CN101497015A - Cone gas distributor for fluidized bed - Google Patents
Cone gas distributor for fluidized bed Download PDFInfo
- Publication number
- CN101497015A CN101497015A CNA2009100283461A CN200910028346A CN101497015A CN 101497015 A CN101497015 A CN 101497015A CN A2009100283461 A CNA2009100283461 A CN A2009100283461A CN 200910028346 A CN200910028346 A CN 200910028346A CN 101497015 A CN101497015 A CN 101497015A
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- China
- Prior art keywords
- cone
- gas
- fluidized bed
- gas distributor
- gas distributing
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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 invention relates to a gas distributing device for a fluidized bed, which is arranged in a gas gathering chamber 4. The gas distributing device comprises an upper cone, a lower cone and a bracket, wherein the bracket is inversely provided with the lower cone; the lower cone is provided with the upper cone; the bottom surface of the upper cone is opposite to that of the lower cone; and the upper cone and the lower cone have the same bottom diameter, and the bottom diameter is less than the inner diameter of the gas gathering chamber. The bottom angle a of the upper cone is between 30 and 55 DEG; the bottom angle of the lower cone is between 28 and 48 DEG; and the bottom radius of the upper cone and the lower cone is 2 to 20 mm less than the inner diameter of the gas gathering chamber. The cone gas distributing device has good gas distributing effect and effectively improves the gas distributing evenness; the cone surface has the advantages of smoothness, no gas channel, small pressure drop, abrasion resistance and difficult deformation at a high temperature; an annular gap can effectively prevent impurities carried by a raw material from blocking the gas distributing device so as to conveniently carry out replacement or maintenance.
Description
Technical field:
The present invention relates to a kind of fluidized bed reaction, relate in particular to a kind of fluid bed gas distributor that is applicable to gas-solid reaction.
Background technology:
Along with becoming increasingly conspicuous of energy and environment problem, biomass energy technology was developed rapidly in recent years, it is used more and more widely, biomass gasification technology is one of important means of biomass utilization, the fluidized-bed gasification furnace that it adopted is a kind of traditional industry device, but because employed fuel (raw material) difference requires also different to concrete equipment inner member.The gas distributor of tradition fluidized-bed gasification furnace adopts gas distribution grid usually, mainly contain sieve plate, hemispherical sieve plate, cone screen plate and similar sieve-plate structure form now, usually because accompany impurity etc. in the living beings fine grained raw material, its pore in service is easy to blocked, the device cycle of operation shortens, and overhauls and safeguards shortcoming such as inconvenience, and cause fluidization quality to have than big-difference thus, cause the fluidized reaction instability, even cause fluid bed to move; The pressure drop of all kinds of sieve plate type gas distributors simultaneously is big, and energy consumption is than higher.
Summary of the invention:
Problems such as the present invention is big for the pressure drop of the sieve plate gas distributor that solves prior art and exist, impurity easily stops up, inconvenience maintenance and maintenance the present invention proposes a kind of cone gas distributor for fluidized bed, can effectively reduce pressure drop, cut down the consumption of energy; Effectively avoid the impurity blockage problem of traditional porous plate gas distributor.
Technical scheme of the present invention is: a kind of cone gas distributor for fluidized bed, be located in the collection chamber 4, comprise being inverted on cone, following cone, support, the support and be provided with down cone, be provided with cone on the cone down, last cone is relative with the bottom surface of following cone, last cone has identical bottom surface diameter with following cone, and the bottom surface diameter is less than the internal diameter of collection chamber.The described base angle a that goes up cone is 30～55 °; The base angle of following cone is 28 °～48 °; The bottom surface radius of last cone and following cone is less than the internal diameter 2mm～20mm of collection chamber.Last cone is fixed by locating pin with following cone.Evenly to distribute around the gap that guarantees cone and collection chamber inwall.
