A drying room exhaust gas treatment device

Abstract

This utility model discloses a drying oven exhaust gas treatment device, which includes a cooling tower and an adsorption box. A water tank is fixedly connected to the bottom of the inner cavity of the cooling tower. A vent pipe is installed through the right side of the cooling tower, and one end of the vent pipe extends into the interior of the water tank. A water pump is installed on the left side of the cooling tower. This utility model cools the exhaust gas from the drying oven by allowing it to enter the water tank through the vent pipe. The water in the tank cools the exhaust gas. During this process, the water pump delivers water to the spray head through the liquid inlet pipe. After cooling, the exhaust gas enters the adsorption box, where volatile organic compounds (VOCs) and other pollutant molecules in the exhaust gas adhere to the surface of activated carbon and activated alumina. This achieves the purpose of pre-treating and cooling the high-temperature exhaust gas using solution and spraying, combined with adsorption of VOCs and other pollutant molecules in the exhaust gas, effectively treating the drying oven exhaust gas.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, and in particular relates to a drying oven waste gas treatment device. Background Technology

[0002] In the production of packaging materials, drying ovens are mainly used to dry materials that have undergone printing, coating, and lamination processes. For example, printed packaging paper and cardboard need to be dried in the drying oven to dry the ink quickly and cure it. For packaging materials such as plastic films and aluminum foil coated with functional coatings such as moisture-proof and oil-proof coatings, the drying oven can promote the evaporation of solvents in the coating, achieving good adhesion and drying effect of the coating.

[0003] The solvents, additives, and small molecules that evaporate during the drying process form the exhaust gas from the drying chamber. To reduce the impact of the high-temperature exhaust gas, we designed a drying chamber exhaust gas treatment device. This device uses solutions and spraying to pre-treat and cool the high-temperature exhaust gas, and then adsorbs pollutant molecules such as volatile organic compounds (VOCs) in the exhaust gas to effectively treat the drying chamber exhaust gas. Utility Model Content

[0004] The purpose of this invention is to provide a drying oven exhaust gas treatment device, which has the advantages of using solution and spray to pre-treat and cool high-temperature exhaust gas, and then adsorbing pollutant molecules such as volatile organic compounds (VOCs) in the exhaust gas to effectively treat the drying oven exhaust gas, thereby solving the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A drying oven exhaust gas treatment device includes a cooling tower and an adsorption box. A water tank is fixedly connected to the bottom of the inner cavity of the cooling tower. A vent pipe is installed through the right side of the cooling tower, and one end of the vent pipe extends into the interior of the water tank. A water pump is installed on the left side of the cooling tower. The inlet of the water pump is connected to an inlet pipe that extends into the interior of the water tank. The outlet of the water pump is connected to an outlet pipe. One end of the outlet pipe extends into the interior of the cooling tower and is equipped with multiple spray heads. A connecting pipe is connected to the top of the cooling tower. The end of the connecting pipe away from the cooling tower is connected to the adsorption box. Two adsorption boxes are installed in the inner cavity of the adsorption box. The inner cavities of the two adsorption boxes are filled with activated carbon and activated alumina from left to right. A smoke exhaust pipe installed on the ground is connected to the right side of the adsorption box.

[0006] Preferably, the water tank is equipped with a stirring component, and a partition fixed to the water tank is provided above the stirring component.

[0007] Preferably, a filter screen is installed at the end of the liquid inlet pipe located inside the water tank.

[0008] Preferably, the cooling tower has an inspection door hinged to its rear side.

[0009] Preferably, the adsorption box has two cavities for installing the adsorption box inside. The top of the adsorption box has a sealed cavity, and a cover is placed inside the sealed cavity. Four screws are threaded through the cover, and the screws are threadedly connected to the threaded holes in the inner wall of the sealed cavity.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model introduces a method to cool the exhaust gas from the drying oven into a water tank through a ventilation pipe. The water in the tank cools the exhaust gas. During this process, a water pump delivers water to the spray nozzles through an inlet pipe. After cooling, the exhaust gas enters the adsorption box, where volatile organic compounds (VOCs) and other pollutant molecules in the exhaust gas adhere to the surfaces of activated carbon and activated alumina. This achieves the purpose of pre-treating and cooling the high-temperature exhaust gas using solution and spraying, and then effectively treating the exhaust gas from the drying oven by adsorbing volatile organic compounds (VOCs) and other pollutant molecules in the exhaust gas.

