Waste gas purification equipment for recycling plastic products

Abstract

The utility model provides waste gas purification equipment for plastic product recovery, which comprises a catalytic combustion box, the upper surface of the catalytic combustion box is fixedly connected with a gas outlet pipe, the left side of the catalytic combustion box is provided with an adsorption purification box, and the upper surface of the adsorption purification box is fixedly connected with a first pipeline. The end, away from the adsorption purification box, of the first pipeline is fixedly connected to the outer surface of the gas outlet pipe, a motor is fixedly connected to the upper surface of the catalytic combustion box, a first belt wheel is fixedly connected to the output end of the motor, and a first rotating shaft is fixedly connected to the face, away from the motor, of the first belt wheel. And a plurality of first wheel blades are fixedly connected to the outer surface of the first rotating shaft. The waste gas purification equipment for recycling the plastic products is reasonable in structure, heat in harmless tail gas generated after catalytic combustion is recycled, energy consumption is reduced, and resources are saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of waste gas purification equipment, and more specifically, it relates to a waste gas purification equipment for recycling plastic products. Background Technology

[0002] During the recycling of plastic products, processes such as heating, melting, and crushing produce waste gases containing volatile organic compounds (VOCs), dust, and irritating odors. If these gases are emitted directly without purification, they will severely pollute the atmosphere, harm the ecosystem, and endanger the health of workers.

[0003] Existing waste gas purification equipment generally uses catalytic combustion to remove harmful substances from waste gas, but the removal effect is not good. Moreover, catalytic combustion relies on electric heating elements or additional fuel combustion to increase the temperature, which significantly increases energy consumption and causes a great waste of resources. Utility Model Content

[0004] The purpose of this invention is to provide a waste gas purification device for recycling plastic products, which recycles the heat in the harmless exhaust gas after catalytic combustion, thereby reducing energy consumption and saving resources.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A waste gas purification device for recycling plastic products is provided, comprising a catalytic combustion chamber, an outlet pipe fixedly connected to the upper surface of the catalytic combustion chamber, an adsorption purification chamber arranged on the left side of the catalytic combustion chamber, a first pipe fixedly connected to the upper surface of the adsorption purification chamber, the end of the first pipe away from the adsorption purification chamber fixedly connected to the outer surface of the outlet pipe, a motor fixedly connected to the upper surface of the catalytic combustion chamber, a first pulley fixedly connected to the output end of the motor, a first rotating shaft fixedly connected to the side of the first pulley away from the motor, a first impeller fixedly connected to the outer surface of the first rotating shaft, and multiple first impellers located inside the first pipe.

[0006] Optionally, an air intake pipe is fixedly connected to the upper surface of the catalytic combustion chamber, and a fixing plate is fixedly connected to the upper surface of the catalytic combustion chamber. A second pulley is movably installed on the side wall of the fixing plate. A belt is movably sleeved between the first pulley and the second pulley. A second rotating shaft is fixedly connected to the side of the second pulley away from the fixing plate. A second impeller is fixedly connected to the outer surface of the second rotating shaft. There are multiple second impellers, and the second impellers are located inside the air intake pipe.

[0007] Optionally, a second one-way valve is fixedly connected to the inner surface of the first pipe, and a first one-way valve is fixedly connected to the inner surface of the air intake pipe.

[0008] Optionally, a second pipe is fixedly connected between the catalytic combustion chamber and the adsorption purification chamber, and a third one-way valve is fixedly connected to the inner surface of the second pipe. A third pipe is fixedly connected between the catalytic combustion chamber and the adsorption purification chamber, and a fourth one-way valve is fixedly connected to the inner surface of the third pipe.

[0009] Optionally, a heating ring is fixedly connected to the bottom of the catalytic combustion chamber, and a catalyst plate is fixedly connected to the inner wall of the catalytic combustion chamber.

[0010] Optionally, the inner wall of the adsorption purification box is fixedly connected with an adsorption plate, and there are multiple adsorption plates, with adsorption grooves opened on the side walls of the adsorption plates.

