Dry tail gas treatment device

Abstract

The utility model discloses a dry tail gas treatment device which comprises a treatment box, a U-shaped heat exchange pipe is fixedly embedded in the outer wall of the treatment box, a plurality of heat exchange pieces are evenly and fixedly arranged on the outer wall of the U-shaped heat exchange pipe in a sleeved mode, the outer wall of the treatment box is fixedly communicated with a U-shaped pipe, and the outer wall of the U-shaped pipe is fixedly communicated with a tail gas inlet pipe. And the interior of the treatment box is fixedly connected with two first partition plates, and the interior of the treatment box is fixedly connected with a second partition plate. High-temperature tail gas exchanges heat with the U-shaped heat exchange tubes through the heat exchange sheets, and recovered heat is used for heating a heat exchange medium (such as water or heat conduction oil); tail gas enters a spraying stage after being pre-cooled, cooling water consumption is reduced, and energy consumption of a water pump is reduced. Gas-liquid contact is enhanced, and the removal rate of water-soluble pollutants (such as SO2 and dust) is increased; and VOCS, peculiar smell and residual particulate matter are deeply adsorbed through the activated carbon filter screen, and it is guaranteed that tail gas reaches the standard to be discharged.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to a dry exhaust gas treatment device. Background Technology

[0002] Drying exhaust gas treatment refers to the purification and treatment of exhaust gas generated during the drying process to remove harmful substances, dust, volatile organic compounds (VOCs), and other pollutants, ensuring that the exhaust gas meets environmental emission standards or achieves resource recycling. Drying exhaust gas often contains a large amount of dust and particulate matter, which may originate from the material itself or byproducts generated during the drying process. For example, in the drying process of particleboard, the exhaust gas contains pollutants such as formaldehyde, dust, and SO2. Spray washing is one of the common exhaust gas treatment methods, which involves spraying a liquid (such as alkaline solution, acid solution, or water) into contact with the exhaust gas.

[0003] In existing technologies, spray washing (such as single water washing or alkaline washing towers) requires a large amount of industrial water to be replenished for continuous spraying. In particular, high-temperature exhaust gas needs to be circulated and cooled, and the water pump has high energy consumption. Therefore, we propose a dry exhaust gas treatment device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dry exhaust gas treatment device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A drying exhaust gas treatment device includes a treatment chamber. A U-shaped heat exchange tube is fixedly embedded in the outer wall of the treatment chamber. Multiple heat exchange fins are uniformly fixedly sleeved on the outer wall of the U-shaped heat exchange tube. A U-shaped pipe is fixedly interconnected with the outer wall of the treatment chamber. An exhaust gas inlet pipe is fixedly interconnected with the outer wall of the U-shaped pipe. Two first partitions are fixedly connected inside the treatment chamber. A second partition is fixedly connected inside the treatment chamber. A rectangular sleeve is fixedly connected between one of the first partitions and the second partition. A mating hole is formed between the rectangular sleeve and the outer wall of the treatment chamber. An L-shaped pipe is fixedly connected to the inner wall of the mating hole. A water pump is fixedly interconnected at one end of the L-shaped pipe, and an atomizing nozzle is fixedly interconnected at the top of the L-shaped pipe. A guide pipe is fixedly interconnected with the outer wall of the other first partition. A filter assembly is provided inside the treatment chamber.

[0007] Preferably, the filter assembly includes multiple activated carbon filter screens, and multiple U-shaped support plates are fixedly connected between the first partition and the treatment box. The tops of the multiple U-shaped support plates are in contact with the bottoms of the multiple activated carbon filter screens respectively. By setting the filter assembly to adsorb VOCs, odors and residual particulate matter, the exhaust gas is ensured to meet emission standards.

[0008] Preferably, a baffle plate is fixedly connected inside the treatment tank to assist sewage in being discharged from two drain pipes.

[0009] Preferably, the outer wall of the processing box has two drain pipes that are fixedly interconnected.

[0010] Preferably, the outer walls of the plurality of activated carbon filter screens are all fixedly fitted with U-shaped sealing gaskets, thereby increasing the sealing performance between the plurality of activated carbon filter screens and the treatment box and the first partition by setting multiple U-shaped sealing gaskets.

[0011] Preferably, the top of the treatment box is fixedly connected to an exhaust pipe, and the outer wall of the treatment box is hinged with a sealing door, which allows for the replacement of multiple activated carbon filters.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] In this solution, high-temperature exhaust gas undergoes heat exchange between heat exchange fins and U-shaped heat exchange tubes, recovering heat to heat the heat exchange medium (such as water or thermal oil). After pre-cooling, the exhaust gas enters the spraying stage, reducing cooling water consumption and lowering water pump energy consumption. This enhances gas-liquid contact and improves the removal rate of water-soluble pollutants (such as SO2 and dust). It also separates entrained water droplets, reducing mist emissions, and uses activated carbon filters to deeply adsorb VOCs, odors, and residual particulate matter, ensuring that the exhaust gas meets emission standards. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments 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.

[0015] Fig. 1 This is a three-dimensional structural diagram of a drying exhaust gas treatment device proposed in this utility model;

[0016] Fig. 2 This is a cross-sectional structural diagram of a drying exhaust gas treatment device proposed in this utility model;

[0017] Fig. 3 This is a cross-sectional three-dimensional structural diagram of a drying exhaust gas treatment device proposed in this utility model.

[0018] In the diagram: 1. Processing box; 2. U-shaped heat exchange tube; 3. Heat exchange plate; 4. U-shaped tube; 5. Exhaust gas inlet pipe; 6. Water baffle; 7. First partition; 8. Second partition; 9. Rectangular sleeve; 10. L-shaped tube; 11. Atomizing nozzle; 12. Drain pipe; 13. Guide pipe; 14. U-shaped support plate; 15. Activated carbon filter; 16. Exhaust gas discharge pipe; 17. Sealing door. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] Depend on Figs. 1-3 As shown, a drying exhaust gas treatment device is disclosed, comprising a treatment box 1. A U-shaped heat exchange tube 2 is fixedly embedded in the outer wall of the treatment box 1. A plurality of heat exchange plates 3 are uniformly fixedly sleeved on the outer wall of the U-shaped heat exchange tube 2. The heat exchange medium inside the U-shaped heat exchange tube 2 is heat-transferred through the plurality of heat exchange plates 3. A U-shaped pipe 4 is fixedly interconnected on the outer wall of the treatment box 1. An exhaust gas inlet pipe 5 is fixedly interconnected on the outer wall of the U-shaped pipe 4. The exhaust gas can be dispersed by exhausting from both ends of the U-shaped pipe 4. A baffle plate 6 is fixedly connected inside the treatment box 1 to prevent sewage from flowing to the left inner wall of the treatment box 1.

[0022] The treatment box 1 has two first partitions 7 fixedly connected inside, and a second partition 8 fixedly connected inside. A rectangular sleeve 9 is fixedly connected between one of the first partitions 7 and the second partition 8. The first partitions 7 and the second partition 8 increase the flow path of the exhaust gas and divide the treatment box 1 into multiple areas.

[0023] The rectangular sleeve 9 and the outer wall of the treatment box 1 are provided with a docking hole. An L-shaped pipe 10 is fixedly connected to the inner wall of the docking hole. A water pump is fixedly connected to one end of the L-shaped pipe 10. When the water pump is running, the external spray liquid is transported to the L-shaped pipe 10 and the atomizing nozzle 11. The reverse spraying forms a strong collision with the exhaust gas, which increases the gas-liquid contact area and the degree of mixing. The top of the L-shaped pipe 10 is fixedly connected to the atomizing nozzle 11. Two drain pipes 12 are fixedly connected to the outer wall of the treatment box 1. Another first partition 7 is fixedly connected to the outer wall of the first partition 7. When the air enters the pipe in reverse, the airflow in the pipe needs to overcome gravity and rise, making the water droplets more likely to settle due to gravity.

[0024] The treatment box 1 is equipped with a filter assembly, which includes multiple activated carbon filters 15. The exhaust gas is then filtered and purified by the multiple activated carbon filters 15. Another first partition 7 is fixedly connected to the treatment box 1 with multiple U-shaped support plates 14. The top of the multiple U-shaped support plates 14 respectively contacts the bottom of the multiple activated carbon filters 15, and the multiple U-shaped support plates 14 support the multiple activated carbon filters 15. The outer walls of the multiple activated carbon filters 15 are all fixedly fitted with U-shaped sealing gaskets. The top of the treatment box 1 is fixedly connected to an exhaust gas discharge pipe 16. The outer wall of the treatment box 1 is hinged with a sealing door 17, and a door lock is installed between the sealing door 17 and the treatment box 1.

[0025] Working principle: During use, the exhaust gas enters the U-shaped tube 4 through the exhaust gas inlet pipe 5, and then enters the treatment box 1 through the U-shaped tube 4. The high-temperature exhaust gas exchanges heat with multiple heat exchange plates 3, which heats the heat exchange medium of the U-shaped heat exchange tube 2, realizing heat recovery. After cooling, the exhaust gas enters the rectangular sleeve 9 through the baffle plate 6 and the first partition plate 7 on the right. Then, the water pump operates to deliver external spray liquid to the L-shaped tube 10 and the atomizing nozzle 11. The atomizing nozzle 11 sprays in reverse to purify the exhaust gas. The exhaust gas then enters the top opening of the guide pipe 13 through the top of the second partition plate 8. Utilizing the density difference between water and air, sedimentation is achieved. Wastewater is discharged through two drain pipes 12. The exhaust gas is then filtered and purified through multiple activated carbon filters 15, achieving the purpose of multiple purification.

[0026] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0027] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying exhaust gas treatment device, comprising a treatment chamber (1), characterized in that, The outer wall of the processing box (1) is fixedly inlaid with a U-shaped heat exchange tube (2), and a plurality of heat exchange plates (3) are uniformly fixedly sleeved on the outer wall of the U-shaped heat exchange tube (2). The outer wall of the processing box (1) is fixedly interconnected with a U-shaped tube (4), and the outer wall of the U-shaped tube (4) is fixedly interconnected with a tail gas inlet pipe (5). The interior of the processing box (1) is fixedly connected with two first partitions (7) and a second partition (8). One of the first partitions... A rectangular sleeve (9) is fixedly connected between the plate (7) and the second partition (8). The rectangular sleeve (9) and the outer wall of the treatment box (1) are provided with a docking hole. An L-shaped pipe (10) is fixedly connected to the inner wall of the docking hole. A water pump is fixedly connected to one end of the L-shaped pipe (10). An atomizing nozzle (11) is fixedly connected to the top of the L-shaped pipe (10). A guide pipe (13) is fixedly connected to the outer wall of the other first partition (7). A filter assembly is provided inside the treatment box (1).

2. The drying exhaust gas treatment device according to claim 1, characterized in that, The filtration assembly includes multiple activated carbon filter screens (15), and multiple U-shaped support plates (14) are fixedly connected between the first partition (7) and the treatment box (1). The tops of the multiple U-shaped support plates (14) are in contact with the bottoms of the multiple activated carbon filter screens (15).

3. The drying exhaust gas treatment device according to claim 1, characterized in that, A baffle plate (6) is fixedly connected inside the treatment box (1).

4. The drying exhaust gas treatment device according to claim 1, characterized in that, The outer wall of the treatment box (1) has two drain pipes (12) that are fixedly connected.

5. The drying exhaust gas treatment device according to claim 2, characterized in that, Each of the activated carbon filter screens (15) has a U-shaped sealing gasket fixedly fitted on its outer wall.

6. The drying exhaust gas treatment device according to claim 1, characterized in that, The top of the treatment box (1) is fixedly connected to an exhaust pipe (16), and the outer wall of the treatment box (1) is hinged with a sealing door (17).

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