CN105444145B - The steam generator system of synthesis gas is burned using refuse gasification - Google Patents

The steam generator system of synthesis gas is burned using refuse gasification Download PDF

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Publication number
CN105444145B
CN105444145B CN201511026841.0A CN201511026841A CN105444145B CN 105444145 B CN105444145 B CN 105444145B CN 201511026841 A CN201511026841 A CN 201511026841A CN 105444145 B CN105444145 B CN 105444145B
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China
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furnace
air
water
furnace chamber
gasification
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CN201511026841.0A
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Chinese (zh)
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CN105444145A (en
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李长江
严欣平
肖大志
周雄
林顺洪
丁又青
徐�明
柏继松
季炫宇
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重庆科技学院
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/12Heat utilisation in combustion or incineration of waste

Abstract

The invention discloses a kind of transition heat efficiency losses are smaller, the higher utilization refuse gasification of the organic efficiency of heat burns the steam generator system of synthesis gas.Including boiler body, the boiler body has interconnected cyclone combustion chamber, furnace chamber a, furnace chamber b, water-cooling wall is set in the cyclone firing room, superheater is provided with the furnace chamber a, evaporator is provided with furnace chamber b, the top of boiler body sets drum, the drum is provided with carbonated drink import, the water inlet that drum connects water-cooling wall by the first down-comer is used to export water, the water inlet that drum connects evaporator by the second down-comer is used to export water, the water-cooling wall, the air intake that the venthole of evaporator connects drum by steam pipe respectively is used for the high-temperature steam that flows back, the saturated vapor outlet of the drum connects the air intake of superheater by pipeline, for high-temperature steam to be inputted into superheater, the venthole output superheated steam of superheater.

Description

The steam generator system of synthesis gas is burned using refuse gasification

Technical field

Synthesis gas is burned the invention belongs to solid waste incineration processing technology field, more particularly to using refuse gasification Steam generator 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 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, boiler plant technology maturation, but technically can also be lifted:

1. for characteristics such as China's house refuse water content height, complicated components, fly ash content is higher in the flue gas after burning, Collecting ash is heavier, and the 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.

The content of the invention

It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of transition heat efficiency losses are smaller, heat The higher utilization refuse gasification of organic efficiency burns the steam generator system of synthesis gas.

The object of the present invention is achieved like this:

A kind of utilization refuse gasification burns the steam generator system of synthesis gas, including boiler body, and the boiler body has rotation Wind combustion chamber, furnace chamber a, furnace chamber b, the lower end of the cyclone combustion chamber set smoke inlet, and cyclone combustion chamber upper end is the 3rd cigarette Gas is exported, and the 3rd exhanst gas outlet of cyclone combustion chamber upper end is connected with furnace chamber a upper end, and the furnace chamber a, furnace chamber b lower end connect Logical, the upper end of the furnace chamber b is set in waste gas outlet, the cyclone firing room circumferentially arranged with water-cooling wall in a ring, described It is provided with furnace chamber a in superheater, furnace chamber b and is provided with evaporator, the top of boiler body sets drum, the cyclone firing Room, furnace chamber a, furnace chamber b are respectively positioned on below drum, and the drum, which is provided with carbonated drink import, drum, is provided with water separator, uses In separation steam water interface, drum connects the water inlet of water-cooling wall by the first down-comer, for exporting water separator point The water separated out, 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, for the high-temperature steam that flows back, the vapour by steam pipe respectively The saturated vapor outlet of bag connects the air intake of superheater by pipeline, for the high-temperature steam of backflow to be inputted in superheater, The venthole output superheated steam of the superheater.

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 Set and economizer is provided with Waste gas outlet, 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.

In order to which the flue gas discharged to furnace chamber c carries out harmless treatment, it is preferable that furnace chamber c Waste gas outlet connection flue gas Cleaning system, the flue gas purification system includes aeration tower, deduster, air-introduced machine, the chimney being sequentially connected in series along discharge directions.

