CN103911179B - Coal gasification method and device - Google Patents
Coal gasification method and device Download PDFInfo
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- CN103911179B CN103911179B CN201410117504.1A CN201410117504A CN103911179B CN 103911179 B CN103911179 B CN 103911179B CN 201410117504 A CN201410117504 A CN 201410117504A CN 103911179 B CN103911179 B CN 103911179B
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02P20/10—Process efficiency
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The invention provides a kind of coal gasification method and device.This coal gasification method comprises: fine coal and vaporized chemical are sent into circle fluidized-bed gasification furnace and reacts; The vapourizing furnace flue gas that reaction is generated isolates returning charge fine coal and band fine coal air-flow through the first gas-solid separator, and returning charge fine coal is looped back circle fluidized-bed gasification furnace continuation reaction, and band fine coal air-flow is isolated coal gas and carbon containing flying dust through the second gas-solid separator; Carbon containing flying dust is sent into hotblast stove, makes it higher than 1300 DEG C of burnings, the hot-blast stove fume of generation is returned in circle fluidized-bed gasification furnace and participate in reaction, and the liquid slag that burning produces is discharged after cooling.Coal gasification method provided by the invention and device overcome existing use circulating fluidized bed and carry out the problem that in the product of gasification, flying dust amount is large, carbon content is high, and greatly reduce the carbon content of slag, thus reach the object that coal effectively utilizes.
Description
Technical field
The present invention relates to a kind of coal gasification method and device, belong to Coal Gasification Technology field.
Background technology
Coal Gasification Technology refers to reacts coal and vaporized chemical in circulating fluidized bed, thus produces raw gas, then raw gas purifying is obtained the process of clean coal gas.
At present, circle fluidized-bed gasification furnace is used to produce the method for coal gas as shown in Figure 1, superheated vapour and air or superheated vapour and oxygen mix vaporized chemical enter circle fluidized-bed gasification furnace 9 from vaporized chemical pipeline 4, fine coal enters the emulsion zone 23 of circle fluidized-bed gasification furnace 9 bottom from coal feeding hole 22, surrounded by a large amount of high temperature gasification agent rapidly afterwards, ignition, and to the ionized motion of vapourizing furnace under the effect of rising flue gas flow.Oversize particle enters the 26(suspension region, freeboard of fluidized bed, top of vapourizing furnace) after adherently under gravity to flow downward, gas-solid mixture enters gas-solid separator 7 after leaving burner hearth from vapourizing furnace top.After gas-solid separator 7, a large amount of solid fine coal is separated through returning charge pipeline 5 loopback burner hearth, and carry out circulating combustion, the fine coal be not separated enters back-end ductwork with flue gas, after fly-ash separator 6 filters, obtain coal gas 12.Solid slag after pulverized coal friring is discharged from the dry ash extraction mouth of vapourizing furnace bottom.
But above-mentioned using method adopts dry ash extraction, and because gasification operation temperature is lower than the ash fusion point of coal, in solid slag, carbon content is higher; And it is larger to carry flying dust amount secretly in the coal gas produced.
Summary of the invention
The invention provides a kind of coal gasification method and device, overcome existing use circulating fluidized bed and carry out the problem that in the product of gasification, flying dust amount is large, carbon content is high, and greatly reduce the carbon content of slag, thus reach the object that coal effectively utilizes.
The invention provides a kind of coal gasification method, comprise the following steps,
Fine coal and vaporized chemical are sent into circle fluidized-bed gasification furnace react;
The vapourizing furnace flue gas that described reaction is generated isolates returning charge fine coal and band fine coal air-flow through the first gas-solid separator, and described returning charge fine coal is looped back described circle fluidized-bed gasification furnace continuation reaction, described band fine coal air-flow is isolated coal gas and carbon containing flying dust through the second gas-solid separator;
Described carbon containing flying dust is sent into hotblast stove, makes it higher than 1300 DEG C of burnings, the hot-blast stove fume of generation is returned in described circle fluidized-bed gasification furnace and participate in reaction, and the liquid slag that burning produces is discharged after cooling.
