CN207970701U - A waste gas purification device - Google Patents

Abstract

The utility model discloses a waste gas purification device, which comprises a box body, wherein a flow equalizing net, a primary filter, a photocatalytic processor, an active carbon filter layer and a diatom filter layer are sequentially arranged in the box body from an air inlet to an air outlet; the photocatalysis processor comprises at least two groups of microwave electrodeless ultraviolet lamp assemblies, a microwave generator and a honeycomb-shaped catalysis plate, wherein the microwave generator is connected with one end of each microwave electrodeless ultraviolet lamp assembly, and a nano titanium dioxide catalyst layer is coated on the catalysis plate. The utility model discloses a waste gas purification device mutually supports work through primary filter, photocatalysis treater and active carbon filter layer to reach the purpose of effective treatment and purification industrial waste gas, and can not produce secondary pollution, realize nontoxic, innoxious.

Description

A waste gas purification device

technical field

The utility model relates to the field of industrial waste gas treatment, in particular to a waste gas purification device.

Background technique

With the development of science and technology, urbanization is accelerating, and the population is gradually increasing. In order to meet the needs of population development, the scope and scale of various factories are also continuously expanding. The industrial waste gas produced has caused serious pollution to the environment. The human body is healthy and the ecological environment is healthy.

Industrial waste gas refers to the general term for all kinds of polluted gases that are discharged into the air during fuel combustion and production processes in the factory area. Industrial waste gas is mainly carbon disulfide, hydrogen sulfide, nitrogen oxides, carbon monoxide and organic volatile waste gas.

In order to protect the environment and avoid air pollution, industrial waste gas containing harmful gases must be purified before being discharged into the atmosphere, so that the amount or concentration of harmful gases discharged into the atmosphere must not exceed the value specified in the emission standards.

At present, there are multiple purification methods for industrial waste gas, such as: combustion method, absorption method, adsorption method, condensation method, etc. Due to the large amount of industrial waste gas, it is difficult to achieve the purpose of economical and effective purification of industrial waste gas by using the above-mentioned conventional chemical or physical methods, and it will also cause secondary pollution, which cannot meet the emission standards.

Utility model content

In view of this, the exhaust gas purification device provided by the utility model better overcomes the problems and defects of the above-mentioned prior art, and works together through the primary filter, the photocatalytic processor and the activated carbon filter layer to achieve effective The purpose of treating and purifying industrial waste gas, and will not produce secondary pollution, to achieve non-toxic and harmless.

An exhaust gas purification device, comprising a box body, one end of the box body is provided with an air inlet, and the other end is provided with an air outlet port, and the box body is sequentially provided with flow equalizing nets, primary filter, photocatalytic processor, activated carbon filter layer and diatom filter layer; the photocatalytic processor includes at least two groups of microwave electrodeless ultraviolet lamp assemblies, microwave generators and honeycombs connected to one end of the microwave electrodeless ultraviolet lamp assemblies shaped catalytic plate, the catalytic plate is coated with a nano-titanium dioxide catalyst layer; the air inlet is equipped with an air intake fan, and the air outlet is equipped with an exhaust fan.

Further, each group of microwave electrodeless ultraviolet lamp assemblies includes several microwave electrodeless ultraviolet lamp tubes arranged in parallel, and each microwave electrodeless ultraviolet lamp tube is arranged across both sides of the box body.

Further, there are multiple catalytic plates, which are respectively arranged between and on both sides of two adjacent groups of microwave electrodeless ultraviolet lamp assemblies.

Further, a control box is arranged on the front side of the box, and a power supply is arranged in the control box, and the power supply is electrically connected to the microwave electrodeless ultraviolet lamp assembly and the microwave generator.

Further, the control box is provided with a main switch and a power indicator light connected to the power supply.

Further, the control box has a built-in ballast.

Further, a number of cooling holes are provided on the side of the control box.

Further, the primary filter is a HEPA high-efficiency filter.

Further, a number of installation holes are arranged symmetrically on both sides of the box, and the two ends of the microwave electrodeless ultraviolet lamp are installed in the installation holes on both sides of the box.

Further, a support portion is provided at the bottom of the box.

Compared with the prior art, the beneficial effects of the waste gas purification device of the present utility model are:

(1) The exhaust gas purification device provided by the utility model is used to treat volatile organic compound exhaust gas, which includes a flow equalizer, a primary filter, a photocatalytic processor and a diatom filter layer, and passes through the primary filter, photocatalytic processor and The activated carbon filter layers cooperate with each other, so that the industrial waste gas flows through the flow equalization net, filters out tiny particles from the primary filter, and then enters the photocatalytic processor. A large number of microwaves generated by the microwave generator form a microwave field inside the box to excite The microwave electrodeless ultraviolet lamp produces an ultraviolet beam. Under the synergistic effect of the nano-titanium dioxide loaded on the catalytic plate, the molecular bonds of the bacteria in the exhaust gas are cracked by the ultraviolet beam. At the same time, the ultraviolet beam also decomposes oxygen molecules in the air to generate free oxygen, and Oxygen and oxygen molecules are further combined to produce ozone that has a strong oxidation effect on organic matter, decomposing most of the organic matter in the exhaust gas into simple and harmless compounds such as water and carbon dioxide, and then the gas purified by photocatalysis passes through the activated carbon filter layer Further, the adsorbent diatom filter net removes peculiar smell, so as to achieve the purpose of effectively treating and purifying industrial waste gas, and will not produce secondary pollution, and realize non-toxic and harmless.

(2) The exhaust gas purification device provided by the utility model has the characteristics of compact overall structure, small footprint, high purification efficiency and low equipment operation cost.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is the overall schematic diagram of the waste gas purification device of the present utility model;

Fig. 2 is a schematic view of the internal structure of the exhaust gas purification device of the present invention.

Explanation of reference numbers:

1 Exhaust gas purification device

100 cabinets

110 air inlet

111 intake fan

120 Air outlet

121 exhaust fan

130 support part

200 current equalizing network

300 primary filter

400 photocatalytic processor

410 microwave electrodeless ultraviolet lamp group

420 microwave generator

430 catalytic plate

500 activated carbon filter layer

600 diatom filter layer

700 control box

710 power supply

720 main switch

730 Power Indicator

740 cooling holes

Detailed ways

In order to facilitate the understanding of the present invention, the exhaust gas purification device will be described more comprehensively below with reference to the relevant drawings. The preferred embodiment of the exhaust gas cleaning device is given in the accompanying drawings. However, the exhaust gas cleaning device can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the exhaust gas purification device more thorough and comprehensive.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description , rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present utility model, unless otherwise stipulated and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be The internal communication between two elements may be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

Referring to Fig. 1 and Fig. 2, a kind of waste gas purifying device 1 of the utility model embodiment comprises box body 100, and described box body 100 is provided with air inlet 110 at one end, and the other end is provided with air outlet 120; The inlet 110 is equipped with an air intake fan 111 , and the air outlet 120 is equipped with an exhaust fan 121 .

Between the air inlet 110 and the air outlet 120 in the box 100 are sequentially arranged a flow equalizing screen 200 , a primary filter 300 , a photocatalytic processor 400 , an activated carbon filter layer 500 and a diatom filter layer 600 .

The photocatalytic processor 400 includes at least two groups of microwave electrodeless ultraviolet lamp assemblies 410, a microwave generator 420 connected to one end of the microwave electrodeless ultraviolet lamp assembly 410, and a honeycomb catalytic plate 430, which is coated with There is a nano-titanium dioxide catalyst layer.

It should be noted that, the cross section of the box body 100 may be circular or square. The above-mentioned catalytic plate 430 can be a honeycomb aluminum plate, and a large number of pores are evenly distributed on the honeycomb aluminum plate, which has the advantages of light weight, fire prevention, corrosion resistance and environmental protection. The catalytic plate 430 uses a honeycomb aluminum plate, on the one hand, it can save materials and reduce manufacturing costs; on the other hand, it can play the role of uniform air distribution, so that the external exhaust gas can be fully decomposed through the honeycomb aluminum plate. The thickness of the nano titanium dioxide catalyst layer is preferably 100-200nm.