Further, gasification furnace, incinerator and its circulation air feed system of stoker fired grate formula refuse gasification incinerator are included System, can seal or connect between gasification furnace and incinerator, and gasifying furnace bed lower section and burns furnace bed lower section difference Provided with least one independent air compartment, secondary air feed mouthful, the gasification are set respectively on the face arch of the gasification furnace, rear arch The vault of stove sets the first exhanst gas outlet, and the smoke inlet of the cyclone combustion chamber is connected by pipeline with the first exhanst gas outlet, The vault of the incinerator sets the second exhanst gas outlet;

The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, and the inlet end of the dust arrester leads to Piping is connected with the second exhanst gas outlet, and the outlet side of the dust arrester is connected by pipeline with the inlet end of the first blower fan, The outlet side of first blower fan connects the house steward of the first manifold, the branch pipe of first manifold respectively with gasification furnace moving hearth Each air compartment of lower section, the smoke inlet connection of each secondary air feed mouthful and cyclone combustion chamber on gasification furnace, described the First regulating valve, the air inlet and atmosphere of second blower fan, second wind are set respectively on each branch pipe of one manifold The gas outlet of machine connects the house steward of the second manifold, the branch pipe of second manifold respectively with each one below incinerator moving hearth The second regulation is set respectively on the inlet end of secondary air compartment and dust arrester, outlet side connection, each branch pipe of second manifold Valve.

Gasification furnace, incinerator are provided separately, and the vault of gasification furnace sets the first exhanst gas outlet, and the vault of incinerator sets the Two exhanst gas outlets, handle flue gas beneficial to the difference according to flue gas quality, while being conducive to flue gas ash removal, can provide more respectively The flue gas of high-quality, makes the utilization rate of flue gas higher, and the waste residue of discharge is less.

Second blower fan blasts air and provides First air for incinerator and provide temperature adjustment confession for cyclone separator, the first blower fan Wind, by the second regulation valve regulation wind supply quantity on correspondence pipeline, makes incinerator residue fully burn;Then, the first blower fan is taken out The flue gas of incinerator is taken, after temperature adjustment and cyclone collection flying dust, the flue gas supply gasification furnace of certain pressure is formed First air and Secondary Air, by the first regulation valve regulation wind supply quantity on correspondence pipeline, make rubbish in gasification furnace produce gasification, gas Change the flue gas for containing a certain amount of synthesis gas in stove, from the discharge of the first exhanst gas outlet, into cyclone combustion chamber processing links, the first wind The unnecessary flue gas that machine is extracted also enters cyclone combustion chamber simultaneously, takes full advantage of the high-temperature flue gas of incinerator discharge, improves energy The utilization rate of amount, cyclone combustion chamber provides high-temperature flue gas.The stoker fired grate formula refuse gasification incinerator garbage treatment quantity of this structure Greatly, the rubbish bed of material can undergo the stage that burns of drying, gasification and residue on stoker fired grate, and adaptation China house refuse is aqueous The characteristics such as height, complicated component are measured, pollutant emission in the energy conversion efficiency and reduction flue gas in garbage processing procedure is improved Amount, effectively prevents secondary pollution, and can realize large-scale rubbish continuous gasification burning disposal, it is ensured that refuse gasification burns effect Fruit and lime-ash clinker ignition loss, it is relative to reduce thermal losses and improve heat exchanger effectiveness, improve the thermal efficiency.

In order to which the flue gas discharged to furnace chamber b carries out further heat recovery, heat recovery efficiency is improved, it is preferable that 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, and furnace chamber c lower end is set Put and air preheater is provided with Waste gas outlet, the furnace chamber c, the outlet side of second blower fan connects entering for air preheater Gas port, the gas outlet of air preheater connects the house steward of the second manifold.

In order to reduce thermal losses and improve heat exchanger effectiveness, make the organic efficiency of heat higher, more fully utilize the The wind of two blower fans bulging, and beneficial to the intake of finer regulation cyclone combustion chamber each several part, it is preferable that the whirlwind Combustion chamber provided with some combustion air air feeds mouthful, some combustion air air feeds mouthful be located at smoke inlet, the 3rd exhanst gas outlet it Between, in addition to the 3rd manifold, the house steward of the 3rd manifold connects with the gas outlet of the second blower fan, each of the 3rd manifold Pipe is connected with some combustion air air feeds mouthful respectively, and the 3rd regulating valve is set respectively on each branch pipe of the 3rd manifold.

In order to discharge the waste residue that flue gas deposition is produced in furnace chamber a, furnace chamber b, and prevent waste residue effusion from producing pollution, preferably Common slag notch is provided with below ground, the furnace chamber a, furnace chamber b, the common slag notch is connected with the burner hearth of gasification furnace.

