CN101381629A - Dry coal dust gasification furnace for carbon dioxide emission reduction - Google Patents
Dry coal dust gasification furnace for carbon dioxide emission reduction Download PDFInfo
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- CN101381629A CN101381629A CNA2007101457762A CN200710145776A CN101381629A CN 101381629 A CN101381629 A CN 101381629A CN A2007101457762 A CNA2007101457762 A CN A2007101457762A CN 200710145776 A CN200710145776 A CN 200710145776A CN 101381629 A CN101381629 A CN 101381629A
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- carbon dioxide
- storage tank
- gas
- housing
- gasification furnace
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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
- Y02P20/141—Feedstock
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Abstract
The invention belongs to a fine coal gasification generator, in particular to a fine coal gasification furnace which can reduce the emission of carbon dioxide and improve the yield of coal gas. A gasification furnace and a feeding device are used as main production devices, and fine coal, water and oxygen are used as main raw materials. The technical key points are as follows: the gasification furnace is provided with a carbon dioxide feeding port which is communicated with a carbon dioxide storage tank and by which carbon dioxide is supplied to the gasified coal, and the carbon dioxide takes part in the reaction in the gasification furnace, thereby improving the yield of the coal gas and reducing the emission of the carbon dioxide.
Description
Technical field
The invention belongs to the coal gasification generating unit, particularly a kind of powder coal gasification furnace that can reduce Carbon emission.
Background technology
In the prior art, the coal gas that the gas gasification stove takes place is mainly used in the production of synthetic ammonia, methyl alcohol, in the whole process of production, can produce a large amount of carbonic acid gas, mostly directly is discharged in the atmosphere, causes atmospheric pollution.The existing device that is used for the coal gas generation is as State Patent Office disclosed 200520047515.No. 3 patent applications have designed a kind of multi-nozzle coal water slurry or powder coal gasification furnace that is used for coal water slurry or coal gasification.Vaporizer is made up of housing, technology nozzle box, technology nozzle, preheating burner chamber, preheating burner, and cinder notch was formed under housing inner lining refractory block, scrubbing-cooling chamber were reached by chilling ring, downtake, foam-breaking strip, can make efficiency of carbon conversion more than 98%.This technology can make carbon be converted into coal gas preferably, but the carbonic acid gas that produces in the subsequent production is not taken effective measures.
Advantageous effect
The purpose of this invention is to provide a kind of can the processing, reduce the producer gas generator of its discharging carbonic acid gas, simultaneously, by the use of carbonic acid gas, reach increase gas yield purpose, to overcome the deficiencies in the prior art.
Summary of the invention
The present invention is a major equipment with vapourizing furnace and feeding device, coal dust, water, oxygen, carbonic acid gas is that main production raw material is produced, vapourizing furnace is by housing, gas exit, slag-drip opening is formed, housing liner lagging material and refractory materials, lower housing portion has slag-drip opening and water seal, inside can be divided into three districts, be cooling area from top to bottom, the reduction zone, the combustion zone, the inner walls of cooling area is lined with water jacket, in lower housing portion, has opening for feed, opening for feed can be one or more, be connected with feeding device respectively, feeding device is by fine coal storage tank, oxygen storage tank, steam storage tank and carbon dioxide storage tank are formed, supply fine coal to vapourizing furnace, oxygen, steam and carbonic acid gas, wherein carbonic acid gas is the 10%-40% of gas generating amount for amount.Because carbonic acid gas reacts in vapourizing furnace, can generate a large amount of coal gas, thereby can improve the output of coal gas.Can improve the output of 10-15% than the vapourizing furnace of identical size.Can handle the carbonic acid gas that produces in the subsequent production process simultaneously, reduce its discharging.Carbon dioxide storage tank can directly be communicated with the opening for feed of vapourizing furnace, also can with N
2Gas blows coal dust together and enters in the vapourizing furnace.
The major function of combustion zone is oxidation and the burning of C.Coal dust CO
2Gas (or N
2, CO
2Gas mixture) sends into, at oxygen (or oxygen-rich air), superheated vapour, CO
2Under the pyritous condition, be a heterogenetic hybrid reaction, make C and O in the coal dust
2Reaction changes into CO and a small amount of CO
2Water vapor and C change into H
2With CO; 10-40%CO has been allocated on the top in this district into
2Enter the reduction zone in the lump with generation gas.
The reduction zone: the major function of local area is CO
2Be reduced the further reaction with C, the high-temperature gas mixture that comes from the combustion zone enters the reduction zone, excessive CO
2Change into CO and H with coal and water vapor
2, make up water steam and part coal dust are proceeded above-mentioned reaction again.
Cooling area: the high-temperature gas mixture body that comes from the reduction zone, major ingredient is: CO+H2, and its temperature is higher, meets or exceeds the ash fusion point of C, ability gas delivery and purification after must tentatively lowering the temperature, the major function of local area is reduced to the temperature of mixed gas below the ash fusion point of this coal dust.
Description of drawings
Accompanying drawing is a structural representation of the present invention
Specific embodiment
17 is vapourizing furnaces of the present invention among the figure, vapourizing furnace 17 is by housing 3, gas exit 12, slag-drip opening 1 and opening for feed 4, opening for feed 5, opening for feed 6 is formed, housing 3 liner lagging materials 8 and refractory materials 7, housing 3 bottoms are slag-drip opening 1 and water seal 2, inside can be divided into three districts, be cooling area 18 from top to bottom, reduction zone 19, combustion zone 20, housing 3 inwalls of cooling area 18 are lined with water jacket 10, water jacket 10 has water-in 9 and water outlet 11, in housing 3 bottoms, have opening for feed 4 and secondary feeds mouth 6, opening for feed is connected with feeding device, feeding device is by carbon dioxide storage tank 13, fine coal storage tank 14, oxygen storage tank 15, steam storage tank 16 is formed, and supplies with the vapourizing furnace raw material.Wherein the feed rate of carbonic acid gas is the 10-40% of gas yield.
According to embodiment 1, for the stable of the feed rate that guarantees carbonic acid gas and production and be easy to control, special feed carbon dioxide mouth 5 can be set, be communicated with carbon dioxide storage tank 13 separately, opening for feed 4 and secondary feeds mouth 6 are communicated with other storage tank.
Claims (3)
1, a kind of dry coal dust gasification furnace for carbon dioxide emission reduction, with vapourizing furnace (17) and feeding device is major equipment, coal dust, water, oxygen is that main production raw material is produced coal gas, vapourizing furnace (17) is by housing (3), gas exit (12), slag-drip opening (1) is formed, housing (3) liner lagging material (8) and refractory materials (7), slag-drip opening (1) and water seal (2) are arranged at housing (3) bottom, inside can be divided into three districts, be cooling area (18) from top to bottom, reduction zone (19), combustion zone (20), housing (3) inwall of cooling area (18) is lined with water jacket (10), in housing (3) bottom, have opening for feed (4), can be one or more, opening for feed (4) be connected with feeding device, and feeding device is by fine coal storage tank (14), oxygen storage tank (15), steam storage tank (16) is formed, it is characterized in that: feeding device also has carbon dioxide storage tank (13), supplies carbonic acid gas to gasification burner.
2, a kind of dry coal dust gasification furnace for carbon dioxide emission reduction according to claim 1, it is characterized in that: vapourizing furnace (17) is provided with secondary feeds mouth (6), with fine coal storage tank (14), oxygen storage tank (15), steam storage tank (16), carbon dioxide storage tank (13) are communicated with, can be one or more, the feed rate of carbonic acid gas be the 10%-40% of gas generating amount.
3, a kind of dry coal dust gasification furnace for carbon dioxide emission reduction according to claim 1 and 2 is characterized in that: vapourizing furnace (17) is provided with feed carbon dioxide mouth (5), is communicated with carbon dioxide storage tank (13), supplies with the carbonic acid gas of vapourizing furnace separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101457762A CN101381629A (en) | 2007-09-07 | 2007-09-07 | Dry coal dust gasification furnace for carbon dioxide emission reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101457762A CN101381629A (en) | 2007-09-07 | 2007-09-07 | Dry coal dust gasification furnace for carbon dioxide emission reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101381629A true CN101381629A (en) | 2009-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101457762A Pending CN101381629A (en) | 2007-09-07 | 2007-09-07 | Dry coal dust gasification furnace for carbon dioxide emission reduction |
Country Status (1)
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| CN (1) | CN101381629A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234544A (en) * | 2010-04-26 | 2011-11-09 | 秦皇岛玻璃工业研究设计院 | Gasification method and gasification equipment of pure oxygen coal gas for glass melting furnace |
| CN102994151A (en) * | 2012-12-13 | 2013-03-27 | 新疆宜化化工有限公司 | Method for preparing semi-water gas through oxygen-enrichment continuous gasification |
| CN102994161A (en) * | 2012-12-19 | 2013-03-27 | 青岛海众环保锅炉股份有限公司 | Pulverized coal gasifying unit and boiler system |
| CN103666576A (en) * | 2012-09-03 | 2014-03-26 | 刘君才 | Carbon dioxide coal gasifier |
| CN112812930A (en) * | 2021-02-05 | 2021-05-18 | 清华大学 | System and process for producing oxygen-containing organic matters from carbon dioxide and coal |
-
2007
- 2007-09-07 CN CNA2007101457762A patent/CN101381629A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234544A (en) * | 2010-04-26 | 2011-11-09 | 秦皇岛玻璃工业研究设计院 | Gasification method and gasification equipment of pure oxygen coal gas for glass melting furnace |
| CN103666576A (en) * | 2012-09-03 | 2014-03-26 | 刘君才 | Carbon dioxide coal gasifier |
| CN102994151A (en) * | 2012-12-13 | 2013-03-27 | 新疆宜化化工有限公司 | Method for preparing semi-water gas through oxygen-enrichment continuous gasification |
| CN102994161A (en) * | 2012-12-19 | 2013-03-27 | 青岛海众环保锅炉股份有限公司 | Pulverized coal gasifying unit and boiler system |
| CN112812930A (en) * | 2021-02-05 | 2021-05-18 | 清华大学 | System and process for producing oxygen-containing organic matters from carbon dioxide and coal |
| CN112812930B (en) * | 2021-02-05 | 2023-03-17 | 清华大学 | System and process for producing oxygen-containing organic matters from carbon dioxide and coal |
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Application publication date: 20090311 |