CN1417302A - New-type dry coal powder gas flow bed pressurizing gasifying furnace - Google Patents
New-type dry coal powder gas flow bed pressurizing gasifying furnace Download PDFInfo
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- CN1417302A CN1417302A CN 01134311 CN01134311A CN1417302A CN 1417302 A CN1417302 A CN 1417302A CN 01134311 CN01134311 CN 01134311 CN 01134311 A CN01134311 A CN 01134311A CN 1417302 A CN1417302 A CN 1417302A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Abstract
The pressurizing gasifying furnace is one single-nozzle and downward-spraying structure. The upper zone is the first gasifying chamber with hot wall, inner lining of refractory chromium corundum brick and back lining of heat insulating material. The lower zone is the second gasifying chamber with shell and tube water-cooling wall and heat insualting material in the furnace casing. In the first gasifying chamber, dry coal powder is burnt and gasified. Crude gas, molten slag and unreacted carbon grains enter downwards to the second gasifying chamber, and in the second gasifying chamber, carbon grains are further reacted with steam and CO2, the entraining flow is cooled and the molten slag is solidified. At the lower part of the second gasifying chamber, the entraining flow is returned upwards by the water cooling wall and out off the furnace to separate the molten slag, flyash from clude gas effectively.
Description
The present invention relates to a kind of New-type dry coal powder gas flow bed pressurizing gasifying furnace with unique texture.
Dry coal powder airflow bed pressurized gasification is the of new generation large-scale Coal Gasification Technology that grows up latter stage in 20th century, than other Coal Gasification Technology development and application prospect is arranged more.
At present, or near the typical case of the dry coal powder airflow bed gasification technology of the realizing industrial applications type of furnace that gasifies mainly contain in the world:
(1) K-T (Koppers-Totzek) vapourizing furnace: atmospheric gasification, the charging of dry coal powder, air-flow are up, slag tap, be vaporized chemical, water-cooled wall type vapourizing furnace with oxygen.
(2) Prenflo (Pressurized Entrained Flow Gasification) vapourizing furnace, Shell vapourizing furnace: these two kinds of gasifying process are that pressurized gasification, the charging of dry coal powder, air-flow are up, slag tap, be vaporized chemical, water-cooled wall type vapourizing furnace with oxygen.
(3) GSP (Gaskombiant Schwarze Pumpe) vapourizing furnace: single hop pressurized gasification, the charging of dry coal powder, air-flow are descending, slag tap, be vaporized chemical, water-cooled wall type vapourizing furnace with oxygen.
The K-T stove is to realize industrialized dry coal powder airflow bed gasifying process the earliest.Its process characteristic is that feed coal sprays into vapourizing furnace with dry powder form with vaporized chemical, and in the process that rises with air-flow in stove, at high temperature changes inflammable gas into through burning and gasification reaction in very short time.It is to gasify near under the condition of normal pressure, is mainly used in to produce syngas for synthetic ammonia and industrial fuel gas.Adopt K-T furnace gas metallization processes system ammonia (not contain China) in the world and once once accounting for 90% of coal synthesis ammonia ultimate production.Limited further developing of self yet the K-T vapourizing furnace is low owing to vapor pressure, gasification intensity is little.
Prenflo vapourizing furnace and Shell vapourizing furnace in fact all are the pressurized gasification forms of K-T vapourizing furnace, and its main technological features is to adopt sealing hopper method coal supply apparatus and dry coal powder concentrated phase to carry.Yet though the internal structure of these two kinds of vapourizing furnaces all adopts the water wall form, the two truly has very big difference on the structure formation of water wall itself.
It is that 48t/d, working pressure are the pilot plant of 3.0MPa that the dry coal powder airflow bed pressure gasification process of Prenflo once built up a cover feed coal treatment capacity, its separate unit vapourizing furnace feed coal treatment capacity that is used for the commercialization demonstration unit of integrated gasification combined cycle for power generation (being called for short IGCC) engineering is 2600t/d, is the present dry coal powder gas flow bed pressurizing gasifying furnace of the separate unit throughput maximum of operation in the world.The internal structure of Prenflo vapourizing furnace adopts the coil tube type water wall form of lateral arrangement, and apparatus processing, installation and maintenance are all relatively more difficult.