Compared with prior art, the present invention has following advantage:
(1) the designed tapered gas distributor of the present invention can have the cone up and down of different angles according to requirements such as different fluid bed scales, fluidized reaction design, improve the distribution of gas uniformity coefficient in the fluidized-bed reactor, make gas-solid reaction more favourable, reach better heat transfer, mass transfer effect, improve the operating condition of fluid bed, make the fluid effect of fluid bed better, can fully satisfy the distribution of gas requirement of biomass fluidized bed gasification furnace.
(2) the designed tapered gas distributor of the present invention, owing to adopted cone gas distributor is located at movable structure on the support, avoided the inconvenience of the fixed form installation and maintenance of traditional sieve plate distribution grid, just can carry out the maintenance of dismounting easily distributor from the collection chamber bottom.
(3) the designed tapered gas distributor of the present invention, owing to adopt the form distributing gas of annular gap structure, board-like (sieve plate, porous plate) its pore-size of distributor is much bigger with respect to distributing, therefore in the running of biomass fluidized bed gasification furnace, can effectively avoid because the obstruction that impurity that biomass material is carried secretly causes, help to improve the gasification conversion ratio of living beings, make the applicability of biomass fluidized bed gasification furnace more extensive, make the continous-stable operation of biomass fluidized bed gasification furnace that reliable guarantee has more been arranged simultaneously.
(4) the designed tapered gas distributor of the present invention, last cone is fixed by locating pin with following cone, evenly to distribute around the gap that guarantees cone and collection chamber inwall, the cone gas distributor distribution of gas is effective, effectively improves the distribution of gas uniformity coefficient; The smooth no gas passage of the conical surface, pressure drop is little, and is wear-resistant, not yielding under the high temperature; Therefore, not only improve the space availability ratio and the gas-solid reaction efficiency of reactor, also improved the life cycle of gas distributor greatly, annular gap can effectively prevent the obstruction that the impurity of carrying secretly causes distributor in the raw material, can change easily or safeguard.
(5) cone gas distributor for fluidized bed, the board-like gas distributor of conventional screen complete different from the past of this version, the designer can change stream condition by the angle that changes upper cone, lower cone easily; Or the annular space size of change cone and collection chamber, adjust air velocity; Change fluid effect in the reactor with this, make it to finish better the fluidized reaction process, can fully satisfy the distribution of gas requirement of biomass fluidized bed gasification furnace, reduce pressure drop, cut down the consumption of energy; Simultaneously because the existence of cone cone angle, make mechanical admixture under the effect of gravity, can be slipped to annular space along the cone surface, enter the collection chamber bottom, can not form obstruction to pore, thereby can not influence fluidized state, therefore, effectively avoid the impurity blockage problem of traditional porous plate gas distributor.
Description of drawings:
Fig. 1 structural representation of the present invention.
1 is last cone shown in the figure, and 2 are following cone, and 3 is the distributor support, and 4 is collection chamber, and 5 is locating pin.
The specific embodiment:
A kind of cone gas distributor for fluidized bed, be located in the collection chamber 4, comprise cone 1, following cone 2, support 3, be inverted on the support 3 and be provided with down cone 2, be provided with cone 1 on the cone 2 down, last cone 1 is relative with the bottom surface of following cone 2, last cone 1 has identical bottom surface diameter with following cone 2, and the bottom surface diameter is less than the internal diameter of collection chamber 4, go up the bottom surface of cone 1 and following cone 2 like this and just locate and form between the inwall of collection chamber 4 a uniform circular space, annular spaces is between 2mm～20mm, that is to say the internal diameter 4mm～40mm of the bottom surface diameter of cone 1 less than collection chamber 4.Owing to adopt the form distributing gas of annular gap structure, its pore-size of board-like (porous plate) distributor is much bigger with respect to distributing, therefore in the running of biomass fluidized bed gasification furnace, can effectively avoid because the obstruction that impurity that biomass material is carried secretly causes, help to improve the gasification conversion ratio of living beings, make the applicability of biomass fluidized bed gasification furnace more extensive, make the continous-stable operation of biomass fluidized bed gasification furnace that reliable guarantee has more been arranged simultaneously.The described base angle a that goes up cone 1 is 30～55 °, and the base angle b of following cone 2 is 28 °～48 °; Last cone 1 is fixing by locating pin 5 with following cone 2.The annular gap d of cone and collection chamber 4 inwalls formation also makes operating personnel can carry out the dismounting maintenance easily from the collection chamber bottom up and down.
