CN205316286U - Utilize waste gasification to burn boiler system of synthetic gas - Google Patents

Utilize waste gasification to burn boiler system of synthetic gas Download PDF

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Publication number
CN205316286U
CN205316286U CN201521131295.2U CN201521131295U CN205316286U CN 205316286 U CN205316286 U CN 205316286U CN 201521131295 U CN201521131295 U CN 201521131295U CN 205316286 U CN205316286 U CN 205316286U
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China
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steam
connects
water
furnace
furnace chamber
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CN201521131295.2U
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Chinese (zh)
Inventor
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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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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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 utility model discloses an it is less to change the heat exchange efficiency loss, utilize waste gasification to burn boiler system of synthetic gas that thermal recovery efficiency is higher. Comprising a boiler body, boiler body has cyclone -furnace firing room, oven chamber a, the oven chamber b of mutual intercommunication, the indoor water -cooling wall of establishing of cyclone -furnace firing, being provided with the over heater in the oven chamber a, being provided with the evaporimeter in the oven chamber b, boiler body's top sets up the steam pocket, be equipped with soda import on the steam pocket, the water inlet of steam pocket through first decline union coupling water -cooling wall is used for exporting water, and the water inlet of steam pocket through second decline union coupling evaporimeter is used for exporting water, the play steam ports of water -cooling wall, evaporimeter is used for the high -temperature steam that flows back through the steam inlet of steam pipe connection steam pocket respectively, the steam inlet of pipe connection over heater is passed through in the saturated steam export of steam pocket for input high -temperature steam the play steam ports output superheated steam of over heater, over heater.

Description

Refuse gasification is utilized to burn the steam generator system of synthesis gas
Technical field
This utility model belongs to solid waste incineration processing technology field, particularly relates to the steam generator system utilizing refuse gasification to burn synthesis gas.
Background technology
Existing technology of garbage disposal mainly has burning, sanitary landfills, compost, waste recovery etc. The advantages such as in garbage disposal routine techniques, it is obvious that burning disposal has reduced training, and innoxious thoroughly occupation of land amount is little, and waste heat energy is obtained by, and secondary pollution is few, meet the strategic requirement of China's sustainable development. But along with domestic and international improving constantly environmental requirement, how to strengthen the control to secondary pollution particularly important. Therefore, refuse pyrolysis gasification burning technology is by the road shifting industrial applications gradually onto, what primarily now adopt especially for domestic rubbish is all kinds of incineration technologies, and the technological innovation bringing domestic garbage disposal industry is regenerated by the industrialization widely of gasification burning technology.
For many years, China's scientific research to the gasification burning technology such as biomass, rubbish, it is in progress a lot of, the basic research of laboratory is a lot, also has applied research, such as: rotary kiln type, the destructive gasifying of vertical and fluidized bed type or temperature gasification and high fusion technology etc. But Technique Popularizing application is upper or there is a definite limitation, and raw material type, garbage treatment quantity, secondary pollution control and economic benefit etc. are principal elements.
In existing burning process and boiler plant, it is a lot of that boiler reclaims heat methods, technology maturation; Heating style is also many, such as: solar energy, smelting furnace waste heat, coal furnace, fluid bed, the fixing thermal source such as bed, rotary kiln, utilizes boiler to reclaim heat, be used for generating electricity, heat supply, heating etc.
In sum, boiler plant technology maturation, but technically also can get a promotion:
1., for characteristics such as China's house refuse water content height, complicated components, in the flue gas after burning, fly ash content is higher, and collecting ash is heavier, and the deashing repair and maintenance cycle is short.
2. being on the increase along with refuse production, sanitary fill is mountain such as, and garbage treatment quantity must be effectively improved, could meeting the market requirement.
3., in the face of strict pollutant emission requirement, secondary pollution controls the key problem being technically need to solve.
4., in order to effectively increase economic efficiency, in rubbish heat treatment process, the organic efficiency of heat needs to improve. Existing rubbish heat treatment technics generally adopts the high-temperature flue gas heat after boiler recovery waste incineration, produce steam and shift steam turbine power generation onto, whole transition heat efficiency losses is relatively big, processes identical quantity of refuse, relatively reduces thermal losses and raising heat exchanger effectiveness just can improve the thermal efficiency.
Utility model content
The purpose of this utility model is in that to overcome the deficiencies in the prior art, it is provided that a kind of transition heat efficiency losses is less, the steam generator system utilizing refuse gasification to burn synthesis gas that the organic efficiency of heat is higher.