In order to discharge the waste residue that flue gas deposition is produced in cyclone firing room, and prevent waste residue effusion from producing pollution, it is preferable that The lower end of the cyclone combustion chamber is provided with the stove of the taper slag notch that radius diminishes from top to bottom, the taper slag notch and gasification furnace Thorax is connected.

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

This steam generator system by annular water-cooling wall be arranged on cyclone combustion chamber on, synthesis gas in cyclone firing Indoor Combustion more To be abundant, the temperature produced of burning is higher, relatively reduces thermal losses and improves heat exchanger effectiveness.What this steam generator system was reclaimed Origin of heat enters cyclone combustion chamber in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas, while to whirlwind Tangential air-supplied combustion-supporting flammable synthesis gas in combustion chamber, flue gas sequentially passes through cyclone combustion chamber, furnace chamber a, furnace chamber b, section heat Device and air preheater.Recycle the pre- hot condensed water of economizer, pre- hot condensed water enters boiler part, condensed water in water-cooling wall and Heated in evaporator, formation saturated vapor enters saturated vapor after drum, steam-water separation and enters superheater, is thermally formed again Vapours is exported, available for generating electricity, heat supply, heating etc..Present inventive concept is novel, using cyclone-burning method, reduces flue gas Middle fly ash content;Syngas combustion temperature is high, and gas residence time is long, and pollutant is effectively decomposed, and reduces pollutant emission, 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 the structural representation of incinerator;

Fig. 7 is the structural representation of circulation air feed system.

Reference

1 is incinerator, and 101 be grate, and 102 be feed hopper, and 103 be gasification furnace, and 104 be incinerator, and 105 be stove Bed, 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, and 110 push away for residue Glassware, 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, and 115 be two Secondary air feed mouthful, 116 be slag notch, and 117 be to fall cinder notch;

201 be dust arrester, and 202 be the first blower fan, and 203 be the second blower fan, and 204 be the first manifold, and 205 be the second discrimination Pipe, 206 be the 3rd manifold, and 207 be the first regulating valve, and 208 be the second regulating valve, and 209 be the 3rd 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

Referring to Fig. 1 to Fig. 7, for a kind of preferred embodiment for the steam generator system that synthesis gas is burned using refuse gasification.

In the present embodiment, steam generator system includes gasification furnace 103, incinerator 104, boiler body 4 and its circulation air feed system, It can seal or connect between gasification furnace 103 and incinerator 104, the lower section of the siege of gasification furnace 103 and the siege of incinerator 104 It is respectively arranged below with two independent air compartments 107, secondary air feed is set respectively on the face arch of the gasification furnace 103, rear arch Mouth 115, the vault of the gasification furnace 103 sets the first exhanst gas outlet 112, and the vault of the incinerator 104 sets the second flue gas Outlet 113.

The boiler body 4 has cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403, furnace chamber c404, the cyclone firing The lower end of room 3 sets smoke inlet 303, the smoke inlet 303 of the cyclone combustion chamber 3 pass through pipeline and gasification furnace 103 the One exhanst gas outlet 112 is connected, and the upper end of cyclone combustion chamber 3 is the 3rd exhanst gas outlet 304, and the smoke inlet 303, the 3rd flue gas go out Mouth 304 is located at the opposite side of the circumferential wall of cyclone combustion chamber 3, and the top of cyclone combustion chamber 3 sets combustion chamber ignition combustion-supporting hole 301. In order that flue gas, combustion air are discharged after being sufficiently mixed, burning in cyclone combustion chamber 3 from the 3rd exhanst gas outlet 304, the whirlwind Combustion chamber 3 is provided with some combustion air air feeds mouthful 305, and some combustion air air feeds mouthful 305 are located at smoke inlet the 303, the 3rd Between exhanst gas outlet 304.The smoke inlet 303, the 3rd exhanst gas outlet 304, combustion air air feed mouthfuls 305 is along cyclone combustion chamber 3 Circumferential wall is radially or tangentially set.3rd exhanst gas outlet 304 of the upper end of cyclone combustion chamber 3 is connected with furnace chamber a402 upper end, institute Furnace chamber a402, furnace chamber b403 lower end connection are stated, the upper end of the furnace chamber b403 sets waste gas outlet, the cyclone combustion chamber 3 Lower end provided with radius diminishes from top to bottom taper slag notch 302, the burner hearth of the taper slag notch 302 and gasification furnace 103 connects It is logical.Common slag notch, the burner hearth of the common slag notch and gasification furnace 103 are provided with below the furnace chamber a402, furnace chamber b403 Connection.In the present embodiment, the afterbody changeover portion of the common slag notch and taper slag notch 302 with the burner hearth of gasification furnace 103 Connection.

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 is connected by the second down-comer 410 The water inlet of evaporator 407 is connect, for exporting the water that water separator is isolated, the water-cooling wall 405, evaporator 407 Venthole connects the air intake of drum 408 by steam pipe respectively, for the high-temperature steam that flows back, the saturated vapor of the drum 408 The air intake that superheater 406 is connected by pipeline is exported, for the high-temperature steam of backflow to be inputted in superheater 406, the mistake The venthole output superheated steam of hot device 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, the water inlet of the economizer 418 and the delivery port of booster water pump 416 are provided with floss hole, the furnace chamber c404 Connection, the delivery port of the economizer 418 and the carbonated drink inlet communication of drum 408.Furnace chamber c404 Waste gas outlet connection cigarette Gas cleaning 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 is included in dust arrester 201, the first blower fan 202, the second blower fan 203, the present embodiment, institute Dust arrester 201 is stated for cyclone separator or hot precipitator 421, first blower fan 202 is high-temperature blower, described second Blower fan 203 is air blower.The inlet end of the dust arrester 201 is connected by pipeline with the second exhanst gas outlet 113, the dedusting The outlet side of device 201 is connected by pipeline with the inlet end of the first blower fan 202, the outlet side connection of first blower fan 202 The house steward of first manifold 204, the branch pipe of first manifold 204 respectively with the lower section of the moving hearth of gasification furnace 103 it is each once The smoke inlet 303 of each secondary air feed mouthful 115 and cyclone combustion chamber 3 on air compartment 107, gasification furnace 103 is connected, and described first First regulating valve 207 is set respectively on each branch pipe of manifold 204, and air inlet and the material pit air of second blower fan 203 connect It is logical, the foul smell distributed in material pit can be absorbed, the gas outlet of second blower fan 203 connects the house steward of the second manifold 205, institute State the branch pipe of the second manifold 205 respectively with each air compartment 107 and dust arrester 201 below the moving hearth of incinerator 104 Inlet end, outlet side connection, the second regulating valve 208 is set respectively on each branch pipe of second manifold 205.Also include the 3rd Manifold 206, the house steward of the 3rd manifold 206 connects with the gas outlet of the second blower fan 203, each of the 3rd manifold 206 Pipe is connected with some combustion air air feeds mouthful 305 respectively, and the 3rd regulating valve 209 is set respectively on each branch pipe of the 3rd manifold 206.Institute State in furnace chamber c404 and be provided with air preheater 424, the present embodiment, air preheater 424 is located at the downstream of economizer 418, The outlet side of second blower fan 203 connects the air inlet of air preheater 424, the gas outlet connection of air preheater 424 the The house steward of two manifolds 206, the house steward of the 3rd manifold 206 connects with the gas outlet of air preheater 424.

It is the concrete structure and its circulation air feed system of stoker fired grate formula refuse gasification incinerator 1, bag referring to Fig. 6, Fig. 7 Grate 101, and feed hopper 102, gasification furnace 103 and the incinerator 104 set gradually on grate 101 along feedstock direction are included, The rear of incinerator 104 is the slag notch 116 of incinerator 104, and the incinerator 104 is provided with cinder notch 117, the incinerator 104 slag notch 116 is located at incinerator and falls the underface of cinder notch 117, it is described fall cinder notch 117 pass through pipeline and dust arrester 201 Slag notch connection.This sealing structure effect is good, can effectively hold reduction pollutant discharge amount.Gasification furnace 103 is mainly to rubbish The carbon-containing part of rubbish is gasified, and discharges flammable gasification flue gas and rubbish residue, and incinerator 104 is substantially carried out the combustion of carbon residue Burning processing, and discharge innoxious lime-ash.The siege 105 of gasification furnace 103 and incinerator 104 is using the machine of the independent driving of segmentation Tool grate-type moving hearth 105, the fire grate of stoker fired grate formula moving hearth 105 is before and after moving grate plate and fixed grate plate It is overlapping, it is spaced collect form, adjacent multigroup moving grate plate is connected by pull bar, using a set of drive device drive. Stoker fired grate formula moving hearth 105 is as the carrier of conveying garbage, and embodiments thereof can be all types of moving hearths 105, such as Chain-plate type, drum-type, multisection type fire grate system etc..

