CN114849618A - Photocatalytic reactor - Google Patents
Photocatalytic reactor Download PDFInfo
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- CN114849618A CN114849618A CN202210372610.9A CN202210372610A CN114849618A CN 114849618 A CN114849618 A CN 114849618A CN 202210372610 A CN202210372610 A CN 202210372610A CN 114849618 A CN114849618 A CN 114849618A
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 7
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- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
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- 229910052709 silver Inorganic materials 0.000 claims description 3
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- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052724 xenon Inorganic materials 0.000 claims description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 claims description 2
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- 150000005309 metal halides Chemical class 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 2
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- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 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
- 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
-
- 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
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Catalysts (AREA)
Abstract
The invention relates to a photocatalytic reactor, which comprises a shell, wherein the shell is provided with a hollow cavity, one side of the upper end/lower end of the shell is provided with at least one medium inlet, and one side of the lower end/upper end of the shell is provided with at least one medium outlet; the upper end and/or the lower end of the shell are/is at least provided with a through hole for accommodating the lamp holder of the lamp tube, the lamp tube passes through the shell and is connected with the lamp tube fixing seat, the lamp tube fixing seat is fixedly connected with the shell, a sealing ring is arranged between the lamp holder of the lamp tube and the shell, and the light emitting section of the lamp tube is arranged in the cavity; at least one separator is arranged in the cavity along the axial direction and/or the radial direction of the lamp tube, medium passing windows are arranged on the separators or are formed between the outer side wall of the separator and the inner side wall of the cavity, adjacent medium passing windows are arranged in a staggered mode, medium inlets, medium passing windows and medium outlets which are sequentially communicated form a medium flow channel, carriers loaded with catalysts are arranged in at least part of the medium flow channel, and the arrangement of the carriers loaded with the catalysts is arranged around the irradiation surface of the lamp tube.
Description
Technical Field
The invention relates to a reactor, in particular to a photocatalytic reactor.
Background
With the acceleration of industrialization process, the environmental pollution problem tends to be more serious. A large amount of organic and inorganic byproducts aggravate the pollution of air and water, bring far-reaching influence on the ecological system on which the human beings rely to live, and seriously threaten the human health. Although there are many mature pollutant treatment technologies, the search for more efficient and lower cost pollution treatment technologies has been a research hotspot in the current field of pollutant treatment.
The pollutant treatment methods mainly comprise: physical adsorption, chemical oxidation, microbiological treatment and high temperature incineration. The method plays an important role in environmental protection and treatment. However, these techniques have certain disadvantages in different degrees, such as low efficiency, incomplete harmlessness of pollutants, secondary pollution caused by partial treatment methods, and the like.
The photocatalytic oxidation technology is a promising pollutant treatment technology developed by researchers in the process of continuously searching new solutions on the basis of the defects of the conventional pollutant treatment technology, and the principle is that organic matters are gradually oxidized into substances harmless or low harmful to human bodies and the surrounding environment under the synergistic action of light and a catalyst or an oxidant. The operation cost of the photocatalysis technology is low, and the used catalyst is non-toxic, harmless and non-corrosive, can be repeatedly used, and can completely mineralize organic pollutants, so that the photocatalysis technology has the advantages that the traditional high temperature, the conventional catalysis technology and the adsorption technology cannot compare with the traditional high temperature, and is a green environmental management technology with wide application prospect. The photocatalytic technology also needs to be continuously innovated at the basic and application ends so as to develop a system with stronger processing capacity and higher efficiency and energy conservation.
The photocatalysis technology has great potential in microbial killing, and hydroxyl and superoxide ions generated in the photocatalysis process damage DNA structures of microbes such as bacteria and viruses in a medium, so that the microbes such as the bacteria and the viruses in the medium are killed under the condition of not using any chemical medicine, and the aims of disinfection and sterilization are fulfilled.
