CN2876096Y - Gas distributor for fluidized bed gasification furnace - Google Patents
Gas distributor for fluidized bed gasification furnace Download PDFInfo
- Publication number
- CN2876096Y CN2876096Y CN 200520079695 CN200520079695U CN2876096Y CN 2876096 Y CN2876096 Y CN 2876096Y CN 200520079695 CN200520079695 CN 200520079695 CN 200520079695 U CN200520079695 U CN 200520079695U CN 2876096 Y CN2876096 Y CN 2876096Y
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- CN
- China
- Prior art keywords
- gas
- wear
- distributor
- distributing plate
- gasification furnace
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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]
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses a gas distributor for circulating fluidized bed gasification furnace, and the gas distributor includes a shell and a distributing plate arranged inside the shell. A gas chamber connected with the gas source is formed between the shell and the distributing plate, a central pipe is equipped under the distributing plate and is connected with the gas source, the clearance between the central pipe and the distributing plate forms an annular pipe, an insulation layer and a wear-resistant casting layer are also arranged in turn on surface of the distributing plate, via holes are arranged on the distributing plate, the insulation layer and the wear-resistant casting layer separately, and the holes are all connected with the gas chamber correspondingly. In comparison with traditional multi-hole distributing plates, the utility model has a wear-resistant casting layer and an insulation layer, and is arranged with a gas pipe, a central pipe and an annular pipe. The three streams of gas form a composite flow field to ensure adequate fluidization of the coal on the bed. The utility model overcomes shortcomings of normal gas distributors, i. e. low working temperature, weak wear resistance, low strength, not easy material selection, easy flexural deformation and high cost, and greatly improves carbon conversion rate.
Description
Technical field
The utility model relates to a kind of gas distributor, particularly a kind of fluidized-bed gasification furnace gas distributor.
Background technology
The coal gasification technology is divided into fixed bed (Lurgi stove), fluidized-bed (HTW stove, Circulation fluidized-bed furnace CAGG stove, U-gas stove etc.), air flow bed (K-T stove, TEXACO stove, SCGP etc.) and melting bed.Fixed-bed gasification furnace generally is raw material with lump coal, and the screening scope is 6～50mm, and coal and vaporized chemical carry out countercurrent flow in stove, the solid phase raw material is added by vapourizing furnace top, vaporized chemical autopneumatolysis furnace bottom blasts, and the lime-ash that contains carbon residue is discharged from furnace bottom, contains hydro carbons and tar etc. in the coal gas of generation; The raw coal size of fluidized-bed is generally about 1～6mm, keeping under the effect of the vaporized chemical of feed coal successively and out of orderly seething with excitement and the suspended state motion from bottom to top, mix rapidly and heat exchange, whole bed temperature homogeneous, the coal gas and the lime-ash that produce are being derived near under the furnace temperature, thereby do not contain tar class material substantially in the coal gas; In the airflow bed gasification furnace, raw material fine coal (more than 70% with by 200 orders) is conveyed in the stove with vaporized chemical, with and stream mode in thermal-flame, react, temperature is very high in the stove, does not contain materials such as tar in the coal gas.Airflow bed gasification furnace also can be made fine coal coal water slurry charging (as the TEXACO stove), but because moisture evaporation, so oxygen-consumption is higher.
For the fluidized bed coal gasifying process, gas distributor is a key part of fluidized bed coal gasifier, and it mainly acts on is to cause fluidisation, keep the interior material movement continuously of bed and make the gas uniform distribution.The structure formation of gas distributor is a lot, and the type of using on fluidized-bed gasification furnace has porous template grid distributor, blast cap type grid distributor and tight zone grid distributor.
The multi-hole type distributing plate structure is simple, is easy to processing, and has good gas distribution.The uneven distribution of aperture is improved the fluidization quality of bed on shape that can be by grid distributor and the grid distributor.
Blast cap type grid distributor uses comparatively just general on China's boiling boiler.The gas distribution of this class grid distributor is not better than multi-hole type.Gas aperture ejection from the side forms gas-bearing formation in the bed bottom, so that the gas uniform distribution.
The tight zone grid distributor is included in grid distributor and the ceramic post sintering plate that is filled with granule materials between two-layer orifice plate.This class grid distributor has uniform gas distribution, is a kind of good gas distributor.But, on full scale plant, seldom use because intensity is low, resistance is big.
(application number: 91216035.7) disclose a kind of fluidized bed gas sparger, it is to be connected on the plate by one group of pipe of having opened side opening or latasuture to combine with an isobaric air compartment " fluidized bed gas sparger ".Its weak point is, this kind fluidized-bed sparger is only applicable to common fluidized-bed, and do not consider service temperature and wear factor, if sparger environment for use temperature is higher, the medium serious wear, will cause manufacturing cost can't satisfy industrial application requirements to the requirement that the material of this kind fluidized-bed sparger is selected and the structure design proposition is very harsh.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of long service life, heat resistance is good, gasification efficiency is high fluidized-bed gasification furnace gas distributor are provided.
