A mobile low-concentration VOCs-MOFs adsorption-photocatalysis synergistic purification device

Abstract

The utility model discloses a kind of mobile low-concentration VOCs-MOFs adsorption-photo catalytic synergic purification device, including device main body and its inside sequentially arranged activated carbon-MOFs adsorption device, centrifugal fan and mobile photocatalytic device. Waste gas first enters activated carbon-MOFs adsorption device, gradient adsorption is carried out by built-in honeycomb activated carbon layer and MOFs material layer;Gas is transported after adsorption, valve can be switched according to need, so that gas is directly discharged after adsorption or enters the mobile photocatalytic device of latter section. The mobile catalytic device is equipped with ultraviolet lamp catalytic furnace, position adjustment is realized by slide rail and mobile slide, and fast connecting pipeline is utilized by magnetic attraction flange, VOCs is completely decomposed into carbon dioxide and water under ultraviolet light catalysis. Device integrates adsorption and catalytic function, flexible switching of adsorption, desorption and purification mode can be realized by valve control, with the characteristics of modularization, mobility, synergic purification efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and more specifically, to a mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device. Background Technology

[0002] In industrial production and certain specific operating environments, the fugitive emission of low concentrations of volatile organic compounds (VOCs) is a common pollution problem. Currently, common methods for treating such waste gases include activated carbon adsorption, catalytic combustion, and photocatalytic oxidation. Among these, activated carbon adsorption equipment is simple, but its adsorption capacity for low-concentration VOCs is limited, and it requires replacement or regeneration after saturation, resulting in high operating costs. Photocatalytic oxidation alone often suffers from insufficient reaction efficiency and short residence time when treating low-concentration, high-volume waste gases. Furthermore, traditional purification devices are mostly fixed installations with complex piping connections, making it difficult to flexibly serve multiple dispersed or intermittent emission sources and hindering rapid deployment and mobile treatment. Utility Model Content

[0003] The main objective of this invention is to provide a mobile low-concentration VOCs-MOFs adsorption-photocatalysis synergistic purification device, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device includes a device body, which is equipped with multiple sets of activated carbon-MOFs adsorption devices for preliminary adsorption of waste gas. The activated carbon-MOFs adsorption devices are equipped with activated carbon-MOFs adsorption boxes, which are equipped with honeycomb activated carbon adsorption layers. Multiple sets of MOFs material adsorption layers are provided on one side of the honeycomb activated carbon adsorption layers. A VOCs concentration sensor is also provided in the activated carbon-MOFs adsorption box (12).

[0006] A centrifugal fan is installed on one side of the activated carbon-MOFs adsorption device;

[0007] A mobile photocatalytic device is installed behind the activated carbon-MOFs adsorption device to oxidize and decompose VOCs into harmless carbon dioxide and water.

[0008] Furthermore, the activated carbon-MOFs adsorption box is equipped with an inlet pipe and an outlet pipe at both ends. The inlet pipe is connected to the main inlet pipe, which is connected to the production equipment. A magnetic flange is installed at the bottom of the main inlet pipe, and a butterfly valve is installed on one side of the magnetic flange. The outlet pipe is connected to the air inlet of the centrifugal fan on one side of the activated carbon-MOFs adsorption device.

[0009] Furthermore, a backflow prevention switching valve is installed between the main air inlet pipe and the air inlet pipe of the activated carbon-MOFs adsorption box.

[0010] Furthermore, a main exhaust pipe is installed at the outlet of the centrifugal fan, and a photocatalytic furnace inlet pipe is installed below the main exhaust pipe. A butterfly valve is installed above the photocatalytic furnace inlet pipe on the main exhaust pipe. A magnetic flange is installed at the bottom of the photocatalytic furnace inlet pipe. A desorption discharge pipe is installed on one side of the photocatalytic furnace inlet pipe, and the two ends of the desorption discharge pipe are connected to the main exhaust pipe and the photocatalytic furnace inlet pipe, respectively.

[0011] Furthermore, butterfly valves are installed in the middle of the inlet pipe and the desorption emission pipe of the photocatalytic furnace.