The grate 101 is provided with garbage pusher device 106, and the garbage pusher device 106 is located at the lower section of feed hopper 102, For the rubbish in feed hopper 102 to be pushed into gasification furnace 103, the lower section of the moving hearth 105 of gasification furnace 103 and incinerator 104 moving hearths 105 are respectively arranged below with least one air compartment 107 being independently arranged, the present embodiment, with gasification furnace The corresponding fire grate of an air compartment 107 of 103 first halfs, drive device, as the dryer section of the siege 105 of gasification furnace 103, with gasification The latter half of corresponding fire grate of an air compartment 107 of stove 103, drive device as the siege 105 of gasification furnace 103 gasification section.Gasification The 1-2 independent air feeds of air compartment 107 can be respectively adopted in dryer section, the gasification section of the siege 105 of stove 103, can also distinguish Using the 3-4 independent air feeds of air compartment 107.Certainly, fire grate, drive device and an air compartment 107 can not be also correspondingly arranged, Preferably adjust bed of material movement and air distribution relation on moving hearth 105.Incinerator 104 can be using 1-4 independent First airs The air feed of room 107, burns rear lime-ash and is excluded from slag notch, into next step treatment process.

Windrow seal section 108 is provided between the feed hopper 102, gasification furnace 103, the work of garbage pusher device 106 is entered to be located in place In in windrow seal section 108, garbage raw material is put into from feed hopper 102 and fallen, and garbage pusher device 106 is retreated, then is promoted, reciprocal many Secondary pusher makes the entrance of gasification furnace 103 be in windrow sealing state in the formation windrow of windrow seal section 108, and enhancing gasification furnace 103 is close Effect is sealed, garbage pusher device 106 and the easy leakage problem of feed hopper 102 is solved.When needing the complete prepurging to dispose all rubbish, The forward impelling half stroke again of garbage pusher device 106, rubbish is pushed completely into gasification furnace 103, the entrance of gasification furnace 103 is lost Windrow sealing effectiveness.Transition is left on the part of grate 101 between the gasification furnace 103 and incinerator 104 and falls slag section 109, institute State transition and fall slag section and 109 be provided with residue pusher 110, the rubbish residue for will be fallen in gasification furnace 103 is pushed into incinerator In 104, transition falls slag section 109 and can be at windrow sealing state when accumulating rubbish residue, strengthens the sealing effectiveness of gasification furnace 103, The problem of solving string wind between gasification furnace 103, incinerator 104.In the present embodiment, the transition falls in slag section 109 that be provided with can The isolating door 111 of opening and closing, the isolating door 111 is used to separate gasification furnace 103, incinerator 104.Furnace lifting initial stage or need control When altering wind between gasification furnace 103 and incinerator processed, isolating door 111 is closed, a certain amount of residue formation windrow is stacked when falling slag section After sealing, isolating door 111 can be kept to open, coordinate to use with the residue pusher 110 that lower section is set, to realize that rubbish is continuous Gasification burning processing.

The upper end of the gasification furnace 103, the upper end of incinerator 104 are respectively in the shape that arches upward, and the face arch of the gasification furnace 103 is Flat construction, or, the face arch of gasification furnace 103 is inclined upwardly structure for rear end.The vault of the gasification furnace 103 sets the first cigarette Gas outlet 112, the vault of the incinerator 104 sets the second exhanst gas outlet 113, and the upper end of gasification furnace 103 is arched upward, burnt Igniting combustion supporting hole 114 is respectively equipped with the arching upward of the upper end of stove 104.Flue gas gasify from the first exhanst gas outlet 112, the second exhanst gas outlet 113 exclude, and the furnace cavity of gasification furnace 103 is relatively reduced compared with traditional waste incinerator;Forward and backward arch and moving hearth 105 Relative position diminishes, and reduces the space of incinerator occupancy, is also easier to insulation, reduces the amount of leakage of heat, be conducive to rubbish Rubbish fully gasifies.Secondary air feed mouthful 115 is set respectively on the face arch of the gasification furnace 103, rear arch.