Further, described carbon containing flying dust is sent into hotblast stove, and makes the mass ratio of oxygen and carbon containing flying dust in hotblast stove be 1.4-2.0.
Further, described carbon containing flying dust is sent into hotblast stove, makes it 1300-1400 DEG C of burning.
Further, described hot-blast stove fume is returned in the freeboard of fluidized bed of described circle fluidized-bed gasification furnace and react.
Further, described liquid slag is discharged by the cooling of water seal slag bath is rear.
Further, make described band fine coal air-flow be introduced into waste heat recovery apparatus and after heat exchange, enter the second gas-solid separator as thermal medium again.
Further, the cold medium in described waste heat recovery apparatus is water and air, or water and oxygen.
The present invention also provides a kind of coal gasification apparatus for aforesaid method, and described coal gasification apparatus comprises circle fluidized-bed gasification furnace, the first gas-solid separator, the second gas-solid separator and hotblast stove; Wherein,
Described circle fluidized-bed gasification furnace is provided with coal feeding hole, gasification agent inlet, vapourizing furnace exhanst gas outlet, returning charge mouth and secondary air entrance; Described vapourizing furnace exhanst gas outlet is connected with the import of described first gas-solid separator;
The solid outlet of described first gas-solid separator is connected with the returning charge mouth of circle fluidized-bed gasification furnace, and pneumatic outlet is connected with the import of described second gas-solid separator;
The pneumatic outlet of described second gas-solid separator connects product collecting device, and solid outlet connects the import of described hotblast stove;
Described hotblast stove is also provided with slag-drip opening and hot-blast stove fume outlet, and described hot-blast stove fume outlet is connected with the secondary air entrance of described circle fluidized-bed gasification furnace.
Further, also comprise waste-heat recovery device, its thermal medium inlet is connected with the pneumatic outlet of described first gas-solid separator, and thermal medium outlet is connected with the import of described second gas-solid separator; Cold media outlet is connected with the gasification agent inlet of described circle fluidized-bed gasification furnace.
Further, also comprise water seal slag bath, the top of described water seal slag bath is provided with liquid slag import and is connected with the liquid slag discharge outlet of hotblast stove, and the bottom of described water seal slag bath is provided with the liquid slag outlet that can control to open and close.
The enforcement of technical solution of the present invention, at least has following advantage:
1, the carbon containing flying dust produced in gasification is effectively recycled by coal gasification method of the present invention, greatly reduces the carbon content in slag charge.
2, the hot-blast stove fume that the burning of carbon containing flying dust produces returns in circle fluidized-bed gasification furnace and reacts by coal gasification method of the present invention, not only increases the utilization ratio of gasification raw material, and reduces facility investment expense and the working cost of process carbon containing flying dust.
3, coal gasification method of the present invention improves coal gas production capacity and the calorific value of circle fluidized-bed gasification furnace simultaneously, thus reaches the object of coal comprehensive utilization.
4, coal gasification method of the present invention effectively reduces the fly ash content in circle fluidized-bed gasification furnace gasification product.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram that coal gasification method of the prior art uses.
The device schematic diagram that Fig. 2 uses for the coal gasification method provided in one embodiment of the present of invention.
The device schematic diagram that Fig. 3 uses for the coal gasification method provided in another embodiment of the present invention.
Description of reference numerals
The import of 1-waste heat recovery apparatus 2-water inlet 3-air or oxygen
4-vaporized chemical pipeline 5-returning charge pipeline 6-fly-ash separator
7-first gas-solid separator 8-vapourizing furnace flue 9-circle fluidized-bed gasification furnace
10-is with fine coal airflow line 11-second gas-solid separator 12-coal gas
13-carbon containing flying dust pipeline 14-hotblast stove 15-hot-blast stove fume pipeline
16-combustion air import 17-slag tap mouth 18-water seal slag bath
19-cold-slag slagging pipe 20-secondary air inlet 21-fluid-tight entrance of cooling water
22-coal feeding hole 23-emulsion zone 24-dry ash extraction mouth
25-air compartment 26-freeboard of fluidized bed
Embodiment
Accompanying drawing referring to the embodiment of the present invention describes the present invention more fully.But the present invention can embody in many different forms, should not be construed as the embodiment being limited to and stating herein.
The device that coal gasification method in one embodiment of the invention uses as shown in Figure 2.This device comprises circle fluidized-bed gasification furnace 9, first gas-solid separator 7 and the second gas-solid separator 11 and hotblast stove 14.
Circle fluidized-bed gasification furnace 9 inside is divided into the emulsion zone 23 of bottom and the freeboard of fluidized bed 26 on top.The sidewall of emulsion zone is provided with dry ash extraction mouth 24, coal feeding hole 22 and returning charge mouth, and bottom is provided with air compartment 25, and air compartment 25 is provided with the gasification agent inlet be communicated with vaporized chemical pipeline 4, and this gasification agent inlet is lower than coal feeding hole 22.The top of freeboard of fluidized bed 26 is provided with vapourizing furnace exhanst gas outlet.The sidewall of emulsion zone 23 and/or freeboard of fluidized bed 26 is also provided with secondary air inlet 20.
First gas-solid separator 7 is provided with import, returning charge fine coal outlet (i.e. solid outlet) and band fine coal air stream outlet (i.e. pneumatic outlet), wherein, the import of the first gas-solid separator 7 is communicated with vapourizing furnace exhanst gas outlet by vapourizing furnace flue 8, the outlet of returning charge fine coal is communicated with by the returning charge mouth of returning charge pipeline 5 with described circle fluidized-bed gasification furnace 9, and band fine coal air stream outlet is then by being with the inlet communication of fine coal airflow line 10 and the second gas-solid separator 11.Band fine coal air-flow flue gas realizes one-level gas solid separation in the first gas-solid separator 7.
Described second gas-solid separator 11 is provided with import, the outlet of carbon containing flying dust (i.e. solid outlet) and gas exit (i.e. pneumatic outlet), and described band fine coal pneumatic separation is become coal gas and carbon containing flying dust.Gas exit is connected with collection device, the outlet of carbon containing flying dust is connected with the import of hotblast stove 14 by carbon containing flying dust pipeline 13, hotblast stove 14 bottom is provided with slag tap mouth 17, sidewall is provided with combustion air import 16 and hot-blast stove fume outlet, and described hot-blast stove fume outlet is connected with described secondary air inlet 20 by hot-blast stove fume pipeline 15.
Said apparatus can also comprise water seal slag bath 18, described water seal slag bath 18 is provided with fluid-tight entrance of cooling water 21, liquid slag import and outlet, described liquid slag import is connected with the slag tap mouth of described hotblast stove, outlet is communicated with cold-slag slagging pipe 19, from cold-slag slagging pipe 19 discharges after the liquid slag of high temperature being cooled by water-cooling pattern.
The coal gasification method provided at the present embodiment comprises the following steps:
The first step, sends fine coal and vaporized chemical into circle fluidized-bed gasification furnace and reacts.
This process is specially: the emulsion zone 23 raw material fine coal (particle diameter < 10mm) being sent into circle fluidized-bed gasification furnace 9 by coal feeding hole 22, contact with the vaporized chemical (usually can be the mixed gas of high-temperature steam and air or superheated vapour and oxygen) from vaporized chemical pipeline 4 and redox reaction occurs, temperature of reaction is generally 950-1000 DEG C, and move in the freeboard of fluidized bed 26 to top under the effect of rising flue gas flow, continue to be obtained by reacting vapourizing furnace flue gas.Containing coal gas, unreacted fine coal, fugitive constituent and flying dust completely in this vapourizing furnace flue gas.The inert substance (such as ash grades) do not reacted in fine coal is discharged from dry ash extraction mouth 24.
In above-mentioned coal gasification method, enter the raw material fine coal incomplete combustion of circle fluidized-bed gasification furnace 9 to produce coal gas, O in vaporized chemical
2can identical with existing coal gasification method with the mass ratio of raw material fine coal, can be such as 0.45-0.60.The temperature of described vaporized chemical can be 700-750 DEG C, and being conducive to the temperature of reaction controlled in emulsion zone 23 is 950-1000 DEG C.
Second step, the high-temperature gasification kiln gas that fine coal reaction produces enters the first gas-solid separator 7 through vapourizing furnace flue 8, is isolated to band fine coal air-flow and returning charge fine coal.Wherein, returning charge fine coal is got back to emulsion zone 23 through returning charge pipeline 5 and is continued circulating reaction; Band fine coal air-flow band fine coal airflow line 10 enters the second gas-solid separator 11, is isolated to clean gas 12 and carbon containing flying dust.
Described first gas-solid separator 7 can be high temperature cyclone separator, carries out flash trapping stage to vapourizing furnace flue gas, makes the larger fine coal of wherein particle diameter return circle fluidized-bed gasification furnace 9 from returning charge fine coal outlet discharge and continues to participate in reaction.Described second gas-solid separator 11 can be sack cleaner, carries out the second-order separation further to the band fine coal air-flow through flash trapping stage, thus makes the coal gas 12 of production cleaner.
3rd step, sends described carbon containing flying dust into hotblast stove 14, and make it higher than 1300 DEG C of burnings, returned by the hot-blast stove fume of generation in described circle fluidized-bed gasification furnace 9 and react, the liquid slag that burning produces is discharged after cooling.
Detailed process is: described carbon containing flying dust is delivered to hotblast stove 14 by carbon containing flying dust pipeline 13, with the combustion air generation combustion reactions entering hotblast stove 14 from combustion air import 16, temperature of reaction can be higher than 1300 DEG C, generates liquid slag and hot-blast stove fume after the burning of carbon containing flying dust.Main containing CO in this hot-blast stove fume
2, N
2, O
2and H
2the gases such as O.
This liquid slag is discharged by the slag tap mouth 17 of hotblast stove 14, or collects after water seal slag bath 18 cools; Hot-blast stove fume enters circle fluidized-bed gasification furnace 9 through hot-blast stove fume pipeline 15 from secondary air inlet 20 and participates in reaction.
In the above-mentioned methods, described carbon containing flying dust is sent into hotblast stove, preferably makes it 1300-1400 DEG C of burning.Carbon containing flying dust is conducive to save energy 1300-1400 DEG C of burning, meanwhile, has suitable oxygen content at this temperature in hot-blast stove fume, is more conducive to the carrying out that hot-blast stove fume returns vapourizing furnace and fully reacts.
The preferably perfect combustion in hotblast stove 14 of described carbon containing flying dust, is conducive to improving its utilization ratio.Such as, in combustion air O
2can be 1.4-2.0 with the mass ratio of carbon containing flying dust, to control the perfect combustion in hotblast stove 14 of carbon containing flying dust.By detecting the O of hotblast stove 14 and hot-blast stove fume pipeline 15 interface
2content detects carbon containing flying dust combustion case, generally works as O
2mass content lower than 3% time, can think the perfect combustion in hotblast stove 14 of carbon containing flying dust.
Described hot-blast stove fume preferably returns the secondary air inlet 20 of the sidewall being arranged on freeboard of fluidized bed 26, is beneficial to avoid fine coal to be disturbed in the burning of emulsion zone 23, thus makes fine coal more abundant in the burning of emulsion zone 23; In addition because space, freeboard of fluidized bed 26 is comparatively large, gas velocity is comparatively slow, and being conducive to carbon dioxide conversion is carbon monoxide, thus improves the output of coal gas.
The gases such as in secondary air inlet 20 place and the above region of circle fluidized-bed gasification furnace 9 inside, the unreacted completely high-temperature hot-air kiln gas of fine coal and hotblast stove 14 continues redox reaction occurs, main generation CO; The fugitive constituent that simultaneous reactions generates is cracked into small molecules alkane and hydrogen at secondary air inlet 20 place and above region, makes in discharged producer gas not containing the material such as tar, hydrocarbon.