The pilot plant of the dry coal powder airflow bed pressure gasification process of Shell, feed coal treatment capacity are 250～400t/d coal, and vapor pressure is 2～4MPa.Having built up the feed coal treatment capacity on this basis is the commercialization demonstration unit of 2000t/d, is used for integrated gasification combined cycle for power generation (being called for short IGCC), and this device has now changed commercialized running over to.The internal structure of Shell vapourizing furnace adopts the membrane wall form of vertically arranging, apparatus processing technology more complicated.
The dry coal powder airflow bed pressure gasification process of GSP is a kind of following spray dry coal powder gas flow bed pressurizing gasifying furnace.Once the testing apparatus W100 vapourizing furnace of building, volume is 0.075m
3, working pressure is 3MPa, the feed coal processing power is 100～250kg/h.The designed capacity that W500 is put in cold trial assembly is 5～25t/h, working pressure 4MPa.The plant-scale gasification installation that builds up, feed coal treatment capacity are 30t/h, and gas yield is 40,000 m
3/ h, vapor pressure 3.0MPa.The internal structure of GSP vapourizing furnace and Prenflo vapourizing furnace are similar, also adopt the coil tube type water wall form of lateral arrangement, thereby also exist and Prenflo vapourizing furnace similar problem.
Compare with other Coal Gasification Technology, the common feature of above-mentioned several dry coal powder airflow bed gasifying process is: under high temperature, pressurized conditions, strengthen productions, raw material coal wide accommodation, single device gas yield greatly, efficiency of carbon conversion and gasification efficiency height, environmental characteristics be good.But they also exist to special substance and apparatus processing require too high, thereby apparatus processing, installation and maintenance difficult, equipment manufacturing cost and engineering construction investment are too high, and the reliability and the available rate of equipment operation are lower, are difficult to common problems such as large-scale popularization application at present.
And New-type dry coal powder gas flow bed pressurizing gasifying furnace involved in the present invention adopts single nozzle following spray structure.The vapourizing furnace main body is divided into two sections: epimere is first vaporizer, adopts the hot wall type structure, inner lining of furnace chromium corundum refractory brick.Backing is the heat-insulation and heat-preservation material; Hypomere is second vaporizer, built-in shell and tube water wall, furnace shell liner lagging material.Dry coal powder and vaporized chemical spray into first vaporizer through the combined nozzle autopneumatolysis furnace roof portion of particular design.Mainly carry out the high-temp combustion and the gasification reaction of dry coal powder in first vaporizer, the residence time of reaction mass in first vaporizer is 5～10s, and gasification temperature is 1400-1600 ℃, and pressure is 2.0-4.0MPa.The raw gas, slag and the unreacted carbon granule that go out first vaporizer enter second vaporizer downwards.Carbon granule continuation and steam and CO in second vaporizer
2Carry out gasification reaction, whole entrained flow is cooled off by water wall simultaneously, and gas flow temperature is reduced to below the grey melt temperature of feed coal, and slag is solidified.In the second vaporizer bottom, entrained flow from the regional baffling between the water wall outside and the vapourizing furnace pressure-bearing shell upwards goes out vapourizing furnace then, thereby slag is separated with raw gas with flying dust, the retention efficiency of vapourizing furnace can reach more than 95%, only has a small amount of thin ash to enter the back system.
The raw material of this vapourizing furnace not only can be the dry coal powder, but also can be the solid materials of other carbon containings, hydrogen; Vaporized chemical both can be used pure oxygen and steam, also can be with secondary oxygen, CO
2Wait other vaporized chemical.The gas of being produced can be used as chemical industry synthetic raw gas, combined cycle generation fuel gas, extracts unstripped gas and other various fuel gas of hydrogen.
The structural representation of the New-type dry coal powder gas flow bed pressurizing gasifying furnace that Fig. 1 relates to for this patent.
Claims (8)
1. New-type dry coal powder gas flow bed pressurizing gasifying furnace, internal structure was made up of upper and lower two sections (being called as first vaporizer and second vaporizer respectively).This top of gasification furnace has the import that feed coal and vaporized chemical nozzle are installed, and slag bath and slag notch are arranged at the bottom; Lower part of hypomere has the gas baffling plate, and there is the raw gas outlet side, hypomere middle part, and the hypomere top-side all has upcast and the downtake interface that is connected with drum with bottom sides.
2. the described vapourizing furnace of claim 1, wherein said top inlet is equipped with the custom-designed combined nozzle that sprays into feed coal and vaporized chemical.This structure of nozzle is many sleeve pipes pattern that dry coal powder and vaporized chemical circulate separately, and outermost layer is provided with the water coolant protective casing, and the material of nozzle head is a steel alloy heat-resisting, erosion resistant.
