CN202983652U - Gas distribution device of fluidized bed reactor - Google Patents
Gas distribution device of fluidized bed reactor Download PDFInfo
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- CN202983652U CN202983652U CN 201220578235 CN201220578235U CN202983652U CN 202983652 U CN202983652 U CN 202983652U CN 201220578235 CN201220578235 CN 201220578235 CN 201220578235 U CN201220578235 U CN 201220578235U CN 202983652 U CN202983652 U CN 202983652U
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- distribution grid
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- circular cone
- cylindrical shell
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Abstract
A gas distribution device of a fluidized bed reactor is formed by a shell body, a gas distribution plate, an air inlet, a flange and a jet flow ash discharge pipe. A cylindrical distribution plate (1) is arranged in a cylindrical shell body (3), an air chamber is formed between the cylindrical shell body (3) and the cylindrical distribution plate (1), the lower end of the cylindrical distribution plate (1) is connected with a cone distribution plate (8) and a straight cylindrical shell body (13), the cylindrical distribution plate (1) is provided with a cylindrical air inlet (2), the cone distribution plate (8) is arranged inside the straight cylindrical shell body (13), the cone distribution plate (8) is provided with cone air inlets (9), a cylindrical air chamber (4) is connected outside the lower portion of the cylindrical shell body (3) and above the cone distribution plate (8), an air inlet (5) is formed in the wall of the cylindrical shell body (3) inside the cylindrical air chamber (4), a cylindrical air chamber air inlet (6) and a cylindrical air chamber air inlet (7) arranged in a symmetrical mode are formed in the cylindrical air chamber (4), a cone air inlet (10) is formed in the lower portion of the straight cylindrical shell body (13), the bottom portion of the straight cylindrical shell body (13) is connected with a flange (11), and the bottom portion of the cone distribution plate (8) is connected with the jet flow ash discharge pipe (12). The gas distribution device of the fluidized bed reactor has the advantages of being high in gasification efficiency, and good in safety and stability.
Description
Technical field
The utility model belongs to a kind of gas distribution grid, relates in particular to a kind of distribution device in gas-fluid of fluidized-bed reactor.
Background technology
In today that global economy develops rapidly, contradiction between oil supply and demand becomes increasingly conspicuous, and China's oil import interdependency is more and more higher, and serious threat to Chinese energy safety and economic construction, is sought new alternative energy source imperative.In addition, coal in China accounts for 70% left and right in primary energy, and the development of Chinese national economy is played an important role.And coal will be for a long time as the main force of China's energy, so efficient, the clean utilization of coal have important strategic importance to China.Coal gasification is one of efficient main direction of utilizing of Coal Clean.The coal conversion of cheapness can be become cleaning coal gas (synthesis gas and methane) by coal gasification, both can be used for the production chemical product, also can be used for coal directly and indirect liquefaction, combined cycle generation (IGCC) and turn to the fields such as Poly-generation on basis with coal gas is the tap of correlation technique development.Fluidized bed coal gasification is one of industrialized gasifying process the earliest, and fluidized gasification is to keep continuously boiling and suspended state to move under the effect of the gasifying agent of feed coal from bottom to top, mixes rapidly the gasification technology with heat exchange.
Gas distribution grid plays the important function of even gas distribution and support solid phase particles as the main member in fluid unit, and its plate face shape and physical dimension greatly affect the production operation performances such as heat and mass transfer of equipment.Specifically, the distribuor of fluidized bed role comprises: the stream with uniform distribution body, guarantee near distribution grid to form good gas-solid contact condition, and all particles all are kept in motion, thus deadband eliminating.
The applied gas distribution grid of plant-scale fluid bed is mainly flat and the tapered gas distribution grid.The airflow direction of flat distribution grid easily makes bed cause channel over against bed.And the single flow distribution grid is in operating process, and aperture is easily stopped up by material, leakiness material again during parking.The tapered gas distribution grid has been eliminated the shortcoming of dull and stereotyped distribution grid to a certain extent, but the conical distribution plate exist in bed the gas-solid two-phase axially and vertically mix inhomogeneous, and the easy coalescence of bubble, easily cause the problem such as gush, thereby very likely produce the fluidisation dead band above distribution grid, the safety and stability of device reduces.Because transverse movement and the back-mixing effect of particle are relatively poor, oxygen is easier to be cohered in actual production process because hot-spot causes particle in the situation that lead to, and even causes slagging scorification on distribution grid, finally causes whole device non-normal stop.
Summary of the invention
It is high that the purpose of this utility model is to provide a kind of gasification efficiency, the distribution device in gas-fluid of the fluidized-bed reactor that safety and stability is good.
fluidized bed gas distribution apparatus of the present utility model is by housing, gas distribution grid, air inlet, flange, the jet rows ash pipe forms, it is characterized in that housing is comprised of the circular cylindrical shell on top and the straight tube housing of bottom, form gas distribution grid by cylinder distribution grid and circular cone distribution grid, the cylinder distribution grid is arranged in circular cylindrical shell, form air chamber between circular cylindrical shell and cylinder distribution grid, cylinder distribution grid lower end is connected with the straight tube housing with the circular cone distribution grid, the cylinder air admission hole is arranged on the cylinder distribution grid, the circular cone distribution grid is arranged in the straight tube housing, be distributed with the circular cone air admission hole on the circular cone distribution grid, on the circular cone distribution grid, be connected with the cylinder air chamber outside the circular cylindrical shell bottom, cylinder cover body wall within the cylinder air chamber has air admission hole, the cylinder air chamber has the cylinder air inlet of air chamber that is the symmetry status distribution, the straight tube lower housing portion has the circular cone air inlet, straight tube housing bottom adpting flange, circular cone distribution grid bottom is connected with the jet rows ash pipe.
The circular cone distribution grid conical surface as above and straight tube housing angle are 20-90 ° (when angle was 90 °, the circular cone distribution grid was dull and stereotyped distribution grid).Every row's air admission hole on cylinder cover body wall and straight tube housing wall all distributes by concentric circles, and the overall percent opening of distribution grid is 0.5%-6.0%, and the aperture is the 0.5-3.0 millimeter.
On the straight tube housing wall, the perforate direction of circular cone air admission hole is vertically upward.
When using the utility model in fluid bed, what fluidizing gas had an aperture vertically upward on the air inlet on the straight tube housing and circular cone distribution grid enters the solid material Mixed Zone, makes bed be in fluidized state; Simultaneously, air inlet in cylinder air chamber both sides passes into gas, enter the cylinder air chamber, after flowing through air admission hole and making distribution of gas evenly, from the air chamber process cylinder air admission hole that forms between circular cylindrical shell and cylinder distribution grid, enter at last the solid material Mixed Zone, for generation of the high-temperature region with adjust the back-mixing state of solid.
The gas speed of circular cone distribution grid and cylinder distribution grid can independently be regulated.Adopt vertical and horizontal cloth wind simultaneously, solid material can be realized significantly circumnutation in bed, strengthened the horizontal mixing of material, and then has strengthened heat transfer and mass transfer in stove, extend the time of staying of solid material in bed, thereby improved the gasification efficiency of fuel.By side cloth wind, solved in the situation that logical oxygen because the localized hyperthermia that vertical cloth wind produces coheres particle in actual production process, even causes the problem of slagging scorification on distribution grid.
Distribution grid of the present invention is compared with taper or dull and stereotyped distribution grid and is had the following advantages:
1) mode that combines by circular cone distribution grid and cylindrical shape distribution grid, be that bottom opening combines with lateral opening hole, strengthen the horizontal disturbance of fluid bed inside, made an interior gas-solid mixing axial and vertically more even, strengthened the heat transfer in the course of reaction, mass transfer.
2) by the side to cloth wind, strengthened lateral shear speed, the size of bubble is reduced, destroy the coalescence of bubble, stablize bed, avoid gushing, improved the safety and stability that installs.