The First air of gasification furnace 103 is that the flue gas generation certain pressure of high-temperature blower extraction incinerator 104 blasts gasification furnace 103 In the corresponding air compartment 107 in the lower section of stoker fired grate formula moving hearth 105, then pass through the air holes spray on moving hearth 105 Rubbish is shot through, is gasified, wind supply quantity is adjusted by the first regulating valve 207 on each branch pipe of correspondence.The Secondary Air of gasification furnace 103 Be high-temperature blower extract incinerator 104 flue gas produce certain pressure blast the burner hearth of gasification furnace 103, its spray-hole is arranged on gasification On the face arch of stove 103 and rear arch.Secondary air feed mouthful 115 is provided with forward and backward arch, macromolecule in gasification efficiency, enhancing flue gas is improved Substance decomposition.Temperature in igniting combustion supporting hole 114, furnace lifting, baker and stable gasification furnace 103 is provided with rear arch to use, and passes through correspondence The first regulating valve 207 regulation wind supply quantity on each branch pipe.The air inlet and atmosphere of second blower fan 203, the second blower fan 203 air blasted can be cold wind or the hot blast after heating.The gas outlet of second blower fan 203 connects the second manifold 205 house steward, each air compartment 107 of the branch pipe of second manifold 205 respectively with the lower section of 104 moving hearth of incinerator 105 And inlet end, the outlet side connection of dust arrester 201, the second regulation is set respectively on each branch pipe of second manifold 205 Valve 208.The First air of incinerator 104 is air blower by the air of certain pressure, and to blast the lower section of stoker fired grate formula moving hearth 105 right In the air compartment 107 answered, then by an air holes spray penetration residue on moving hearth 105, residual burning is carried out, is passed through The first regulating valve 207 regulation wind supply quantity on each branch pipe of correspondence.The inlet end of dust arrester 201, the air intake of outlet side are temperature adjustment Air feed, temperature adjustment air feed, which is air blower by the air of certain pressure, to be blasted incinerator 104 and exports (i.e. cyclone inlet) and carry out Temperature adjustment, meanwhile, Cyclone outlet (i.e. high-temperature blower entrance) blasts further temperature adjustment, passes through first on each branch pipe of correspondence Regulating valve 207 adjusts wind supply quantity.

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

Step A, the gate for closing stoker fired grate formula refuse gasification incinerator 1 and atmospheric vent, start mechanical grate-type rubbish Rubbish incinerator 1, puts into feed hopper 102, the pusher back and forth of garbage pusher device 106 will be from feed hopper 102 by garbage raw material The garbage raw material fallen is pushed into the windrow seal section 108 between feed hopper 102, gasification furnace 103, forms windrow seal section 108 Windrow sealing state, unnecessary rubbish falls into the moving hearth 105 of gasification furnace 103, and the moving hearth 105 of gasification furnace 103 works, Rubbish is conveyed into transition and falls slag section 109, transition is fallen the rubbish in slag section 109 and pushed away by the pusher back and forth of residue pusher 110 Enter in incinerator 104, the work conveying garbage of moving hearth 105 of incinerator 104, until rubbish is in gasification furnace 103, incinerator 104 moving hearth 105 is accumulated to required thickness:0.6-0.8m, during baker, the rubbish accumulated can protect mobile stove Bed 105, prevents scaling loss siege 105.Stop feeding intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 and incinerator 104 stops Only work, then, with start-up burner by the igniting combustion supporting hole 114 of gasification furnace 103 and incinerator 104 respectively with gasification furnace 103 and the burner hearth of incinerator 104 communicate, in the presence of start-up burner, gasification furnace 103 and incinerator 104 are carried out furnace lifting, Baker, treats that this process stabilization is completed, gasification furnace 103 and the burner hearth of incinerator 104 is reached 600-700 DEG C of predetermined temperature;Baker Purpose be in order to remove the Natural Water and the crystallization water in lining, in order to avoid when going into operation due to furnace temperature rise it is too fast, moisture content is a large amount of Expansion causes body of heater spalling, bubbling or deformation even furnace wall to collapse, and influences the intensity and service life of heating furnace furnace wall.

Step B, startup regulation circulation air feed system 2, regulation gasification furnace 103, incinerator 104 and circulation air feed system 2 Technological parameter (pusher speed, fire grate speed, wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, Negative pressure, thickness of feed layer etc. in stove), fed intake to feed hopper 102, the work conveying garbage of moving hearth 105 of gasification furnace 103, rubbish Burning is proceeded by the burner hearth of gasification furnace 103, rubbish residue falls in transition to be accumulated to form windrow sealing at slag section 109, is made The stove chamber inner combustion state temperature of gasification furnace 103 is stabilized to more than 850 DEG C, the work output combustion of moving hearth 105 of incinerator 104 Rubbish residue after cinder.

Step C, regulation gasification furnace 103, incinerator 104 and each technological parameter (the pusher speed for circulating air feed system 2 Degree, fire grate speed, wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, negative pressure, thickness of feed layer in stove Deng), gasification furnace 103 gradually gasifies to rubbish, and gasification temperature is stable between 700-800 DEG C, makes the stable production of gasification furnace 103 The high-temperature flue gas of the raw synthesis gas containing 10%-20%, the stable progress low temperature of the vaporized state of gasification furnace 103, middle temperature or high-temperature gasification are equal Can.Make the fired state temperature stabilization of incinerator 104 to more than 850 DEG C, realize rubbish continuous gasification burning disposal;It need to adjust simultaneously Each technological parameter of cyclone combustion chamber 3, makes the temperature stabilization of the 3rd exhanst gas outlet of cyclone combustion chamber 3 304 to more than 850 DEG C.

It step D, need to overhaul or during blowing out, stop feeding intake, regulation gasification furnace 103, incinerator 104 and circulation air feed system 2 technological parameter, makes gasification furnace 103 be gradually restored to fired state, after rubbish and rubbish residue are burnt, and closes stoker fired grate Formula refuse gasification incinerator 1 and circulation air feed system 2.Each technological parameter of cyclone combustion chamber 3 need to be adjusted simultaneously, make gasification furnace 103 are gradually restored to fired state.

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

Claims (9)

