustion chamber circle wall radially or tangentiallyArrange.

For the high-temperature flue gas of effectively incinerator being discharged carries out dedusting, preferably, described dust arresterFor cyclone separator or hot precipitator.

Work in order to be beneficial under corresponding environment, preferably, described the first blower fan is high-temperature blower, instituteStating the second blower fan is air blast.

Owing to having adopted technique scheme, the utlity model has following beneficial effect:

1. air blast blasts air provides wind and provides tune for cyclone separator, high-temperature blower for incineratorTemperature air feed, regulates wind supply quantity by the second control valve on corresponding pipeline, and incinerator residue is fully burnt;Then, high-temperature blower extracts the flue gas of incinerator, collects after flying dust shape through temperature adjustment and cyclone separatorBecome the flue gas of certain pressure to supply with wind and the Secondary Air of gasification furnace, adjust by first on corresponding pipelineJoint valve regulation wind supply quantity, makes rubbish in gasification furnace produce gasification, the flue gas that contains a certain amount of synthesis gas, fromThe first exhanst gas outlet is discharged, and enters cyclone combustion chamber processing links, and cyclone combustion chamber provides high-temperature flue gas.The utility model is novel, and garbage treatment quantity is large, and the rubbish bed of material experiences dry, gas on stoker fired grateIn the stage that burns of change and residue, adapt to the characteristics such as China's house refuse water content is high, complicated component, improvesEnergy conversion efficiency in garbage processing procedure and reduce pollutant discharge amount in flue gas, effectively prevent twoInferior pollution, and can realize large-scale rubbish continuous gasification burning disposal, ensure that refuse gasification burns effectFruit and the hot burn decrement rate of lime-ash, relatively reduce thermal losses and improve heat exchanger effectiveness, improved the thermal efficiency.

2. gasification furnace, incinerator divide and are arranged, and the vault of gasification furnace arranges the first exhanst gas outlet, incineratorVault arranges the second exhanst gas outlet, is beneficial to according to the difference of flue gas quality smoke treatment respectively, simultaneously favourableIn to flue gas ash removal, the more flue gas of high-quality can be provided, make the utilization rate of flue gas higher, discharge uselessSlag still less.

Brief description of the drawings

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

Fig. 2 is the structural representation of cyclone combustion chamber in Fig. 1.

Reference numeral

1 is incinerator, and 101 is grate, and 102 is feed hopper, and 103 is gasification furnace, and 104 is combustionCinder stove, 105 is siege, and 106 is garbage pusher device, and 107 is an air compartment, and 108 is windrow seal section,109 is the transition slag section that falls, and 110 is residue pusher, and 111 is isolating door, and 112 is the first exhanst gas outlet,113 is the second exhanst gas outlet, and 114 is igniting combustion supporting hole, and 115 for secondary is for air port, and 116 is slag notch,117 is the cinder notch that falls;

201 is dust arrester, and 202 is the first blower fan, and 203 is the second blower fan, and 204 is the first manifold,205 is the second manifold, and 206 is the 3rd manifold, and 207 is the first control valve, and 208 is the second control valve,209 is the 3rd control valve;

3 is cyclone combustion chamber, and 301 is igniting combustion supporting hole, combustion chamber, and 302 is taper slag notch, and 303 areSmoke inlet, 304 is the 3rd exhanst gas outlet, 305 for combustion air is for air port.

Detailed description of the invention

Referring to Fig. 1, for the one of the circulation air feed system of stoker fired grate formula refuse gasification incinerator preferably realExecute example, comprise incinerator 1, described incinerator 1 comprises grate 101, and at grate 101The upper feed hopper setting gradually along feedstock direction 102, gasification furnace 103 and incinerator 104, incinerator 104Rear be the slag notch of incinerator 104, gasification furnace 103 is mainly that rubbish carried out to gas containing charcoal partChange, and discharge flammable gasification flue gas and rubbish residue, incinerator 104 mainly carries out burning place of carbon residueReason, and discharge innoxious lime-ash. The siege 105 of gasification furnace 103 and incinerator 104 all adopts segmentationThe stoker fired grate formula moving hearth 105 of drive, the fire grate of stoker fired grate formula moving hearth 105 is by livingMoving fire grate plate and fixed grate plate forward lap, and collect and form alternately, adjacent many groups moving gratePlate connects by pull bar, adopts a set of drive unit to drive. Stoker fired grate formula moving hearth 105 is as defeatedSend the carrier of rubbish, its embodiment can be all types of moving hearths 105, as chain-plate type, drum-type,Multisection type fire grate system etc.

Described grate 101 is provided with garbage pusher device 106, and described garbage pusher device 106 is positioned at feed hopper102 below, for the rubbish in feed hopper 102 is pushed in gasification furnace 103, gasification furnace 103 movesThe below of the below of siege 105 and incinerator 104 moving hearths 105 is respectively equipped with at least one independentlyThe air compartment 107 arranging is in the present embodiment, corresponding with an air compartment 107 of gasification furnace 103 first halfsFire grate, drive unit, as the dryer section of gasification furnace 103 sieges 105, later half with gasification furnace 103The fire grate of air compartment 107 correspondences of portion, drive unit are as the gasification section of gasification furnace 103 sieges 105.The dryer section of gasification furnace 103 sieges 105, gasification section can adopt respectively a 1-2 independently air compartment107 air feeds, also can adopt respectively 3-4 independently air compartment 107 air feeds. Certainly, fire grate, driveMoving device and air compartment 107 also can not corresponding settings, better regulate the bed of material on moving hearth 105 to moveMove and air distribution relation. Incinerator 104 can adopt 1-4 independently air compartment 107 air feeds, burnsRear lime-ash is got rid of from slag notch, enters next step treatment process.

Between described feed hopper 102, gasification furnace 103, be provided with windrow seal section 108, garbage pusher device 106Work enters position in windrow seal section 108, and garbage raw material is put into and fallen from feed hopper 102, and rubbish pushes awayGlassware 106 retreats, then advances, and pusher forms windrow at windrow seal section 108 back and forth, makes gasificationStove 103 entrances, in windrow sealing state, strengthen gasification furnace 103 sealing effectiveness, solve garbage pusher device106 and the easy gas leakage problem of feed hopper 102. While needing complete prepurging to dispose all rubbish, garbage pusherDevice 106 is forward impelling half stroke again, and rubbish is pushed in gasification furnace 103 completely, makes gasification furnace 103Entrance loses windrow sealing effectiveness. Grate 101 parts between described gasification furnace 103 and incinerator 104On leave the transition slag section 109 that falls, the described transition slag section 109 that falls is provided with residue pusher 110, for willThe rubbish residue falling in gasification furnace 103 pushes in incinerator 104, and transition falls slag section 109 at accumulation rubbishWhen rubbish residue, can, in windrow sealing state, strengthen gasification furnace 103 sealing effectiveness, solution gasification furnace 103,Between incinerator 104, go here and there the problem of wind. In the present embodiment, described transition falls, and be provided with in slag section 109 canThe isolating door 111 opening and closing, described isolating door 111 is for cutting off gasification furnace 103, incinerator 104. ?The furnace lifting initial stage maybe needs to control while altering wind between gasification furnace 103 and incinerator, closes isolating door 111, when fallingSlag section is stacked a certain amount of residue and is formed after windrow sealing, can keep isolating door 111 to open, with belowThe residue pusher 110 arranging is coordinated to use, to realize rubbish continuous gasification burning disposal.

The upper end of described gasification furnace 103, the upper end of incinerator 104 are respectively the shape that arches upward, described gasification furnace103 face arch is straight structure, or the face arch of gasification furnace 103 is the rear end structure that is inclined upwardly. DescribedThe vault of gasification furnace 103 arranges the first exhanst gas outlet 112, and the vault of described incinerator 104 arranges the second cigaretteGas outlet 113, is respectively equipped with on the arching upward of the arching upward of described gasification furnace 103 upper ends, incinerator 104 upper endsIgniting combustion supporting hole 114. Gasification flue gas is got rid of from the first exhanst gas outlet 112, the second exhanst gas outlet 113, gasChange stove 103 furnace cavities compared with traditional incinerator, relatively reduce; Forward and backward arch and mobile stoveBed 105 relative positions diminish, and have reduced the space that incinerator takies, and are also easier to insulation, have reduced heatThe amount of leakage of amount, is conducive to rubbish and fully gasifies. On the face arch of described gasification furnace 103, rear arch, establish respectivelyPut secondary for air port 115.