In hotblast stove 14, carbon containing flying dust and combustion air burn at higher than 1300 DEG C, produce liquid slag and the hot-blast stove fume that can carry out recycle, compared with the solid slag that the carbon content in this liquid slag and traditional coal gasification method produce, carbon content reduces, such as, can be reduced to less than 10%; In addition, because in whole gasifying process, carbon containing flying dust is consumed, the carbon content from the solid slag that dry ash extraction mouth 24 is discharged also effectively reduces.In addition, in the inventive method, isolated carbon containing flying dust is passed through hotblast stove 14 high-temp combustion, the hot-blast stove fume produced returns in circle fluidized-bed gasification furnace 9 and reacts, carbon containing flying dust is not only made to obtain effective second stage employ, process complexity when reducing process compared to existing technology and facility investment.The inventive method adds output and the calorific value of gasifier gas 12 simultaneously, substantially increases the comprehensive utilization ratio of coal.
As shown in Figure 3, be the device of the coal gasification method use in another embodiment of the present invention.With the device in Fig. 2 unlike, set up waste heat recovery apparatus 1, its gasification agent outlets that there is band fine coal air-flow (thermal medium) import and outlet, water (cold medium) import 2, air or oxygen (cold medium) import 3 and be connected with vaporized chemical pipeline 4.First connect the band fine coal air stream outlet of the first gas-solid separator 7 and the import of waste heat recovery apparatus 1 with fine coal airflow line 10, then connect the outlet of waste heat recovery apparatus 1 and the import of the second gas-solid separator 11.
In the coal gasification method that the present embodiment provides, water enters waste heat recovery apparatus 1 from water inlet 2, air or oxygen enters waste heat recovery apparatus 1 from air or oxygen import 3, the thermal zone fine coal air-flow separated from the first gas-solid separator 7 is introduced into waste heat recovery apparatus 1, high temperature gasification agent is mixed to form by after water wherein and air or oxygen heating, this high temperature gasification agent, through vaporized chemical pipeline 4, enters circle fluidized-bed gasification furnace 9 from air compartment 25 and participates in coal gasification reaction.After band fine coal air-flow after heat-obtaining leaves waste heat recovery apparatus 1 from band fine coal air stream outlet, then enter the second gas-solid separator 11.
Arranging of waste heat recovery apparatus 1 can the more than needed heat of accommodation zone fine coal air-flow, and heat air agent is to suitable temperature simultaneously, and the heat of the heat and reaction needed that make vaporized chemical bring circle fluidized-bed gasification furnace 9 into matches.Such as, in the above-described embodiments, vapourizing furnace load, under the state of 90-105%, can make vaporized chemical enter the temperature of vapourizing furnace at 700-750 DEG C by waste heat recovery apparatus 1, thus meet reaction needed.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a coal gasification method, is characterized in that, comprises the following steps,
Fine coal and vaporized chemical are sent into circle fluidized-bed gasification furnace react;
The vapourizing furnace flue gas that described reaction is generated isolates returning charge fine coal and band fine coal air-flow through the first gas-solid separator, and described returning charge fine coal is looped back described circle fluidized-bed gasification furnace continuation reaction, described band fine coal air-flow is isolated coal gas and carbon containing flying dust through the second gas-solid separator;
Described carbon containing flying dust is sent into hotblast stove, makes it 1300 DEG C-1400 DEG C burnings, the hot-blast stove fume of generation is returned in described circle fluidized-bed gasification furnace and participate in reaction, and the liquid slag that burning produces is discharged after cooling;
Described carbon containing flying dust is sent into hotblast stove, and makes the mass ratio of oxygen and carbon containing flying dust in hotblast stove be 1.4-2.0;
Make described carbon containing flying dust 1300-1400 DEG C of burning;
Described hot-blast stove fume is returned in the freeboard of fluidized bed of described circle fluidized-bed gasification furnace and react.
2. coal gasification method according to claim 1, is characterized in that, by described liquid slag by discharging after the cooling of water seal slag bath.
3. coal gasification method according to claim 1, is characterized in that, makes described band fine coal air-flow be introduced into waste heat recovery apparatus and after heat exchange, enters the second gas-solid separator as thermal medium again.
4. coal gasification method according to claim 3, is characterized in that, the cold medium in described waste heat recovery apparatus is water and air, or water and oxygen.
