CN2305245Y - Fluidized bed with high effective bubble breaking member - Google Patents
Fluidized bed with high effective bubble breaking member Download PDFInfo
- Publication number
- CN2305245Y CN2305245Y CN 97224188 CN97224188U CN2305245Y CN 2305245 Y CN2305245 Y CN 2305245Y CN 97224188 CN97224188 CN 97224188 CN 97224188 U CN97224188 U CN 97224188U CN 2305245 Y CN2305245 Y CN 2305245Y
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- gas
- fluid bed
- fluidized bed
- utility
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model relates to a fluidized bed with a high effective bubble breaking member. The lower part of a reaction casing of the fluidized bed is provided with a gas inlet, a gas distributing plate and a feeding device; solid granular catalysts are arranged on the upper face of the distributing plate, a gas and solid separator and a reaction gas product outlet are arranged at the upper part of the reaction casing, and a thick phase zone is provided with a multi-layer multi-rotation horizontal guiding rotating net of which the structure can form a small louver combining body with more than two rotating centers. The utility model has the characteristics that the fluidized bed can effectively reduce the diameters of bubbles, raise the solid phase contacting effect and improve the fluidizing quality without generating thermal deformation. The utility model is suitable for the distribution of wide granularity, and has wide application range; because the utility model is additionally provided with a suspended chain, the fluidized bed has better bubble breaking effect.
Description
The utility model relates to use physics and the used device technique field of chemical method under fluid and the solid particle situation.
In the bed inside of fluid bed, most of solid particle is in the emulsification mutually, and emulsification is the intensive gas-solid mixture of a kind of solid phase mutually.Experiment is pointed out, even the critical fluidizing gas velocity of gas speed ratio is much bigger, the gas speed in emulsification mutually is also substantially near critical fludization velocity.Therefore, surpass the excess gas of critical gas velocity, almost all rise by bed with bubble form.The change of bed expansion ratio is the result that bubble diameter changes.Therefore, setting has broken and limits the member that bubble becomes big function in bed, and control and minimizing bubble diameter can realize improving gas-solid contact effect, improve the purpose of fluidization quality.In the fluid bed of China's naphthalene oxidation system phthalic anhydride, often adopt the control of horizontal baffle member and tubular type vertical member and reduce bubble.But horizontal baffle is that air pocket is divided into the bar shaped bubble, and the bubble diameter after the recovery is still bigger, and the bubble disintegration effect is undesirable, and it is yielding to be heated.Tubulose vertical member spacing is subjected to limitation of construction, can not be too little, and the bubble crushing effect is also undesirable.
The purpose of this utility model provides a kind of fluid bed with efficiency crushing bubble member, its employing level is revolved guiding more and is revolved the original horizontal baffle of net replacement, effective bubble crushing, reduce bubble diameter, improve gas-solid contact effect, improve fluidization quality, be difficult for thermal deformation, durable, help improving production capacity and product yield.Add the chain vertical member, effect is better.The utility model is achieved in that a kind of fluid bed with efficiency crushing bubble member, it is characterized in that being provided with gas access and gas distribution grid in the bottom of reactor shell, feed arrangement, it on distribution grid the solid granulates catalyst, top is provided with gas-solid separator and the outlet of reacting gas product, separator is provided with down dipleg, being provided with the multilayer level at concentrated phase area revolves guiding more and revolves net, its structure is for constituting the little shutter assembly of 2 above pivots, and each little shutter is provided with the many piece transverse slats vertical with guide vane.Thereby constitute many grid, the grid size can be 10mm * 50mm.
Every two adjacent little shutter guide vanes are at angle as 120 ° of grades or orthogonal.
In order to strengthen the bubble breaking effect, can be at the solid space of concentrated phase area horizontal baffle member, pass and revolving guiding more and revolve online chain cylindrical void, be hung with many chains (member).Can be hung with many chains at following bottom, dipleg exit concentrated phase reaction zone,, also be hung with many chains at following top, dipleg exit concentrated phase reaction zone.The chain stripe pitch is littler, clashes into the cutting and crushing effect better, and the chain stripe pitch can be 50mm-200mm.
On the above-mentioned horizontal baffle, the junction that is preferably in per two little shutter adjacents and 4 little shutters is equipped with a chain, and its effect is preferable.