3) by side cloth wind, solved in the situation that logical oxygen coheres particle because of the localized hyperthermia that vertical cloth wind produces in actual production process, even the problem of slagging scorification on distribution grid.
4) distribution grid of the present invention can be widely used in the independent gasification of coal, living beings (comprising rubbish etc.) etc. or common gasification and the catalytic gasification of burning and coal and living beings.
Description of drawings:
Fig. 1 is stereogram of the present utility model, and Fig. 2 is front view of the present utility model, and Fig. 3 is top view of the present utility model.
As shown in the figure, the 1st, cylinder distribution grid, the 2nd, cylinder air admission hole, the 3rd, circular cylindrical shell, the 4th, cylinder air chamber, the 5th, air admission hole, the 6, the 7th, cylinder air inlet of air chamber, the 8th, circular cone distribution grid, the 9th, circular cone air admission hole, the 10th, circular cone air inlet, the 11st, flange, the 12nd, jet rows ash pipe, the 13rd, straight tube housing.
The specific embodiment
When using the utility model in fluid bed, fluidizing gas has vertically upward circular cone air admission hole 9 and enters the solid material Mixed Zone on the circular cone air inlet 10 on straight tube housing 13 and circular cone distribution grid 8, make bed be in fluidized state; Simultaneously, cylinder air inlet 6,7 in cylinder air chamber 4 both sides passes into gas, enter cylinder air chamber 4, after flowing through air admission hole 5 and making distribution of gas evenly, from the air chamber process cylinder air admission hole 2 that forms between circular cylindrical shell 3 and cylinder distribution grid 1, enter at last the solid material Mixed Zone, for generation of the high-temperature region with adjust the back-mixing state of solid.The gas speed of circular cone distribution grid 8 and cylinder distribution grid 1 can independently be regulated
Circular cone distribution grid 8 is 45 ° with straight tube housing 13 angles.Cylinder distribution grid 1 has cylinder air admission hole 2, and air admission hole is pressed concentric circles and distributed, and percent opening is 3%, and the aperture is 2 millimeters.Have circular cone air admission hole 9 on circular cone distribution grid 8, air admission hole is pressed concentric circles and is distributed, and percent opening is 1%, and the aperture is 1.5 millimeters, the other the same as in Example 1.
Circular cone distribution grid 8 is 60 ° with straight tube housing 13 angles.Cylinder distribution grid 1 has cylinder air admission hole 2, and air admission hole is pressed concentric circles and distributed, and percent opening is 5%, and the aperture is 3 millimeters.Have circular cone air admission hole 9 on distribution grid 8, air admission hole is pressed concentric circles and is distributed, and percent opening is 2%, and the aperture is 2 millimeters, the other the same as in Example 1.
Claims (5)
1. fluidized-bed reactor distribution device in gas-fluid, it is by housing, gas distribution grid, air inlet, flange, the jet rows ash pipe forms, it is characterized in that housing is comprised of the circular cylindrical shell (3) on top and the straight tube housing (13) of bottom, form gas distribution grid by cylinder distribution grid (1) and circular cone distribution grid (8), cylinder distribution grid (1) is arranged in circular cylindrical shell (3), form air chamber between circular cylindrical shell (3) and cylinder distribution grid (1), cylinder distribution grid (1) lower end is connected 13 with circular cone distribution grid (8) with the straight tube housing) be connected, cylinder air admission hole (2) is arranged on cylinder distribution grid (1), circular cone distribution grid (8) is arranged in straight tube housing (13), be distributed with circular cone air admission hole (9) on circular cone distribution grid (8), on circular cone distribution grid (8), circular cylindrical shell (3) is connected with cylinder air chamber (4) outside the bottom, circular cylindrical shell (3) wall within cylinder air chamber (4) has air admission hole (5), cylinder air chamber (4) has the cylinder air inlet of air chamber (6 that is the symmetry status distribution, 7), circular cone air inlet (10) is arranged at straight tube housing (13) bottom, straight tube housing (13) bottom adpting flange (11), circular cone distribution grid (8) bottom is connected with jet rows ash pipe (12).