The purpose of this utility model is achieved in that
A kind of steam generator system utilizing refuse gasification to burn synthesis gas, including boiler body, described boiler body has cyclone combustion chamber, furnace chamber a, furnace chamber b, the lower end of described cyclone combustion chamber arranges smoke inlet, cyclone combustion chamber upper end is the 3rd exhanst gas outlet, 3rd exhanst gas outlet of cyclone combustion chamber upper end connects with the upper end of furnace chamber a, described furnace chamber a, the lower end connection of furnace chamber b, the upper end of described furnace chamber b arranges waste gas outlet, described cyclone firing is indoor circumferentially arranged with ringwise water-cooling wall, it is provided with superheater in described furnace chamber a, it is provided with vaporizer in furnace chamber b, the top of boiler body arranges drum, described cyclone combustion chamber, furnace chamber a, furnace chamber b is respectively positioned on below drum, described drum is provided with soda pop import, water separator it is provided with in drum, for separating steam water interface, drum connects the water inlet of water-cooling wall by the first down-comer, for exporting the isolated water of water separator, drum connects the water inlet of vaporizer by the second down-comer, for exporting the isolated water of water separator, described water-cooling wall, the venthole of vaporizer connects the air intake of drum respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum connects the air intake of superheater by pipeline, for by the high-temperature steam input superheater of backflow, the venthole output superheated steam of described superheater.
Further, also include steam output device, to water input system, the venthole of described superheater exports superheated steam by pipeline to steam output device, described include being sequentially connected in series by pipeline to water input system condenser, water pump, oxygen-eliminating device, booster water pump, water source is connected by moisturizing pipeline between described water pump, oxygen-eliminating device, the water inlet of described condenser connects the discharge outlet of steam output device by pipeline, and the outlet of described booster water pump connects the soda pop import of drum by pipeline.
The steam that steam output device can not utilized by condenser is all converted to water, and absorb the heat of steam release, the Main Function of oxygen-eliminating device is exactly the oxygen and other gas that remove in boiler feedwater with it, ensure the quality of feedwater, booster water pump can improve hydraulic pressure, ensure, to the water supply capacity of water input system, the water that steam output device is discharged to be carried out further heat recovery to water input system, improve heat recovery efficiency.
In order to utilize superheated steam generation, it is preferable that described steam output device is steam turbine.
In order to the furnace chamber b flue gas discharged is carried out further heat recovery, improve heat recovery efficiency, further, described boiler body has furnace chamber c, the upper end of described furnace chamber c connects with the waste gas outlet of furnace chamber b upper end, and the lower end of furnace chamber c arranges Waste gas outlet, is provided with economizer in described furnace chamber c, the water inlet of described economizer connects with the outlet of booster water pump, the soda pop inlet communication of the outlet of described economizer and drum.
In order to the furnace chamber c flue gas discharged is carried out harmless treatment, it is preferable that the Waste gas outlet of furnace chamber c connects flue gas purification system, aeration tower that described flue gas purification system includes being sequentially connected in series along discharge directions, cleaner unit, air-introduced machine, chimney.
Further, also include the gasification furnace of stoker fired grate formula refuse gasification incinerator, incinerator and circulation air feed system thereof, can seal or connect between gasification furnace and incinerator, the lower section of gasification furnace siege and incinerator siege be respectively arranged below with at least one independent air compartment, the face arch of described gasification furnace, rear arch are respectively provided with secondary for air port, the vault of described gasification furnace arranges the first exhanst gas outlet, the smoke inlet of described cyclone combustion chamber is by pipeline and the connection of the first exhanst gas outlet, and the vault of described incinerator arranges the second exhanst gas outlet;
Described circulation air feed system includes dust arrester, first blower fan, second blower fan, the inlet end of described dust arrester is connected by pipeline and the second exhanst gas outlet, the outlet side of described dust arrester is connected by the inlet end of pipeline and the first blower fan, the outlet side of described first blower fan connects the house steward of the first manifold, the arm of described first manifold respectively with each air compartment of the lower section of gasification furnace moving hearth, each secondary on gasification furnace is for the smoke inlet connection of air port and cyclone combustion chamber, each arm of described first manifold is respectively provided with the first adjustment valve, the air inlet of described second blower fan and atmosphere, the gas outlet of described second blower fan connects the house steward of the second manifold, the arm of described second manifold respectively with incinerator moving hearth below each air compartment and the inlet end of dust arrester, outlet side connects, each arm of described second manifold is respectively provided with the second adjustment valve.
Gasification furnace, incinerator are provided separately, the vault of gasification furnace arranges the first exhanst gas outlet, the vault of incinerator arranges the second exhanst gas outlet, it is beneficial to the difference according to flue gas quality and processes flue gas respectively, be conducive to flue gas ash removal simultaneously, can providing the flue gas of more high-quality, the utilization rate making flue gas is higher, and the waste residue of discharge is less.
