CN203411513U - Fluidized bed grid equipment - Google Patents
Fluidized bed grid equipment Download PDFInfo
- Publication number
- CN203411513U CN203411513U CN201320408450.5U CN201320408450U CN203411513U CN 203411513 U CN203411513 U CN 203411513U CN 201320408450 U CN201320408450 U CN 201320408450U CN 203411513 U CN203411513 U CN 203411513U
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- fluidized bed
- grid
- fluidized
- bed
- back taper
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Abstract
The utility model discloses fluidized bed grid equipment, belongs to the technical field of fluidized and petrochemical equipment, and is used for solving the problems of uneven distribution of a dense-phase fluidized bed gas, greater fluctuation of a fluidized bed caused by bubbles, low efficiency of mass transfer and heat transfer and relatively high catalyst loss. The fluidized bed grid equipmentcomprises the fluidized bed, a gas distributor, a cyclone separator, a dipleg, a wing valve or an inverted cone, wherein one layer of grid is respectively arranged above the distributor for 0-0.5 m, below the wing valve or the inverted cone for 0.1-0.5 m and below a charge level for 0.3-0.8 m; 1-3 layers of grids are arranged above the wing valve or the inverted cone for 0.1-5 m. The fluidized bed grid equipment can redistribute a gas, modify the working environment of the wing valve or the inverted cone, improve the mass transfer and heat transfer efficiency of the fluidized bed, reduce the elutriation of the fluidized bed, improve the gas utilization rate, enhance the device elasticity, and improve the fluidized bed efficiency and reduce the catalyst loss, and is used for regenerators and reactors of devices for catalytic cracking, methanol to olefin and treatment of bad residual oil.
Description
Technical field
The utility model belongs to fluidization, petrochemical equipment technical field, particularly a kind of fluidized-bed grid equipment.
Background technology
From the forties in last century dense phase fluidized bed be just widely used in industry.Domestic refining catalytic cracking field is since the sixties in last century also widespread use dense phase fluidized bed.Today, dense phase fluidized bed remained the industry especially of paramount importance method in catalytic cracking field and technology.The early stage dense phase fluidized bed in catalytic cracking field is fairly simple, generally comprise equipment barrel, gas distributor, cyclonic separator, dipleg, flutter valve or back taper, its bearing of task is also fairly simple, is applied to process wax oil, not high to mass transfer, heat transfer, fluidized-bed stability requirement.Yet the task that today, catalytic cracking was born is significantly expansion also, as process residual oils, production premium-type gasoline, production lighter hydrocarbons etc., the requirement of dense phase fluidized bed is increased substantially, as: require gas to be more evenly distributed at fluidized-bed, to improve mass-transfer efficiency; Flutter valve or back taper Working environment require more stable, make device have better turndown ratio; Require fluidized-bed bubble size little, make gas-solid contact more abundant, improve fluidized-bed efficiency; Reduce fluidized-bed elutriation, reduce catalyst attrition etc.
In recent years for improving fluidization quality, improve fluidized-bed efficiency and carried out a series of improvement, as set up grid etc. at revivifier fluidized-bed.But do not form integral framework, from gas, do not distribute again, improve flutter valve or back taper Working environment, improve fluidized-bed mass-and heat-transfer efficiency, reduce the analysis and modification design of fluidized-bed elutriation aspect.
Summary of the invention
The purpose of this utility model is to provide a kind of fluidized-bed inner member, from gas, distributes, improves flutter valve or back taper Working environment, improves fluidized-bed mass-and heat-transfer efficiency, reduces fluidized-bed elutriation aspect and improve.
The utility model solves the technical scheme that its technical problem adopts: comprise fluidized-bed, sparger, cyclonic separator, dipleg, flutter valve or back taper, it is characterized in that: below 0～0.5m, flutter valve or back taper above sparger, below 0.1～0.5m, charge level, 0.3～0.8m arranges respectively 1 layer of grid, above flutter valve or back taper, 0.1～5m arranges 1～3 layer of grid.
Further, sparger top 0～0.5m grid is long strip type grid, by some long strip type blades and fixed link, formed, between every 2 take-off pipes of sparger, some long strip type blades are set, itself and take-off pipe parallel arrangement, under its blade, along the circulation area homalographic between 2 branch's tube walls is cut apart, on each blade, 2 take-off pipe superjacent air space homalographics are cut apart on edge.
Further, under flutter valve or back taper below, charge level, to overlook be grid type to square grid, and size of mesh opening is 20～100mm, and its voidage is 70%～95%.
The utility model innovative point and positively effect:
The utility model innovative point is: below 0～0.5m, flutter valve or back taper above sparger, below 0.1～0.5m, charge level, 0.3～0.8m arranges respectively 1 layer of grid, and above flutter valve or back taper, 0.1～5m arranges 1～3 layer of grid.
The utility model positively effect is: can distribute to gas again, improve flutter valve or back taper Working environment, improve fluidized-bed mass-and heat-transfer efficiency, reduce fluidized-bed elutriation, can improve gas effciency, improve device elasticity, improve fluidized-bed efficiency, reduce catalyst attrition.
Accompanying drawing explanation
Fig. 1 is a kind of fluidized-bed grid equipment schematic diagram.
1-housing, square grid under 2-charge level, 3-fluidized-bed middle part grid, square grid under 4-flutter valve or back taper, square grid on 5-sparger, 6-sparger, 7-charge level, 8-dipleg, 9-flutter valve or back taper.
Embodiment
See Fig. 1, fluidized-bed upper surface is charge level 7, dipleg 7 and flutter valve or back taper 9 are placed in one, and 6,4 layers of grid of sparger are arranged at fluidized-bed bottom is square grid 5 on square grid 4, sparger under square grid 2 under charge level, fluidized-bed middle part grid 3, flutter valve or back taper from top to bottom successively.
Referring to Fig. 1, gas enters fluidized-bed from sparger 6, and first on sparger, square grid 5 distributes gas again, and gas is more evenly distributed in fluidized-bed bottom.Then bubble rises near flutter valve or back taper, and under flutter valve or back taper, square grid 4 diminishes its diameter air pocket fragmentation, improves fluidized-bed stability.Then bubble continues to rise to fluidized-bed middle part, and through fluidized-bed middle part, grid 3 diminishes its diameter air pocket fragmentation, improves contact area, the raising fluidized-bed efficiency of bubble and solid catalyst.Then bubble continues to rise near charge level, and under charge level, square grid 2 diminishes its diameter air pocket fragmentation, reduces fluidized-bed elutriation, reduces catalyst attrition.
Claims (3)
1. a fluidized-bed grid equipment, comprise fluidized-bed, sparger, cyclonic separator, dipleg, flutter valve or back taper, it is characterized in that: below 0～0.5m, flutter valve or back taper above sparger, below 0.1～0.5m, charge level, 0.3～0.8m arranges respectively 1 layer of grid, above flutter valve or back taper, 0.1～5m arranges 1～3 layer of grid.
2. equipment according to claim 1, it is characterized in that: sparger top 0～0.5m grid is long strip type grid, by some long strip type blades and fixed link, formed, between every 2 take-off pipes of sparger, some long strip type blades are set, itself and take-off pipe parallel arrangement, under its blade, along the circulation area homalographic between 2 branch's tube walls is cut apart, on each blade, 2 take-off pipe superjacent air space homalographics are cut apart on edge.
3. equipment according to claim 1, is characterized in that: under flutter valve or back taper below, charge level, to overlook be grid type to square grid, and size of mesh opening is 20～100mm, and its voidage is 70%～95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408450.5U CN203411513U (en) | 2013-07-09 | 2013-07-09 | Fluidized bed grid equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408450.5U CN203411513U (en) | 2013-07-09 | 2013-07-09 | Fluidized bed grid equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203411513U true CN203411513U (en) | 2014-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320408450.5U Expired - Lifetime CN203411513U (en) | 2013-07-09 | 2013-07-09 | Fluidized bed grid equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203411513U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801243A (en) * | 2015-05-05 | 2015-07-29 | 中国石油大学(北京) | Methanol-to-olefin reaction device |
| CN104826559A (en) * | 2015-05-05 | 2015-08-12 | 中国石油大学(北京) | Methanol-to-olefin reaction equipment |
| CN104930887A (en) * | 2014-03-18 | 2015-09-23 | 中国石油大学(北京) | Method for improving operation of vertical-tube-bundle gas-solid fluidized bed external heat remover |
-
2013
- 2013-07-09 CN CN201320408450.5U patent/CN203411513U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930887A (en) * | 2014-03-18 | 2015-09-23 | 中国石油大学(北京) | Method for improving operation of vertical-tube-bundle gas-solid fluidized bed external heat remover |
| CN104801243A (en) * | 2015-05-05 | 2015-07-29 | 中国石油大学(北京) | Methanol-to-olefin reaction device |
| CN104826559A (en) * | 2015-05-05 | 2015-08-12 | 中国石油大学(北京) | Methanol-to-olefin reaction equipment |
| CN104826559B (en) * | 2015-05-05 | 2016-11-16 | 中国石油大学(北京) | Methanol to olefins reaction equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140129 Effective date of abandoning: 20150715 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |