Heat exchanger for catalytic oxidation of organic waste gas

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger for catalytic oxidation of organic waste gas, the cooled organic waste gas enters a catalytic oxidation device through a gas outlet pipe, and an impurity filtering assembly filters impurities in the organic waste gas, so that the impurities are prevented from adhering to the interior of a tube pass of a heat exchanger body; the service life and the heat exchange efficiency of the heat exchanger body are improved; comprising a heat exchanger body, a water inlet pipe, a water return pipe, an air inlet pipe, an air outlet pipe and an exhaust fan, the water inlet pipe is arranged at the shell pass input end of the heat exchanger body, the water return pipe is arranged at the shell pass output end of the heat exchanger body, and the air inlet pipe is arranged at the tube pass input end of the heat exchanger body; an air outlet pipe is arranged at the tube pass output end of the heat exchanger body, an exhaust fan is arranged on the air outlet pipe, and the impurity filtering assembly is arranged at the input end of the air inlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger for catalytic oxidation of organic waste gas. Background Art

[0002] With socioeconomic development, people are paying increasing attention to environmental issues, and organic waste gas emission standards are becoming increasingly stringent. Catalytic oxidation technology is an advanced oxidation technology for treating organic waste gas, offering the advantages of complete degradation, zero secondary pollution, and low energy and raw material consumption. Catalytic oxidation involves flameless, low-temperature combustion of organic waste gas within a catalytic chamber at temperatures below 300°C, degrading it into low-molecular-weight CO2 and H2O, along with other non-toxic and harmless components, which are released into the atmosphere.

[0003] In the prior art, a patent document with publication number CN205216579U discloses a heat exchanger for catalytic oxidation of organic waste gas. The heat exchanger is a shell-and-tube heat exchanger, which is arranged in the heat exchange space of the catalytic oxidation chamber. The air inlet end of the shell of the heat exchanger is connected to the air inlet of the heat exchange space, and the air outlet end of the shell is connected to the air inlet channel of the oxidation space. The air inlet end of the inner tube of the heat exchanger is connected to the exhaust channel of the oxidation space, and the air outlet end of the inner tube is connected to the air outlet of the heat exchange space. Heat exchange fins are spirally wound on the outer wall of the heat exchange tube of the heat exchanger.

[0004] During use, it was found that the above-mentioned device directly exchanges heat for the organic waste gas. The impurities in the organic waste gas will adhere to the inside of the heat exchanger, affecting the heat exchange efficiency and further affecting the subsequent catalytic oxidation of the organic waste gas. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a heat exchanger for catalytic oxidation of organic waste gas, which is capable of pre-filtering waste gas impurities.

[0006] The utility model discloses a heat exchanger for catalytic oxidation of organic waste gas, comprising a heat exchanger body, a water inlet pipe, a water return pipe, an air inlet pipe, an air outlet pipe and an exhaust fan, comprising a heat exchanger body, a water inlet pipe, a water return pipe, an air inlet pipe, an air outlet pipe and an exhaust fan, a shell side input end of the heat exchanger body is provided with a water inlet pipe, a shell side output end of the heat exchanger body is provided with a water return pipe, a tube side input end of the heat exchanger body is provided with an air inlet pipe, a tube side output end of the heat exchanger body is provided with an air outlet pipe, an exhaust fan is provided on the air outlet pipe, and an impurity filter component is also included, and an impurity filter component is provided at the input end of the air inlet pipe. Component; when in use, start the exhaust fan, so that the organic waste gas is filtered by the impurity filtering component and then enters the tube side of the heat exchanger body through the air inlet pipe, and the cooling water enters the shell side of the heat exchanger body through the water inlet pipe. The cooling water in the shell side cools the organic waste gas in the tube side, and then the cooling water flows back through the return pipe. The cooled organic waste gas enters the catalytic oxidation device through the outlet pipe. The impurity filtering component filters the impurities in the organic waste gas, avoiding the impurities from adhering to the inside of the tube side of the heat exchanger body, thereby improving the service life of the heat exchanger body and the heat exchange efficiency of the heat exchanger body.