The interaction between light and catalyst is the basis for the exertion of the photocatalytic effect. The related research and application development mainly focuses on catalytic materials, and the catalytic materials based on ultraviolet light excitation with higher photon energy are always the focus of attention, while the research and development of catalytic materials excited by visible light are the most expected and the most urgent key problems to be solved. The latter, although some progress has been made, is limited by the optical properties of visible light, traditional photocatalytic materials, such as titanium dioxide (TiO), which has been more studied 2 ) Zinc oxide (ZnO) and zinc sulfide (ZnS)) The wide-bandgap photocatalyst is only excited by ultraviolet light, so that the related research is relatively slow in progress.
The research on the applicability of light sources and catalytic materials is particularly important at the present stage based on the prior art, and in order to improve the treatment efficiency of a photocatalytic reaction system, the way of loading a catalyst on a pollution-cleaning carrier is more widely adopted, and some pollution-cleaning carriers are found to be capable of effectively improving the catalytic efficiency of the catalyst. Among them, the aluminum honeycomb nano catalytic material and the biochar honeycomb nano catalytic material are the most commonly used catalyst supporting forms. However, for the honeycomb carrier, although the thickness of the commonly used carrier is not large, the effective irradiation of light rays at different parts in the honeycomb cannot be met, and therefore the actual catalytic effect of the honeycomb material is greatly influenced. Although the surface area of the particle-like pollution-cleaning catalyst load carrier is increased, the photocatalytic reaction cannot be started due to lack of illumination of the internal gaps, and the catalytic effect of the material is greatly weakened. Therefore, it is an effective way to solve the above drawbacks to improve the loading mode or the light irradiation mode of the catalytic material to increase the contact area and the contact time between the gas-phase or liquid-phase medium to be treated and the catalytic material, and to actually receive higher light irradiation coverage.
In order to solve the problem that the catalyst distribution material is insufficient in receiving effective illumination and improve the treatment effect, in the design of a photocatalytic reaction system, increasing the number of lamp tubes and changing the distribution mode of the catalyst are one of the means for improving the catalytic efficiency. However, there is still a large gap between the matching of the number of lamps with the catalyst and the practical utilization rate. How to improve the treatment effect and control the energy consumption is the key point of research and development.
Disclosure of Invention
The purpose of the invention is as follows: the invention improves the problems in the prior art, namely, the invention discloses a photocatalytic reactor.
The photocatalytic reactor surrounds the lamp tube at the middle part, separates the inner space of the reactor and reasonably arranges the catalyst layer to form a continuous medium flow channel, the fixed catalyst layer is arranged on the medium flow channel, and the arranged catalyst layer is arranged by taking the lamp tube as the center, so that the catalyst layer can fully receive the effective irradiation of the light source at the middle part.
The medium passing through the reactor can repeatedly pass through the catalyst layer for many times, thereby realizing more sufficient catalytic treatment on the medium. Meanwhile, the inner side wall of the reactor cavity and the surface of the separation material are at least partially processed by surface mirror aluminum or mirror silver or an aluminum reflecting film or a surface aluminized reflecting layer or a surface silvered reflecting layer, and the like, so that the catalytic material can better receive effective irradiation of a light source, and the irradiation coverage and the irradiation intensity are improved.
The photocatalytic reactor disclosed by the invention can improve the energy efficiency of the photocatalytic reactor and improve the catalytic treatment effect and uniformity.
The technical scheme is as follows: a photocatalytic reactor comprises a shell, wherein the shell is provided with a hollow cavity, one side of the upper end/lower end of the shell is provided with at least one medium inlet, and one side of the lower end/upper end of the shell is provided with at least one medium outlet;
the upper end and/or the lower end of the shell are/is at least provided with a through hole for accommodating a lamp holder of the lamp tube, the lamp tube penetrates through the through hole on the shell and is connected with a lamp tube fixing seat, the lamp tube fixing seat is fixedly connected with the shell, a sealing ring is arranged between the lamp holder of the lamp tube and the shell, and the light-emitting section of the lamp tube is arranged in the cavity;
at least one separator is arranged in the cavity along the axial direction and/or the radial direction of the lamp tube, medium passing windows are arranged on the separators or medium passing windows are formed between the outer side wall of the separator and the inner side wall of the cavity, adjacent medium passing windows are arranged in a staggered mode, a medium inlet, a medium passing window and a medium outlet which are sequentially communicated form a medium flow channel, carriers loaded with catalysts are arranged in at least part of the medium flow channel, and the arrangement of the carriers loaded with the catalysts is arranged around the irradiation surface of the lamp tube.