3. the described vapourizing furnace of claim 1, wherein said first vaporizer is the hot wall type structure, is made up of special refractory and lagging material.First vaporizer is a main reaction region, at this intensive burning and gasification reaction takes place, and temperature of reaction is 1400-1600 ℃, and pressure is 2.0-4.0MPa.
4. the described vapourizing furnace of claim 1, wherein said second vaporizer is the shell and tube water wall structure.And in gasification, utilize this water wall byproduct steam.Second vaporizer is the assisted reaction district, continues to take place chemical reaction at this; Simultaneously, along with the suitable reduction of temperature, the fused lime-ash can be cured as particles with different sizes.Outlet Gas Temperature is 900-1100 ℃.
5. the described vapourizing furnace of claim 1 is coal gas baffling district between lower part outside of wherein said second vaporizer and the vapourizing furnace pressure-bearing shell, the slag particles after this special construction can be realized solidifying and the high efficiency separation of flying dust and raw gas.
6. the described vapourizing furnace of claim 1, wherein said bottom slag bath and slag notch are used for collecting the lime-ash that gasification produces, and regularly the lime-ash of collecting are discharged outside the vapourizing furnace.
7. the described vapourizing furnace of claim 1 both can be an one-piece construction, also can be the split unitized construction of first vaporizer and second vaporizer.
8. the main ingredient content of the described vapourizing furnace process gas of claim 1 is respectively: CO35%-55%, H
230%-45%, CO
25%-12%, N
25%-8% and a spot of CH
4, O
2, H
2S+COS etc.This gas can be used as chemical industry synthetic raw gas, combined cycle generation fuel gas, extracts unstripped gas and other various fuel gas of hydrogen.
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| CN 01134311 CN1417302A (en) | 2001-10-29 | 2001-10-29 | New-type dry coal powder gas flow bed pressurizing gasifying furnace |
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| CN 01134311 CN1417302A (en) | 2001-10-29 | 2001-10-29 | New-type dry coal powder gas flow bed pressurizing gasifying furnace |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298816C (en) * | 2005-03-08 | 2007-02-07 | 北京航天动力研究所 | Environmental-protection combustible powder clean gasifying apparatus |
| CN101003755B (en) * | 2006-01-19 | 2010-09-29 | 神华集团有限责任公司 | Gasification stove with multi nozzle, and gasification method |
| WO2011075878A1 (en) * | 2009-12-25 | 2011-06-30 | 北京航天万源煤化工工程技术有限公司 | Highly efficient and clean gasification apparatus for carbonaceous dry powder and method thereof |
| CN101392191B (en) * | 2008-10-15 | 2011-11-23 | 合肥工业大学 | Two stage type dry coal powder entrained flow gasifier |
| CN102329658A (en) * | 2011-08-23 | 2012-01-25 | 华东理工大学 | Cold-wall type lining for entrained flow bed gasification furnace and device comprising same |
| CN101475840B (en) * | 2009-01-19 | 2012-09-05 | 张金辉 | Gas generating furnace with hot wall |
| CN102762693A (en) * | 2009-12-29 | 2012-10-31 | 浦项产业科学研究院 | Method for increasing amount of coke oven gas by using carbon dioxide |
| CN101724468B (en) * | 2009-12-29 | 2012-11-07 | 江苏大学 | Device and method for preparing gas by spouting, catalyzing and gasifying straw and coal together in resistance-reducing starting spouted bed |
| CN101705113B (en) * | 2009-10-30 | 2012-12-19 | 清华大学 | Entrained flow gasifier water-cooling circulating system with ejector |
| CN101570699B (en) * | 2008-12-29 | 2013-02-13 | 航天长征化学工程股份有限公司 | Gasification device for solid fuel and method for producing synthetic gas |
| CN103069217A (en) * | 2010-11-29 | 2013-04-24 | 三菱重工业株式会社 | Ignition torch and pressurized gasifier provided with same |
| CN103173247A (en) * | 2013-04-12 | 2013-06-26 | 邰学林 | Compound type furnace body of slag coal gasification furnace |
| CN103937555A (en) * | 2014-04-30 | 2014-07-23 | 华东理工大学 | Single-nozzle water-coal-slurry entrained-flow bed gasifier and gasification method of same |