[0012] 2. By incorporating a stirring element, this invention enables the water in the tank to be stirred, ensuring the recovery of easily liquefied and recyclable organic solvents from the water in the tank, thereby reducing production costs.

[0013] 3. This utility model, through the setting of the filter screen, can block foreign objects in the water tank, thus preventing foreign objects in the water tank from blocking the water pump;

[0014] 4. This utility model uses the cavity, sealing cavity, sealing cover and screws in combination. When the activated carbon and activated alumina in the adsorption box are saturated, the screws need to be operated to remove the sealing cover from the inner cavity of the sealing cavity. Then the adsorption box is taken out from the inner cavity of the cavity, and the activated carbon and activated alumina in the adsorption box are replaced and treated. Attached Figure Description

[0015] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.

[0016] Figure 1 This is a schematic diagram of one embodiment of the present utility model;

[0017] Figure 2 This is a three-dimensional disassembled schematic diagram of the adsorption box and the cap according to one embodiment of the present invention;

[0018] Figure 3 This is a three-dimensional disassembled schematic diagram of the adsorption box and adsorption container according to one embodiment of the present invention;

[0019] Figure 4This is a front cross-sectional view of a water tank according to an embodiment of the present invention.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Cooling tower; 2. Water tank; 3. Vent pipe; 4. Water pump; 5. Liquid inlet pipe; 6. Liquid outlet pipe; 7. Spray head; 8. Adsorption box; 9. Connecting pipe; 10. Adsorption box; 11. Activated carbon; 12. Activated alumina; 13. Stirring component; 14. Filter screen; 15. Inspection door; 16. Exhaust pipe; 17. Cavity; 18. Sealing chamber; 19. Cover; 20. Screw. Detailed Implementation

[0022] In the following description, embodiments of the drying oven exhaust gas treatment device of the present invention will be described with reference to the accompanying drawings.

[0023] Figure 1-4This invention illustrates an embodiment of a drying oven exhaust gas treatment device, comprising a cooling tower 1 and an adsorption box 8. A water tank 2 is fixedly connected to the bottom of the inner cavity of the cooling tower 1. A vent pipe 3 is installed through the right side of the cooling tower 1, with one end extending into the interior of the water tank 2. A water pump 4 is installed on the left side of the cooling tower 1. An agitator 13 is installed on the water tank 2, and a partition fixed to the water tank 2 is installed above the agitator 13. The agitator 13 agitates the water in the water tank 2, ensuring the water in the water tank 2 is kept stable. The system recycles easily liquefied and recyclable organic solvents to reduce production costs. The inlet of water pump 4 is connected to an inlet pipe 5 that extends into the interior of water tank 2. A filter screen 14 is installed at the end of the inlet pipe 5 within the interior of water tank 2. The filter screen 14 blocks foreign objects in water tank 2, preventing them from obstructing water pump 4. The outlet of water pump 4 is connected to an outlet pipe 6. One end of the outlet pipe 6 extends into the interior of cooling tower 1 and is equipped with multiple spray nozzles 7. The top of cooling tower 1 is connected to a... Pipe 9, the end of pipe 9 furthest from cooling tower 1, is connected to adsorption box 8. Two adsorption boxes 10 are installed inside the adsorption box 8. The inner cavities of the two adsorption boxes 10 are filled with activated carbon 11 and activated alumina 12 from left to right. Two chambers 17 are provided inside the adsorption box 8 for installing the adsorption boxes 10. A sealed cavity 18 is provided at the top of the adsorption box 8. A cover 19 is placed inside the sealed cavity 18. Four screws 20 are threaded through the cover 19. The adsorption box 8 is connected to the chambers 17, sealed cavity 18, cover 19, and screws 20. When the activated carbon 11 and activated alumina 12 in the adsorption box 10 inside the adsorption box 8 are saturated, the screw 20 is used to remove the cover 19 from the inner cavity of the sealed cavity 18. Then the adsorption box 10 is removed from the inner cavity of the cavity 17, and the activated carbon 11 and activated alumina 12 in the adsorption box 10 are replaced and processed. The screw 20 is threadedly connected to the threaded hole opened in the inner wall of the sealed cavity 18. The rear side of the cooling tower 1 is hinged with an inspection door 15, and the right side of the adsorption box 8 is connected to the exhaust pipe 16 installed on the ground.