[0011] Optionally, a fourth pipe is fixedly connected to the side wall of the adsorption purification box, a first solenoid valve is fixedly connected to the outer surface of the fourth pipe, a pretreatment box is fixedly connected to the end of the fourth pipe away from the adsorption purification box, an exhaust gas inlet pipe is fixedly connected to the side wall of the pretreatment box, and a filter plate is fixedly connected to the inner wall of the pretreatment box. There are multiple filter plates, and a filter groove is formed on the upper surface of the filter plate.

[0012] Optionally, a fifth pipe is fixedly connected to the upper surface of the pretreatment box, a shower head is fixedly connected to the inner top of the pretreatment box, the shower head is connected to the fifth pipe, a drain pipe is fixedly connected to the side wall of the pretreatment box away from the exhaust gas inlet pipe, and a second solenoid valve is fixedly connected to the outer surface of the drain pipe.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, this waste gas purification equipment for plastic product recycling, through a motor, a first pulley, a first rotating shaft, a first impeller, an outlet pipe, a first pipeline, an adsorption purification box, and a catalytic combustion box, allows the motor to drive the first pulley to rotate, which in turn drives the first rotating shaft and the first impeller to rotate. This allows some of the high-temperature harmless gas generated by the catalytic combustion reaction to flow from the outlet pipe into the first pipeline. This high-temperature harmless gas can be transported through the first pipeline to the adsorption purification box, where it mixes with the high-concentration organic waste gas, increasing the temperature of the high-concentration organic waste gas. This further increases the initial temperature of the high-concentration organic waste gas in the catalytic combustion box, reducing the heat required for combustion, achieving heat recycling, and reducing energy consumption. Compared with existing waste gas purification devices, which generally use catalytic combustion to remove harmful substances from waste gas with poor removal effect, and rely on electric heating elements or additional fuel combustion to increase the temperature during catalytic combustion, significantly increasing energy consumption and causing great waste of resources, this waste gas purification equipment for plastic product recycling can recycle the heat in the harmless exhaust gas after catalytic combustion, reducing energy consumption and saving resources.

[0015] 2. Compared with existing technologies, this waste gas purification equipment for plastic product recycling uses an adsorption plate, a heating ring, a catalytic combustion chamber, a second pipe, an adsorption purification chamber, and an outlet pipe. When the adsorption plate adsorbs for a certain period of time and approaches adsorption saturation, the heating ring is energized to raise the temperature, which in turn raises the temperature in the catalytic combustion chamber. The high-temperature gas is then transported to the adsorption purification chamber through the second pipe, causing the chamber to heat up. As a result, a large amount of organic waste gas adsorbed on the adsorption plate is desorbed from the adsorption plate. At this point, the adsorption purification chamber contains a high concentration of organic waste gas, which is then transported to the catalytic combustion chamber through a third pipe. In the high-temperature environment of the catalytic combustion chamber, the gas reacts with oxygen to produce harmless substances such as carbon dioxide and water. These harmless substances are discharged into the air through the outlet pipe. The activated carbon on the adsorption plate can be regenerated through high-temperature desorption, extending its service life and reducing replacement costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the waste gas purification equipment for recycling plastic products provided in this embodiment of the utility model;

[0018] Figure 2 Partial structural cross-sectional view of the waste gas purification equipment for recycling plastic products provided in this embodiment of the utility model;

[0019] Figure 3 The waste gas purification equipment for recycling plastic products provided in this embodiment of the utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 The waste gas purification equipment for recycling plastic products provided in this embodiment of the utility model Figure 2 Enlarged view of the structure at point B;

[0021] Figure 5 A cross-sectional view of the catalytic combustion chamber structure of the waste gas purification equipment for recycling plastic products provided in this embodiment of the utility model;

[0022] Figure 6 A cross-sectional view of the adsorption purification box structure of the waste gas purification equipment for recycling plastic products provided in this embodiment of the utility model;

[0023] Figure 7A cross-sectional view of the pretreatment box structure of the waste gas purification equipment for recycling plastic products provided in this embodiment of the utility model;

[0024] Figure 8 The waste gas purification equipment for recycling plastic products provided in this embodiment of the utility model Figure 7 Enlarged view of the structure at point C.

[0025] The following are the labeling elements in the figure:

[0026] 1. Catalytic combustion chamber; 2. Adsorption purification chamber; 3. First pipe; 4. Outlet pipe; 5. Inlet pipe; 6. Motor; 7. First pulley; 8. First shaft; 9. First impeller; 10. Fixing plate; 11. Second pulley; 12. Belt; 13. Second shaft; 14. Second impeller; 15. First check valve; 16. Second check valve; 17. Second pipe; 18. Third check valve; 19. Third pipe; 20. Fourth check valve; 21. Heating ring; 22. Adsorption plate; 23. Adsorption tank; 24. Fourth pipe; 25. First solenoid valve; 26. Pretreatment chamber; 27. Filter plate; 28. Filter tank; 29. ​​Fifth pipe; 30. Shower head; 31. Exhaust gas inlet pipe; 32. Drain pipe; 33. Second solenoid valve; 34. Catalyst plate. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Reference Figure 1-8 The present invention provides a description of the waste gas purification equipment for plastic product recycling. The waste gas purification equipment for plastic product recycling includes a catalytic combustion chamber 1. An outlet pipe 4 is fixedly connected to the upper surface of the catalytic combustion chamber 1. An adsorption purification chamber 2 is located on the left side of the catalytic combustion chamber 1. A first pipe 3 is fixedly connected to the upper surface of the adsorption purification chamber 2. The end of the first pipe 3 away from the adsorption purification chamber 2 is fixedly connected to the outer surface of the outlet pipe 4. A motor 6 is fixedly connected to the upper surface of the catalytic combustion chamber 1. A first pulley 7 is fixedly connected to the output end of the motor 6. A first rotating shaft 8 is fixedly connected to the side of the first pulley 7 away from the motor 6. Multiple first blades 9 are fixedly connected to the outer surface of the first rotating shaft 8. The first blades 9 are located inside the first pipe 3. When the motor 6 operates, it drives the first pulley 7 to rotate, which in turn drives the first rotating shaft 8 and the first blades 9 to rotate. This allows some of the high-temperature harmless gas generated by the catalytic combustion reaction to flow from the outlet pipe 4 into the first pipe 3. This high-temperature harmless gas can be transported through the first pipe 3 to the adsorption purification chamber 2 for further processing. The high-concentration organic waste gas in step 2 is mixed to increase its temperature, which further increases the initial temperature of the high-concentration organic waste gas in the catalytic combustion chamber 1, reducing the heat required for combustion, achieving heat circulation, and reducing energy consumption. An air inlet pipe 5 is fixedly connected to the upper surface of the catalytic combustion chamber 1, and a fixed plate 10 is fixedly connected to the upper surface of the catalytic combustion chamber 1. A second pulley 11 is movably installed on the side wall of the fixed plate 10. A belt 12 is movably sleeved between the first pulley 7 and the second pulley 11. A second rotating shaft 13 is fixedly connected to the side of the second pulley 11 away from the fixed plate 10. A second impeller 14 is fixedly connected to the outer surface of the second rotating shaft 13. There are multiple second impellers 14. When the first pulley 7 rotates, it can drive the belt 12 to rotate, which in turn can drive the second pulley 11 to rotate, which in turn can drive the second rotating shaft 13 and the second impeller 14 to rotate, thereby drawing outside air into the catalytic combustion chamber 1 to participate in catalytic combustion. The second impeller 14 is located inside the air inlet pipe 5.

[0032] The waste gas purification equipment for recycling plastic products provided by this utility model, compared with the prior art, recycles the heat in the harmless exhaust gas after catalytic combustion, thereby reducing energy consumption and saving resources.

[0033] Please refer to another embodiment of this utility model as well. Figures 1 to 8A second one-way valve 16 is fixedly connected to the inner surface of the first pipe 3, and a first one-way valve 15 is fixedly connected to the inner surface of the intake pipe 5. The first one-way valve 15 only allows gas to flow from right to left. A second pipe 17 is fixedly connected between the catalytic combustion chamber 1 and the adsorption purification chamber 2. A third one-way valve 18 is fixedly connected to the inner surface of the second pipe 17. The third one-way valve 18 only allows gas to flow from right to left. A third pipe 19 is fixedly connected between the catalytic combustion chamber 1 and the adsorption purification chamber 2. A fourth one-way valve 20 is fixedly connected to the inner surface of the third pipe 19. The fourth one-way valve 20 only allows gas to flow from left to right. A heating ring 21 is fixedly connected to the bottom of the catalytic combustion chamber 1. An electric heating wire is installed inside the heating ring 21, which can be heated by electricity to catalytic combustion. The interior of chamber 1 is heated. A catalyst plate 34 is fixedly connected to the inner wall of the catalytic combustion chamber 1. The catalyst plate 34 catalyzes the combustion of high-temperature exhaust gas to produce harmless substances such as carbon dioxide and water. Multiple adsorption plates 22 are fixedly connected to the inner wall of the adsorption purification chamber 2. Adsorption grooves 23 are formed on the side walls of the adsorption plates 22. Activated carbon fibers are filled inside the adsorption plates 22, which adsorb volatile organic compounds in the exhaust gas due to their large specific surface area. A fourth pipe 24 is fixedly connected to the side wall of the adsorption purification chamber 2. A first solenoid valve 25 is fixedly connected to the outer surface of the fourth pipe 24. The first solenoid valve 25 controls whether gas can flow through the fourth pipe 24. A pretreatment chamber 26 is fixedly connected to the end of the fourth pipe 24 furthest from the adsorption purification chamber 2. The side wall of the treatment box 26 is fixedly connected to an exhaust gas inlet pipe 31, and the inner wall of the pretreatment box 26 is fixedly connected to a filter plate 27. There are multiple filter plates 27, which are used to intercept dust in the exhaust gas and reduce the difficulty of subsequent treatment. The upper surface of the filter plate 27 is provided with a filter groove 28. The overall operation process of the device is as follows: the exhaust gas enters the pretreatment box 26 through the exhaust gas inlet pipe 31, the dust in the exhaust gas is removed by the multi-layer filter plate 27, and the water-soluble pollutants in the exhaust gas are removed by the water spraying of the shower head 30. The pretreated exhaust gas is transported to the adsorption purification box 2 through the fourth pipe 24. The multi-layer adsorption plate 22 can adsorb the volatile organic compounds in the exhaust gas onto the adsorption plate 22. The harmless tail gas after adsorption can be transported through the third pipe. Gas 19 is transported to the catalytic combustion chamber 1 and finally discharged into the air through the outlet pipe 4. When the adsorption plate 22 adsorbs for a certain period of time, it approaches adsorption saturation. The heating ring 21 is energized to raise the temperature, thereby increasing the temperature in the catalytic combustion chamber 1. The high-temperature gas is then transported to the adsorption purification chamber 2 through the second pipe 17, where it begins to heat up. Consequently, a large amount of organic waste gas adsorbed on the adsorption plate 22 in the adsorption purification chamber 2 is desorbed from the adsorption plate 22. At this point, the adsorption purification chamber 2 contains a high concentration of organic waste gas, which is then transported to the catalytic combustion chamber 1 through the third pipe 19. In the high-temperature environment of the catalytic combustion chamber 1, the gas reacts with oxygen to produce harmless substances such as carbon dioxide and water. These high-temperature harmless substances are discharged into the air through the outlet pipe 4.The activated carbon on the adsorption plate 22 can be regenerated through high-temperature desorption, extending its service life and reducing replacement costs. A fifth pipe 29 is fixedly connected to the upper surface of the pretreatment box 26. A shower head 30 is fixedly connected to the inner top of the pretreatment box 26, and the shower head 30 is connected to the fifth pipe 29. Water is supplied through an external water pipe to the fifth pipe 29, flowing into the shower head 30 and then spraying out as a mist. This further removes dust from the exhaust gas and absorbs some water-soluble pollutants, reducing the difficulty of subsequent treatment. A drain pipe 32 is fixedly connected to the side wall of the pretreatment box 26 away from the exhaust gas inlet pipe 31. A second solenoid valve 33 is fixedly connected to the outer surface of the drain pipe 32, controlling its opening and closing. The drain pipe 32 discharges wastewater, which can then be properly treated to eliminate pollution.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An off-gas purification apparatus for plastic product recycling, comprising a catalytic combustion tank (1), characterized in that: The upper surface of the catalytic combustion box (1) is fixedly connected with the air outlet pipe (4), the left side of the catalytic combustion box (1) is provided with the adsorption purification box (2), the upper surface of the adsorption purification box (2) is fixedly connected with the first pipeline (3), the end of the first pipeline (3) away from the adsorption purification box (2) is fixedly connected with the outer surface of the air outlet pipe (4), the upper surface of the catalytic combustion box (1) is fixedly connected with the motor (6), the output end of the motor (6) is fixedly connected with the first belt pulley (7), one side of the first belt pulley (7) away from the motor (6) is fixedly connected with the first rotating shaft (8), the outer surface of the first rotating shaft (8) is fixedly connected with the first vane (9), the number of the first vane (9) is plurality, and the first vane (9) is located in the first pipeline (3).

2. The off gas purification apparatus for plastic product recycling according to claim 1, characterized by: The upper surface of the catalytic combustion box (1) is fixedly connected with the air inlet pipe (5), the upper surface of the catalytic combustion box (1) is fixedly connected with the fixed plate (10), the side wall of the fixed plate (10) is movably installed with the second belt pulley (11), the first belt pulley (7) and the second belt pulley (11) movably sleeve the belt (12), one side of the second belt pulley (11) away from the fixed plate (10) is fixedly connected with the second rotating shaft (13), the outer surface of the second rotating shaft (13) is fixedly connected with the second vane (14), the number of the second vane (14) is plurality, and the second vane (14) is located in the air inlet pipe (5).

3. The off gas purification apparatus for plastic product recycling according to claim 2, characterized by: The inner surface of the first pipeline (3) is fixedly connected with the second one-way valve (16), and the inner surface of the air inlet pipe (5) is fixedly connected with the first one-way valve (15).

4. The off gas cleaning apparatus for plastic product recycling according to claim 1, characterized by: The catalytic combustion box (1) and the adsorption purification box (2) are fixedly connected with the second pipeline (17), the inner surface of the second pipeline (17) is fixedly connected with the third one-way valve (18), the catalytic combustion box (1) and the adsorption purification box (2) are fixedly connected with the third pipeline (19), and the inner surface of the third pipeline (19) is fixedly connected with the fourth one-way valve (20).

5. The off gas purification apparatus for plastic product recycling according to claim 1, characterized by: The inner bottom of the catalytic combustion box (1) is fixedly connected with the heating ring (21), and the inner wall of the catalytic combustion box (1) is fixedly connected with the catalyst plate (34).

6. The off gas cleaning apparatus for plastic product recycling according to claim 1, characterized by: The inner wall of the adsorption purification box (2) is fixedly connected with the adsorption plate (22), the number of the adsorption plate (22) is plurality, and the side wall of the adsorption plate (22) is provided with the adsorption groove (23).

7. The off gas cleaning apparatus for plastic product recycling according to claim 1, characterized by: The side wall of the adsorption purification box (2) is fixedly connected with the fourth pipeline (24), the outer surface of the fourth pipeline (24) is fixedly connected with the first electromagnetic valve (25), one end of the fourth pipeline (24) away from the adsorption purification box (2) is fixedly connected with the pretreatment box (26), the side wall of the pretreatment box (26) is fixedly connected with the waste gas inlet pipe (31), the inner wall of the pretreatment box (26) is fixedly connected with the filter plate (27), the number of the filter plate (27) is plurality, and the upper surface of the filter plate (27) is provided with the filter groove (28).

8. The off gas purification apparatus for plastic product recycling according to claim 7, characterized by: The upper surface of the pre-treatment box (26) is fixedly connected with a fifth pipeline (29), the inner top of the pre-treatment box (26) is fixedly connected with a shower nozzle (30), the shower nozzle (30) is communicated with the fifth pipeline (29), the side wall of the pre-treatment box (26) away from the exhaust inlet pipe (31) is fixedly connected with a drain pipe (32), and the outer surface of the drain pipe (32) is fixedly connected with a second electromagnetic valve (33).

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