Claims (5)
1, a kind of cone gas distributor for fluidized bed, be located in the collection chamber (4), it is characterized in that comprising that cone (1), time cone (2), support (3), the last inversion of support (3) are provided with down cone (2), be provided with cone (1) on the cone (2) down, last cone (1) is relative with the bottom surface of following cone (2), last cone (1) has identical bottom surface diameter with following cone (2), and the bottom surface diameter is less than the internal diameter of collection chamber (4).
2, cone gas distributor for fluidized bed according to claim 1 is characterized in that: the described base angle a that goes up cone (1) is 30～55 °;
3, cone gas distributor for fluidized bed according to claim 1 is characterized in that: the base angle of following cone (2) is 28 °～48 °;
4, cone gas distributor for fluidized bed according to claim 1 is characterized in that: go up the internal diameter 2mm～20mm of the bottom surface radius of cone (1) and following cone (2) less than collection chamber (4).
5, cone gas distributor for fluidized bed according to claim 1 is characterized in that: it is fixing by locating pin (5) with following cone (2) to go up cone (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100283461A CN101497015A (en) | 2009-01-14 | 2009-01-14 | Cone gas distributor for fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100283461A CN101497015A (en) | 2009-01-14 | 2009-01-14 | Cone gas distributor for fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101497015A true CN101497015A (en) | 2009-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100283461A Pending CN101497015A (en) | 2009-01-14 | 2009-01-14 | Cone gas distributor for fluidized bed |
Country Status (1)
| Country | Link |
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| CN (1) | CN101497015A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102872771A (en) * | 2012-10-23 | 2013-01-16 | 河北工业大学 | Gas-solid distributor capable of reducing back-mixing at outlet of riser of series combination fluidized bed |
| CN102872764A (en) * | 2012-10-23 | 2013-01-16 | 河北工业大学 | Gas-solid distributor for reducing outlet returned mixing of lifting pipe of coupling reactor |
| CN103752232A (en) * | 2014-02-24 | 2014-04-30 | 重庆大学 | Viscous fine mineral powder fluidization reactor |
| CN111139107A (en) * | 2020-01-09 | 2020-05-12 | 万华化学集团股份有限公司 | Regeneration method of molecular sieve of synthesis gas cooling box and gas distributor |
-
2009
- 2009-01-14 CN CNA2009100283461A patent/CN101497015A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102872771A (en) * | 2012-10-23 | 2013-01-16 | 河北工业大学 | Gas-solid distributor capable of reducing back-mixing at outlet of riser of series combination fluidized bed |
| CN102872764A (en) * | 2012-10-23 | 2013-01-16 | 河北工业大学 | Gas-solid distributor for reducing outlet returned mixing of lifting pipe of coupling reactor |
| CN102872764B (en) * | 2012-10-23 | 2014-10-08 | 河北工业大学 | Gas-solid distributor for reducing outlet returned mixing of lifting pipe of coupling reactor |
| CN103752232A (en) * | 2014-02-24 | 2014-04-30 | 重庆大学 | Viscous fine mineral powder fluidization reactor |
| CN103752232B (en) * | 2014-02-24 | 2015-12-30 | 重庆大学 | Viscosity mineral fine fluidizing reactor |
| CN111139107A (en) * | 2020-01-09 | 2020-05-12 | 万华化学集团股份有限公司 | Regeneration method of molecular sieve of synthesis gas cooling box and gas distributor |
| CN111139107B (en) * | 2020-01-09 | 2020-11-24 | 万华化学集团股份有限公司 | Regeneration method of molecular sieve of synthesis gas cooling box and gas distributor |
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Open date: 20090805 |