Second blower fan blasts air and provides First air for incinerator and provide homoiothermic air feed for cyclone separator, the first blower fan, regulates valve regulation wind supply quantity by second on corresponding pipeline, makes incinerator residue fully burn, then, first blower fan extracts the flue gas of incinerator, after homoiothermic and cyclone collection flying dust, form First air and the secondary wind of the flue gas supply gasification furnace of certain pressure, valve regulation wind supply quantity is regulated by first on corresponding pipeline, rubbish in gasification furnace is made to produce gasification, gasification furnace is contained within the flue gas of a certain amount of synthesis gas, discharge from the first exhanst gas outlet, enter cyclone combustion chamber processing links, the unnecessary flue gas that first blower fan extracts also simultaneously enters cyclone combustion chamber, take full advantage of the high-temperature flue gas that incinerator is discharged, put forward high-octane utilization rate, cyclone combustion chamber provides high-temperature flue gas. the stoker fired grate formula refuse gasification incinerator garbage treatment quantity of this structure is big, what the rubbish bed of material can experience dry, gasification and residue on stoker fired grate burns the stage, adapt to the characteristics such as China's house refuse water content height, complicated component, improve the energy conversion efficiency in garbage processing procedure and reduce pollutant discharge amount in flue gas, effectively prevent secondary pollution, and it is capable of large-scale rubbish continuous gasification burning disposal, ensure that refuse gasification burns effect and lime-ash clinker ignition loss, relatively reduce thermal losses and improve heat exchanger effectiveness, improve the thermal efficiency.
In order to the furnace chamber b flue gas discharged is carried out further heat recovery, improve heat recovery efficiency, preferably, described boiler body has furnace chamber c, the upper end of described furnace chamber c connects with the waste gas outlet of furnace chamber b upper end, and the lower end of furnace chamber c arranges Waste gas outlet, is provided with air preheater in described furnace chamber c, the outlet side of described second blower fan connects the air inlet of air preheater, and 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, the organic efficiency making heat is higher, utilize the wind that the second blower fan bloats more fully, and it is beneficial to the finer intake regulating cyclone combustion chamber each several part, preferably, described cyclone combustion chamber is provided with some combustion airs for air port, described some combustion airs are positioned at smoke inlet for air port, between 3rd exhanst gas outlet, also include the 3rd manifold, the described house steward of the 3rd manifold connects with the gas outlet of the second blower fan, each arm of described 3rd manifold connects for air port with some combustion airs respectively, each arm of the 3rd manifold is respectively provided with the 3rd adjustment valve.
In order to discharge the waste residue that in furnace chamber a, furnace chamber b, flue gas deposition produces, and prevent waste residue effusion from producing to pollute, it is preferable that described furnace chamber a, furnace chamber b are connected with common slag notch, and this common slag notch connects with the burner hearth of gasification furnace.
In order to discharge the waste residue that cyclone firing indoor flue gas deposition produces, and prevent waste residue effusion from producing to pollute, it is preferable that the lower end of described cyclone combustion chamber is provided with the taper slag notch that radius from top to bottom diminishes, and this taper slag notch connects with the burner hearth of gasification furnace.
Owing to have employed technique scheme, this utility model has the advantages that
The water-cooling wall of annular is arranged on cyclone combustion chamber by this steam generator system, and synthesis gas is more abundant in cyclone firing Indoor Combustion, and the temperature that burning produces is higher, relatively reduces thermal losses and improves heat exchanger effectiveness. The origin of heat that this steam generator system reclaims is in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas enters cyclone combustion chamber, simultaneously to air-supplied combustion-supporting flammable synthesis gas tangential in cyclone combustion chamber, flue gas sequentially passes through cyclone combustion chamber, furnace chamber a, furnace chamber b, economizer and air preheater. Recycling economizer preheating condensed water, preheating condensed water enters boiler part, and condensed water heats in water-cooling wall and vaporizer, form saturated vapor and enter drum, after steam-water separation, saturated vapor enters superheater, is again thermally formed superheated steam output, can be used for generating electricity, heat supply, heating etc. This utility model is novel, utilizes cyclone-burning method, decreases fly ash content in flue gas; Syngas combustion temperature is high, and gas residence time is long, and pollutant are effectively decomposed, and reduces pollutant emission, it is achieved that synthesis gas burning disposal after rubbish continuous gasification and heat recovery and utilization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of cyclone combustion chamber;
Fig. 3 is the schematic top plan view of Fig. 2;
Fig. 4 is steam output device, to the structural representation of 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.