For achieving the above object, the technical solution adopted in the utility model is: comprise the sparger housing and be arranged on the intravital grid distributor of shell, be characterized in, formed the air chamber that is connected with source of the gas between housing and the grid distributor, be provided with the pipe core that is connected with source of the gas in the lower end of grid distributor, the gap of pipe core and grid distributor has formed endless tube, also be disposed with thermofin and wear-resistant pouring layer on the surface of grid distributor, and on grid distributor, thermofin and wear-resistant pouring layer, offer the corresponding through hole that is connected with air chamber respectively.
Another characteristics of the present utility model are: the wear-resistant pouring layer is the beautiful pouring layer of chromium steel, and its thickness is 50～120mm; Thermofin is a polycrystalline fibre plate thermofin, and its thickness is 20～100mm; Grid distributor is a funnel-shaped structure; The quantity of through hole is 500～5000.
The utility model designs on traditional multi-hole type grid distributor one deck wear-resistant pouring layer and one deck thermofin, and design has air chamber, pipe core and endless tube, forming the flow field mutually by three bursts of air inlets cooperates, guarantee the abundant fluidisation of coal in the bed, overcome that common gases sparger use temperature is lower, wear resistance is relatively poor, insufficient strength, material are difficult for selecting, easily deflection deformation and the high problem of cost, and have improved the transformation efficiency of carbon greatly.
Description of drawings
Accompanying drawing is an one-piece construction synoptic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and principle of work are described in further detail.
Referring to accompanying drawing, the grid distributor 3 that the utility model comprises sparger housing 9 and is arranged on the funnel-shaped structure in the housing 9, formed air chamber 4 between housing 9 and the grid distributor 3, air chamber 4 is connected with source of the gas by the air inlet of air chamber 6 that is opened on the housing 9, be provided with the pipe core 7 that is connected with source of the gas in the lower end of grid distributor 3, pipe core 7 has formed endless tube 8 with the gap of grid distributor 3, and also be disposed with thickness on the surface of grid distributor 3 and be the thermofin of making by the polycrystalline fibre plate 2 of 20～100mm and thickness and be the wear-resistant pouring layer of making by the chromium steel jade 1 of 50～120mm, grid distributor 3, offer 500～5000 the corresponding through holes 5 that are connected with air chamber 4 on thermofin 2 and the wear-resistant pouring layer 1 respectively.
The gas distributor that has wear-resisting heat insulating casting material of the present utility model is to utilize the fluidization principle, and vaporized chemical (pure oxygen, carbonic acid gas and the steam) Fen Sanlu that mixes is entered gas distributor, makes the coal grain boiling fluidisation in the vapourizing furnace.Under the hot conditions that burning produces, the pyrolysis of coal, the redox reaction of breaking sticking and carbon take place in the contact of gas-solid two-phase thorough mixing, finally realize being gasified totally of coal.
Vaporized chemical after metering (oxygen, carbonic acid gas, steam) is entered the bottom of vapourizing furnace respectively by air chamber 4, pipe core 7 and endless tube 8.Vaporized chemical in the air chamber 4 enters vapourizing furnace at a high speed by the through hole on the grid distributor 35, have equally on wear-resistant pouring layer 1 and the thermofin 2 with grid distributor 3 on corresponding through hole 5, three strands of vaporized chemicals that entered vapourizing furnace by air chamber 4, pipe core 7 and endless tube 8 respectively form the flow field cooperation in the bottom of vapourizing furnace, make the abundant fluidisation of the fine coal that enters vapourizing furnace, and then issue broken sticking, the devolatilization of soft coal, the cracking of tar, the redox reaction and the cindery selective separation of coal tar at high temperature fluidized state more than 1000 ℃.
Owing to have wear-resistant pouring layer 1 and thermofin 2 on the grid distributor 3; therefore; can avoid the traditional high temperature of Metal Distribution plate 3 direct contacts more than 1000 ℃; reduce the thermal expansion metamorphism takes place; simultaneously; wear-resistant pouring layer 1 can protect metal grid distributor 3 to avoid the wearing and tearing of material in the vapourizing furnace, prolongs the work-ing life of gasification distribution apparatus.In addition, under the protection of wear-resistant pouring layer 1 and thermofin 2, the use temperature of Metal Distribution plate 3 reduces greatly, can reduce the selection grade of Metal Distribution plate 3, thereby reduces the manufacturing cost of gas distributor.
The use of the utility model wear-resistant pouring layer makes gas distributor, and wear-resistant to undermine strength property better, the work-ing life of having improved gas distributor greatly; The use of lagging material makes the heat resistance of gas distributor better, can under higher temperature, use, expanded the use range of technological temperature condition, reduce the service rating of gas distribution modulator material, greatly reduce the manufacturing cost of gas distributor, use on a large scale industrial thereby be convenient to gas distributor.