Also comprise dust arrester 201, the first blower fan 202, the second blower fan 203, described dust arrester 201For cyclone separator or hot precipitator, in the present embodiment, described dust arrester 201 is cyclonic separationDevice. Described the first blower fan 202 is high-temperature blower, and described the second blower fan 203 is air blast. Described dedustingThe inlet end of device 201 is connected with the second exhanst gas outlet 113 by pipeline, described dust arrester 201Outlet side is connected with the inlet end of the first blower fan 202 by pipeline, the outlet side of described the first blower fan 202Connect the house steward of the first manifold 204, the arm of described the first manifold 204 moves with gasification furnace 103 respectivelySecondary air feed on each air compartment 107 of the below of siege 105 and gasification furnace 103 face arch, rear archMouth 115 is communicated with, and the first control valve 207, gasification furnace are set respectively on each arm of described the first manifold 204103 wind is that flue gas that high-temperature blower extracts incinerator 104 produces certain pressure and blasts gasification furnace 103 machinesIn an air compartment 107 of tool grate-type moving hearth 105 below correspondences, then by moving hearth 105A wind hole spray penetration rubbish, gasify, by the first control valve 207 on the each arm of correspondenceRegulate wind supply quantity. Gasification furnace 103 Secondary Airs are that the flue gas of high-temperature blower extraction incinerator 104 produces certainPressure blasts gasification furnace 103 burner hearths, and its spray-hole is arranged on gasification furnace 103 face arch and rear arch. Before,On rear arch, be provided with secondary for air port 115, improve gasification efficiency, strengthen polymer substance in flue gas and decompose.On rear arch, have igniting combustion supporting hole 114, the interior temperature of furnace lifting, baker and stable gasification furnace 103 is used, and passes throughThe first control valve 207 on corresponding each arm regulates wind supply quantity. The air inlet of described the second blower fan 203 withAtmosphere is communicated with, and the air that the second blower fan 203 blasts can be cold wind or the hot blast after heating. DescribedThe gas outlet of the second blower fan 203 connects the house steward of the second manifold 205, the arm of described the second manifold 205Respectively with each air compartment 107 of incinerator 104 moving hearth 105 belows and dust arrester 201Inlet end, outlet side are communicated with, and the second control valve 208 is set respectively on each arm of described the second manifold 205.104 wind of incinerator are that the air of certain pressure is blasted stoker fired grate formula moving hearth 105 by air blastIn an air compartment 107 of below correspondence, more residual by a wind hole spray penetration on moving hearth 105Slag, carries out residual burning, regulates wind supply quantity by the first control valve 207 on the each arm of correspondence. DedustingThe inlet end of device 201, the air intake of outlet side are temperature adjustment air feed, and temperature adjustment air feed is that air blast is by a level pressureThe air of power blasts incinerator 104 and exports (being cyclone inlet) and carry out temperature adjustment, meanwhile, and whirlwindSeparator outlet (being high-temperature blower entrance) blasts further temperature adjustment, by first on the each arm of correspondenceControl valve 207 regulates wind supply quantity.

Fig. 2 is the structural representation of cyclone combustion chamber 3. The upper end of described cyclone combustion chamber 3 is provided with burningIgniting combustion supporting hole, chamber 301, the lower end of cyclone combustion chamber 3 is provided with the taper slag notch that radius diminishes from top to bottom302, the top of described cyclone combustion chamber 3 circle wall arranges smoke inlet 303, described cyclone combustion chamber 3The bottom of circle wall arranges the 3rd exhanst gas outlet 304, in the circle wall of described cyclone combustion chamber 3, is evenly provided withSome combustion airs are for air port 305, and each combustion air is all positioned at smoke inlet 303, the 3rd flue gas for air port 305Between outlet 304. Described smoke inlet 303, the 3rd exhanst gas outlet 304 are positioned at cyclone combustion chamber 3 circumferenceThe opposition side of wall; Described the 3rd exhanst gas outlet 304 radially or tangentially arranges along cyclone combustion chamber 3 circle wall.Also comprise the 3rd manifold 206, the house steward of described the 3rd manifold 206 is communicated with the gas outlet of the second blower fan 203,Each arm of described the 3rd manifold 206 is communicated with for air port 305 with each combustion air respectively, the 3rd manifold 206Each arm on the 3rd control valve 209 is set respectively. The smoke inlet 303 of cyclone combustion chamber 3 and combustion-supportingAll being arranged in cyclone combustion chamber 3 circle wall for air port, can be the flue gas and sky in cyclone combustion chamber 3Gas incorporation time is longer, mix more even, more fully burning. The combustion-supporting air feed of cyclone combustion chamber 3Being air blast blasts the air of certain pressure combustion-supportingly to spray and enter cyclone combustion chamber 3, combustion-supporting air feed for air portApproach axis can be radially or tangentially; Carry out syngas combustion. Meanwhile, high-temperature blower extracts incinerator104 flue gas generation certain pressure blasts gasification furnace 103 stoker fired grate formula moving hearth 105 below correspondencesSecondary air chamber on air compartment 107 and the forward and backward arch of gasification furnace 103, also tool of described the first manifold 204Have an arm being connected with cyclone combustion chamber smoke inlet, this arm is provided with corresponding control valve. HighWhat warm air machine extracted has not utilized remainder flue gas, then by cyclone combustion chamber 3 smoke inlets spray intoEnter cyclone combustion chamber 3, carry out syngas combustion, regulate wind supply quantity, this structure energy by corresponding control valveEnough reduce thermal losses and improve heat exchanger effectiveness, greatly having improved the organic efficiency of heat, and can be effectiveGround reduces pollutant discharge amount.