5. for a coal gasification apparatus for method described in any one of claim 1-4, it is characterized in that, described coal gasification apparatus comprises circle fluidized-bed gasification furnace, the first gas-solid separator, the second gas-solid separator and hotblast stove; Wherein,
Described circle fluidized-bed gasification furnace is provided with coal feeding hole, gasification agent inlet, vapourizing furnace exhanst gas outlet, returning charge mouth and secondary air entrance; Described vapourizing furnace exhanst gas outlet is connected with the import of described first gas-solid separator;
The solid outlet of described first gas-solid separator is connected with the returning charge mouth of circle fluidized-bed gasification furnace, and pneumatic outlet is connected with the import of described second gas-solid separator;
The pneumatic outlet of described second gas-solid separator connects product collecting device, and solid outlet connects the import of described hotblast stove;
Described hotblast stove is also provided with slag-drip opening and hot-blast stove fume outlet, and described hot-blast stove fume outlet is connected with the secondary air entrance of described circle fluidized-bed gasification furnace; Described secondary air entrance is arranged on the sidewall of described circle fluidized-bed gasification furnace freeboard of fluidized bed.
6. coal gasification apparatus according to claim 5, is characterized in that, also comprises waste-heat recovery device, and its thermal medium inlet is connected with the pneumatic outlet of described first gas-solid separator, and thermal medium outlet is connected with the import of described second gas-solid separator; Cold media outlet is connected with the gasification agent inlet of described circle fluidized-bed gasification furnace.
7. coal gasification apparatus according to claim 5, it is characterized in that, also comprise water seal slag bath, the top of described water seal slag bath is provided with liquid slag import and is connected with the liquid slag discharge outlet of hotblast stove, and the bottom of described water seal slag bath is provided with the liquid slag outlet that can control to open and close.
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| CN106554826B (en) * | 2015-09-30 | 2020-04-07 | 中国科学院工程热物理研究所 | Circulating fluidized bed coal gasification method and device with fine ash fusion |
| CN107880938B (en) * | 2016-09-30 | 2023-05-30 | 中国科学院工程热物理研究所 | Preheating type staged gasification method and device |
| CN108753368B (en) * | 2018-07-31 | 2024-03-05 | 安徽科达洁能股份有限公司 | Circulating fluidized bed coal gasification system and method |
| CN109749785A (en) * | 2019-02-17 | 2019-05-14 | 洛阳瑞华新能源技术发展有限公司 | Carbonaceous powder recirculating fluidized bed gasification method for transformation |
| CN110551529B (en) * | 2019-09-03 | 2020-09-15 | 中国科学院工程热物理研究所 | Gasification fly ash recycling treatment and heat energy recycling system and method |
| CN110791326B (en) * | 2019-11-21 | 2021-10-12 | 中国科学院工程热物理研究所 | Circulating fluidized bed gasification device with auxiliary gasification bed and gasification method |
| CN112111304B (en) * | 2020-09-24 | 2021-05-14 | 新奥科技发展有限公司 | Fly ash circulating gasification system and recovery treatment method of fly ash in coal gas |
| CN115029162B (en) * | 2022-08-10 | 2022-11-15 | 北京中瀚能源有限公司 | Gasification device and staged gasification method |
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| JPS57147590A (en) * | 1981-03-06 | 1982-09-11 | Agency Of Ind Science & Technol | Gasification of coal and its device |
| JPS60144390A (en) * | 1984-01-05 | 1985-07-30 | Mitsubishi Heavy Ind Ltd | Fluidized bed gasifier |
| CN1237152C (en) * | 2001-08-08 | 2006-01-18 | 煤炭科学研究总院北京煤化学研究所 | Powdered coal fluidized bed gasification method and gasification furnace |
| CN101063053B (en) * | 2007-05-14 | 2010-05-26 | 广东科达机电股份有限公司 | Circulating fluidized bed gas generator system |
| CN103184077A (en) * | 2013-03-21 | 2013-07-03 | 浙江工业大学化工设备有限公司 | Fine coal gasification method with fly ash compulsory recycling system |
| CN103450946B (en) * | 2013-09-02 | 2015-10-21 | 张荣光 | A kind of fluidized-bed gasification reaction method and device having independent combustion chamber |
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