The utility model has the advantages that: revolve net because the employing level is revolved guiding more, can make air pocket be broken into numerous isometrical minute bubbles, improve gas-solid contact effect, improve fluidization quality, help improving production capacity and product yield.Not yielding, durable, applied range.Owing to revolve the effect that guiding is revolved net more, can produce thrust on the screw, air-flow is radially by chain mesh and both sides, chain is limited radially wobbling two-layer revolving between the net, the bump bubble crushing, coalescence phenomenon when bubble rises obtains limited inhibition, improves fluidization quality, and the unique effect that improves the interphase mass transfer effect is that other any members can't be compared.The two reduces bubble diameter in conjunction with obtaining to force down bed, significantly improves the alternate biography of gas-solid and changes effect, when particularly the bed granularity is tending towards refinement, still can adopt higher operating gas velocity.The utility model applied range can be used for fluid bed and other fluid beds of naphthalene oxidation system phthalic anhydride.
Be further described below in conjunction with embodiment and accompanying drawing, but not as to qualification of the present utility model.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that level is revolved the structural representation that guiding is revolved net more.
Fig. 3 is partial enlarged drawing that revolves among Fig. 2.
Fig. 4 is the A-A profile among Fig. 3.
Among Fig. 1,1 is air intake, 2 is gas distribution grid, 3 is the material gasification spray gun, and chain vertical member 4 revolves the space that chain cylindrical void on the net 5 is suspended on reaction zone by revolving guiding more, and 6 is the concentrated phase area waste heat boiler, 7 be gas-solid separator 9, following dipleg, 8 are dilute phase reaction waste heat boiler, and 10 is housing, and 11 is pressure regulator.Primary cyclone is two inlets, to reduce wear, increases the service life.
Among Fig. 3,12 is the chain vertical member, and 13 is heat exchanger tube.
Among Fig. 4,14 is little louver board, and 15 for dentation supports transverse slat, can form many sub-boxes, is difficult for thermal deformation, and effectively cuts apart bubble.The blade guide plate is horizontal by 30-60 °, and 45 ° preferable.
With this device naphthalene oxidation system phthalic anhydride, catalyst average diameter 150 μ m, wherein＜53 μ m accounts for 3.6%, adopt chain vertical member and level to revolve to lead more revolve net after, catalyst average diameter 96 μ m, wherein＜53 μ m accounts for 19.86%.The phthalic anhydride recovery rate improves, and has improved economic benefit, and effect is preferable.
Claims (8)
1, a kind of fluid bed with efficiency crushing bubble member, it is characterized in that being provided with gas access and gas distribution grid in the bottom of reactor shell, feed arrangement, it on distribution grid the solid granulates catalyst, top is provided with gas-solid separator and the outlet of reacting gas product, separator is provided with down dipleg, being provided with the multilayer level at concentrated phase area revolves guiding more and revolves net, its structure is for constituting the little shutter assembly of 2 above pivots, and each little shutter is provided with the many piece transverse slats vertical with guide vane.
2, fluid bed according to claim 1 is characterized in that transverse slat is the dentation transverse slat.
3, fluid bed according to claim 2 is characterized in that every two adjacent little shutter guide vanes are orthogonal.
4, fluid bed according to claim 3 is characterized in that the grid that guide vane on the little shutter and transverse slat are formed is of a size of 10mm-50mm.
5, according to claim 1,2,3 or 4 described fluid beds, it is characterized in that revolving the solid space that guiding is revolved net in concentrated phase area multilayer level more, pass and revolve online chain cylindrical void, be hung with many chains.
6, fluid bed according to claim 5 is characterized in that being hung with many chains at following bottom, dipleg exit concentrated phase reaction zone, at following top, dipleg exit concentrated phase reaction zone, also is hung with many chains.
7, fluid bed according to claim 6 is characterized in that the chain stripe pitch is 50mm-200mm.
8, fluid bed according to claim 5 is characterized in that being equipped with a chain in the junction of per two little shutter adjacents and 4 little shutters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224188 CN2305245Y (en) | 1997-08-15 | 1997-08-15 | Fluidized bed with high effective bubble breaking member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224188 CN2305245Y (en) | 1997-08-15 | 1997-08-15 | Fluidized bed with high effective bubble breaking member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2305245Y true CN2305245Y (en) | 1999-01-27 |
Family
ID=33938622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224188 Expired - Fee Related CN2305245Y (en) | 1997-08-15 | 1997-08-15 | Fluidized bed with high effective bubble breaking member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2305245Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112020393A (en) * | 2018-04-23 | 2020-12-01 | 石原产业株式会社 | Internals, fluidized bed reactor, and method for producing trifluoromethylpyridine compound |
-
1997
- 1997-08-15 CN CN 97224188 patent/CN2305245Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112020393A (en) * | 2018-04-23 | 2020-12-01 | 石原产业株式会社 | Internals, fluidized bed reactor, and method for producing trifluoromethylpyridine compound |
| US11358110B2 (en) | 2018-04-23 | 2022-06-14 | Ishihara Sangyo Kaisha, Ltd. | Internal, fluidized bed reaction apparatus, and method for manufacturing trifluoromethyl pyridine-based compound |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |