Electrochemistry and photocatalysis combined organic waste gas treatment device

Abstract

The utility model belongs to the field of waste gas treatment, and particularly relates to an electrochemical and photocatalytic organic waste gas treatment device. The device comprises a horizontally-arranged outer pipe, sealing plates are detachably installed at the two ends of the outer pipe, gas conveying pipes are installed on the two sealing plates in a penetrating mode, a diffusion hopper is detachably installed at the end, facing the interior of the outer pipe, of one gas conveying pipe, and an exhaust fan is installed at the outer end of the other gas conveying pipe. An electrochemical filter and a titanium dioxide filter screen are arranged in the outer pipe, a mounting ring is fixed on one side of the titanium dioxide filter screen along the inner wall of the outer pipe, a rotatable rotating frame is arranged on the other side of the titanium dioxide filter screen, a plurality of UV lamps are fixed on the mounting ring and the rotating frame, and a driving assembly is arranged on the outer pipe. Organic waste gas is uniformly diffused into the outer pipe through the diffusion hopper, so that the organic waste gas is uniformly filtered by the electrochemical filter and the titanium dioxide filter screen, the concentration of the organic waste gas is avoided, and the treatment effects of the electrochemical filter and the titanium dioxide filter screen are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of waste gas treatment, especially relate to an electrochemical synergistic photocatalytic organic waste gas treatment device. BACKGROUND

[0002] At present, organic matter containing toxin pollutes the environment very seriously, and such pollutants have the characteristics of large emission, wide pollution area and difficult degradation, and the pollution control and purification treatment of them have been the key research topic of environmental protection workers. The main components of common organic waste gas include benzene series, petroleum hydrocarbon compounds, organic chlorides, freon series, organic ketones, amines, alcohols, ethers, esters, acids and the like. Organic waste gas mainly comes from petrochemical industry, printing and dyeing, papermaking, chemical industry, medicine, food and other industries. In the production process of these industries, a large amount of organic matter will be produced, which is insoluble in water and will be released into the atmosphere to form organic waste gas.

[0003] In the prior art, a Chinese utility model patent with the title of "electrochemical synergistic photocatalytic organic waste gas treatment device" and the publication number of CN215027529U and the publication date of 2021-12-07 is disclosed, which comprises a fixed sleeve, a movable sleeve, a guide plate, a driving wheel, a UV ultraviolet lamp and a support frame structure arranged in sequence, so that the organic waste gas enters the inner cavity of the fixed sleeve and the movable sleeve, and is subjected to multiple filtration treatment of the electrochemical filter, the titanium dioxide filter screen and the activated carbon screen in sequence, which ensures the filtration effect of the organic waste gas and facilitates its replacement or maintenance; however, in the prior art, the organic waste gas treatment device cannot diffuse the organic waste gas after entering the device, which leads to the concentration of the organic waste gas in the filtration area of the electrochemical filter and the titanium dioxide filter screen, the utilization rate of the filtration area of the electrochemical filter and the titanium dioxide filter screen is low, and the filtration effect of the electrochemical filter and the titanium dioxide filter screen on the organic waste gas is reduced. UTILITY MODEL CONTENTS

[0004] The utility model aims at: provide a kind of electrochemical synergistic photocatalytic organic waste gas treatment device, can diffuse the organic waste gas entering the inside of device, improve processing effect.

[0005] The electrochemical synergistic photocatalytic organic waste gas treatment device comprises an outer pipe arranged horizontally, detachable sealing plates are arranged at both ends of the outer pipe, gas conveying pipes are arranged through the two sealing plates and communicate with the inner part of the outer pipe, one of the gas conveying pipes is detachably arranged with a diffusion hopper at one end of the outer pipe, an air extractor is arranged at the outer end of the other gas conveying pipe, an electrochemical filter and a titanium dioxide filter screen are arranged in the outer pipe, a mounting ring is fixed to one side of the titanium dioxide filter screen along the inner wall of the outer pipe, a rotatable rotating frame is arranged on the other side of the titanium dioxide filter screen, a plurality of UV ultraviolet lamps are fixed to the mounting ring and the rotating frame, and a driving assembly for driving the rotating frame to rotate is arranged on the outer pipe.

[0006] Further, the diffusion hopper comprises a plurality of hopper bodies with different inner diameters, the plurality of hopper bodies are combined in a nested manner from large to small and are spaced from each other, and the adjacent hopper bodies are connected and fixed through a plurality of connecting blocks.

[0007] Further, a connecting pipe communicating with the diffusion hopper is fixed to the small hopper opening of the largest hopper body, an external thread is formed on the connecting pipe, and an internal thread threadedly matched with the external thread is formed on the pipe wall of the gas conveying pipe.

[0008] Further, a screen is arranged in the gas conveying pipe where the diffusion hopper is arranged.

[0009] Further, two grating plates are arranged in the outer pipe, and the two grating plates are respectively arranged on the left and right sides of the electrochemical filter.

[0010] Further, the driving assembly comprises a fan, a mounting frame is fixed in the gas conveying pipe where the air extractor is arranged, a rotatable rotating shaft is horizontally arranged through the mounting frame, one end of the rotating shaft is fixed to the rotating frame, and the fan is fixed to the other end of the rotating shaft.

[0011] Further, the inner circular surface of the mounting ring is inclined, and the UV ultraviolet lamp is arranged on the inclined surface.

[0012] Compared with the prior art, the electrochemical synergistic photocatalytic organic waste gas treatment device has the following beneficial effects:

[0013] The air extractor is started to enable the gas inlet hopper to absorb the external organic waste gas, the organic waste gas is transmitted into the diffusion hopper through the left gas conveying pipe, the organic waste gas is uniformly diffused into the outer pipe through the diffusion hopper, the diffused organic waste gas can be uniformly filtered through the electrochemical filter and the titanium dioxide filter screen, so that the concentration of the organic waste gas is avoided, and the treatment effect of the electrochemical filter and the titanium dioxide filter screen is improved; the rotating frame is driven to rotate through the driving assembly, the rotating frame drives all the UV ultraviolet lamps thereon to rotate, the UV ultraviolet lamps continuously change positions, light is irradiated to the deep part of all the filter holes of the titanium dioxide filter screen, the hole wall in the deep part of the filter holes made of titanium dioxide is reacted, and the degradation and purification effect of the titanium dioxide filter screen on the organic waste gas is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a perspective view of the diffusion hopper in the utility model;

[0016] Figure 3 It is a perspective view of the rotating frame in the utility model;

[0017] Figure 4 It is an exploded view of the utility model;

[0018] Names of components in the drawing: 1, air inlet hopper; 2, gas conveying pipe; 3, sealing plate; 4, diffusion hopper; 5, grating plate; 6, electrochemical filter; 7, mounting ring; 8, titanium dioxide filter screen; 9, rotating frame; 10, mounting frame; 11, air extractor; 12, fan; 13, UV ultraviolet light lamp; 14, connecting block; 15, screen. DETAILED DESCRIPTION

[0019] The utility model will be further described below by specific embodiments in combination with the drawings, but it is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the invention.

[0020] EMBODIMENT

[0021] The electrochemical synergistic photocatalytic organic waste gas treatment device described in the embodiment, as shown in Figure 1 and Figure 4 It includes the outer tube arranged horizontally, the outer tube's both ends are detachably installed with the sealing plate 3, two sealing plates 3 are fixed on the both ends of the outer tube through screw, and the both ends of the outer tube are sealed through the sealing plate 3;

[0022] Two sealing plates 3 are provided with the gas conveying pipe 2 communicated with the inner part of the outer tube, as shown in Figure 1 Two sealing plates 3 are provided with the gas conveying pipe 2 communicated with the inner part of the outer tube, as shown in

[0023] One end of one gas conveying pipe 2 towards the inner part of the outer tube is detachably installed with the diffusion hopper 4, as shown in Figure 1 and Figure 2As shown, the diffusion hopper 4 comprises multiple hoppers with different inner diameters. These hoppers are stacked and spaced apart from each other, arranged from largest to smallest. Adjacent hoppers are connected and fixed by several connecting blocks 14. Organic waste gas is introduced into the diffusion hopper 4 from the gas supply pipe 2 on the left side. The organic waste gas then enters the spaces between the different hoppers, causing it to move along these spaces. Figure 1 As shown, the organic waste gas is transported to different positions on the left side of the outer pipe, allowing it to diffuse evenly to the left side of the outer pipe; as... Figure 1 and Figure 2 As shown, a connecting pipe is fixed at the small opening of the largest bucket body on the outer side of the diffuser 4. The connecting pipe has an external thread, and the pipe wall of the gas supply pipe 2 has an internal thread that is threaded to it. Thus, the diffuser 4 is installed on the end of the left gas supply pipe 2 facing the outside pipe through the cooperation of the internal and external threads, which makes it easy to disassemble and assemble.

[0024] The gas delivery pipe 2, which contains the diffuser 4, is equipped with a screen 15; for example... Figure 1 As shown, the screen 15 is installed in the gas supply pipe 2 on the left side by screws. The screen 15 can coarsely screen the organic waste gas to prevent larger particles or impurities from entering the outer pipe and avoid damage to the internal electrochemical filter 6 and titanium dioxide filter 8.

[0025] Another gas supply pipe 2 has an exhaust fan 11 installed at its outer end, such as Figure 1 and Figure 4 As shown, the exhaust fan 11 is installed at the end of the right air supply pipe 2. The exhaust fan 11 is an existing product and will not be described in detail here. The exhaust fan 11 draws air from the right air supply pipe 2 into the outer pipe, creating a negative pressure inside the outer pipe, so that the outside air enters into the outer pipe from the left air inlet 1.

[0026] The outer tube is provided with an electrochemical filter 6 and a titanium dioxide filter screen 8; the electrochemical filter is a device combining electrochemical technology and filtering mechanism, in which an electrolyte solution is located between two electrodes (anode and cathode), and when current passes through the electrodes, the anode usually generates oxidants such as oxygen and chlorine, while the cathode generates reducing agents such as hydrogen, which react with pollutants in the air to decompose or transform them into harmless substances, thereby decomposing and removing the pollutants in the air; the titanium dioxide filter screen 8 is a filtering device made of titanium dioxide (TiO2) material, which is a stable oxide with excellent photocatalytic properties, and under the irradiation of light, TiO2 can generate strong oxidizing ability to decompose and remove harmful substances in the air; in this embodiment, the electrochemical filter 6 and the titanium dioxide filter screen 8 are fixed in the outer tube by screws, and the harmful substances in the organic waste gas in the outer tube are filtered or decomposed after passing through the electrochemical filter 6 and the titanium dioxide filter screen 8, and the filtered gas is discharged from the right gas duct 2 to the outside;

[0027] Two grating plates 5 are arranged in the outer tube, and the two grating plates 5 are respectively located on the left and right sides of the electrochemical filter 6; as shown in Figure 1 After the diffusion hopper 4 discharges the organic waste gas into the outer tube, the flow of air is turbulent, and the left grating plate 5 can cut and guide the air to flow orderly and uniformly to the electrochemical filter 6, so that all filtering areas of the electrochemical filter 6 can filter the organic waste gas, thereby improving the filtering effect; after the electrochemical filter 6 discharges the filtered gas, the gas will pass through the right grating plate 5 again, and the right grating plate 5 can cut and guide the gas to flow orderly and uniformly to the titanium dioxide filter screen 8, so that all filter holes on the titanium dioxide filter screen 8 can degrade and purify the gas;

[0028] One side of the titanium dioxide filter screen 8 is fixed with a mounting ring 7 along the inner wall of the outer tube, as shown in Figure 1As shown, the inner circular surface of the mounting ring 7 is inclined, in this embodiment, the inclined surface is forty-five degrees, all the UV ultraviolet lamps 13 on the mounting ring 7 are evenly installed on the inclined surface in the circumferential direction at equal intervals, so that all the UV ultraviolet lamps 13 on the mounting ring 7 can irradiate light to the titanium dioxide filter screen 8, the mounting ring 7 is fixed along the wall of the outer tube and can allow the organic waste gas to pass through the center, preventing the organic waste gas from being blocked and avoiding the flow of the organic waste gas to be flocculated to affect the degradation and purification of the titanium dioxide filter screen 8; when the UV ultraviolet lamp 13 with a wavelength below 253.7nm irradiates light quantum to the titanium dioxide filter screen 8, the electrons in the valence band of the catalyst are excited by the light quantum and jump to the conduction band to form free electrons, and the titanium dioxide forms a positively charged hole in the valence band, thus forming an electron-hole pair, using the oxidation of the generated hole and the reduction ability of the free electron, the titanium dioxide and the water H2O and O2 in contact with the surface react to produce free radicals with extremely strong oxidizing power, these free radicals can almost decompose and break all the functional groups of organic matter, change the structure of the organic molecules in the waste gas, and change the hydrogen (H) and carbon (C) contained therein into water and carbon dioxide, so that the organic waste gas can be degraded and purified;

[0029] The other side of the titanium dioxide filter screen 8 is provided with a rotatable rotating frame 9, as shown in the figure Figure 3 In this embodiment, the rotating frame 9 includes eight straight rods, all of which are uniformly arranged in the circumferential direction and are fixed at one end, and a plurality of UV ultraviolet lamps 13 are fixed on each straight rod at equal intervals along the length direction;

[0030] Further description, as shown in the figures Figure 1 and Figure 3 In this embodiment, the preferred fan 12 is installed in the air conveying pipe 2 with the exhaust fan 11, the air conveying pipe 2 is fixed with a mounting frame 10, the mounting frame 10 is horizontally penetrated with a rotatable rotating shaft, one end of the rotating shaft is fixed on the rotating frame 9, and the fan 12 is fixed on the other end of the rotating shaft; the fan 12 is located in the right side air conveying pipe 2, when the air in the air conveying pipe 2 is discharged, it will drive the fan 12 to rotate, the fan 12 drives the rotating frame 9 to rotate through the rotating shaft, the rotating frame 9 drives all the UV ultraviolet lamps 13 on it to rotate, the UV ultraviolet lamps 13 change position constantly, thereby irradiating light to the deep part of all the filter holes of the titanium dioxide filter screen 8, making the hole wall in the deep part of the filter hole made of titanium dioxide react, thereby improving the degradation and purification effect of the titanium dioxide filter screen 8 on the organic waste gas, through the rotation of the rotating frame 9 to drive the UV ultraviolet lamps 13 to rotate and irradiate, the number of the UV ultraviolet lamps 13 can be saved for irradiating the deep part of the filter hole, after the number of the UV ultraviolet lamps 13 is saved, the power consumption can be naturally saved; the whole scheme constitutes a driving assembly for driving the rotating frame 9 to rotate; of course, the driving assembly can also adopt a motor, the motor is installed on the right side air conveying pipe 2, and the output end of the motor is fixed at the center of the rotating frame 9.

[0031] In actual use, the exhaust fan 11 is started, the air inlet hopper 1 absorbs the external organic waste gas, the waste gas enters the left gas conveying pipe 2, is transmitted from the gas conveying pipe 2 into the diffusion hopper 4, is uniformly diffused into the outer pipe through the diffusion hopper 4, is filtered and treated through the electrochemical filter 6 and the titanium dioxide filter screen 8 in sequence, and finally is discharged to the outside through the right gas conveying pipe 2. After the organic waste gas is diffused through the diffusion hopper 4, the diffused organic waste gas can uniformly pass through the electrochemical filter 6 and the titanium dioxide filter screen 8 for filtration, so that the concentration of the organic waste gas is avoided, and the treatment effect of the electrochemical filter 6 and the titanium dioxide filter screen is improved.

Claims

1. An electrochemical synergistic photocatalytic organic waste gas treatment device comprising a horizontally arranged outer tube, characterized in that: The outer tube is detachably mounted with sealing plates (3) at both ends, two sealing plates (3) are provided with gas conveying pipes (2) communicated with the inner part of the outer tube, one of the gas conveying pipes (2) is detachably mounted with a diffusion hopper (4) towards one end of the inner part of the outer tube, the outer end of the other gas conveying pipe (2) is mounted with an air extractor (11), the inner part of the outer tube is provided with an electrochemical filter (6) and a titanium dioxide filter screen (8), the titanium dioxide filter screen (8) is fixed with a mounting ring (7) on one side along the inner wall of the outer tube, the other side of the titanium dioxide filter screen (8) is provided with a rotatable rotating frame (9), the mounting ring (7) and the rotating frame (9) are fixed with a plurality of UV ultraviolet light lamps (13), the outer tube is provided with a driving assembly for driving the rotating frame (9) to rotate.

2. The electrochemical synergistic photocatalytic organic waste gas treatment device according to claim 1, characterized in that: The diffusion hopper (4) comprises a plurality of hopper bodies with different inner diameters, the plurality of hopper bodies are nested and combined from large to small and are spaced from each other, and adjacent hopper bodies are connected and fixed through a plurality of connecting blocks (14).

3. The electrochemical synergistic photocatalytic organic waste gas treatment device according to claim 2, characterized in that: The small hopper mouth of the largest hopper body of the diffusion hopper (4) is fixed with a connecting pipe communicated therewith, the connecting pipe is provided with external threads, and the pipe wall of the gas conveying pipe (2) is provided with internal threads in threaded cooperation.

4. The electrochemical synergistic photocatalytic organic waste gas treatment device according to claim 1, characterized in that: The gas conveying pipe (2) in which the diffusion hopper (4) is mounted is provided with a screen (15).

5. The electrochemical synergistic photocatalytic organic waste gas treatment device according to claim 1, characterized in that: The outer tube is provided with two grating plates (5), and the two grating plates (5) are respectively located on the left and right sides of the electrochemical filter (6).

6. The electrochemical synergistic photocatalytic organic waste gas treatment device according to claim 1, characterized in that: The driving assembly comprises a fan (12), the gas conveying pipe (2) mounted with the air extractor (11) is fixed with a mounting frame (10), the mounting frame (10) is horizontally provided with a rotatable rotating shaft, one end of the rotating shaft is fixed on the rotating frame (9), and the fan (12) is fixed on the other end of the rotating shaft.

7. The electrochemical synergistic photocatalytic organic waste gas treatment device according to claim 1, characterized in that: The inner circular surface of the mounting ring (7) is inclined, and the UV ultraviolet light lamp (13) is mounted on the inclined surface.

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