| CN103998580A (en) * | 2011-12-14 | 2014-08-20 | 北卡德米弗莱贝格工业大学 | Method and device for the entrained flow gasification of solid fuels under pressure |
| CN104174346A (en) * | 2013-05-27 | 2014-12-03 | 任相坤 | Forming technology and forming device for liquid residues |
| CN104232167A (en) * | 2014-09-22 | 2014-12-24 | 清华大学 | Coal gasification circulating water system |
-
2001
- 2001-10-29 CN CN 01134311 patent/CN1417302A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1298816C (en) * | 2005-03-08 | 2007-02-07 | 北京航天动力研究所 | Environmental-protection combustible powder clean gasifying apparatus |
| CN101003755B (en) * | 2006-01-19 | 2010-09-29 | 神华集团有限责任公司 | Gasification stove with multi nozzle, and gasification method |
| CN101392191B (en) * | 2008-10-15 | 2011-11-23 | 合肥工业大学 | Two stage type dry coal powder entrained flow gasifier |
| CN101570699B (en) * | 2008-12-29 | 2013-02-13 | 航天长征化学工程股份有限公司 | Gasification device for solid fuel and method for producing synthetic gas |
| CN101475840B (en) * | 2009-01-19 | 2012-09-05 | 张金辉 | Gas generating furnace with hot wall |
| CN101705113B (en) * | 2009-10-30 | 2012-12-19 | 清华大学 | Entrained flow gasifier water-cooling circulating system with ejector |
| US8801813B2 (en) | 2009-12-25 | 2014-08-12 | Changzheng Engineering Co., Ltd. | Highly efficient, clean and pressurized gasification apparatus for dry powder of carbonaceous material and method thereof |
| CN102203222A (en) * | 2009-12-25 | 2011-09-28 | 北京航天万源煤化工工程技术有限公司 | Highly efficient and clean gasification apparatus for carbonaceous dry powder and method thereof |
| CN102203222B (en) * | 2009-12-25 | 2013-03-20 | 航天长征化学工程股份有限公司 | Highly efficient and clean gasification apparatus for carbonaceous dry powder and method thereof |
| WO2011075878A1 (en) * | 2009-12-25 | 2011-06-30 | 北京航天万源煤化工工程技术有限公司 | Highly efficient and clean gasification apparatus for carbonaceous dry powder and method thereof |
| US9255224B2 (en) | 2009-12-29 | 2016-02-09 | Research Institute Of Industrial Science & Technology | Method for increasing amount of coke oven gas by using carbon dioxide |
| CN102762693A (en) * | 2009-12-29 | 2012-10-31 | 浦项产业科学研究院 | Method for increasing amount of coke oven gas by using carbon dioxide |
| CN101724468B (en) * | 2009-12-29 | 2012-11-07 | 江苏大学 | Device and method for preparing gas by spouting, catalyzing and gasifying straw and coal together in resistance-reducing starting spouted bed |
| CN102762693B (en) * | 2009-12-29 | 2014-12-31 | 浦项产业科学研究院 | Method for increasing amount of coke oven gas by using carbon dioxide |
| CN103069217A (en) * | 2010-11-29 | 2013-04-24 | 三菱重工业株式会社 | Ignition torch and pressurized gasifier provided with same |
| CN103069217B (en) * | 2010-11-29 | 2015-11-25 | 三菱日立电力系统株式会社 | Ignition tip and possess the compression type gasification furnace of this ignition tip |
| CN102329658A (en) * | 2011-08-23 | 2012-01-25 | 华东理工大学 | Cold-wall type lining for entrained flow bed gasification furnace and device comprising same |
| CN103998580A (en) * | 2011-12-14 | 2014-08-20 | 北卡德米弗莱贝格工业大学 | Method and device for the entrained flow gasification of solid fuels under pressure |
| CN103173247A (en) * | 2013-04-12 | 2013-06-26 | 邰学林 | Compound type furnace body of slag coal gasification furnace |
| CN104174346A (en) * | 2013-05-27 | 2014-12-03 | 任相坤 | Forming technology and forming device for liquid residues |
| CN104174346B (en) * | 2013-05-27 | 2016-01-20 | 任相坤 | A kind of moulding process of residue liquid and shaped device |
| CN103937555A (en) * | 2014-04-30 | 2014-07-23 | 华东理工大学 | Single-nozzle water-coal-slurry entrained-flow bed gasifier and gasification method of same |
| CN103937555B (en) * | 2014-04-30 | 2015-09-23 | 华东理工大学 | Single nozzle coal water slurry entrained flow bed gasification stove and gasification process thereof |
| CN104232167A (en) * | 2014-09-22 | 2014-12-24 | 清华大学 | Coal gasification circulating water system |
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