CN111013502A - Three-dimensional photocatalysis annular fluidized bed device - Google Patents
Three-dimensional photocatalysis annular fluidized bed device Download PDFInfo
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- CN111013502A CN111013502A CN202010064005.6A CN202010064005A CN111013502A CN 111013502 A CN111013502 A CN 111013502A CN 202010064005 A CN202010064005 A CN 202010064005A CN 111013502 A CN111013502 A CN 111013502A
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- fluidization
- wall pipe
- fluidized bed
- annular
- gas
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 13
- 238000007146 photocatalysis Methods 0.000 title description 4
- 238000005243 fluidization Methods 0.000 claims abstract description 35
- 239000011941 photocatalyst Substances 0.000 claims abstract description 6
- 238000004073 vulcanization Methods 0.000 claims abstract description 3
- 238000009826 distribution Methods 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 238000005286 illumination Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/123—Ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00002—Chemical plants
- B01J2219/00004—Scale aspects
- B01J2219/00011—Laboratory-scale plants
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention provides a three-dimensional photocatalytic annular fluidized bed device, which comprises a transparent fluidization inner wall pipe and a transparent fluidization outer wall pipe which are coaxially sleeved, wherein an annular fluidization area is formed at the lower part between the fluidization inner wall pipe and the vulcanization outer wall pipe; the light source is arranged in the fluidized pipe on the inner wall, so that the light source can be uniformly irradiated and distributed on the inner wall surface of the annular fluidized bed, the material in the fluidized bed is fully irradiated, the light receiving surface of the photocatalyst is uniform, and the catalysis efficiency is high; the inner wall pipe of the fluidized bed can be filled with a light guide part according to the required illumination intensity so as to adjust the light guide property; the annular structure makes the fluidized substance disperse more uniformly, thereby improving the reaction efficiency.
Description
Technical Field
The invention relates to a three-dimensional photocatalytic annular fluidized bed device.
Background
The packing form of the catalytic reactor is divided into fixed bed packing and fluidized bed packing, and for photocatalytic reaction, incident light in the fixed bed packing form cannot penetrate through the inside of a bed layer, so that the defects of low light utilization rate, incapability of realizing continuous operation and the like exist. In the traditional photocatalytic fluidized bed device, the shell of the fluidized bed is thick, so that the light is not favorably shot; in addition, the traditional photocatalytic fluidized bed device is mostly a single fluidized bed, and the problem of small batch processing amount exists; however, in the conventional studies, the studies for enhancing the light guiding property are lacking, so that the light utilization rate is not high and the catalytic effect is not good enough.
Disclosure of Invention
The invention improves the problems, namely the technical problems to be solved by the invention are the problems of thick bed layer, uneven flow, low light utilization rate and low photocatalysis efficiency of the traditional three-dimensional photocatalytic fluidized bed.
The specific embodiment of the invention is as follows: a three-dimensional photocatalytic annular fluidized bed device comprises a transparent fluidization inner wall pipe and a transparent fluidization outer wall pipe which are coaxially sleeved, wherein an annular fluidization area is formed at the lower part between the fluidization inner wall pipe and the vulcanization outer wall pipe, a light source is arranged in the fluidization inner wall pipe, a light guide body and a photocatalyst are filled in the fluidization area between the fluidization inner wall pipe and the fluidization outer wall pipe, and a gas inlet device for introducing gas is arranged at the lower part of the fluidization area.
Furthermore, the air inlet device comprises an air distribution plate fixed on the lower parts of the fluidization inner wall pipe and the fluidization outer wall pipe, an air pre-distribution chamber is fixed below the air distribution plate and provided with a fluidization medium inlet, and air guide holes capable of being communicated with the fluidization area are uniformly distributed on the air distribution plate.
Further, the light source is an ultraviolet lamp.
Further, the light guide member is granular transparent quartz glass.
Compared with the prior art, the invention has the following beneficial effects: (1) compared with the traditional cylindrical fluidized bed, the annular fluidized bed has the advantage of thin bed layer, is beneficial to the light intake and reduces the light loss; (2) the light source is arranged in the fluidized pipe on the inner wall, so that the light source can be uniformly irradiated and distributed on the inner wall surface of the annular fluidized bed, the material in the fluidized bed is fully irradiated, the light receiving surface of the photocatalyst is uniform, and the catalysis efficiency is high; (3) the inner wall pipe of the fluidized bed can be filled with a light guide part according to the required illumination intensity so as to adjust the light guide property; (4) the annular structure ensures that the fluidized substances are dispersed more uniformly, thereby improving the reaction efficiency; (5) the invention has simple and reasonable structure, can adjust the pipe diameters of the inner wall surface pipe and the outer wall surface pipe of the fluidized bed according to the requirement, and provides convenient conditions for the amplification of the reactor.
Drawings
FIG. 1 is a schematic view of a three-dimensional annular fluidized bed device for photocatalysis according to the present invention.
In the figure: 1-a fluidized medium inlet, 2-a gas pre-distribution chamber, 3-a gas distribution plate, 4-a fluidized area, 5-a light source, 6-a fluidized outer wall pipe, 7-a fluidized inner wall pipe and 8-an air guide hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in FIG. 1, a three-dimensional photocatalytic annular fluidized bed apparatus comprises a transparent inner fluidizing tube 7 and a transparent outer fluidizing tube 6 coaxially sleeved with each other, and an annular fluidized zone 4 is formed at a lower portion between the inner fluidizing tube and the outer vulcanizing tube, a light source 5 is disposed in the inner fluidizing tube, a light guide and a photocatalyst are filled in the fluidized zone between the inner fluidizing tube and the outer fluidizing tube, and a gas inlet device for introducing gas is disposed at a lower portion of the fluidized zone.
The gas inlet device comprises a gas distribution plate 3 fixed on the lower parts of the fluidization inner wall pipe and the fluidization outer wall pipe, a gas pre-distribution chamber is fixed below the gas distribution plate and provided with a fluidization medium inlet 1, and gas guide holes 8 capable of being communicated with a fluidization area are uniformly distributed on the gas distribution plate.
In this embodiment, the light source is an ultraviolet lamp, and the light guide member is granular transparent quartz glass.
In the embodiment, the particle size of the transparent quartz glass is dozens to hundreds of microns, the material has high temperature resistance, excellent chemical stability and optimal ultraviolet-transmitting spectrum performance, and is filled in a fluidized bed together with a photocatalyst, so that the light guide property is enhanced.
During fluidization, the fluidization inner wall pipe 7 of the annular fluidized bed is filled with the light guide part, and the light source 5 is arranged in the inner wall pipe, so that the advantage of thin bed layer thickness of the fluidization area 4 of the annular fluidized bed is utilized, the light intake is facilitated, the light loss is reduced, and the light guide part is filled on the fluidization inner wall pipe 7, so that the light guide property can be greatly enhanced.
In the embodiment, the air inlet mode of the three-dimensional annular fluidized bed is that air is introduced from the bottom end 1, the air is uniformly distributed in the fluidization region 4 through the air guide holes 8 in the air pre-distribution chamber 2 under the dispersion action of the air distribution plate 3, and the air is discharged from the upper end of the fluidized bed after reaction.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (4)
1. The three-dimensional photocatalytic annular fluidized bed device is characterized by comprising a transparent fluidization inner wall pipe and a transparent fluidization outer wall pipe which are coaxially sleeved, wherein an annular fluidization area is formed at the lower part between the fluidization inner wall pipe and the vulcanization outer wall pipe, a light source is arranged in the fluidization inner wall pipe, a light guide body and a photocatalyst are filled in the fluidization area between the fluidization inner wall pipe and the fluidization outer wall pipe, and a gas inlet device for introducing gas is arranged at the lower part of the fluidization area.
2. The annular fluidized bed apparatus according to claim 1, wherein the gas inlet device comprises a gas distribution plate fixed on the lower part of the inner and outer fluidized wall tubes, a gas pre-distribution chamber is fixed under the gas distribution plate, the gas pre-distribution chamber has a fluidized medium inlet, and gas guide holes capable of communicating with the fluidized area are uniformly distributed on the gas distribution plate.
3. The apparatus of claim 1, wherein the light source is an ultraviolet lamp.
4. The three-dimensional photocatalytic annular fluidized bed apparatus according to claim 1, wherein the light guide member is a granular transparent quartz glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010064005.6A CN111013502A (en) | 2020-01-20 | 2020-01-20 | Three-dimensional photocatalysis annular fluidized bed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010064005.6A CN111013502A (en) | 2020-01-20 | 2020-01-20 | Three-dimensional photocatalysis annular fluidized bed device |
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| Publication Number | Publication Date |
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| CN111013502A true CN111013502A (en) | 2020-04-17 |
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| CN202010064005.6A Pending CN111013502A (en) | 2020-01-20 | 2020-01-20 | Three-dimensional photocatalysis annular fluidized bed device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761259Y (en) * | 2004-10-29 | 2006-03-01 | 华南理工大学 | Gas-solid fluid-bed photocatalysis device |
| CN101234291A (en) * | 2007-11-12 | 2008-08-06 | 青岛科技大学 | Photocatalysis fluid bed reactor device for degrading volatile organic matter |
| CN101837242A (en) * | 2010-03-19 | 2010-09-22 | 青岛科技大学 | Acousto-optic coupling annular gap photocatalytic fluidized bed VOCs degrading device |
| CN102600719A (en) * | 2012-03-30 | 2012-07-25 | 潍坊学院 | VOCs (volatile organic compounds) photocatalytic degradation device of jet-flow coupling annular-space fluidized bed |
| CN109745937A (en) * | 2019-03-19 | 2019-05-14 | 福州大学 | A kind of photocatalysis fluid bed device of two dimension |
-
2020
- 2020-01-20 CN CN202010064005.6A patent/CN111013502A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761259Y (en) * | 2004-10-29 | 2006-03-01 | 华南理工大学 | Gas-solid fluid-bed photocatalysis device |
| CN101234291A (en) * | 2007-11-12 | 2008-08-06 | 青岛科技大学 | Photocatalysis fluid bed reactor device for degrading volatile organic matter |
| CN101837242A (en) * | 2010-03-19 | 2010-09-22 | 青岛科技大学 | Acousto-optic coupling annular gap photocatalytic fluidized bed VOCs degrading device |
| CN102600719A (en) * | 2012-03-30 | 2012-07-25 | 潍坊学院 | VOCs (volatile organic compounds) photocatalytic degradation device of jet-flow coupling annular-space fluidized bed |
| CN109745937A (en) * | 2019-03-19 | 2019-05-14 | 福州大学 | A kind of photocatalysis fluid bed device of two dimension |
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Application publication date: 20200417 |
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