CN117886394A - Double-vortex photocatalytic device - Google Patents
Double-vortex photocatalytic device Download PDFInfo
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- CN117886394A CN117886394A CN202410158059.7A CN202410158059A CN117886394A CN 117886394 A CN117886394 A CN 117886394A CN 202410158059 A CN202410158059 A CN 202410158059A CN 117886394 A CN117886394 A CN 117886394A
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- Prior art keywords
- vortex
- photocatalytic
- fixed cylinder
- cylinder
- light source
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 239000010865 sewage Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 claims description 20
- 238000007146 photocatalysis Methods 0.000 claims description 15
- 229910052724 xenon Inorganic materials 0.000 claims description 11
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 10
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000013032 photocatalytic reaction Methods 0.000 abstract description 8
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 239000000376 reactant Substances 0.000 abstract description 2
- 239000011941 photocatalyst Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 2
- 229940043267 rhodamine b Drugs 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004113 cell culture Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 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
- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Catalysts (AREA)
Abstract
The invention provides a double-vortex photocatalytic device, which comprises a Taylor-warehouse Ai Teshuang vortex photocatalytic reactor, a material inlet and outlet pipeline and a cooling system; the Taylor-warehouse Ai Teshuang vortex photocatalytic reactor comprises a fixed cylinder, a rotary cylinder, a rotating shaft, a variable speed motor and a light source, wherein the rotary cylinder is inserted into the fixed cylinder, the central axes of the fixed cylinder and the rotary cylinder are overlapped, and two annular cavities are formed for accommodating a photocatalyst and reactants; the cooling system surrounds the light source and is used for isolating high temperature transmitted by the light source, so that the temperature of the sewage inside the light source can be conveniently controlled, the photocatalytic material is prevented from being deactivated due to the fact that the temperature of the light source is too high, and the degradation efficiency of the photocatalytic reaction is reduced; the dual-vortex structure increases the material processing capacity of the Taylor-Couette reactor, so that the photocatalytic material is better dispersed in the reactor, and photons are uniformly received and fully subjected to photocatalytic reaction with sewage.
Description
Technical Field
The invention relates to the field of photocatalytic reaction equipment design, in particular to a double-vortex photocatalytic device.
Background
Along with the rapid promotion of science and technology and living standard, the pollution to the environment caused by human beings is more and more serious, and the water pollution is one of the problems. In order to protect the water environment, various methods have been studied, and the photocatalytic technology is attracting attention because of its convenient operation, inexpensive materials and easy availability. However, the photocatalysis technology is limited by the fact that no proper photocatalysis device is provided for the photocatalysis technology to fully play a role, so that the photocatalysis technology has important significance for developing a novel photocatalysis device.
Compared with the traditional photocatalysis reactor, the Taylor-Couette reactor can improve the mass transfer efficiency and the photon transmission efficiency, and has great prospect in the photocatalysis field. The taylor-kuai reactor is constructed based on taylor-kuai vortices and operates on the principle that the solution in the gap between two rotating cylinders is forced by the wall rotation to form an annular reservoir Ai Teliu and a secondary steady-state flow featuring an axisymmetric annular vortex. The reactor based on the Taylor-Couette vortex can promote mixing and contact between reactants, increase the specific reaction surface area and the reaction time, greatly reduce damage to the photocatalytic material due to small wall shearing force, and simultaneously, the dispersing effect of the vortex can help the photocatalytic material to better and uniformly receive photons so as to complete the photocatalytic reaction. The existing Taylor-Couette reactor has the risks of uncontrollable experimental temperature, less material handling capacity, damage to a motor due to leakage of solution, and the like, so that the existing Taylor-Couette reactor cannot be amplified, and is difficult to meet the industrial large-scale production requirement.
Disclosure of Invention
Therefore, the invention aims to provide a double-vortex photocatalysis device, which increases the material treatment capacity of a Taylor-Couette reactor, facilitates the control of the internal sewage temperature, and provides technical support for the industrialized development of the device in the photocatalysis field.
In order to achieve the above object, the present invention provides the following technical solutions:
the double-vortex photocatalytic device is characterized by comprising a Taylor-base Ai Teshuang vortex photocatalytic reactor, a material inlet and outlet pipeline and a cooling system;
the Taylor-warehouse Ai Teshuang vortex photocatalytic reactor comprises a fixed cylinder, a rotary cylinder, a rotating shaft, a variable speed motor and a light source, wherein the fixed cylinder is an annular cylinder which is surrounded by an inner side wall and an outer side wall and is provided with an upward opening, an annular cavity is used for placing photocatalytic materials and the fixed cylinder, the rotary cylinder is of a cylinder body structure with a downward opening, and the inner diameter of the rotary cylinder is between the diameters of the inner wall and the outer side wall of the fixed cylinder; the wall of the rotary drum is inserted into the annular cavity of the fixed drum, and the annular cavity is divided into two annular cavities with communicated lower parts; the top of the rotary drum is fixedly connected with a rotating shaft, and the rotating shaft is driven by a variable speed motor; the light source is arranged in a space surrounded by the inner wall of the fixed cylinder;
the cooling system is arranged around the light source, and the upper part and the lower part of the outer wall of the fixed cylinder are respectively provided with a material inlet and a material outlet which are connected with a material inlet and outlet pipeline;
the fixed cylinder, the rotary cylinder and the cooling system surrounding the light source are all made of transparent materials.
Further, the central axes of the fixed cylinder and the rotary cylinder coincide.
Further, the cooling system is an annular cylindrical cooling cavity arranged between the inner wall of the fixed cylinder and the light source, and the lower part and the upper part of the cylindrical cooling cavity are respectively provided with a cooling water inlet pipeline and a cooling water outlet pipeline.
Further, the annular cylindrical cooling cavity is integrated with the stator, and the annular cylindrical cooling cavity and the stator share the inner wall of the stator.
Further, the material inlet is not higher than the height of the inner side wall surface of the fixed cylinder and is connected with the sewage pool; the material outlet is positioned at one side opposite to the material inlet and is connected with the clean water tank.
Further, the light source is a xenon lamp, and central axes of the xenon lamp and the fixed cylinder are coincided; the xenon lamp is connected with an adjustable power supply.
Further, the taylor-library Ai Teshuang vortex photocatalytic reactor is placed in a cylindrical support with a cover plate.
Further, a feed pump and a feed valve are arranged between the material inlet and the sewage tank, a discharge valve is arranged between the material outlet and the clean water tank, a water inlet valve is arranged at the inlet of the cooling system, and a water outlet valve is arranged at the cooling water outlet.
Further, the rotating shaft is a detachable shaft, and the rotating shafts with different lengths are replaced to adjust the length of the rotating drum extending into the fixed drum.
Further, a filter screen is added at the material outlet.
The invention has the beneficial effects that:
the Taylor-base Ai Teshuang vortex formed by the fixed cylinder and the rotary cylinder is favorable for uniformly dispersing the photocatalytic material in the photocatalytic reactor, so that photons are better received and the photocatalytic reaction is carried out with pollutants, and meanwhile, the one-time treatment capacity of materials can be increased under the condition of double vortex, so that the feasibility is provided for the later amplification application of the device. In addition, the device provided by the invention can also select the treatment mode of the photocatalytic reactor according to different requirements, select a continuous reactor if rapid water purification is needed, and select a batch reactor if sewage is needed to be fully treated. The added cooling system can prevent the light source from being deactivated by too high temperature, and reduce the degradation efficiency of the photocatalytic reaction. The device designed by the invention provides a new thought for the photocatalysis device and helps the further industrialized scale development of the photocatalysis technology.
Drawings
FIG. 1 is a Taylor-library Ai Teshuang vortex photocatalytic system flow diagram;
reference numerals illustrate:
1-a double vortex photocatalytic device; 2-cooling water inflow, 3-sewage tank, 4-feeding pump and 5-clean water tank; 6-a material inlet valve, 7-a cooling water outlet valve, 8-a cooling water inlet valve and 9-a material outlet valve; 11-fixed cylinder, 12-rotary cylinder and 13-annular cylindrical cooling cavity; 14-a rotating shaft, 15-a variable speed motor; 16-xenon lamp, 17-adjustable power supply; 18-cover plate, 19-bracket; 110-material outlet, 111-cooling water inlet, 112-cooling water outlet, 113-material inlet.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings. Meanwhile, the described embodiments are only some embodiments of the present invention, and not all embodiments.
Referring to fig. 1, the double-vortex photocatalytic device provided by the invention comprises a taylor-base Ai Teshuang vortex photocatalytic reactor 1, a material inlet and outlet pipeline and a cooling system. The Taylor-warehouse Ai Teshuang vortex photocatalytic reactor 1 comprises a fixed cylinder 11, a rotary cylinder 12, a rotating shaft 14, a variable speed motor 15 and a light source, wherein the fixed cylinder 11 is an annular cylinder which is surrounded by an inner side wall and an outer side wall and is provided with an upward opening, an annular cavity is used for placing photocatalytic materials and the fixed cylinder 11, the rotary cylinder 12 is of a cylinder structure with a downward opening, and the inner diameter of the rotary cylinder 12 is between the diameters of the inner wall and the outer side wall of the fixed cylinder 11; the cylinder wall of the rotary cylinder 12 is inserted into the annular cavity of the fixed cylinder, the central axes of the fixed cylinder 11 and the rotary cylinder 12 are coincident, and the annular cavity is divided into two annular cavities with communicated lower parts for material reaction. The top of the rotary drum 12 is fixedly connected with a rotary shaft 14, and the rotary shaft 14 is driven by a variable speed motor 15; the light source is arranged in a space surrounded by the inner wall of the fixed cylinder 11; the cooling system is arranged around the light source and used for isolating high temperature transmitted by the light source. The upper part and the lower part of the outer wall of the fixed cylinder 11 are respectively provided with a material inlet 113 and a material outlet 20 which are connected with a material inlet and outlet pipeline. The material inlet 113 is not higher than the height of the inner side wall surface of the fixed cylinder 11 and is connected with the sewage pool 3; the material outlet 20 is connected to the clean water tank 5 on the opposite side to the material inlet 113.
A feed pump 4 and a feed valve 6 are arranged between the material inlet 113 and the sewage tank 3, sewage flows into the feed pump 4 through gravity at the lower end of the sewage tank 3, and is pumped into the photocatalytic reactor 1 through the feed pump 4. A discharge valve 9 is arranged between the material outlet 20 and the clean water tank 5, a water inlet valve 8 is arranged at the position of a cooling system inlet 111, and a water outlet valve 7 is arranged at a cooling water outlet 112. A filter screen is added at the material outlet 20 to prevent photocatalytic particles from flowing into the clean water reservoir 5 with the material.
The fixed cylinder 11, the rotary cylinder 12 and the cooling system surrounding the light source are all made of transparent materials. The light source of the Taylor-base Ai Teshuang vortex photocatalytic reactor adopts a xenon lamp 16, the xenon lamp 16 is connected to an adjustable power supply 17, and the central axes of the xenon lamp 16 and the fixed barrel 11 are coincident.
The cooling system is an annular cylindrical cooling cavity 13 arranged between the inner wall of the fixed cylinder 11 and the light source, and a cooling water inlet 111 and a cooling water outlet 112 are respectively arranged at the lower part and the upper part of the cylindrical cooling cavity 13 and are connected with a cooling water inlet pipeline and a cooling water outlet pipeline. In the embodiment of fig. 1, the annular cylindrical cooling chamber is integral with the stator 11, both sharing the inner wall of the stator 11. The radius of the inner wall of the fixed cylinder 11 is 203mm, the wall thickness is 3mm, the radius of the outer wall is 231mm, and the wall thickness is 3mm.
Preferably, the taylor-library Ai Teshuang vortex photocatalytic reactor 1 is placed in a cylindrical support 19 with a cover plate 18 for preventing the disturbance of the photocatalytic reaction by external natural light.
Further, the rotation shaft 14 may be replaced with a shaft having a different length, and the length of the drum 12 extending into the stator 11 may be adjusted by replacing the rotation shaft 14.
The control valve comprises a material inlet valve 6, a material outlet valve 9, a cooling water inlet valve 8 and a cooling water outlet valve 7, and the flow is controlled and the sewage treatment mode of the reactor is changed by adjusting the control valve. By adjusting the feed and discharge flow rates of the material inlet valve 6 and the material outlet valve 9 to be in the range of 1-20g/ml, a continuous reactor is obtained.
If the water in the clean water tank 5 after the last treatment is still needed to be treated, the water is poured into the sewage tank 3 for secondary treatment after the materials in the sewage tank 3 are treated.
Examples:
10mg/l rhodamine B solution is prepared and used as a treated sewage sample to be placed in the sewage pool 3, and 3-8ωt% CQDs/BiOCl is synthesized and used as a photocatalytic material to be put into the fixed cylinder 11 to be used as suspended particles or fixed on the rotary cylinder 12 to carry out photocatalytic reaction.
And closing the material outlet valve 9, completely injecting rhodamine B into the fixed cylinder 11 through the feed pump 4, and closing the material inlet valve 6 to enable the Taylor-base Ai Teshuang vortex photocatalytic device 1 to be a batch reactor.
The rotating speed of the rotary drum 12 is set to be in the range of 0-400rpm by adjusting a speed change motor 15, the distance extending into the fixed drum 11 is changed to be in the range of 0-5cm by changing a rotating shaft 14, and the speed change motor 15 is supported on the cover plate 18 for supporting the rotary drum 12.
The power of the xenon lamp 16 is set to be 300-320W by adjusting the adjustable power supply 17, and the experimental environment temperature is kept and controlled at 25-50 ℃ by adjusting the cooling water inlet valve 8 and the cooling water outlet valve 7.
Every 10min, the material outlet valve 9 is opened, sampling is carried out in the clean water tank 5, and the photocatalytic degradation efficiency is analyzed until the photocatalytic balance is reached.
The material outlet valve 9 is opened to discharge the water treated in the fixed cylinder 11 into the clean water tank 5, and the rotary cylinder 12, the rotary shaft 14, the variable speed motor 15 and the cover plate 18 are removed and the photocatalytic material remaining in the fixed cylinder 11 is cleaned and recovered.
The double-vortex photocatalysis device can be used as a photocatalysis device and also can be used in the fields of sewage treatment by an adsorption method, synthesis of particles, cell culture and the like.
The examples are preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments, and any obvious modifications, substitutions or variations that can be made by one skilled in the art without departing from the spirit of the present invention are within the scope of the present invention.
Claims (10)
1. A double-vortex photocatalysis device is characterized by comprising a Taylor-base Ai Teshuang vortex photocatalysis reactor (1), a material inlet and outlet pipeline and a cooling system,
the Taylor-warehouse Ai Teshuang vortex photocatalytic reactor (1) comprises a fixed cylinder (11), a rotary cylinder (12), a rotating shaft (14), a variable speed motor (15) and a light source, wherein the fixed cylinder (11) is an annular cylinder which is formed by surrounding an inner side wall and an outer side wall and is provided with an upward opening, an annular cavity is used for placing photocatalytic materials and the fixed cylinder (11), the rotary cylinder (12) is of a cylinder structure with a downward opening, and the inner diameter of the rotary cylinder (12) is between the diameters of the inner wall and the outer side wall of the fixed cylinder (11); the cylinder wall of the rotary cylinder (12) is inserted into the annular cavity of the fixed cylinder, and the annular cavity is divided into two annular cavities with communicated lower parts; the top of the rotary drum (12) is fixedly connected with a rotary shaft (14), and the rotary shaft (14) is driven by a variable-speed motor (15); the light source is arranged in a space surrounded by the inner wall of the fixed cylinder (11);
the cooling system is arranged around the light source, and the upper part and the lower part of the outer wall of the fixed cylinder (11) are respectively provided with a material inlet (113) and a material outlet (20) which are connected with a material inlet and outlet pipeline;
the fixed cylinder (11), the rotary cylinder (12) and the cooling system surrounding the light source are all made of transparent materials.
2. Double vortex photocatalytic device according to claim 1, characterized in that the central axes of the stator (11) and the rotor (12) coincide.
3. The double-vortex photocatalytic device according to claim 1, wherein the cooling system is an annular cylindrical cooling cavity arranged between the inner wall of the fixed cylinder (11) and the light source, and the lower part and the upper part of the cylindrical cooling cavity are respectively provided with a cooling water inlet pipeline and a cooling water outlet pipeline.
4. A twin-vortex photocatalytic device according to claim 3, characterised in that the annular cylindrical cooling chamber is integral with the stator (11), both sharing the inner wall of the stator (11).
5. The double-vortex photocatalytic device according to claim 1, characterized in that the material inlet (113) is not higher than the height of the inner side wall surface of the fixed cylinder (11), and is connected with the sewage tank (3); the material outlet (20) is positioned at the side opposite to the material inlet (113) and is connected with the clean water tank (5).
6. The double-vortex photocatalytic device according to claim 1, characterized in that the light source is a xenon lamp (16), the central axes of the xenon lamp (16) and the fixed cylinder (11) coincide; the xenon lamp (16) is connected with an adjustable power supply (17).
7. The double-vortex photocatalytic device according to claim 1, characterized in that the taylor-library Ai Teshuang vortex photocatalytic reactor (1) is placed inside a cylindrical support (19) with a cover plate (18).
8. The double-vortex photocatalytic device according to claim 1, characterized in that a feed pump (4) and a feed valve (6) are arranged between the material inlet (113) and the sewage tank (3), a discharge valve (9) is arranged between the material outlet (20) and the clean water tank (5), a water inlet valve (8) is arranged at the position of the cooling system inlet (111), and a water outlet valve (7) is arranged at the cooling water outlet (112).
9. Double vortex photocatalytic device according to claim 1, characterized in that the rotation shaft (14) is a detachable shaft, the length of the drum (12) extending into the stator (11) being adjusted by changing the rotation shaft (14) of different length.
10. Double vortex photocatalytic device according to claim 1, characterized in that a filter screen is added at the material outlet (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410158059.7A CN117886394A (en) | 2024-02-04 | 2024-02-04 | Double-vortex photocatalytic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410158059.7A CN117886394A (en) | 2024-02-04 | 2024-02-04 | Double-vortex photocatalytic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117886394A true CN117886394A (en) | 2024-04-16 |
Family
ID=90645708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410158059.7A Pending CN117886394A (en) | 2024-02-04 | 2024-02-04 | Double-vortex photocatalytic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117886394A (en) |
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2024
- 2024-02-04 CN CN202410158059.7A patent/CN117886394A/en active Pending
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