Described incinerator 104 is provided with cinder notch 117, and the slag notch 116 of described incinerator 104 is positioned at combustionCinder stove fall cinder notch 117 under, described in cinder notch 117 the slagging tap by pipeline and dust arrester 201 that fallMouth is communicated with. This sealing structure is effective, can effectively hold minimizing pollutant discharge amount.

The waste disposal method of circulation air feed system after to stoker fired grate formula refuse gasification incinerator air feed, shouldMethod is carried out according to the following steps:

Steps A, close the gate that stoker fired grate formula refuse gasification incinerator 1 and atmosphere ventilate, starter motorTool grate-type refuse gasification incinerator 1, drops into feed hopper 102 by garbage raw material, and garbage pusher device 106 is pastMultiple repeatedly pusher, by the garbage raw material falling from feed hopper 102 push feed hopper 102, gasification furnace 103 itBetween windrow seal section 108, make windrow seal section 108 form windrow sealing state, unnecessary rubbish falls intoThe moving hearth 105 of gasification furnace 103, the moving hearth 105 of gasification furnace 103 is worked, and rubbish is conveyed intoThe transition slag section 109 that falls, residue pusher 110 pusher back and forth, the rubbish that transition is fallen in slag section 109Push in incinerator 104, the moving hearth 105 of incinerator 104 conveying garbage of working, until rubbish existsThe moving hearth 105 of gasification furnace 103, incinerator 104 is accumulated to required thickness: 0.6-0.8m,, bakerTime, the rubbish of piling up can be protected moving hearth 105, prevents scaling loss siege 105. Stop to feed hopper102 feed intake, and the moving hearth 105 of gasification furnace 103 and incinerator 104 quits work, then, and with ignitingThe igniting combustion supporting hole 114 of burner by gasification furnace 103 and incinerator 104 respectively with gasification furnace 103 HesThe burner hearth of incinerator 104 communicates, under the effect of start-up burner, to gasification furnace 103 and incinerator 104Carry out furnace lifting, baker, treat that this process stabilization completes, gasification furnace 103 and incinerator 104 burner hearths are reachedTo predetermined temperature 600-700 DEG C; The object of baker is in order to remove Natural Water and the crystallization water in lining, withExempt from the time going into operation to rise too soon due to furnace temperature, a large amount of expansion of moisture content caused body of heater spalling, bubbling or distortion veryCollapse to furnace wall, affect intensity and the service life of heating furnace furnace wall.

Step B, startup regulate circulation air feed system 2, regulate gasification furnace 103, incinerator 104 and followThe technological parameter of ring air feed system 2 (pusher speed, fire grate speed, wind-warm syndrome, blast and an air quantity,Negative pressure, thickness of feed layer etc. in secondary air temperature, blast and air quantity, furnace temperature, stove), feed intake to feed hopper 102,The moving hearth 105 of gasification furnace 103 conveying garbage of working, rubbish starts in the burner hearth of gasification furnace 103Burn, rubbish residue is piled up and is formed windrows sealings at transition slag section 109 places that fall, and makes gasification furnace 103Stove chamber inner combustion state temperature stabilization to 850 DEG C more than, the moving hearth 105 of incinerator 104 is worked defeatedRubbish residue after going out to burn.

Each technological parameter of step C, adjusting gasification furnace 103, incinerator 104 and circulation air feed system 2(pusher speed, fire grate speed, wind-warm syndrome, blast and air quantity, secondary air temperature, blast and an air quantity,Negative pressure, thickness of feed layer etc. in furnace temperature, stove), gasification furnace 103 gasifies to rubbish gradually, gasification temperatureBe stabilized between 700-800 DEG C, make the stable high-temperature flue gas producing containing 10%-20% synthesis gas of gasification furnace 103,Gasification furnace 103 vaporized state are stable carries out low temperature, middle temperature or high-temperature gasification and all can. Incinerator 104 is firedMore than burning state temperature stabilization to 850 DEG C, realize rubbish continuous gasification burning disposal; Need regulate whirlwind simultaneouslyEach technological parameter of combustion chamber 3, makes cyclone combustion chamber 3 the 3rd exhanst gas outlet 304 temperature stabilizations to 850 DEG CAbove.