Accompanying drawing labelling
1 is incinerator, and 101 is grate, and 102 is feed hopper, 103 is gasification furnace, and 104 is incinerator, and 105 is siege, 106 is garbage pusher device, and 107 is an air compartment, and 108 is windrow seal section, 109 fall slag section for transition, and 110 is residue pusher, and 111 is isolating door, 112 is the first exhanst gas outlet, and 113 is the second exhanst gas outlet, and 114 is igniting combustion supporting hole, 115 supply air port for secondary, and 116 is slag notch, and 117 is the cinder notch that falls;
201 is dust arrester, and 202 is the first blower fan, and 203 is the second blower fan, and 204 is the first manifold, and 205 is the second manifold, and 206 is the 3rd manifold, and 207 is the first adjustment valve, and 208 is the second adjustment valve, and 209 is the 3rd adjustment valve;
3 is cyclone combustion chamber, and 301 is combustion chamber ignition combustion-supporting hole, and 302 is taper slag notch, and 303 is smoke inlet, and 304 is the 3rd exhanst gas outlet, and 305 supply air port for combustion air;
4 is boiler body, and 402 is furnace chamber a, and 403 is furnace chamber b, 404 is furnace chamber c, and 405 is water-cooling wall, and 406 is superheater, 407 is vaporizer, and 408 is drum, and 409 is the first down-comer, 410 is the second down-comer, and 411 is steam output device, and 412 is to water input system, 413 is condenser, 414 is water pump, and 415 is oxygen-eliminating device, and 416 is booster water pump, 417 is moisturizing pipeline, 418 is economizer, and 419 is flue gas purification system, and 420 is aeration tower, 421 is cleaner unit, 422 is air-introduced machine, and 423 is chimney, and 424 is air preheater.
Detailed description of the invention
Referring to Fig. 1 to Fig. 7, for utilizing a kind of preferred embodiment of the steam generator system of refuse gasification burning synthesis gas.
In the present embodiment, steam generator system includes gasification furnace 103, incinerator 104, boiler body 4 and circulation air feed system thereof, can seal or connect between gasification furnace 103 and incinerator 104, the lower section of gasification furnace 103 siege and incinerator 104 siege be respectively arranged below with two independent air compartments 107, the face arch of described gasification furnace 103, rear arch are respectively provided with secondary for air port 115, the vault of described gasification furnace 103 arranges the first exhanst gas outlet 112, and the vault of described incinerator 104 arranges the second exhanst gas outlet 113.
Described boiler body 4 has cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403, furnace chamber c404, the lower end of described cyclone combustion chamber 3 arranges smoke inlet 303, the smoke inlet 303 of described cyclone combustion chamber 3 is connected with the first exhanst gas outlet 112 of gasification furnace 103 by pipeline, cyclone combustion chamber 3 upper end is the 3rd exhanst gas outlet 304, described smoke inlet the 303, the 3rd exhanst gas outlet 304 is positioned at the opposition side of cyclone combustion chamber 3 circumferential wall, and the top of cyclone combustion chamber 3 arranges combustion chamber ignition combustion-supporting hole 301. In order to discharge from the 3rd exhanst gas outlet 304 after making flue gas, combustion air be sufficiently mixed in cyclone combustion chamber 3, burning, described cyclone combustion chamber 3 is provided with some combustion airs for air port 305, and described some combustion airs supply air port 305 between smoke inlet the 303, the 3rd exhanst gas outlet 304. Described smoke inlet the 303, the 3rd exhanst gas outlet 304, combustion air are radially or tangentially arranged along cyclone combustion chamber 3 circumferential wall for air port 305. 3rd exhanst gas outlet 304 of cyclone combustion chamber 3 upper end connects with the upper end of furnace chamber a402, described furnace chamber a402, furnace chamber b403 lower end connection, the upper end of described furnace chamber b403 arranges waste gas outlet, the lower end of described cyclone combustion chamber 3 is provided with the taper slag notch 302 that radius from top to bottom diminishes, and this taper slag notch 302 connects with the burner hearth of gasification furnace 103. Described furnace chamber a402, furnace chamber b403 are connected with common slag notch, and this common slag notch connects with the burner hearth of gasification furnace 103. In the present embodiment, this common slag notch and taper slag notch 302 all connect with the afterbody changeover portion of gasification furnace 103 burner hearth.
It is circumferentially with ringwise water-cooling wall 405 along inwall in described cyclone combustion chamber 3, it is provided with superheater 406 in described furnace chamber a402, vaporizer 407 it is provided with in furnace chamber b403, the top of boiler body 4 arranges drum 408, described cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403 is respectively positioned on below drum 408, described drum 408 is provided with soda pop import, for inputting steam water interface, it is provided with water separator in drum 408, for separating steam water interface, drum 408 connects the water inlet of water-cooling wall 405 by the first down-comer 409, for exporting the isolated water of water separator, drum 408 connects the water inlet of vaporizer 407 by the second down-comer 410, for exporting the isolated water of water separator, described water-cooling wall 405, the venthole of vaporizer 407 connects the air intake of drum 408 respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum 408 connects the air intake of superheater 406 by pipeline, for by the high-temperature steam input superheater 406 of backflow, the venthole output superheated steam of described superheater 406.
In the present embodiment, steam generator system also includes steam output device 411, to water input system 412, in the present embodiment, described steam output device 411 is steam turbine. The venthole of described superheater exports superheated steam by pipeline to steam output device 411, described include being sequentially connected in series by pipeline to water input system 412 condenser 413, water pump 414, oxygen-eliminating device 415, booster water pump 416, water source is connected by moisturizing pipeline 417 between described water pump 414, oxygen-eliminating device 415, the water inlet of described condenser 413 connects the discharge outlet of steam output device 411 by pipeline, and the outlet of described booster water pump 416 connects the soda pop import of drum 408 by pipeline.
