VOCs removal device for VOCs waste gas treatment technology

Abstract

The utility model relates to the technical field of VOCs waste gas treatment, in particular to a VOCs removal device for the VOCs waste gas treatment technology, which comprises a removal device box and a frame body, the top of the removal device box is provided with a gas inlet, the bottom of the removal device box is provided with a gas outlet, a detachable activated carbon filter box body is arranged in the removal device box, and the frame body is provided with a gas inlet and a gas outlet. An activated carbon filter plate is arranged in the activated carbon filter box body, the top of one side of the frame body is connected with a circulating fan, one side of the circulating fan is connected with an upper connecting pipe, and the other side of the circulating fan is connected with a lower connecting pipe. And after the VOCs waste gas is monitored, the gas can be guided into the removal device box again to be treated again, so that the waste gas treatment efficiency is improved, and the device is very practical.

Description

Technical Field

[0001] The utility model relates to the technical field of VOCs waste gas treatment, in particular to a VOCs removal device used in VOCs waste gas treatment technology. Background Art

[0002] Among the treatment processes of VOCs waste gas treatment technology, the activated carbon adsorption method is suitable for the purification of VOCs with low water and dust content and medium and low concentrations. It has a high removal rate and is easy to automatically control. Therefore, it is also the most widely used and simple treatment process. Its more typical "primary adsorption-desorption" method is an example: the mixed gas containing VOCs is first passed through a pretreatment system (such as condensation, absorption, and filtration) to remove water vapor, corrosive substances and particulate matter in the waste gas to prevent corrosion of the terminal equipment and blockage of the adsorbent, while reducing the terminal load. The pressure is adjusted by a pressure regulator and then enters the adsorption bed for adsorption purification. The pollutants in the waste gas will be adsorbed on the activated carbon in the adsorption bed. After the purified gas meets the standards, it can be discharged into the atmosphere at high altitude.

[0003] In the prior art, when VOCs waste gas is treated by activated carbon, the external VOCs waste gas is usually sent into the VOCs removal device and passed through the activated carbon filter plate to achieve filtration treatment. However, it can only treat the VOCs waste gas once. Regardless of whether the VOCs waste gas inside it is completely treated, it will be discharged into the next process. After the treatment is completed, it is impossible to detect whether the VOCs waste gas still exists in it, and when VOCs waste gas exists, it cannot be sent into the VOCs removal device for further treatment.

[0004] Therefore, it is necessary to design a VOCs removal device for VOCs waste gas treatment technology to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present utility model is to provide a VOCs removal device for VOCs waste gas treatment technology to improve the efficiency of activated carbon filter plates in treating VOCs waste gas, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A VOCs removal device for VOCs waste gas treatment technology includes a removal device box and a frame. The top of the removal device box is provided with an air inlet, the bottom of the removal device box is provided with an exhaust port, a detachable activated carbon filter box is installed inside the removal device box, an activated carbon filter plate is provided inside the activated carbon filter box, a circulating fan is connected to the top of one side of the frame, an upper connecting pipe is connected to one side of the circulating fan, and a lower connecting pipe is connected to the other side of the circulating fan.

[0008] As a preferred solution of the present invention, a first fan is connected to the bottom end of the air inlet and located inside the removal device box, and the first fan is an exhaust fan.

[0009] As a preferred solution of the present invention, a second fan is connected to the top of the exhaust port and located inside the removal device box, and a VOCS sensor and an electric three-way valve are also provided on the exhaust port and located outside the removal device box.

[0010] As a preferred solution of the present invention, a transition fit is adopted between one side of the upper connecting pipe and the output end of the circulation fan, and the input end of the circulation fan is connected to one of the interfaces of the electric three-way valve through the lower connecting pipe.

[0011] As a preferred solution of the present invention, a primary filter screen is provided inside the air inlet, and the primary filter screen is used for preliminary filtering treatment of VOCs waste gas.

[0012] As a preferred solution of the present invention, installation grooves are provided on the left and right sides of the interior of the removal device box, and installation sliders are provided on the left and right sides of the activated carbon filter plate, and the installation sliders are slidably connected to the installation grooves.

[0013] As a preferred solution of the present invention, the base surface of the activated carbon filter plate is provided with a limiting card plate, the base surface of the removal device box is provided with a notch, and the activated carbon filter box body is inserted into the inside of the notch through the limiting card plate to install the activated carbon filter box body inside the removal device box.

[0014] Beneficial effect: In view of the problem that the existing technology cannot detect the inventory of treated VOCs waste gas and recirculate the VOCs waste gas, in the utility model, a circulation fan, an upper connecting pipe, a lower connecting pipe, a VOCS sensor and an electric three-way valve are provided in the VOCs removal device, so that the VOCS sensor can be used to detect whether VOCs waste gas components still exist in the treated gas. When it is detected that VOCs waste gas still remains, the electric three-way valve will be controlled to be connected to one side of the lower connecting pipe and to be closed to one side of the bottom of the exhaust port. At this time, the circulation fan can be started to re-introduce the gas with residual VOCs waste gas into the removal device box for further treatment. Until the VOCS sensor can no longer detect the VOCs waste gas components, the electric three-way valve will be controlled to be closed to one side of the lower connecting pipe and to be connected to one side of the bottom of the exhaust port to guide the gas out, thereby improving the treatment efficiency and being very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is an overall three-dimensional diagram of a VOCs removal device used in a VOCs waste gas treatment technology of the present utility model.

[0016] Figure 2 This is a partially separated three-dimensional diagram of a VOCs removal device used in a VOCs waste gas treatment technology of the utility model.

[0017] Figure 3 This is a schematic diagram of the interior of a VOCs removal device used in a VOCs waste gas treatment technology of the present utility model.

[0018] Figure 4 This is a structural schematic diagram of the air inlet in a VOCs removal device used in a VOCs waste gas treatment technology of the present utility model.

[0019] Figure 5 This is a schematic structural diagram of the exhaust port in a VOCs removal device used in a VOCs waste gas treatment technology of the present utility model.

[0020] In the figure: 1. Removal device box; 2. Air inlet; 21. First fan; 22. Primary filter screen; 3. Exhaust port; 31. Second fan; 32. VOCS sensor; 33. Electric three-way valve; 4. Activated carbon filter box; 5. Activated carbon filter plate; 6. Circulation fan; 7. Upper connecting pipe; 8. Lower connecting pipe; 9. Mounting slide; 10. Frame; 11. Mounting slide; 12. Limiting card. DETAILED DESCRIPTION

[0021] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to relevant references, and several embodiments of the present invention are given. However, the present invention 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 present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] A VOCs removal device for VOCs waste gas treatment technology includes a removal device box 1 and a frame 10. The top of the removal device box 1 is provided with an air inlet 2 for air intake, and the bottom of the removal device box 1 is provided with an exhaust port 3 for discharging the treated gas. A detachable activated carbon filter box 4 is installed inside the removal device box 1, and an activated carbon filter plate 5 is provided inside the activated carbon filter box 4 for treating VOCs waste gas.

[0027] Specifically, a circulating fan 6 is connected to the top of one side of the frame 10, an upper connecting pipe 7 is connected to one side of the circulating fan 6, and a lower connecting pipe 8 is connected to the other side of the circulating fan 6; a VOCS sensor 32 and an electric three-way valve 33 are also provided on the exhaust port 3 on the outside of the removal device box 1; a transition fit is adopted between one side of the upper connecting pipe 7 and the output end of the circulating fan 6, and the input end of the circulating fan 6 is connected to one of the interfaces of the electric three-way valve 33 through the lower connecting pipe 8; the VOCS sensor 32 is used to detect whether the treated gas still contains air. There are VOCs waste gas components. When it is detected that there are still residual VOCs waste gas, the electric three-way valve 33 will be controlled to be connected to one side of the lower connecting pipe 8 and closed to one side of the bottom of the exhaust port 3. At this time, the circulating fan 6 can be started to re-introduce the gas containing the residual VOCs waste gas into the removal device box 1 for further treatment. Until the VOCS sensor 32 can no longer detect the VOCs waste gas components, the electric three-way valve 33 will be controlled to be closed to one side of the lower connecting pipe 8 and connected to one side of the bottom of the exhaust port 3 to guide the gas out, thereby improving the treatment efficiency.

[0028] Preferably, a first fan 21 is connected to the bottom of the air inlet 2 and located inside the removal device box 1, and the first fan 21 is an exhaust fan; a second fan 31 is connected to the top of the exhaust port 3 and located inside the removal device box 1; the first fan 21 is used to send the VOCs waste gas that needs to be treated outside into the interior of the removal device box 1, and the second fan 31 is used to discharge the treated gas.

[0029] Preferably, a primary filter screen 22 is provided inside the air inlet 2, and the primary filter screen 22 is used to perform preliminary filtering treatment on the VOCs waste gas; the primary filter screen 22 is used to perform preliminary filtering treatment on the VOCs waste gas when it enters.

[0030] Preferably, installation grooves 9 are provided on the left and right sides of the interior of the removal device box 1, and installation sliders 11 are provided on the left and right sides of the activated carbon filter plate 5, and the installation sliders 11 and the installation grooves 9 are slidingly connected; a limiting card plate 12 is provided on the base surface of the activated carbon filter plate 5, and a notch is provided on the base surface of the removal device box 1, and the activated carbon filter box body 4 is inserted into the inside of the notch through the limiting card plate 12 to install the activated carbon filter box body 4 inside the removal device box 1; the activated carbon filter box body 4 is installed inside the removal device box 1 by sliding the installation slider 11 and the installation groove 9, which is also convenient for subsequent disassembly and replacement.

[0031] To sum up, the utility model can not only monitor the residual VOCs waste gas in the treated gas, but also re-introduce the gas into the removal device box for re-processing after monitoring the VOCs waste gas, thereby improving the waste gas treatment efficiency and being very practical.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A VOCs removal device for VOCs waste gas treatment technology, comprising a removal device box (1) and a frame (10), characterized in that: The top of the removal device box (1) is provided with an air inlet (2), the bottom of the removal device box (1) is provided with an exhaust port (3), a detachable activated carbon filter box (4) is installed inside the removal device box (1), an activated carbon filter plate (5) is provided inside the activated carbon filter box (4), a circulation fan (6) is connected to the top of one side of the frame (10), an upper connecting pipe (7) is connected to one side of the circulation fan (6), and a lower connecting pipe (8) is connected to the other side of the circulation fan (6).

2. The VOCs removal device for VOCs waste gas treatment technology according to claim 1, characterized in that: A first fan (21) is connected to the bottom end of the air inlet (2) and is located inside the removal device box (1), and the first fan (21) is an exhaust fan.

3. The VOCs removal device for VOCs waste gas treatment technology according to claim 1, characterized in that: A second fan (31) is connected to the top of the exhaust port (3) and located inside the removal device box (1). A VOCS sensor (32) and an electric three-way valve (33) are also provided on the exhaust port (3) and located outside the removal device box (1).

4. The VOCs removal device for VOCs waste gas treatment technology according to claim 1, characterized in that: One side of the upper connecting pipe (7) and the output end of the circulating fan (6) are connected by a transition fit, and the input end of the circulating fan (6) is connected to one of the interfaces of the electric three-way valve (33) through the lower connecting pipe (8).

5. The VOCs removal device for VOCs waste gas treatment technology according to claim 1, characterized in that: A primary filter screen (22) is provided inside the air inlet (2), and the primary filter screen (22) is used to perform preliminary filtering treatment on VOCs waste gas.

6. The VOCs removal device for VOCs waste gas treatment technology according to claim 1, characterized in that: The removal device box (1) is provided with mounting chutes (9) on the left and right sides thereof, and the activated carbon filter plate (5) is provided with mounting slide blocks (11) on the left and right sides thereof, wherein the mounting slide blocks (11) are slidably connected to the mounting chutes (9).

7. The VOCs removal device for VOCs waste gas treatment technology according to claim 1, characterized in that: The base surface of the activated carbon filter plate (5) is provided with a limiting card plate (12), and the base surface of the removal device box (1) is provided with a notch, and the activated carbon filter box body (4) is inserted into the inside of the notch through the limiting card plate (12), so that the activated carbon filter box body (4) is installed inside the removal device box (1).

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