2. a kind of fluidized-bed reactor distribution device in gas-fluid as claimed in claim 1, is characterized in that the conical surface of described circular cone distribution grid (8) and straight tube housing (13) angle are 20-90 °.
3. a kind of fluidized-bed reactor distribution device in gas-fluid as claimed in claim 1, it is characterized in that the every row's air admission hole on described circular cylindrical shell (3) wall and straight tube housing (13) wall all distributes by concentric circles, the overall percent opening of distribution grid is 0.5%-6.0%, and the aperture is the 0.5-3.0 millimeter.
4. a kind of fluidized-bed reactor distribution device in gas-fluid as claimed in claim 1, is characterized in that the overall percent opening of described distribution grid is 0.5%-6.0%, and the aperture is the 0.5-3.0 millimeter.
5. a kind of fluidized-bed reactor distribution device in gas-fluid as claimed in claim 1, is characterized in that the perforate direction of circular cone air admission hole (9) on described straight tube housing (13) wall is vertically upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578235 CN202983652U (en) | 2012-11-06 | 2012-11-06 | Gas distribution device of fluidized bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578235 CN202983652U (en) | 2012-11-06 | 2012-11-06 | Gas distribution device of fluidized bed reactor |
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| Publication Number | Publication Date |
|---|---|
| CN202983652U true CN202983652U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220578235 Expired - Lifetime CN202983652U (en) | 2012-11-06 | 2012-11-06 | Gas distribution device of fluidized bed reactor |
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| CN (1) | CN202983652U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433158A (en) * | 2013-09-23 | 2013-12-11 | 山东佐田氏生物科技有限公司 | Separation device for light-weight impurity in solid particles |
| CN103897745A (en) * | 2014-03-28 | 2014-07-02 | 新奥科技发展有限公司 | Fluidized bed distribution plate, fluidized bed reactor and gasification method thereof |
| CN107715815A (en) * | 2017-11-01 | 2018-02-23 | 宁波工程学院 | A kind of granular polycrystalline silicon fluid bed process units of sound wave auxiliary |
| CN108085067A (en) * | 2017-12-28 | 2018-05-29 | 新奥科技发展有限公司 | A kind of gas distributor of fludized bed, fluidized-bed reactor and its gasification process |
| CN111036151A (en) * | 2019-12-30 | 2020-04-21 | 上海睿碳能源科技有限公司 | Slurry bed reactor with multi-stage perforated structure distribution plate |
-
2012
- 2012-11-06 CN CN 201220578235 patent/CN202983652U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433158A (en) * | 2013-09-23 | 2013-12-11 | 山东佐田氏生物科技有限公司 | Separation device for light-weight impurity in solid particles |
| CN103897745A (en) * | 2014-03-28 | 2014-07-02 | 新奥科技发展有限公司 | Fluidized bed distribution plate, fluidized bed reactor and gasification method thereof |
| CN107715815A (en) * | 2017-11-01 | 2018-02-23 | 宁波工程学院 | A kind of granular polycrystalline silicon fluid bed process units of sound wave auxiliary |
| CN108085067A (en) * | 2017-12-28 | 2018-05-29 | 新奥科技发展有限公司 | A kind of gas distributor of fludized bed, fluidized-bed reactor and its gasification process |
| CN111036151A (en) * | 2019-12-30 | 2020-04-21 | 上海睿碳能源科技有限公司 | Slurry bed reactor with multi-stage perforated structure distribution plate |
| CN111036151B (en) * | 2019-12-30 | 2022-02-11 | 上海睿碳能源科技有限公司 | Slurry bed reactor with multi-stage perforated structure distribution plate |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170921 Address after: The 065001 Hebei economic and Technological Development Zone of Langfang Huaxiang Xinyuan host new Austrian Science and Technology Park in Southern District Patentee after: ENN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: Taoyuan Road, Shanxi city of Taiyuan Province, No. 27 030001 Patentee before: INSTITUTE OF COAL CHEMISTRY, CHINESE ACADEMY OF SCIENCES |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |