CN212440774U - Bed-type microwave electrodeless ultraviolet catalytic oxidation waste gas treatment device - Google Patents
Bed-type microwave electrodeless ultraviolet catalytic oxidation waste gas treatment device Download PDFInfo
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- CN212440774U CN212440774U CN202020832203.8U CN202020832203U CN212440774U CN 212440774 U CN212440774 U CN 212440774U CN 202020832203 U CN202020832203 U CN 202020832203U CN 212440774 U CN212440774 U CN 212440774U
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Abstract
The utility model belongs to the technical field of protective articles, concretely relates to electrodeless ultraviolet catalytic oxidation exhaust treatment device of bed formula microwave, including intake pipe, vertical cavity, microwave source, blast pipe. The microwave source is arranged on the outer side surface of the vertical cavity, the vertical cavity is used as a main place for catalytic oxidation reaction of waste gas, and the microwave source further comprises a catalyst bed layer and an electrodeless ultraviolet lamp tube. Waste gas enters the vertical cavity from the gas inlet pipe, a catalytic oxidation degradation process is carried out under the action of microwaves, ultraviolet light and a catalyst, and the purified gas is discharged from the gas outlet pipe. The device utilizes the synergistic action of microwave, catalyst and ultraviolet light to carry out catalytic oxidation treatment on VOCs, ozone and other components in the waste gas, so that macromolecular toxic and harmful organic substances in the waste gas are converted into inorganic micromolecules such as carbon dioxide, water and the like.
Description
Technical Field
The utility model belongs to the technical field of waste gas treatment, concretely relates to electrodeless ultraviolet catalytic oxidation exhaust treatment device of bed formula microwave.
Background
Since 40 years ago, with the rapid development of Chinese industrial manufacturing, a large amount of air pollutants are discharged, so far, most production equipment in industries such as printing, spraying, machining and the like in China basically does not collect and treat waste gas, and the national technical standard of treating waste gas generated in production by adopting any method does not exist, so that the harmful waste gas concentration in a production workshop is high, the body health of workers is influenced, and a large amount of waste gas pollutants are directly discharged into the atmosphere to form haze, so that the problem of waste gas treatment is very urgent.
The existing waste gas treatment technology mainly comprises the following steps: the method is simple and easy to implement, but the adsorbent is large in consumption and difficult to recycle, a large amount of industrial solid waste is generated in the later period, the treatment cost is increased, and potential hazards of secondary release of pollutants exist; the catalytic oxidation method is to make organic waste gas undergo oxidation reaction under the action of oxidation catalyst and completely degrade the organic waste gas into inorganic micromolecules such as carbon dioxide, water and the like, but the treatment efficiency is lower because most of the organic waste gas with large air volume and low concentration is discharged in the production process; the biological treatment method is a new technology, and the reactor involves gas, liquid and solid mass transfer and biochemical degradation processes, so the influence factors are many and the control is difficult.
In order to solve the problem, the utility model provides a bed-type microwave electrodeless ultraviolet catalytic oxidation exhaust treatment device utilizes microwave, catalyst and ultraviolet ray three's synergism, carries out catalytic oxidation to compositions such as VOCs, ozone in the waste gas and handles, makes the poisonous harmful organic substance of macromolecule in the waste gas turn into inorganic micromolecules such as carbon dioxide, water.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned background art existence, provide a bed layer formula microwave electrodeless ultraviolet catalytic oxidation exhaust treatment device, the device enables the poisonous harmful organic substance of macromolecule in the waste gas and turns into inorganic micromolecules such as carbon dioxide, water, reaches the purpose of reducing organic pollutant content in the waste gas in a large number.
The utility model provides a technical scheme does: a bed-type microwave electrodeless ultraviolet catalytic oxidation waste gas treatment device comprises an air inlet pipe, a vertical cavity, a microwave source and an exhaust pipe. The microwave source is arranged on the outer side surface of the vertical cavity, the vertical cavity is used as a main place for catalytic oxidation reaction of waste gas, and the microwave source further comprises a catalyst bed layer and an electrodeless ultraviolet lamp tube. Waste gas enters the vertical cavity from the gas inlet pipe, a catalytic oxidation degradation process is carried out under the action of microwaves, ultraviolet light and a catalyst, and the purified gas is discharged from the gas outlet pipe.
As a further aspect of the present invention: the catalyst bed layer and the electrodeless ultraviolet lamp tubes are arranged in the vertical cavity at intervals, and the installation modes of the catalyst bed layer and the electrodeless ultraviolet lamp tubes comprise installation angles and numbers which are vertical to the axis of the vertical cavity, form an acute angle with the axis of the vertical cavity and the like and are changed according to actual requirements.
Furthermore, the catalyst bed comprises a bed frame and a catalyst, the bed frame is made of a material which does not absorb microwaves and can transmit ultraviolet rays, microwave heating bodies are arranged on the periphery of the bed frame, the temperature of the microwave heating bodies rises after absorbing microwave energy, and the catalyst can be heated or regenerated, the catalyst is porous particles loaded with metal oxides such as zinc oxide, manganese oxide and aluminum oxide, the particle size of the catalyst is larger than 5cm, and the phenomenon that the air resistance of the catalyst bed is too large due to too small particle size is avoided, so that the waste gas treatment rate is not favorably improved.
As a further aspect of the present invention: the bottom of the air inlet end of the vertical cavity is also provided with a rectification pore plate for uniformly distributing the waste gas entering the vertical cavity, so that the impact on the central area of the catalyst bed layer is prevented, the service life of the catalyst bed layer is prolonged, and the treatment efficiency of the waste gas is improved.
As a further aspect of the present invention: the microwave source comprises a power supply, a magnetron and a waveguide, and the waveguide is communicated with the cavity of the vertical cavity through a waveguide window and serves as a transmission channel of microwave energy. The number of the microwave sources can be more than one according to the actual working condition.
Furthermore, a microwave transmission controller is arranged between the waveguide window and the vertical cavity, and the microwave transmission controller is a multilayer metal mesh structure device with adjustable mesh diameter. The outer surface of the multilayer metal net is provided with an anti-corrosion protective coating, and the diameter of the meshes of the microwave transmission controller can be dynamically adjusted, so that the microwave energy entering the vertical cavity can be adjusted, and the temperature of the catalyst bed layer can be adjusted.
As a further aspect of the present invention: the first metal net is further installed in the air inlet pipe, the second metal net is further installed in the exhaust pipe, the mesh diameters of the first metal net and the second metal net are smaller than 5mm, and microwave energy can be prevented from leaking into an external environment from the vertical cavity.
Furthermore, an exhaust pipe flange plate is further arranged on the exhaust pipe and used for connecting outer exhaust pipes with different heights.
The utility model discloses a working process does: the power switch is turned on, the microwave source starts to work and transmits microwave energy into the vertical cavity, the electrodeless ultraviolet lamp tube is excited to emit ultraviolet light of 185nm, the catalyst is also heated and activated, waste gas containing organic pollutants enters the vertical cavity through the air inlet tube and is uniformly dispersed to the whole catalyst bed layer through the rectification pore plate, the pollutants in the waste gas are intercepted and adsorbed by the catalyst in the upward movement process, catalytic oxidation reaction is carried out under the action of the ultraviolet light to be decomposed, after multiple contact reactions, pollutants in the waste gas are basically and completely degraded, and the purified waste gas is discharged from the exhaust tube. After the device is used for a certain time, in order to ensure the catalytic activity of a catalyst bed layer, the device needs to be operated for a certain time in a no-load mode, and catalyst particles in the catalyst bed layer are regenerated by adopting a heating regeneration mode.
Drawings
FIG. 1 is the utility model provides a structural schematic diagram of a bed-type microwave electrodeless ultraviolet catalytic oxidation exhaust treatment device
FIG. 2 is the utility model provides a catalyst bed structure sketch map of a bed-type microwave electrodeless ultraviolet catalytic oxidation exhaust treatment device
In the figure: the microwave catalytic converter comprises a gas inlet pipe 1, a vertical cavity 2, a microwave source 3, a catalyst bed 4, an electrodeless ultraviolet lamp tube 5, a catalyst 6, an exhaust pipe 7, an exhaust pipe flange 8, a rectification pore plate 9, a first metal mesh 10, a second metal mesh 11 and a microwave transmission controller 12.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.
In the present specification, the upper, lower, left and right in the drawings are regarded as the upper, lower, left and right of the batch microwave electrodeless ultraviolet wastewater treatment apparatus described in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, which, however, may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of thoroughly and completely disclosing the present invention and fully conveying the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments presented in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
As shown in fig. 1, a bed-type microwave electrodeless ultraviolet catalytic oxidation waste gas treatment device comprises an air inlet pipe 1, a vertical cavity 2, a microwave source 3 and an exhaust pipe 7. The microwave catalytic oxidation reactor comprises an air inlet pipe 1, an exhaust pipe 7, a microwave source 3, a catalyst bed layer 4 and an electrodeless ultraviolet lamp tube 5, wherein the air inlet pipe 1 is communicated with the lower end of a vertical cavity 2, the exhaust pipe 7 is communicated with the top end of the vertical cavity 2, the microwave source 3 is arranged on the outer side surface of the vertical cavity 2, and the vertical cavity 2 is used as a main place for catalytic oxidation reaction of waste gas. Waste gas enters the vertical cavity 2 from the gas inlet pipe 1, a catalytic oxidation degradation process is carried out under the action of microwaves, ultraviolet light and a catalyst, and purified gas is discharged from the gas outlet pipe 7.
The catalyst bed layer 4 and the electrodeless ultraviolet lamp tube 5 are arranged in the vertical cavity 2 at intervals, and the installation modes of the catalyst bed layer 4 and the electrodeless ultraviolet lamp tube 5 comprise that the catalyst bed layer is vertical to the axis of the vertical cavity 2, an acute angle is formed between the catalyst bed layer and the axis of the vertical cavity, and the installation angle and the number are changed according to actual requirements.
Further, the catalyst bed layer 4 comprises a bed layer frame and a catalyst 6, the bed layer frame is made of a material which does not absorb microwaves and can transmit ultraviolet rays, microwave heating bodies are arranged on the periphery of the bed layer frame, the temperature of the microwave heating bodies rises after absorbing microwave energy, the catalyst 6 can be heated or regenerated, the catalyst 6 is porous particles loaded with metal oxides such as zinc oxide, manganese oxide and aluminum oxide, the particle size of the catalyst 6 is larger than 5cm, and the phenomenon that the air resistance of the catalyst bed layer is too large due to too small particle size is avoided, so that the waste gas treatment rate is not favorably improved.
The bottom of the air inlet end of the vertical cavity 2 is also provided with a rectification pore plate 9 for uniformly distributing the waste gas entering the vertical cavity 2, so that the impact on the central area of the catalyst bed layer 4 is prevented, the service life of the catalyst bed layer is prolonged, and the treatment efficiency of the waste gas is improved.
The microwave source 3 comprises a power supply, a magnetron and a waveguide, and the waveguide is communicated with the cavity of the vertical cavity through a waveguide window and is used as a transmission channel of microwave energy. The number of the microwave sources can be more than one according to the actual working condition. A microwave transmission controller 12 is also arranged between the waveguide window and the vertical cavity 2, and the microwave transmission controller 12 is a multilayer metal mesh structure device with adjustable mesh diameter. The outer surface of the multilayer metal net is provided with an anti-corrosion protective coating, and the diameter of the meshes of the microwave transmission controller can be dynamically adjusted, so that the microwave energy entering the vertical cavity can be adjusted, and the temperature of the catalyst bed layer can be adjusted.
A first metal net 10 is further installed in the air inlet pipe 1, a second metal net 11 is further installed in the exhaust pipe 7, and the mesh diameters of the first metal net and the second metal net are smaller than 5mm, so that microwave energy can be prevented from leaking from the vertical cavity to the external environment.
An exhaust pipe flange 8 is further arranged on the exhaust pipe 7 and used for connecting exhaust pipes with different heights.