[0012] Furthermore, the mobile photocatalytic device is equipped with a mobile ultraviolet lamp catalytic furnace, which contains multiple ultraviolet lamp supports, and multiple ultraviolet lamps are evenly arranged in the ultraviolet lamp supports.

[0013] Furthermore, the mobile ultraviolet catalytic furnace is equipped with connecting pipes on both sides, with magnetic flanges at the bottom of the connecting pipes and butterfly valves on one side of the magnetic flanges.

[0014] Furthermore, the bottom of the mobile ultraviolet catalytic furnace is equipped with two parallel slide rails, on which two catalytic furnace moving slides are mounted, and the catalytic furnace moving slides are fixedly connected to the mobile ultraviolet catalytic furnace.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this invention, efficient purification is achieved through synergistic adsorption and photocatalysis, along with a flexible mobile design. Waste gas enters the activated carbon-MOFs adsorption chamber via a main inlet pipe and a backflow prevention switching valve. Low-concentration VOCs are adsorbed using the gradient adsorption of the honeycomb activated carbon adsorption layer and the MOFs material adsorption layer. A VOCs concentration sensor inside the chamber monitors the concentration in real time. When the concentration is ≥200 mg / m³... 3When adsorption is saturated, the airflow direction is controlled by a butterfly valve, and the gas is transported to a mobile UV catalytic furnace by a centrifugal fan. The photocatalytic effect of the UV lamp oxidizes and decomposes VOCs into harmless carbon dioxide and water. The device has a backflow prevention switching valve to prevent backflow of airflow, and a magnetic flange for easy and quick connection and disassembly. The mobile UV catalytic furnace can be flexibly moved to a designated area via a bottom slide rail and a catalytic furnace moving slide to adapt to the VOCs treatment needs of different locations. The overall design takes into account purification efficiency, ease of operation and adaptability to different scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a mobile low-concentration VOCs-MOFs adsorption-photocatalysis synergistic purification device according to the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the activated carbon-MOFs adsorption box of a mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to the present invention.

[0019] Figure 3 This is a schematic diagram of the internal structure of the mobile ultraviolet lamp catalytic furnace of a mobile low-concentration VOCs-MOFs adsorption-photocatalysis synergistic purification device according to the present invention.

[0020] Figure 4 This is a schematic diagram of the slide rail of a mobile low-concentration VOCs-MOFs adsorption-photocatalysis synergistic purification device according to the present invention;

[0021] Figure 5 This is a schematic diagram of the centrifugal fan, photocatalytic furnace inlet pipe, and desorption emission pipe of a mobile low-concentration VOCs-MOFs adsorption-photocatalysis synergistic purification device according to this utility model.

[0022] Figure 6 This is a schematic diagram of the butterfly valve structure of a mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to the present invention.

[0023] Explanation of the labels in the diagram:

[0024] 1. Activated carbon-MOFs adsorption device; 11. Activated carbon-MOFs adsorption box inlet pipe; 12. Activated carbon-MOFs adsorption box; 13. Activated carbon-MOFs adsorption box outlet pipe; 14. Main inlet pipe; 121. Honeycomb activated carbon adsorption layer; 122. MOFs material adsorption layer; 2. Centrifugal fan; 21. Photocatalytic furnace inlet pipe; 22. Desorption emission pipe; 23. Main exhaust pipe; 3. Mobile photocatalytic device; 31. Mobile ultraviolet lamp catalytic furnace; 32. Ultraviolet lamp bracket; 33. Ultraviolet lamp; 34. Catalytic furnace moving slide; 35. Slide rail; 36. Connecting pipe; 37. Magnetic flange; 4. Anti-backflow switching valve; 5. Butterfly valve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Example

[0027] like Figures 1-6 As shown, a mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device includes a main body, in which multiple sets of activated carbon-MOFs adsorption devices 1 are installed for preliminary adsorption of waste gas. Each activated carbon-MOFs adsorption device 1 is equipped with an activated carbon-MOFs adsorption box 12, and a honeycomb activated carbon adsorption layer 121 is installed inside the activated carbon-MOFs adsorption box 121. Multiple sets of MOFs material adsorption layers 122 are installed on one side of the honeycomb activated carbon adsorption layer 121. A VOCs concentration sensor is also installed inside the activated carbon-MOFs adsorption box 12.

[0028] A centrifugal fan 2 is installed on one side of the activated carbon-MOFs adsorption device 1;

[0029] A mobile photocatalytic device 3 is installed behind the activated carbon-MOFs adsorption device 1 to oxidize and decompose VOCs into harmless carbon dioxide and water.

[0030] The activated carbon-MOFs adsorption box 12 is equipped with an inlet pipe 11 and an outlet pipe 13 at both ends. The inlet pipe 11 is connected to the main inlet pipe 14, which is connected to the production equipment. A magnetic flange 37 is provided at the bottom of the main inlet pipe 14, and a butterfly valve 5 is provided on one side of the magnetic flange 37. The outlet pipe 13 is connected to the air inlet of the centrifugal fan 2 on one side of the activated carbon-MOFs adsorption device 1.

[0031] A backflow prevention switching valve 4 is installed between the main air inlet pipe 14 and the air inlet pipe 11 of the activated carbon-MOFs adsorption box.

[0032] A main exhaust pipe 23 is provided on the air outlet of the centrifugal fan 2. A photocatalytic furnace inlet pipe 21 is provided below the main exhaust pipe 23. A butterfly valve 5 is provided above the photocatalytic furnace inlet pipe 21 on the main exhaust pipe 23. A magnetic flange 37 is provided at the bottom of the photocatalytic furnace inlet pipe 21. A desorption discharge pipe 22 is provided on one side of the photocatalytic furnace inlet pipe 21. The two ends of the desorption discharge pipe 22 are connected to the main exhaust pipe 23 and the photocatalytic furnace inlet pipe 21, respectively.

[0033] A butterfly valve 5 is also installed in the middle of the inlet pipe 21 and the desorption discharge pipe 22 of the photocatalytic furnace.

[0034] The mobile photocatalytic device 3 is equipped with a mobile ultraviolet lamp catalytic furnace 31, and multiple ultraviolet lamp supports 32 are installed inside the mobile ultraviolet lamp catalytic furnace 31. Multiple ultraviolet lamps 33 are evenly arranged inside the ultraviolet lamp supports 32.

[0035] The mobile ultraviolet catalytic furnace 31 is equipped with connecting pipes 36 on both sides, and a magnetic flange 37 is provided at the bottom of the connecting pipe 36. A butterfly valve 5 is provided on one side of the magnetic flange 37.

[0036] The bottom of the mobile ultraviolet catalytic furnace 31 is provided with two parallel slide rails 35, and two catalytic furnace moving slides 34 are provided on the slide rails 35. The catalytic furnace moving slides 34 are fixedly connected to the mobile ultraviolet catalytic furnace 31.

[0037] Working principle:

[0038] Low-concentration VOCs waste gas generated by the production equipment first enters the activated carbon-MOFs adsorption box 12 through the main inlet pipe 14 (equipped with a return air switching valve 4), and undergoes gradient adsorption sequentially through the honeycomb activated carbon layer 121 and the MOFs material layer 122. The VOCs concentration sensor inside the box monitors the gas concentration in real time. After adsorption, the gas enters the centrifugal fan 2 through the activated carbon-MOFs adsorption box outlet pipe 13. During the normal adsorption stage (such as within 30 minutes of adsorption), the butterfly valve 5 on the photocatalytic furnace inlet pipe 21 is closed, and the butterfly valve 5 on the desorption discharge pipe 22 is opened, adjusting the opening angle (the higher the temperature and the higher the concentration of waste gas being treated, the smaller the angle, and vice versa). The adsorbed waste gas that meets the standards is directly discharged through the main exhaust pipe 14. When the VOCs concentration sensor detects a concentration ≥200mg / m³, the gas is discharged directly. 3When adsorption is saturated, the butterfly valve 5 of the desorption discharge pipe 22 closes, triggering the mobile ultraviolet catalytic furnace 31 to move to the designated area via the slide rail 35. The main air inlet pipe 14, the photocatalytic furnace air inlet pipe 21, and the connecting pipes 36 on both sides are magnetically fixed by the magnetic flange 37. The butterfly valve 5 of the photocatalytic furnace air inlet pipe 21 and the connecting pipes 36 on both sides opens, and the exhaust gas enters the mobile ultraviolet catalytic furnace 31. Under the photocatalytic action of the ultraviolet lamp 33, it is oxidized and decomposed into harmless carbon dioxide and water, completing the synergistic purification process.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device, comprising a main body of the device, characterized in that: The main body of the device is equipped with multiple sets of activated carbon-MOFs adsorption devices (1) for preliminary adsorption of waste gas. The activated carbon-MOFs adsorption device (1) is equipped with an activated carbon-MOFs adsorption box (12). A honeycomb activated carbon adsorption layer (121) is provided inside the activated carbon-MOFs adsorption box (12). Multiple sets of MOFs material adsorption layers (122) are provided on one side of the honeycomb activated carbon adsorption layer (121). A VOCs concentration sensor is also provided inside the activated carbon-MOFs adsorption box (12). A centrifugal fan (2) is installed on one side of the activated carbon-MOFs adsorption device (1); A mobile photocatalytic device (3) is installed behind the activated carbon-MOFs adsorption device (1) to oxidize and decompose VOCs into harmless carbon dioxide and water.

2. The mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to claim 1, characterized in that: The activated carbon-MOFs adsorption box (12) is provided with an inlet pipe (11) and an outlet pipe (13) at both ends. The inlet pipe (11) is connected to the main inlet pipe (14), which is connected to the production equipment. A magnetic flange (37) is provided at the bottom of the main inlet pipe (14), and a butterfly valve (5) is provided on one side of the magnetic flange (37). The outlet pipe (13) is connected to the air inlet of the centrifugal fan (2) on one side of the activated carbon-MOFs adsorption device (1).

3. The mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to claim 2, characterized in that: The main air inlet pipe (14) is equipped with a backflow prevention switching valve (4) between the production equipment and the air inlet pipe (11) of the activated carbon-MOFs adsorption box.

4. The mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to claim 1, characterized in that: The centrifugal fan (2) is provided with a main exhaust pipe (23) at its outlet. The photocatalytic furnace inlet pipe (21) is provided below the main exhaust pipe (23). The main exhaust pipe (23) is provided with a butterfly valve (5) above the photocatalytic furnace inlet pipe (21). The bottom of the photocatalytic furnace inlet pipe (21) is provided with a magnetic flange (37). The photocatalytic furnace inlet pipe (21) is provided with a desorption discharge pipe (22) on one side. The two ends of the desorption discharge pipe (22) are connected to the main exhaust pipe (23) and the photocatalytic furnace inlet pipe (21) respectively.

5. A mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to claim 4, characterized in that: The photocatalytic furnace inlet pipe (21) and desorption outlet pipe (22) are also equipped with butterfly valves (5) in the middle.

6. The mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to claim 1, characterized in that: The mobile photocatalytic device (3) is equipped with a mobile ultraviolet lamp catalytic furnace (31), and a plurality of ultraviolet lamp supports (32) are provided inside the mobile ultraviolet lamp catalytic furnace (31), and a plurality of ultraviolet lamps (33) are uniformly arranged inside the ultraviolet lamp supports (32).

7. A mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to claim 6, characterized in that: The mobile ultraviolet catalytic furnace (31) is provided with connecting pipes (36) on both sides respectively. A magnetic flange (37) is provided at the bottom of the connecting pipe (36), and a butterfly valve (5) is provided on one side of the magnetic flange (37).

8. A mobile low-concentration VOCs-MOFs adsorption-photocatalytic synergistic purification device according to claim 7, characterized in that: The bottom of the mobile ultraviolet catalytic furnace (31) is provided with two parallel slide rails (35), and two catalytic furnace moving slides (34) are provided on the slide rails (35). The catalytic furnace moving slides (34) are fixedly connected to the mobile ultraviolet catalytic furnace (31).

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