Claims (5)
1, a kind of fluidized-bed gasification furnace gas distributor, comprise sparger housing [9] and be arranged on the interior grid distributor [3] of housing [9], it is characterized in that: formed the air chamber [4] that is connected with source of the gas between housing [9] and the grid distributor [3], be provided with the pipe core [7] that is connected with source of the gas in the lower end of grid distributor [3], pipe core [7] has formed endless tube [8] with the gap of grid distributor [3], also be disposed with thermofin [2] and wear-resistant pouring layer [1] on the surface of grid distributor [3], and in grid distributor [3], offer the corresponding through hole [5] that is connected with air chamber [4] on thermofin [2] and the wear-resistant pouring layer [1] respectively.
2, fluidized-bed gasification furnace gas distributor according to claim 1 is characterized in that: said wear-resistant pouring layer [1] is the beautiful pouring layer of chromium steel, and its thickness is 50～120mm.
3, fluidized-bed gasification furnace gas distributor according to claim 1 is characterized in that: said thermofin [2] is a polycrystalline fibre plate thermofin, and its thickness is 20～100mm.
4, fluidized-bed gasification furnace gas distributor according to claim 1 is characterized in that: said grid distributor [3] is a funnel-shaped structure.
5, fluidized-bed gasification furnace gas distributor according to claim 1 is characterized in that: the quantity of said through hole [5] is 500～5000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079695 CN2876096Y (en) | 2005-11-14 | 2005-11-14 | Gas distributor for fluidized bed gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079695 CN2876096Y (en) | 2005-11-14 | 2005-11-14 | Gas distributor for fluidized bed gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876096Y true CN2876096Y (en) | 2007-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520079695 Expired - Fee Related CN2876096Y (en) | 2005-11-14 | 2005-11-14 | Gas distributor for fluidized bed gasification furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2876096Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519606B (en) * | 2009-04-03 | 2012-04-04 | 中国科学院山西煤炭化学研究所 | Gas distribution device |
| CN102827644A (en) * | 2012-09-18 | 2012-12-19 | 山东天力干燥股份有限公司 | Gas distributor for ash agglomerating fluidized-bed gasification furnace |
| CN103031156A (en) * | 2012-12-13 | 2013-04-10 | 新奥科技发展有限公司 | Dry-process slag discharge device and method for entrained flow bed |
| CN104277882A (en) * | 2014-10-15 | 2015-01-14 | 中国科学院山西煤炭化学研究所 | Gas distributor for fluidized bed gasification furnace |
| CN104909171A (en) * | 2015-06-08 | 2015-09-16 | 中美新能源技术研发（山西）有限公司 | Heat-insulating high-temperature-resistant inflatable cone |
| CN110055109A (en) * | 2018-04-08 | 2019-07-26 | 新能能源有限公司 | Fluidized-bed gasification furnace gasifying agent conveyance control method and system |
-
2005
- 2005-11-14 CN CN 200520079695 patent/CN2876096Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519606B (en) * | 2009-04-03 | 2012-04-04 | 中国科学院山西煤炭化学研究所 | Gas distribution device |
| CN102827644A (en) * | 2012-09-18 | 2012-12-19 | 山东天力干燥股份有限公司 | Gas distributor for ash agglomerating fluidized-bed gasification furnace |
| CN103031156A (en) * | 2012-12-13 | 2013-04-10 | 新奥科技发展有限公司 | Dry-process slag discharge device and method for entrained flow bed |
| CN103031156B (en) * | 2012-12-13 | 2014-11-05 | 新奥科技发展有限公司 | Dry-process slag discharge device and method for entrained flow bed |
| CN104277882A (en) * | 2014-10-15 | 2015-01-14 | 中国科学院山西煤炭化学研究所 | Gas distributor for fluidized bed gasification furnace |
| CN104909171A (en) * | 2015-06-08 | 2015-09-16 | 中美新能源技术研发（山西）有限公司 | Heat-insulating high-temperature-resistant inflatable cone |
| CN110055109A (en) * | 2018-04-08 | 2019-07-26 | 新能能源有限公司 | Fluidized-bed gasification furnace gasifying agent conveyance control method and system |
| CN110055109B (en) * | 2018-04-08 | 2024-05-03 | 新能能源有限公司 | Gasifying agent conveying control method and system for fluidized bed gasifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANXI HUAXIANG ENERGY TECHNOLOGY GROUP CO., LTD. Free format text: FORMER OWNER: MAO SHAOXIANG Effective date: 20100429 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710075 ROOM 205, TOWER A, ZHENGXIN BUILDING, GAOXIN 1ST ROAD, HIGH-TECH ZONE, XI AN CITY, SHAANXI PROVINCE TO: 710075 BUILDING 3, QINTANG BUILDING 12, SCIENCE AND TECHNOLOGY 4TH ROAD, HIGH-TECH INDUSTRY DEVELOPMENT ZONE, XI AN CITY, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100429 Address after: 710075, building 3, 12 Qin Tang four road, hi tech Industrial Development Zone, Xi'an, Shaanxi Patentee after: Shaanxi Huaxiang Energy Technology Group Co., Ltd. Address before: 710075 Shaanxi city of Xi'an province hi tech road Jungshin building block A room 205 Patentee before: Mao Shaoxiang |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070307 Termination date: 20131114 |