The upper end of described furnace chamber c404 connects with the waste gas outlet of furnace chamber b403 upper end, the lower end of furnace chamber c404 arranges Waste gas outlet, it is provided with economizer 418 in described furnace chamber c404, the water inlet of described economizer 418 connects with the outlet of booster water pump 416, the outlet of described economizer 418 and the soda pop inlet communication of drum 408. The Waste gas outlet of furnace chamber c404 connects flue gas purification system 419, aeration tower 420 that described flue gas purification system 419 includes being sequentially connected in series along discharge directions, cleaner unit 421, air-introduced machine 422, chimney 423.
Described circulation air feed system includes dust arrester the 201, first blower fan the 202, second blower fan 203, in the present embodiment, described dust arrester 201 is cyclone separator or hot precipitator 421, and described first blower fan 202 is high-temperature blower, and described second blower fan 203 is aerator. the inlet end of described dust arrester 201 is connected by pipeline and the second exhanst gas outlet 113, the outlet side of described dust arrester 201 is connected by the inlet end of pipeline and the first blower fan 202, the outlet side of described first blower fan 202 connects the house steward of the first manifold 204, the arm of described first manifold 204 respectively with each air compartment 107 of the lower section of gasification furnace 103 moving hearth, each secondary on gasification furnace 103 connects for the smoke inlet 303 of air port 115 and cyclone combustion chamber 3, each arm of described first manifold 204 is respectively provided with the first adjustment valve 207, the air inlet of described second blower fan 203 and material pit atmosphere, the foul smell distributed in material pit can be absorbed, the gas outlet of described second blower fan 203 connects the house steward of the second manifold 205, the arm of described second manifold 205 respectively with incinerator 104 moving hearth below each air compartment 107 and the inlet end of dust arrester 201, outlet side connects, each arm of described second manifold 205 is respectively provided with the second adjustment valve 208. also include the 3rd manifold 206, the house steward of described 3rd manifold 206 connects with the gas outlet of the second blower fan 203, each arm of described 3rd manifold 206 connects for air port 305 with some combustion airs respectively, and each arm of the 3rd manifold 206 is respectively provided with the 3rd adjustment valve 209. it is provided with air preheater 424 in described furnace chamber c404, in the present embodiment, air preheater 424 is positioned at the downstream of economizer 418, the outlet side of described second blower fan 203 connects the air inlet of air preheater 424, the gas outlet of air preheater 424 connects the house steward of the second manifold 206, and the described house steward of the 3rd manifold 206 connects with the gas outlet of air preheater 424.
Referring to Fig. 6, Fig. 7, concrete structure and circulation air feed system thereof for stoker fired grate formula refuse gasification incinerator 1, including grate 101, and the feed hopper 102, gasification furnace 103 and the incinerator 104 that set gradually along feedstock direction on grate 101, the rear of incinerator 104 is the slag notch 116 of incinerator 104, described incinerator 104 is provided with cinder notch 117, the slag notch 116 of described incinerator 104 is positioned at incinerator and falls the underface of cinder notch 117, described in the cinder notch 117 that falls connected with the slag notch of dust arrester 201 by pipeline.This sealing structure is effective, it is possible to effectively holds and reduces pollutant discharge amount. The carbon-containing part of rubbish is mainly gasified by gasification furnace 103, and discharges flammable gasification flue gas and rubbish residue, and incinerator 104 is substantially carried out the burn processing of carbon residue, and discharges innoxious lime-ash. The siege 105 of gasification furnace 103 and incinerator 104 all adopts the stoker fired grate formula moving hearth 105 that segmentation independently drives, the fire grate of stoker fired grate formula moving hearth 105 is to be forward lapped by moving grate plate and fixed grate plate, collect alternately and form, adjacent many groups moving grate plate is connected by pull bar, adopts a set of driving device to drive. Stoker fired grate formula moving hearth 105 is as the carrier of conveying garbage, and its embodiment can be all types of moving hearths 105, such as chain-plate type, drum-type, multisection type fire grate system etc.
Described grate 101 is provided with garbage pusher device 106, described garbage pusher device 106 is positioned at the lower section of feed hopper 102, for the rubbish in feed hopper 102 is pushed in gasification furnace 103, the lower section of gasification furnace 103 moving hearth 105 and incinerator 104 moving hearth 105 be respectively arranged below with at least one air compartment 107 being independently arranged, in the present embodiment, the fire grate corresponding with an air compartment 107 of gasification furnace 103 first half, driving device, dryer section as gasification furnace 103 siege 105, one time latter half of with gasification furnace 103 fire grate that air compartment 107 is corresponding, driving device is as the gasification section of gasification furnace 103 siege 105. the dryer section of gasification furnace 103 siege 105, gasification section can be respectively adopted 1-2 independent air compartment 107 air feed, it is also possible to be respectively adopted 3-4 independent air compartment 107 air feed. certainly, fire grate, driving device and an air compartment 107 also can not be correspondingly arranged, and better regulate the bed of material on moving hearth 105 and move and air distribution relation. incinerator 104 can adopt 1-4 independent air compartment 107 air feed, burns rear lime-ash and gets rid of from slag notch, enters next step treatment process.
It is provided with windrow seal section 108 between described feed hopper 102, gasification furnace 103, garbage pusher device 106 work enters position and is in windrow seal section 108, garbage raw material is put into from feed hopper 102 and is fallen, garbage pusher device 106 retreats, advancing, pusher forms windrow at windrow seal section 108 back and forth again, makes gasification furnace 103 entrance be in windrow sealing state, strengthen gasification furnace 103 sealing effectiveness, solve garbage pusher device 106 and the easy leakage problem of feed hopper 102. When needing complete prepurging to dispose all rubbish, garbage pusher device 106 forward impelling half stroke again, rubbish is pushed completely in gasification furnace 103, makes gasification furnace 103 entrance lose windrow sealing effectiveness. Grate 101 part between described gasification furnace 103 and incinerator 104 leaves transition fall slag section 109, the described transition slag section 109 that falls is provided with residue pusher 110, for the rubbish residue fallen in gasification furnace 103 is pushed in incinerator 104, transition fall slag section 109 pile up rubbish residue time can be at windrow sealing state, strengthen gasification furnace 103 sealing effectiveness, solve to go here and there between gasification furnace 103, incinerator 104 problem of wind. In the present embodiment, described transition falls and is provided with isolating door 111 to be opened/closed in slag section 109, and described isolating door 111 is for cutting off gasification furnace 103, incinerator 104. At the furnace lifting initial stage or when needing to control to alter wind between gasification furnace 103 and incinerator, close isolating door 111, after the slag section that falls stacks the formation windrow sealing of a certain amount of residue, isolating door 111 can be kept to open, coordinate to use with the residue pusher 110 being arranged below, to realize rubbish continuous gasification burning disposal.
The upper end of described gasification furnace 103, incinerator 104 upper end respectively in arching upward shape, the face arch of described gasification furnace 103 is flat construction, or, the face arch of gasification furnace 103 is that rear end is inclined upwardly structure. The vault of described gasification furnace 103 arranges the first exhanst gas outlet 112, and the vault of described incinerator 104 arranges the second exhanst gas outlet 113, and the arching upward of described gasification furnace 103 upper end, the arching upward of incinerator 104 upper end are respectively equipped with igniting combustion supporting hole 114. Gasification flue gas is got rid of from first exhanst gas outlet the 112, second exhanst gas outlet 113, and gasification furnace 103 furnace cavity is compared with traditional incinerator, relatively reduced; Forward and backward arch and moving hearth 105 relative position diminish, and decrease the space that incinerator takies, and are also easier to insulation, decrease the amount of leakage of heat, be conducive to rubbish fully to gasify. The face arch of described gasification furnace 103, rear arch are respectively provided with secondary for air port 115.
The flue gas generation certain pressure that gasification furnace 103 First air is high-temperature blower extraction incinerator 104 blasts in an air compartment 107 corresponding below gasification furnace 103 stoker fired grate formula moving hearth 105, again through an air holes spray penetration rubbish on moving hearth 105, gasify, regulate valve 207 by first on corresponding each arm and regulate wind supply quantity. The flue gas generation certain pressure that gasification furnace 103 secondary wind is high-temperature blower extraction incinerator 104 blasts gasification furnace 103 burner hearth, and its spray-hole is arranged on gasification furnace 103 face arch and rear arch. Forward and backward arch is provided with secondary for air port 115, improves gasification efficiency, strengthen polymer substance in flue gas and decompose. Rear arch has igniting combustion supporting hole 114, furnace lifting, baker and stablize temperature in gasification furnace 103 and use, regulate valve 207 by first on corresponding each arm and regulate wind supply quantity. The air inlet of described second blower fan 203 and atmosphere, the air that the second blower fan 203 blasts can be cold wind or the hot blast after heating. The gas outlet of described second blower fan 203 connects the house steward of the second manifold 205, the arm of described second manifold 205 connects with each air compartment 107 below incinerator 104 moving hearth 105 and the inlet end of dust arrester 201, outlet side respectively, and each arm of described second manifold 205 is respectively provided with the second adjustment valve 208. Incinerator 104 First air is that the air of certain pressure is blasted in an air compartment 107 corresponding below stoker fired grate formula moving hearth 105 by aerator, again through an air holes spray penetration residue on moving hearth 105, carry out residual burning, regulate valve 207 by first on corresponding each arm and regulate wind supply quantity. The inlet end of dust arrester 201, outlet side air intake be homoiothermic air feed, homoiothermic air feed is that the air of certain pressure is blasted incinerator 104 and exports (i.e. cyclone inlet) and carry out homoiothermic by aerator, simultaneously, Cyclone outlet (i.e. high-temperature blower entrance) blasts further homoiothermic, regulates valve 207 by first on corresponding each arm and regulates wind supply quantity.
Circulation air feed system is to the waste disposal method after stoker fired grate formula refuse gasification incinerator air feed, and the method sequentially includes the following steps:
Step A, close the gate of stoker fired grate formula refuse gasification incinerator 1 and atmospheric vent, start machinery grate-type refuse gasification incinerator 1, garbage raw material is put into feed hopper 102, garbage pusher device 106 pusher back and forth, the garbage raw material fallen from feed hopper 102 is pushed feed hopper 102, windrow seal section 108 between gasification furnace 103, windrow seal section 108 is made to form windrow sealing state, unnecessary rubbish falls into the moving hearth 105 of gasification furnace 103, the moving hearth 105 of gasification furnace 103 works, rubbish is conveyed into transition fall slag section 109, residue pusher 110 pusher back and forth, the rubbish in slag section 109 that transition fallen pushes in incinerator 104, the moving hearth 105 of incinerator 104 works conveying garbage, until rubbish is at gasification furnace 103, the moving hearth 105 of incinerator 104 is accumulated to required thickness: 0.6-0.8m, , during baker, the rubbish piled up can protect moving hearth 105, prevent scaling loss siege 105.Stop feeding intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 and incinerator 104 quits work, then, communicated with the burner hearth of gasification furnace 103 and incinerator 104 respectively by the igniting combustion supporting hole 114 of gasification furnace 103 and incinerator 104 with start-up burner, under the effect of start-up burner, gasification furnace 103 and incinerator 104 are carried out furnace lifting, baker, treats that this process stabilization completes, make gasification furnace 103 and incinerator 104 burner hearth reach predetermined temperature 600-700 DEG C; Baker in order that Natural Water in elimination lining and water of crystallization, in order to avoid when going into operation owing to furnace temperature rises too fast, moisture content expands in a large number to cause body of heater spalling, bubbling or deform even furnace wall and collapses, and affects intensity and the service life of heating furnace furnace wall.
Step B, start and regulate circulation air feed system 2, regulate gasification furnace 103, technological parameter (the pusher speed of incinerator 104 and circulation air feed system 2, fire grate speed, pathogenic wind-warm, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, negative pressure in stove, thickness of feed layer etc.), feed intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 works conveying garbage, rubbish proceeds by burning in the burner hearth of gasification furnace 103, rubbish residue transition fall slag section 109 place pile up formed windrow seal, the stove chamber inner combustion state temperature making gasification furnace 103 is stabilized to more than 850 DEG C, moving hearth 105 work of incinerator 104 exports the rubbish residue after burning.
Step C, regulate each technological parameter (in pusher speed, fire grate speed, pathogenic wind-warm, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, stove negative pressure, thickness of feed layer etc.) of gasification furnace 103, incinerator 104 and circulation air feed system 2, rubbish is gasified by gasification furnace 103 gradually, gasification temperature is stable between 700-800 DEG C, making the stable high-temperature flue gas produced containing 10%-20% synthesis gas of gasification furnace 103, gasification furnace 103 vaporized state stably carries out low temperature, middle temperature or high-temperature gasification. Make incinerator 104 fired state temperature stabilization to more than 850 DEG C, it is achieved rubbish continuous gasification burning disposal; Each technological parameter of cyclone combustion chamber 3 need to be regulated simultaneously, make cyclone combustion chamber 3 the 3rd exhanst gas outlet 304 temperature stabilization to more than 850 DEG C.
Step D, need to overhaul or during blowing out, stopping feeds intake, regulate the technological parameter of gasification furnace 103, incinerator 104 and circulation air feed system 2, gasification furnace 103 is made to be gradually restored to fired state, after rubbish and rubbish residue burn, close 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 regulated simultaneously, make gasification furnace 103 be gradually restored to fired state.
What finally illustrate is, preferred embodiment above is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail by above preferred embodiment, but skilled artisan would appreciate that, in the form and details it can be made various change, without departing from this utility model claims limited range.

Claims (10)

1. one kind utilizes the steam generator system that refuse gasification burns synthesis gas, including boiler body, it is characterized in that: described boiler body has cyclone combustion chamber, furnace chamber a, furnace chamber b, the lower end of described cyclone combustion chamber arranges smoke inlet, cyclone combustion chamber upper end is the 3rd exhanst gas outlet, 3rd exhanst gas outlet of cyclone combustion chamber upper end connects with the upper end of furnace chamber a, described furnace chamber a, the lower end connection of furnace chamber b, the upper end of described furnace chamber b arranges waste gas outlet, described cyclone firing is indoor circumferentially arranged with ringwise water-cooling wall, it is provided with superheater in described furnace chamber a, it is provided with vaporizer in furnace chamber b, the top of boiler body arranges drum, described cyclone combustion chamber, furnace chamber a, furnace chamber b is respectively positioned on below drum, described drum is provided with soda pop import, water separator it is provided with in drum, for separating steam water interface, drum connects the water inlet of water-cooling wall by the first down-comer, for exporting the isolated water of water separator, drum connects the water inlet of vaporizer by the second down-comer, for exporting the isolated water of water separator, described water-cooling wall, the venthole of vaporizer connects the air intake of drum respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum connects the air intake of superheater by pipeline, for by the high-temperature steam input superheater of backflow, the venthole output superheated steam of described superheater.
2. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 1, it is characterized in that: also include steam output device, to water input system, the venthole of described superheater exports superheated steam by pipeline to steam output device, the described condenser including to water input system being sequentially connected in series by pipeline, water pump, oxygen-eliminating device, booster water pump, described water pump, water source is connected by moisturizing pipeline between oxygen-eliminating device, the water inlet of described condenser connects the discharge outlet of steam output device by pipeline, the outlet of described booster water pump connects the soda pop import of drum by pipeline.
3. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 2, it is characterised in that: described steam output device is steam turbine.
4. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 2, it is characterized in that: described boiler body has furnace chamber c, the upper end of described furnace chamber c connects with the waste gas outlet of furnace chamber b upper end, the lower end of furnace chamber c arranges Waste gas outlet, it is provided with economizer in described furnace chamber c, the water inlet of described economizer connects with the outlet of booster water pump, the soda pop inlet communication of the outlet of described economizer and drum.
5. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 4, it is characterized in that: the Waste gas outlet of furnace chamber c connects flue gas purification system, aeration tower that described flue gas purification system includes being sequentially connected in series along discharge directions, cleaner unit, air-introduced machine, chimney.
6. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 1, it is characterized in that: also include the gasification furnace of stoker fired grate formula refuse gasification incinerator, incinerator and circulation air feed system thereof, can seal or connect between gasification furnace and incinerator, the lower section of gasification furnace siege and incinerator siege be respectively arranged below with at least one independent air compartment, the face arch of described gasification furnace, rear arch is respectively provided with secondary for air port, the vault of described gasification furnace arranges the first exhanst gas outlet, the smoke inlet of described cyclone combustion chamber is by pipeline and the connection of the first exhanst gas outlet, the vault of described incinerator arranges the second exhanst gas outlet,
Described circulation air feed system includes dust arrester, first blower fan, second blower fan, the inlet end of described dust arrester is connected by pipeline and the second exhanst gas outlet, the outlet side of described dust arrester is connected by the inlet end of pipeline and the first blower fan, the outlet side of described first blower fan connects the house steward of the first manifold, the arm of described first manifold respectively with each air compartment of the lower section of gasification furnace moving hearth, each secondary on gasification furnace is for the smoke inlet connection of air port and cyclone combustion chamber, each arm of described first manifold is respectively provided with the first adjustment valve, the air inlet of described second blower fan and atmosphere, the gas outlet of described second blower fan connects the house steward of the second manifold, the arm of described second manifold respectively with incinerator moving hearth below each air compartment and the inlet end of dust arrester, outlet side connects, each arm of described second manifold is respectively provided with the second adjustment valve.
7. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 6, it is characterized in that: described boiler body has furnace chamber c, the upper end of described furnace chamber c connects with the waste gas outlet of furnace chamber b upper end, the lower end of furnace chamber c arranges Waste gas outlet, it is provided with air preheater in described furnace chamber c, the outlet side of described second blower fan connects the air inlet of air preheater, and the gas outlet of air preheater connects the house steward of the second manifold.
8. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 6, it is characterized in that: described cyclone combustion chamber is provided with some combustion airs for air port, described some combustion airs supply air port between smoke inlet, the 3rd exhanst gas outlet, also include the 3rd manifold, the described house steward of the 3rd manifold connects with the gas outlet of the second blower fan, each arm of described 3rd manifold connects for air port with some combustion airs respectively, and each arm of the 3rd manifold is respectively provided with the 3rd adjustment valve.
9. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 6, it is characterised in that: described furnace chamber a, furnace chamber b are connected with common slag notch, and this common slag notch connects with the burner hearth of gasification furnace.
10. the steam generator system utilizing refuse gasification to burn synthesis gas according to claim 6, it is characterised in that: the lower end of described cyclone combustion chamber is provided with the taper slag notch that radius from top to bottom diminishes, and this taper slag notch connects with the burner hearth of gasification furnace.
CN201521131295.2U 2015-12-30 2015-12-30 Utilize waste gasification to burn boiler system of synthetic gas Withdrawn - After Issue CN205316286U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444145A (en) * 2015-12-30 2016-03-30 重庆科技学院 Boiler system utilizing garbage incineration synthesis gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444145A (en) * 2015-12-30 2016-03-30 重庆科技学院 Boiler system utilizing garbage incineration synthesis gas

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