Step D, need maintenance or when blowing out, stop feeding intake, regulate gasification furnace 103, incinerator 104 andThe technological parameter of circulation air feed system 2, makes gasification furnace 103 return to gradually fired state, treat rubbish andAfter rubbish residue burns, close stoker fired grate formula refuse gasification incinerator 1 and circulation air feed system 2. NeedRegulate each technological parameter of cyclone combustion chamber 3 simultaneously, make gasification furnace 103 return to gradually fired state.

Finally explanation, above preferred embodiment only in order to the technical solution of the utility model to be described but notRestriction, although the utility model is described in detail by above preferred embodiment, thisThose skilled in the art should be appreciated that and can make various changes to it in the form and details,And do not depart from the utility model claims limited range.

Claims (8)

1. a circulation air feed system for stoker fired grate formula refuse gasification incinerator, comprises incineratorGasification furnace and incinerator, is characterized in that: between gasification furnace and incinerator, can seal or be communicated with gasificationThe below of furnace bed below and incinerator siege is respectively equipped with at least one independently air compartment, instituteState on the face arch, rear arch of gasification furnace and secondary is set respectively for air port, the vault of described gasification furnace arranges firstExhanst gas outlet, the vault of described incinerator arranges the second exhanst gas outlet;

Also comprise dust arrester, the first blower fan, the second blower fan, the inlet end of described dust arrester is by pipeRoad is connected with the second exhanst gas outlet, and the outlet side of described dust arrester is by the air inlet of pipeline and the first blower fanEnd connects, and the outlet side of described the first blower fan connects the house steward of the first manifold, the arm of described the first manifoldRespectively with each air compartment of the below of gasification furnace moving hearth and gasification furnace face arch, rear arch on secondaryBe communicated with for air port, on each arm of described the first manifold, the first control valve be set respectively, described the second blower fanAir inlet be communicated with atmosphere, the gas outlet of described the second blower fan connects the house steward of the second manifold, describedThe arm of two manifolds respectively with each air compartment of incinerator moving hearth below and the air inlet of dust arresterEnd, outlet side are communicated with, and on each arm of described the second manifold, the second control valve are set respectively.

2. the circulation air feed of a kind of stoker fired grate formula refuse gasification incinerator according to claim 1 systemSystem, is characterized in that: also comprise cyclone combustion chamber, the 3rd manifold for second-time burning, described whirlwindCombustion chamber is provided with smoke inlet, the 3rd exhanst gas outlet and some combustion airs for air port, and described flue gas entersMouth is communicated with the first exhanst gas outlet by pipeline, and described the 3rd exhanst gas outlet is positioned at smoke inlet below, instituteStating some combustion airs supplies air port between smoke inlet, the 3rd exhanst gas outlet; Described the 3rd manifold totalPipe be communicated with the gas outlet of the second blower fan, each arm of described the 3rd manifold respectively with some combustion air air feedsMouth is communicated with, and the 3rd control valve is set respectively on each arm of the 3rd manifold.

3. the circulation air feed of a kind of stoker fired grate formula refuse gasification incinerator according to claim 2 systemSystem, is characterized in that: an arm of described the first manifold is communicated with the smoke inlet of cyclone combustion chamber,This arm is provided with described the first control valve.

4. the circulation air feed of a kind of stoker fired grate formula refuse gasification incinerator according to claim 2 systemSystem, is characterized in that: described smoke inlet is positioned at the top of cyclone combustion chamber circle wall described the 3rd cigaretteGas outlet is positioned at the bottom of cyclone combustion chamber circle wall, and the lower end of described cyclone combustion chamber is provided with from top to bottomThe taper slag notch that radius diminishes.

5. the circulation air feed of a kind of stoker fired grate formula refuse gasification incinerator according to claim 4 systemSystem, is characterized in that: described smoke inlet, the 3rd exhanst gas outlet are positioned at the phase of cyclone combustion chamber circle wallToss about.

6. the circulation air feed of a kind of stoker fired grate formula refuse gasification incinerator according to claim 4 systemSystem, is characterized in that: described smoke inlet, the 3rd exhanst gas outlet, the cyclone firing of combustion air air feed opening's edgeChamber circle wall radially or tangentially arranges.

7. the circulation air feed of a kind of stoker fired grate formula refuse gasification incinerator according to claim 1 systemSystem, is characterized in that: described dust arrester is cyclone separator or hot precipitator.

8. the circulation air feed of a kind of stoker fired grate formula refuse gasification incinerator according to claim 1 systemSystem, is characterized in that: described the first blower fan is high-temperature blower, described the second blower fan is air blast.