1. a kind of utilization refuse gasification burns the steam generator system of synthesis gas, including boiler body, it is characterised in that:The boiler sheet Body has cyclone combustion chamber, furnace chamber a, furnace chamber b, and the lower end of the cyclone combustion chamber sets smoke inlet, cyclone combustion chamber upper end For the 3rd exhanst gas outlet, the 3rd exhanst gas outlet of cyclone combustion chamber upper end is connected with furnace chamber a upper end, the furnace chamber a, furnace chamber b Lower end connection, the upper end of the furnace chamber b is set in waste gas outlet, the cyclone firing room circumferentially arranged with water cooling in a ring It is provided with wall, the furnace chamber a in superheater, furnace chamber b and is provided with evaporator, the top of boiler body sets drum, the rotation Wind combustion chamber, furnace chamber a, furnace chamber b are respectively positioned on below drum, and the drum, which is provided with carbonated drink import, drum, is provided with steam-water separation Device, for separating steam water interface, drum connects the water inlet of water-cooling wall by the first down-comer, for exporting steam-water separation The water that device is isolated, drum connects the water inlet of evaporator by the second down-comer, for exporting water separator separation The water gone out, the water-cooling wall, the venthole of evaporator connect the air intake of drum by steam pipe respectively, and for flowing back, high temperature steams Vapour, the saturated vapor outlet of the drum connects the air intake of superheater by pipeline, for the high-temperature steam of backflow to be inputted In superheater, the venthole output superheated steam of the superheater;
The also gasification furnace including stoker fired grate formula refuse gasification incinerator, incinerator and its circulation air feed system, gasification furnace and combustion It can seal or connect between cinder stove, gasifying furnace bed lower section and burns that furnace bed to be respectively arranged below with least one only Secondary air feed mouthful is set respectively on a vertical air compartment, the face arch of the gasification furnace, rear arch, and the vault of the gasification furnace sets the One exhanst gas outlet, the smoke inlet of the cyclone combustion chamber is connected by pipeline with the first exhanst gas outlet, the arch of the incinerator Top sets the second exhanst gas outlet;
The circulation air feed system includes dust arrester, the first blower fan, the second blower fan, and the inlet end of the dust arrester passes through pipe Road is connected with the second exhanst gas outlet, and the outlet side of the dust arrester is connected by pipeline with the inlet end of the first blower fan, described The outlet side of first blower fan connects the house steward of the first manifold, the branch pipe of first manifold respectively with gasification furnace moving hearth The smoke inlet connection of each air compartment of side, each secondary air feed mouthful and cyclone combustion chamber on gasification furnace, first discrimination First regulating valve is set respectively on each branch pipe of pipe, the air inlet and atmosphere of second blower fan, second blower fan Gas outlet connects the house steward of the second manifold, the branch pipe of second manifold respectively with each First air below incinerator moving hearth The second regulating valve is set respectively on the inlet end of room and dust arrester, outlet side connection, each branch pipe of second manifold.
2. utilization refuse gasification according to claim 1 burns the steam generator system of synthesis gas, it is characterised in that:Also include steaming Vapour output device, to water input system, the venthole of the superheater exports superheated steam by pipeline to steam output device, It is described to include the condenser, water pump, oxygen-eliminating device, the booster water pump that are sequentially connected in series by pipeline to water input system, the water pump, remove Water source is connected by moisturizing pipeline between oxygen device, the water inlet of the condenser connects the draining of steam output device by pipeline Mouthful, the delivery port of the booster water pump connects the carbonated drink import of drum by pipeline.
3. utilization refuse gasification according to claim 2 burns the steam generator system of synthesis gas, it is characterised in that:The steam Output device is steam turbine.
4. utilization refuse gasification according to claim 2 burns the steam generator system of synthesis gas, it is characterised in that:The boiler The upper end that 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 to arrange Put and economizer is provided with mouth, the furnace chamber c, the water inlet of the economizer is connected with the delivery port of booster water pump, the section heat The delivery port of device and the carbonated drink inlet communication of drum.
5. utilization refuse gasification according to claim 4 burns the steam generator system of synthesis gas, it is characterised in that:Furnace chamber c's Waste gas outlet connect flue gas purification system, the flue gas purification system include be sequentially connected in series along discharge directions aeration tower, remove Dirt device, air-introduced machine, chimney.
6. utilization refuse gasification according to claim 1 burns the steam generator system of synthesis gas, it is characterised in that:The boiler The upper end that 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 to arrange Put and air preheater is provided with mouth, the furnace chamber c, the outlet side of second blower fan connects the air inlet of air preheater, it is empty The gas outlet of air preheater connects the house steward of the second manifold.
7. utilization refuse gasification according to claim 1 burns the steam generator system of synthesis gas, it is characterised in that:The whirlwind Combustion chamber provided with some combustion air air feeds mouthful, some combustion air air feeds mouthful be located at smoke inlet, the 3rd exhanst gas outlet it Between, in addition to the 3rd manifold, the house steward of the 3rd manifold connects with the gas outlet of the second blower fan, each of the 3rd manifold Pipe is connected with some combustion air air feeds mouthful respectively, and the 3rd regulating valve is set respectively on each branch pipe of the 3rd manifold.
8. utilization refuse gasification according to claim 1 burns the steam generator system of synthesis gas, it is characterised in that:The furnace chamber Common slag notch is provided with below a, furnace chamber b, the common slag notch is connected with the burner hearth of gasification furnace.
9. utilization refuse gasification according to claim 1 burns the steam generator system of synthesis gas, it is characterised in that:The whirlwind The lower end of combustion chamber is connected provided with the taper slag notch that radius diminishes from top to bottom, the taper slag notch with the burner hearth of gasification furnace.
CN201511026841.0A 2015-12-30 2015-12-30 The steam generator system of synthesis gas is burned using refuse gasification CN105444145B (en)

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EP3438534A4 (en) * 2016-03-31 2019-12-18 Hitachi Zosen Corporation Stoker-type garbage incinerator provided with waste heat recovery boiler
CN106224035B (en) * 2016-09-05 2018-01-05 重庆科技学院 Humid air turbine electricity generation system based on the recovery of refuse gasification synthesis gas
CN106287642B (en) * 2016-09-05 2018-02-23 重庆科技学院 The coaxial combined generating system of combustion gas and steam turbine based on refuse gasification

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JP3063622B2 (en) * 1996-05-28 2000-07-12 株式会社日立製作所 Waste power generation system and waste treatment system
CN2384116Y (en) * 1999-08-10 2000-06-21 四川省环能科技实业有限公司 Refure incineration boiler
CN201050778Y (en) * 2007-01-17 2008-04-23 上海环保工程成套有限公司 Garbage combustion residual heat boiler anticorrosion superheater device for outputting high temperature overheated steam
CN102563657A (en) * 2011-12-02 2012-07-11 华北电力大学(保定) Refuse incineration system and refuse incineration method for zero emission of flue gas pollutants
CN205316286U (en) * 2015-12-30 2016-06-15 重庆科技学院 Utilize waste gasification to burn boiler system of synthetic gas

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