[0024] Working principle: When this utility model is used, the exhaust gas from the drying chamber enters the water tank 2 through the ventilation pipe 3. The water in the water tank 2 cools the exhaust gas. During this process, the stirring component 13 works to ensure the cooling effect of the water in the water tank 2. During this process, the liquid in the water tank 2 is sprayed out through the spray head 7 by the water pump 4, the inlet pipe 5 and the outlet pipe 6. The exhaust gas coming out of the water tank 2 undergoes a second cooling process, which allows the easily liquefied and recyclable organic solvents in the exhaust gas to be recovered. After the cooling treatment, the exhaust gas enters the adsorption box 8. The pollutant molecules such as volatile organic compounds (VOCs) in the exhaust gas will adhere to the surface of activated carbon 11 and activated alumina 12 and then be discharged through the exhaust pipe 16.

[0025] In summary, this drying oven exhaust gas treatment device works by introducing the exhaust gas from the drying oven into the water tank 2 through the ventilation pipe 3. The water in the water tank 2 cools the exhaust gas. During this process, the water pump 4 delivers water to the spray head 7 through the liquid inlet pipe 5 for spraying. After cooling, the exhaust gas enters the adsorption box 8, where volatile organic compounds (VOCs) and other pollutant molecules in the exhaust gas adhere to the surfaces of activated carbon 11 and activated alumina 12. This achieves the goal of pre-treating and cooling the high-temperature exhaust gas using solution and spraying, combined with adsorption of volatile organic compounds (VOCs) and other pollutant molecules in the exhaust gas, effectively treating the drying oven exhaust gas.

Claims

1. A drying room exhaust gas treatment device, characterized by, The cooling tower (1) and the adsorption tank (8) are included. A water tank (2) is fixedly connected to the bottom of the inner cavity of the cooling tower (1). A vent pipe (3) is installed through the right side of the cooling tower (1), and one end of the vent pipe (3) extends into the interior of the water tank (2). A water pump (4) is installed on the left side of the cooling tower (1). The inlet of the water pump (4) is connected to an inlet pipe (5) that extends into the interior of the water tank (2). The outlet of the water pump (4) is connected to an outlet pipe (6). One end of the outlet pipe (6) is connected to the outlet pipe (8). The end of the tube extends into the interior of the cooling tower (1) and is equipped with multiple spray heads (7). The top of the cooling tower (1) is connected to a connecting pipe (9). The end of the connecting pipe (9) away from the cooling tower (1) is connected to the adsorption box (8). The inner cavity of the adsorption box (8) is equipped with two adsorption boxes (10). The inner cavities of the two adsorption boxes (10) are filled with activated carbon (11) and activated alumina (12) from left to right. The right side of the adsorption box (8) is connected to a smoke exhaust pipe (16) installed on the ground.

2. A drying room exhaust treatment apparatus according to claim 1, wherein A stirring component (13) is installed on the water tank (2), and a partition fixed to the water tank (2) is provided above the stirring component (13).

3. A treatment device for waste gases from a drying chamber according to claim 2, characterized in that A filter screen (14) is installed at the end of the inlet pipe (5) located inside the water tank (2).

4. A drying room exhaust treatment apparatus according to claim 3, wherein The cooling tower (1) is hinged to a maintenance door (15) on its rear side.

5. A treatment device for waste gases from a drying chamber according to claim 4, characterised in that The adsorption box (8) has two cavities (17) for installing the adsorption box (10) inside. The top of the adsorption box (8) has a sealing cavity (18). A cover (19) is placed inside the sealing cavity (18). Four screws (20) are installed through the cover (19). The screws (20) are threadedly connected to the threaded holes in the inner wall of the sealing cavity (18).

Images