Further, a plurality of lamps are included, the plurality of lamps are arranged in series, or
A plurality of lamps are arranged in parallel, or
The multiple lamp tubes are arranged in series or in parallel.
Further, the shape of the lamp tube is one of a single straight tube shape, a U shape, an M shape, a round shape, a disc shape, a Chinese character 'hui' shape, an arc shape, an N shape, an H shape and a multi-channel bending shape.
Further, the type of the lamp tube is one of a medium-pressure mercury lamp, a low-pressure mercury lamp, a xenon lamp, a sodium lamp, a metal halide lamp, an excimer lamp, and an LED lamp.
Further, the catalyst in the catalyst-supporting carrier is one or more of titanium dioxide, zinc oxide, tin oxide, zirconium dioxide and cadmium sulfide.
Further, the shape of the catalyst-supporting carrier in the catalyst-supporting carriers is one of honeycomb, bubble bath, mesh and plate layer.
Further, the material of the catalyst-supporting carrier in the catalyst-supporting carrier is at least one of the following:
active carbon, diatomite, fluorite, zeolite, pumice, sea sand, expanded perlite, clay, kaolin, nano silicon dioxide, nano aluminum oxide, ceramic, layered graphite and foamed plastic.
Furthermore, the inner side surface of the cavity and the surface of the separator are at least partially provided with a mirror aluminum plate, a mirror silver plate, an aluminum reflecting film layer, an aluminum-plated reflecting layer or a silver-plated reflecting layer.
Furthermore, the cavity is in the shape of one of a cuboid, a cylinder, a prism and a circular truncated cone.
Further, the shape of the separator is one of a sheet shape, an arc shape, and a diamond shape.
Furthermore, a quartz glass sleeve is sleeved outside the lamp tube.
Further, the electrode ends of the lamp tubes are arranged outside the cavity, or
The electrode end of the lamp tube is arranged in the cavity after insulation and isolation treatment.
Furthermore, the lamp holder of the lamp tube is clamped with the lamp holder fixing seat, and the lamp holder of the lamp tube is externally connected with an electronic ballast.
Further, the device also comprises at least one fan for driving the gaseous medium to pass through, wherein the fan is communicated with the medium inlet and/or the medium outlet, or
And the device also comprises at least one pump for driving the liquid medium to pass, wherein the pump is communicated with the medium inlet and/or the medium outlet.
Has the advantages that: the invention discloses a photocatalytic reactor which has the following beneficial effects:
1. the reactor is divided into relatively independent cavities which can sequentially flow, gas-phase or liquid-phase media to be treated sequentially pass through different cavities and pass forward, the passing distance of the media to be treated through the cavities can be prolonged by the design, and the time for the media to be treated in a limited space can be greatly prolonged;
2. the catalyst-loaded carrier is arranged on a medium passing passage in different chambers, and in this way, the medium repeatedly passes through the catalyst-loaded carrier, so that the times of the medium passing through the catalyst-loaded carrier can be increased, and the treatment efficiency of the reactor is greatly improved;
3. the catalyst-loaded carrier is distributed around the lamp tube in the axial direction and/or the radial direction, so that the effective illumination can be received to the maximum extent, the intensity of the effective illumination received by the catalyst-loaded carrier is high, the catalytic efficiency is improved, and the catalyst-loaded carrier can play a relatively high-efficiency catalytic effect in the mode;
4. the separation design can also improve the uniformity of the medium subjected to photocatalytic treatment;
5. can reduce the volume of the reactor, reduce energy consumption and cost and is environment-friendly.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a photocatalytic reactor according to the present disclosure.
FIG. 2 is a schematic medium flow diagram of the photocatalytic reactor shown in FIG. 1.
FIG. 3 is a schematic diagram of a photocatalytic reactor according to yet another embodiment of the present disclosure.
FIG. 4 is a schematic medium flow diagram of the photocatalytic reactor shown in FIG. 3.
FIG. 5 is a schematic diagram of another embodiment of a photocatalytic reactor as disclosed herein.
FIG. 6 is a schematic medium flow diagram of the photocatalytic reactor shown in FIG. 5.
FIG. 7 is a schematic diagram of another embodiment of a photocatalytic reactor as disclosed herein.
FIG. 8 is a schematic diagram of another embodiment of a photocatalytic reactor as disclosed herein.
FIG. 9 is a schematic medium flow diagram of the photocatalytic reactor shown in FIG. 8.
FIG. 10 is a schematic diagram of another embodiment of a photocatalytic reactor as disclosed herein.
Wherein:
1-Chamber 2-media Inlet
3-medium outlet 4-lamp tube
5-lamp tube holder 6-sealing ring
7-Quartz glass Sleeve 8-spacer
9-catalyst-supporting carrier 10-medium passage window
11-medium flow channel
The specific implementation mode is as follows:
the following describes in detail specific embodiments of the present invention.
Example 1
As shown in fig. 1 and fig. 2, a photocatalytic reactor comprises a shell, wherein the shell is provided with a hollow cavity 1, one side of the lower end of the shell is provided with a medium inlet 2, and one side of the upper end of the shell is provided with a medium outlet 3;
the upper end and the lower end of the shell are respectively provided with a through hole for accommodating a lamp holder 5 of a lamp tube, the lamp tube 4 passes through the through hole on the shell and is connected with a lamp tube fixing seat, the lamp tube fixing seat is fixedly connected with the shell, a sealing ring 6 is arranged between the lamp holder 5 of the lamp tube and the shell, and the light-emitting section of the lamp tube 4 is arranged in the cavity 1;
four separating pieces 8 are arranged in the cavity 1 along the axial direction of the lamp tube 4, medium passing windows 10 are arranged on the separating pieces 8, adjacent medium passing windows 10 are distributed in a staggered mode, a medium inlet 2, the medium passing windows 10 and a medium outlet 3 which are communicated in sequence form a medium flow channel 11, a carrier 9 loaded with a catalyst is distributed in at least part of the medium flow channel 11, and the distribution of the carrier 9 loaded with the catalyst is distributed around the irradiation surface of the lamp tube 4.
Further, the shape of the lamp tube 4 is a single straight tube shape.
Further, the lamp tube 4 is of the type of a medium pressure mercury lamp.
Further, the catalyst in the catalyst-supporting carrier 9 is titania.
Further, the catalyst-supporting carrier in the catalyst-supporting carrier 9 has a plate-like shape.
Further, the material of the catalyst support in the catalyst support 9 is activated carbon.
Furthermore, mirror aluminum plates are arranged on the inner side surface of the cavity 1 and the surface of the separator 8 at least partially.
Further, the cavity 1 is cylindrical in shape.
Further, the separator 8 is shaped like a sheet.
Furthermore, a quartz glass sleeve 7 is sleeved outside the lamp tube 4.
Further, the electrode ends of the lamp tube 4 are arranged outside the cavity 1.
Furthermore, the lamp tube lamp holder 5 is clamped with the lamp tube fixing seat, and the lamp tube lamp holder 5 is externally connected with an electronic ballast.
Further, the device also comprises at least one fan for driving the gaseous medium to pass through, and the fan is communicated with the medium inlet 2 and/or the medium outlet 3.
The treatment process comprises the following steps: gas phase or liquid phase medium to be treated enters the photocatalytic reactor through the medium inlet 2, the photocatalytic reactor surrounds the lamp tube 4 and is divided into at least two relatively independent chambers through which the medium can sequentially pass (the chambers are communicated in a sequential overflowing mode), a medium passing window 10 is arranged at the separation position between the sequentially communicated chambers and is used for the medium to pass through, a carrier 9 for loading the catalyst is distributed in a medium flow channel 11 in the chamber, and the distributed carrier 9 for loading the catalyst is distributed around the irradiation surface of the lamp tube 4, so that the carrier can be fully and effectively irradiated by the lamp tube 4.
Example 2
As shown in fig. 3 and 4, a photocatalytic reactor comprises a shell, wherein the shell is provided with a hollow cavity 1, one side of the lower end of the shell is provided with a medium inlet 2, and one side of the lower end of the shell is provided with a medium outlet 3;
the upper end and the lower end of the shell are provided with through holes for accommodating lamp tube lamp caps 5, the lamp tubes 4 penetrate through the through holes on the shell and are connected with lamp tube fixing seats, the lamp tube fixing seats are fixedly connected with the shell, a sealing ring 6 is arranged between the lamp tube lamp caps 5 and the shell, and the light-emitting sections of the lamp tubes 4 are arranged in the cavity 1;
a partition 8 is arranged in the cavity 1 along the radial direction of the lamp tube 4, a medium passing window 10 is arranged on the partition 8, a medium inlet 2, the medium passing window 10 and a medium outlet 3 which are sequentially communicated form a medium flow channel 11, a carrier 9 loaded with a catalyst is arranged in at least part of the medium flow channel 11, and the arrangement of the carrier 9 loaded with the catalyst is distributed around the irradiation surface of the lamp tube 4.
Further, the shape of the lamp tube 4 is a single straight tube shape.
Further, the lamp tube 4 is of the type of a low-pressure mercury lamp.
Further, the catalyst in the catalyst-supporting carrier 9 is zinc oxide.
Further, the catalyst-supporting carrier of the catalyst-supporting carrier 9 has a bubble shower shape.
Further, the material of the catalyst-supporting carrier in the catalyst-supporting carrier 9 is a foam.
Furthermore, the inner side surface of the cavity 1 and the surface of the separator 8 are at least partially provided with a mirror silver plate.
Further, the cavity 1 is cylindrical in shape.
Further, the separator 8 is shaped like a sheet.
Furthermore, a quartz glass sleeve 7 is sleeved outside the lamp tube 4.
Furthermore, the electrode end of the lamp tube 4 is disposed in the cavity 1 after insulation and isolation treatment.
Furthermore, the lamp tube lamp holder 5 is clamped with the lamp tube fixing seat, and the lamp tube lamp holder 5 is externally connected with an electronic ballast.
Further, the device also comprises at least one fan for driving the gaseous medium to pass through, and the fan is communicated with the medium inlet 2 and/or the medium outlet 3.
Example 3
As shown in fig. 5 and 6, embodiment 3 is substantially the same as embodiment 2 except that:
1. two medium inlets 2 are arranged on one side of the lower end of the shell, and two medium outlets 3 are arranged on one side of the upper end of the shell;
2. a partition member 8 is provided in the chamber 1 along each of the axial and radial directions of the lamp tube 4.
Example 4
As shown in fig. 7, example 4 is substantially the same as example 2 except that:
1. two separators 8 are arranged in the cavity 1 along the radial direction of the lamp tube 4;
2. six separators 8 are arranged in the cavity 1 along the axial direction of the lamp tube 4.
Example 5
As shown in fig. 8 and 9, example 5 is substantially the same as example 3 except that the cavity 1 has a rectangular parallelepiped shape.
Example 6
As shown in fig. 10, example 6 is substantially the same as example 5 except that the cavity 1 has a rectangular parallelepiped shape.
Example 7
A photocatalytic reactor comprises a shell, wherein the shell is provided with a hollow cavity 1, one side of the upper end of the shell is provided with at least one medium inlet 2, and one side of the lower end of the shell is provided with at least one medium outlet 3;
the upper end of the shell is provided with a plurality of through holes for accommodating lamp tube lamp caps 5, the lamp tubes 4 penetrate through the through holes on the shell and are connected with lamp tube fixing seats, the lamp tube fixing seats are fixedly connected with the shell, a sealing ring 6 is arranged between the lamp tube lamp caps 5 and the shell, and the light-emitting sections of the lamp tubes 4 are arranged in the cavity 1;
a separator 8 is arranged in the cavity 1 along the axial direction of the lamp tube 4, a medium passing window 10 is formed between the outer side wall of the separator 8 and the inner side wall of the cavity 1, a medium inlet 2, the medium passing window 10 and a medium outlet 3 which are sequentially communicated form a medium flow channel 11, a carrier 9 loaded with a catalyst is arranged in at least part of the medium flow channel 11, and the arrangement of the carrier 9 loaded with the catalyst is distributed around the irradiation surface of the lamp tube 4.
Further, a plurality of lamps 4 are included, and the plurality of lamps 4 are arranged in series.
Further, the shape of the lamp tube 4 is a U-shape.
Further, the lamp tube 4 is of the type of a medium pressure mercury lamp.
Further, the catalyst in the catalyst-supporting carrier 9 is titania.
Further, the catalyst-supporting carrier in the catalyst-supporting carrier 9 has a honeycomb shape.
Further, the material of the catalyst carrier in the catalyst carrier 9 is diatomaceous earth.
Furthermore, the inner side surface of the cavity 1 and the surface of the separator 8 are at least partially provided with an aluminum reflective film layer.
Further, the cavity 1 is shaped as a diamond column.
Further, the shape of the partitioning member 8 is a circular arc.
Furthermore, a quartz glass sleeve 7 is sleeved outside the lamp tube 4.
Further, the electrode ends of the lamp tube 4 are arranged outside the cavity 1.
Furthermore, the lamp tube lamp holder 5 is clamped with the lamp tube fixing seat, and the lamp tube lamp holder 5 is externally connected with an electronic ballast.
Further, at least one pump for driving the liquid medium to pass is also included, and the pump is communicated with the medium inlet 2 and/or the medium outlet 3.
Example 8
Substantially the same as example 7, except that: the plurality of lamps 4 are arranged in parallel.
Example 9
Substantially the same as example 7, except that: the plurality of lamp tubes 4 are arranged in series or in parallel.
Examples 10 to 17
Substantially the same as in example 7, except that the shape and type of the lamp vessel 4 are different:
| shape of lamp tube | Type of lamp tube | |
| Example 10 | M shape | Low-pressure mercury lamp |
| Example 11 | Circular shape | Xenon lamp |
| Example 12 | Disc shape | Sodium lamp |
| Example 13 | Chinese character 'hui' shape | Metal halideChemical lamp |
| Example 14 | Arc shape | Excimer lamp |
| Example 15 | N shape | LED lamp |
| Example 16 | H shape | LED lamp |
| Example 17 | Multiple bend shapes | LED lamp |
Examples 18 to 23
Substantially the same as example 1, except that: the catalyst type and the shape of the catalyst support are different:
examples 24 to 36
Substantially the same as example 1, except that: the material of the catalyst carrier is different
| Material of catalyst carrier | |
| Example 24 | Layered graphite |
| Example 25 | Ceramic material |
| Example 26 | Nano aluminium oxide |
| Example 27 | Nano silicon dioxide |
| Example 28 | Kaolin clay |
| Example 29 | Clay clay |
| Example 30 | Expanded perlite |
| Example 31 | Sea sand |
| Example 32 | Pumice stone |
| Example 33 | Zeolite |
| Example 34 | Fluorite |
| Example 35 | Diatomite |
| Example 36 | Foamed plastic |
Example 37
Substantially the same as example 1, except that: the inner side surface of the cavity 1 and the surface of the separator 8 are at least partially provided with mirror silver plates.
Example 38
Is substantially the same as example 1 except that: the inner side surface of the cavity 1 and the surface of the separator 8 are at least partially provided with an aluminum reflective film layer.
Example 39
Substantially the same as example 1, except that: the inner side surface of the cavity 1 and the surface of the separator 8 are at least partially provided with an aluminized reflecting layer.
Example 40
Is substantially the same as example 1 except that: the inner side surface of the cavity 1 and the surface of the separator 8 are at least partially provided with silver-plated reflecting layers.
Example 41
Substantially the same as example 2, except that: the shape of the partition 8 is circular arc.
Example 42
Substantially the same as example 4, except that: the shape of the partition 8 is a diamond shape.
Example 43
Is substantially the same as example 1 except that: the cavity 1 is in the shape of a circular truncated cone.
The embodiments of the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A photocatalytic reactor is characterized by comprising a shell, wherein the shell is provided with a hollow cavity, one side of the upper end/lower end of the shell is provided with at least one medium inlet, and one side of the lower end/upper end of the shell is provided with at least one medium outlet;
the upper end and/or the lower end of the shell are/is at least provided with a through hole for accommodating a lamp holder of the lamp tube, the lamp tube penetrates through the through hole on the shell and is connected with a lamp tube fixing seat, the lamp tube fixing seat is fixedly connected with the shell, a sealing ring is arranged between the lamp holder of the lamp tube and the shell, and the light-emitting section of the lamp tube is arranged in the cavity;
at least one separator is arranged in the cavity along the axial direction and/or the radial direction of the lamp tube, medium passing windows are arranged on the separators or medium passing windows are formed between the outer side wall of the separator and the inner side wall of the cavity, adjacent medium passing windows are arranged in a staggered mode, a medium inlet, a medium passing window and a medium outlet which are sequentially communicated form a medium flow channel, carriers loaded with catalysts are arranged in at least part of the medium flow channel, and the arrangement of the carriers loaded with the catalysts is arranged around the irradiation surface of the lamp tube.
2. A photocatalytic reactor as set forth in claim 1, characterized by comprising a plurality of lamps arranged in series, or
A plurality of lamps are arranged in parallel, or
The multiple lamp tubes are arranged in series or in parallel.
3. The photocatalytic reactor as set forth in claim 1, wherein the lamp tube has a shape of one of a single straight tube, a U-shape, an M-shape, a circular shape, a disc-shape, a zigzag shape, an arc shape, an N-shape, an H-shape, and a multi-bend shape;
the lamp tube is one of a medium-pressure mercury lamp, a low-pressure mercury lamp, a xenon lamp, a sodium lamp, a metal halide lamp, an excimer lamp and an LED lamp.
4. A photocatalytic reactor as in claim 1 wherein the catalyst in the catalyst-supporting carrier is one or more of titanium dioxide, zinc oxide, tin oxide, zirconium dioxide, cadmium sulfide.
5. A photocatalytic reactor as set forth in claim 1, wherein the catalyst-supporting carrier of the catalyst-supporting carriers has a shape of one of a honeycomb shape, a bubble bath shape, a mesh shape, and a plate shape.
6. A photocatalytic reactor as set forth in claim 5, characterized in that the material of the catalyst-supporting carrier in the catalyst-supporting carrier is at least one of the following:
active carbon, diatomite, fluorite, zeolite, pumice, sea sand, expanded perlite, clay, kaolin, nano silicon dioxide, nano aluminum oxide, ceramic, layered graphite and foamed plastic.
7. A photocatalytic reactor as set forth in claim 1, characterized in that the inner side of the chamber and the surface of the partition are at least partially provided with a mirror aluminum plate or a mirror silver plate or an aluminum reflective film layer or an aluminum reflective layer or a silver plated reflective layer.
8. The photocatalytic reactor as set forth in claim 1, wherein the cavity has a shape of one of a rectangular parallelepiped, a cylinder, a prism, and a circular truncated cone;
the shape of the separator is one of a sheet shape, an arc shape and a diamond shape.
9. A photocatalytic reactor as recited in claim 1, wherein the outside of the lamp tube is further covered with a quartz glass sleeve;
the electrode ends of the lamp tubes are arranged outside the cavity, or
The electrode end of the lamp tube is arranged in the cavity after insulation and isolation treatment.
10. A photocatalytic reactor as set forth in claim 1 further comprising at least one fan for driving the gaseous medium through, said fan being in communication with said medium inlet and/or medium outlet, or
And the device also comprises at least one pump for driving the liquid medium to pass, wherein the pump is communicated with the medium inlet and/or the medium outlet.
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