The utility model discloses a working process does: the power switch is turned on, the microwave source 3 starts to work and transmits microwave energy into the vertical cavity 2, the electrodeless ultraviolet lamp tube 5 is excited to emit ultraviolet light of 185nm, meanwhile, the catalyst 6 is also heated and activated, waste gas containing organic pollutants enters the vertical cavity 2 through the air inlet pipe 1 and is uniformly dispersed to the whole catalyst bed layer 4 through the rectification pore plate 9, the pollutants in the waste gas are intercepted and adsorbed by the catalyst 6 in the upward movement process, catalytic oxidation reaction is carried out under the action of the ultraviolet light to be decomposed, after multiple contact reactions, pollutants in the waste gas are basically and completely degraded, and the purified waste gas is discharged from the exhaust pipe 7. After the device is used for a certain time, in order to ensure the catalytic activity of a catalyst bed layer, the device needs to be operated for a certain time in a no-load mode, and catalyst particles in the catalyst bed layer are regenerated by adopting a heating regeneration mode.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides a bed layer formula microwave electrodeless ultraviolet catalytic oxidation exhaust treatment device, includes intake pipe, vertical cavity, microwave source, blast pipe, its characterized in that: the microwave catalytic oxidation device comprises an air inlet pipe, an exhaust pipe, a microwave source, a catalyst bed layer and an electrodeless ultraviolet lamp tube, wherein the air inlet pipe is communicated with the lower end of the vertical cavity, the exhaust pipe is communicated with the top end of the vertical cavity, the microwave source is installed on the outer side face of the vertical cavity, the vertical cavity is used as a main place for catalytic oxidation reaction of waste gas, the microwave catalytic oxidation device also comprises a catalyst bed layer and an electrodeless ultraviolet lamp tube, waste gas enters the vertical cavity from the air inlet pipe, a catalytic oxidation degradation process is carried out under the action of microwave, ultraviolet.
2. The bed-layer microwave electrodeless ultraviolet catalytic oxidation exhaust gas treatment device of claim 1, characterized in that: the catalyst bed layer and the electrodeless ultraviolet lamp tube are arranged in the vertical cavity at intervals.
3. The bed-layer microwave electrodeless ultraviolet catalytic oxidation exhaust gas treatment device of claim 1, characterized in that: the catalyst bed layer and the electrodeless ultraviolet lamp tube are arranged in a mode that the catalyst bed layer is vertical to the axis of the vertical cavity and forms an acute angle with the axis of the vertical cavity.
4. The bed-layer microwave electrodeless ultraviolet catalytic oxidation exhaust gas treatment device of claim 1, characterized in that: the catalyst bed comprises a bed frame and a catalyst.
5. The bed-layer microwave electrodeless ultraviolet catalytic oxidation exhaust gas treatment device of claim 1, characterized in that: and a rectification pore plate is further installed at the bottom of the air inlet end of the vertical cavity and used for uniformly distributing the waste gas entering the vertical cavity and preventing impact on the central area of the catalyst bed layer.
6. The bed-layer microwave electrodeless ultraviolet catalytic oxidation exhaust gas treatment device of claim 1, characterized in that: the air inlet pipe is internally provided with a first metal net, the exhaust pipe is internally provided with a second metal net, and the diameters of meshes of the first metal net and the second metal net are smaller than 5mm, so that the microwave energy can be prevented from leaking from the vertical cavity to the external environment.
7. The bed-layer microwave electrodeless ultraviolet catalytic oxidation exhaust gas treatment device of claim 1, characterized in that: and an exhaust pipe flange plate is further arranged on the exhaust pipe and is used for connecting outer exhaust pipes with different heights.
8. The bed-layer microwave electrodeless ultraviolet catalytic oxidation exhaust gas treatment device of claim 1, characterized in that: and a microwave transmission controller is also arranged between the microwave source and the vertical cavity and is used for adjusting the microwave energy entering the vertical cavity so as to adjust the temperature of the catalyst bed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020832203.8U CN212440774U (en) | 2020-05-18 | 2020-05-18 | Bed-type microwave electrodeless ultraviolet catalytic oxidation waste gas treatment device |
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| CN202020832203.8U CN212440774U (en) | 2020-05-18 | 2020-05-18 | Bed-type microwave electrodeless ultraviolet catalytic oxidation waste gas treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113413757A (en) * | 2021-07-09 | 2021-09-21 | 陕西青朗万城环保科技有限公司 | Ozone removing method and control system thereof |
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- 2020-05-18 CN CN202020832203.8U patent/CN212440774U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113413757A (en) * | 2021-07-09 | 2021-09-21 | 陕西青朗万城环保科技有限公司 | Ozone removing method and control system thereof |
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