It needs to be understood that in the photocatalytic oxidation reaction, ultraviolet light is irradiated on the nano-carbon dioxide catalyst layer to generate electron-hole pairs, which react with surface-adsorbed water (H ₂ O) and oxygen (O ₂ ) to form oxidatively active Wave hydroxyl radicals (OH ^- ) and superoxide ion radicals (O ₂ ^- , O ^- ). Various waste odor gases such as aldehydes, benzene, ammonia, amines, phenols, nitrogen oxides, sulfides, other hydrocarbons and their VOC organic compounds are reduced to carbon dioxide (CO ₂ ), water (H ₂ O) and other non-toxic and harmless substances.

As a semiconductor photocatalyst, nano-titanium dioxide has strong oxidizing properties, and can effectively decompose some organic substances that are difficult to oxidize by ozone, such as chloroform, carbon tetrachloride, and hexachlorobenzene, and has special significance for organic substances that are difficult to degrade , the effective oxidants for photocatalysis are hydroxyl radicals (OH ^- ) and superoxide ion radicals (O ₂ ^- , O ^- ), whose oxidative properties are higher than those of common ozone, hydrogen peroxide, potassium permanganate, hypochlorous acid, etc. .

Moreover, nano-titanium dioxide is effective for many types of organic substances from hydrocarbons to carboxylic acids, even for atomic organic substances such as halogenated hydrocarbons, dyes, nitrogen-containing organic substances, and organophosphorus pesticides. Can achieve complete purification. In addition, the life of the nano-titanium dioxide catalyst is infinite and does not need to be replaced.

The photocatalytic processor 400 of the utility model can also play the role of disinfection and sterilization while removing peculiar smell, and since there is no additive in the photocatalytic oxidation reaction process, no secondary pollution will be generated.

The working process of the waste gas treatment device of the utility model embodiment is as follows:

First, the waste gas is input into the box body 100 through the air inlet 110 under the action of the air intake fan 111, and first passes through the flow equalizing net 200 to make the input waste gas diffuse evenly, and then the waste gas passes through the primary filter 300 in the box body 100 to dissipate the waste gas The dust particles in the air are separated from the exhaust gas for subsequent treatment. After the primary filtration, the exhaust gas enters the photocatalytic processor 400. A large amount of microwaves generated by the microwave generator 420 in the photocatalytic processor 400 form a microwave field inside the box 100. The microwave field excites the microwave electrodeless ultraviolet lamp to generate an ultraviolet beam. Under the synergistic effect of the nano-titanium dioxide loaded on the plate 430, the molecular bonds of bacteria in the exhaust gas are cracked by the ultraviolet beam. Ozone, which has a strong oxidation effect, decomposes most of the organic substances in the exhaust gas into simple and harmless compounds such as water and carbon dioxide. Further adsorption and purification by the adsorption of activated carbon filter layer 500, and adsorption of diatom filter layer 600 eliminates peculiar smell, and the clean air obtained is discharged under the action of exhaust fan 121 through air outlet 120, thereby realizing non-toxic and harmless.

Preferably, in the embodiment of the present utility model, each group of microwave electrodeless ultraviolet lamp assemblies 410 includes several microwave electrodeless ultraviolet lamp tubes arranged in parallel, and each microwave electrodeless ultraviolet lamp tube straddles the front and rear two sides of the box body 100 side setting.

The microwave electrodeless ultraviolet lamp assemblies 410 can be listed as two groups, three groups, four groups, five groups, six groups, etc., and are arranged in parallel with each other. Preferably, several microwave electrodeless ultraviolet lamp tubes are arranged in parallel and parallel to the catalytic plate.

The microwave electrodeless ultraviolet lamps can be listed as 3, 4, 5, 6, etc., and the microwave electrodeless ultraviolet lamps can be straight or spiral. The distance between two adjacent microwave electrodeless ultraviolet lamps can be set to 12-15cm, of course, the distance between the lamps can also be adjusted according to actual needs. In the embodiment of the present utility model, by arranging the microwave electrodeless ultraviolet lamp tubes of the photocatalytic processor 400 across the air passage between the air inlet 110 and the air outlet 120, and rationalizing the arrangement spacing, it is possible to achieve a relatively small space for volatilization. High degradation efficiency of sexual organic matter.

Preferably, in the embodiment of the present utility model, a number of installation holes are arranged symmetrically on the front and rear sides of the box body 100, and the two ends of the microwave electrodeless ultraviolet lamp are installed on the front and rear sides of the box body 100. side mounting holes. Of course, both ends of several microwave electrodeless ultraviolet lamps can also be installed on the lamp holders, and the lamp holders can be installed on the front and rear sides of the box body 100 .

Preferably, there are multiple catalytic plates, which are respectively arranged between and on both sides of two adjacent groups of microwave electrodeless ultraviolet lamp assemblies 410 .

It should be understood that in the embodiment of the present utility model, a plurality of catalytic plates are arranged, and a catalytic plate is respectively arranged between two adjacent groups of microwave electrodeless ultraviolet lamp assemblies 410, and the microwave electrodeless ultraviolet lamp assemblies 410 are close to the primary filter 300 A catalytic plate is also provided on one side and the side close to the activated carbon filter layer 500, so that the bacteria and organic pollutants in the exhaust gas passing through the photocatalytic processor 400 can be more completely and fully decomposed.

Preferably, in the embodiment of the present utility model, a control box 700 is provided on the front side of the box body 100, and a power supply 710 is provided in the control box 700, and the power supply 710 is connected with the microwave electrodeless ultraviolet lamp assembly 410 and the The microwave generator 420 is electrically connected.

Preferably, the control box 700 is provided with a main switch 720 connected to the power supply 710 and a power indicator light 730, the opening and closing of the power supply 710 is controlled by the main switch 720 on the box door, such as when the main switch 720 is turned on, the power indicator light 730 bright.

Preferably, the control box 700 is detachably installed outside the front side of the box body 100 .

It can be understood that the power supply 710 is used to provide the power supply 710 for the microwave electrodeless ultraviolet lamp and the microwave generator 420 in the photocatalytic processor 400 . The microwave electrodeless ultraviolet lamp assembly 410 is separated from the power supply 710 connection line by installing the control box 700 outside the front side of the box body 100, which can increase the service life of the power supply 710 connection line, and make the manual operation part and the microwave electrodeless ultraviolet lamp The components 410 are relatively spaced apart to provide a relatively safe environment for workers.

Preferably, in the embodiment of the present utility model, the control box 700 is built with a ballast (not shown in the figure).

It should be understood that the ballasts are used to control the number of lamp tubes in groups. Red and green indicator lights may also be provided outside the control box 700 . The two indicator lights are used to indicate the state of the microwave electrodeless ultraviolet lamp tube and the ballast. For example, the two indicator lights are red indicator light and green indicator light respectively. When both the red indicator light and the green indicator light are on, it means that the microwave electrodeless ultraviolet lamp and the ballast are in good condition; when only the green indicator light is on and the red indicator light is off. It means that the microwave electrodeless ultraviolet lamp is damaged and the ballast is intact; when only the red indicator light is on and the green indicator light is off, it means that the microwave electrodeless ultraviolet lamp is intact and the ballast is damaged, so it is convenient to find out whether the microwave electrodeless ultraviolet lamp and the ballast are Damaged, easy to repair and replace accessories.

Preferably, in the embodiment of the present utility model, a plurality of cooling holes 740 are provided on the side of the control box 700 .

It can be understood that, in the embodiment of the utility model, a plurality of heat dissipation holes 740 are arranged on the side of the control box 700, preferably on the left and right sides, so that the heat generated in the control box 700 can be dissipated from the heat dissipation holes 740 in time, effectively The service life of the control box 700 and the ballast in the control box 700 is extended.

Preferably, in the embodiment of the present utility model, the primary filter 300 is a HEPA high-efficiency filter.

HEPA high-efficiency filter, also known as high-efficiency air filter, is a filter that meets HEPA standards. Its characteristic is that air can pass through, but fine particles cannot pass through; The removal efficiency can reach more than 99.97%, and it is the most effective filter medium for pollutants such as smoke, dust and bacteria. HEPA is divided into five materials: PP filter paper, glass fiber, composite PP PET filter paper, melt-blown polyester non-woven fabric and melt-blown glass fiber. HEPA high-efficiency filters have the advantages of large wind resistance, large dust holding capacity, and high filtration accuracy, and can be processed into various sizes and shapes according to needs.

Preferably, in the embodiment of the present utility model, the top of the box body 100 is provided with an opening and a detachable top cover matched with the opening, and a sealing ring is provided around the top cover.

By providing an opening on the top of the box body 100 and a detachable top cover matched with the opening, the installation and maintenance of the photocatalytic processor 400 and other components in the box body 100 are facilitated.

Preferably, a support portion 130 is provided at the bottom of the box body 100, and universal wheels can be installed on the bottom of the support portion 130, so as to facilitate the free movement of the box body 100 and reduce transportation costs.

In summary, compared with the prior art, the beneficial effects of the exhaust gas purification device 1 of the present utility model are:

(1) The waste gas purification device 1 provided by the utility model is used for treating volatile organic compound waste gas, which includes a flow equalizing screen 200 , a primary filter 300 , a photocatalytic processor 400 and a diatom filter layer 600 . The primary filter 300, the photocatalytic processor 400 and the activated carbon filter layer 500 cooperate with each other, so that the industrial waste gas flows through the flow equalizing net 200, and then filters out the tiny particles from the primary filter 300 and enters the photocatalytic processor 400 to catalyze A large number of microwaves generated by the plate 430 form a microwave field inside the box 100, and excite the microwave electrodeless ultraviolet lamp to generate an ultraviolet beam. Under the synergistic effect of the nano-titanium dioxide loaded on the catalytic plate, the molecular bonds of bacteria in the exhaust gas are cracked by the ultraviolet beam. At the same time, the ultraviolet light beam also decomposes oxygen molecules in the air to generate free oxygen, and the free oxygen and oxygen molecules are further combined to generate ozone that has a strong oxidation effect on organic matter, decomposing most of the organic matter in the exhaust gas into water, carbon dioxide, etc. Harmless compounds, and then the gas purified by photocatalysis passes through the activated carbon filter layer 500 and further absorbs the diatom filter to remove odors, so as to achieve the purpose of effectively treating and purifying industrial waste gas, and realizes non-toxic and harmless.

(2) The exhaust gas purification device 1 provided by the utility model has the characteristics of compact overall structure, small footprint, high purification efficiency and low equipment operation cost.

Although the terminology representing the structure is often used above, such as "primary filter", "photocatalytic processor", "activated carbon filter layer", etc., the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A waste gas purification device, comprising a box body, one end of the box body is provided with an air inlet, and the other end is provided with an air outlet port, it is characterized in that: in the box body, between the air inlet port and the air outlet port There are flow equalizing nets, primary filters, photocatalytic processors, activated carbon filter layers and diatom filter layers in sequence; the photocatalytic processor includes at least two groups of microwave electrodeless ultraviolet lamp assemblies, and the microwave electrodeless ultraviolet lamp assemblies A microwave generator connected at one end and a honeycomb catalytic plate, the catalytic plate is coated with a nano-titanium dioxide catalyst layer; the air inlet is equipped with an air intake fan, and the air outlet is equipped with an exhaust fan. 2. The exhaust gas purification device according to claim 1, characterized in that: each group of microwave electrodeless ultraviolet lamp assemblies includes several microwave electrodeless ultraviolet lamp tubes arranged in parallel, and each microwave electrodeless ultraviolet lamp tube spans the box body Set on both sides. 3. The exhaust gas purification device according to claim 1, characterized in that there are multiple catalytic plates, which are respectively arranged between and on both sides of two adjacent groups of microwave electrodeless ultraviolet lamp assemblies. 4. The exhaust gas purification device according to claim 1, characterized in that: a control box is provided on the front side of the box, and a power supply is provided in the control box, and the power supply is connected with the microwave electrodeless ultraviolet lamp assembly and the The microwave generator is electrically connected. 5. The exhaust gas purification device according to claim 4, characterized in that: the control box is provided with a main switch connected to a power source and a power indicator light. 6. The exhaust gas purification device according to claim 4, wherein a ballast is built in the control box. 7. An exhaust gas purification device according to claim 4, characterized in that: the side of the control box is provided with a number of cooling holes. 8. The exhaust gas purification device according to claim 1, characterized in that: the primary filter is a HEPA high-efficiency filter. 9. The exhaust gas purification device according to claim 2, characterized in that: the two sides of the box are symmetrically provided with several installation holes, and the two ends of the microwave electrodeless ultraviolet lamp are installed on both sides of the box in the mounting hole. 10. The exhaust gas purification device according to claim 1, characterized in that: a support portion is provided at the bottom of the box.