[0007] Preferably, the impurity filtering assembly includes a No. 1 tee, an air supply pipe, an air supply valve, a No. 2 tee and a filter box assembly, the output end of the No. 1 tee is connected to the input end of the air inlet pipe, the input ends of the two groups of No. 1 tees are respectively connected to the output end of one group of air supply pipes, and the input ends of the two groups of air supply pipes are respectively connected to the two groups of output ends of the No. 2 tee, each group of air supply pipes is respectively provided with a group of filter box assemblies, each group of air supply pipes is respectively provided with two groups of air supply valves, and the filter box assembly is between the two groups of air supply valves; the two groups of air supply valves on the first group of air supply pipes are opened, and the two groups of air supply valves on the second group of air supply pipes are closed, and the organic waste gas enters the first group of air supply pipes and the first group of filter box assemblies through the No. 2 tee for impurity filtering, and when the two groups of filter box assemblies need to be switched, the two groups of air supply valves on the second group of air supply pipes are opened and the two groups of air supply valves on the first group of air supply pipes are closed to switch the two groups of filter box assemblies.

[0008] Preferably, it further includes a base, and the bottom end of the heat exchanger body is provided with a base; the base provides stable support for the heat exchanger body.

[0009] Preferably, the filter box assembly includes a filter box body, a sealing cover, a U-shaped plate, an axle pin, a screw and a butterfly nut. The filter box body is installed on the air supply pipe, and the top cover of the filter box body is equipped with a sealing cover. The sealing cover is symmetrically provided with U-shaped plates at both ends, and two sets of axle pins are symmetrically provided at both ends of the filter box body. One end of the two sets of screws is hinged to the filter box body through a set of axle pins, and each set of screws is screwed with a set of butterfly nuts; a molecular sieve is provided inside the filter box body, and the sealing cover is installed on the top of the filter box body. Thereafter, the screw is rotated to the inner side of the U-shaped plate with the cooperation of the axle pin, and the butterfly nut is rotated so that the butterfly nut is pressed against the top of the U-shaped plate, thereby completing the fixation of the sealing cover and improving convenience.

[0010] Preferably, it also includes a No. 1 thermometer and a No. 2 thermometer. The No. 1 thermometer is provided on the air inlet pipe, and the No. 2 thermometer is provided on the air outlet pipe. The staff can understand the heat exchange efficiency of the heat exchanger body through the temperature difference between the No. 1 thermometer and the No. 2 thermometer so as to detect it in time.

[0011] Preferably, a reinforcing plate is provided between the heat exchanger body and the base; the heat exchanger body and the base are reinforced by the reinforcing plate to improve the connection firmness.

[0012] Preferably, a handle is further included. The top of the sealing cover is provided with a handle. The staff can lift the sealing cover through the handle to improve convenience.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the exhaust fan is started, so that the organic waste gas is filtered by the impurity filtering component and then enters the tube side of the heat exchanger body through the air inlet pipe, and the cooling water enters the shell side of the heat exchanger body through the water inlet pipe. The cooling water in the shell side cools the organic waste gas in the tube side, and then the cooling water flows back through the return pipe. The cooled organic waste gas enters the catalytic oxidation device through the outlet pipe, and the impurity filtering component filters the impurities in the organic waste gas, thereby avoiding the impurities from adhering to the inside of the tube side of the heat exchanger body, thereby improving the service life of the heat exchanger body and the heat exchange efficiency of the heat exchanger body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a first axonometric structural diagram of the present invention;

[0015] Figure 2 yes Figure 1 A schematic diagram of the partially enlarged structure of the middle part A;

[0016] Figure 3 This is a second axonometric structural diagram of the present invention;

[0017] Figure 4 It is an enlarged structural diagram of the structure of the No. 1 tee pipe and the No. 2 tee pipe;

[0018] Figure 5 yes Figure 4 Schematic diagram of the partially enlarged structure of part B in the middle.

[0019] Markings in the attached figure: 1. Heat exchanger body; 2. Water inlet pipe; 3. Return pipe; 4. Air inlet pipe; 5. Air outlet pipe; 6. Exhaust fan; 7. No. 1 tee pipe; 8. Gas supply pipe; 9. Gas supply valve; 10. No. 2 tee pipe; 11. Base; 12. Filter box body; 13. Sealing cover; 14. U-shaped plate; 15. Axis pin; 16. Screw; 17. Butterfly nut; 18. No. 1 thermometer; 19. No. 2 thermometer; 20. Handle. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention. Example 1

[0021] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model is a heat exchanger for catalytic oxidation of organic waste gas, comprising a heat exchanger body 1, a water inlet pipe 2, a return water pipe 3, an air inlet pipe 4, an air outlet pipe 5 and an exhaust fan 6. The heat exchanger body 1 is provided with a water inlet pipe 2, a return water pipe 3, an air inlet pipe 4, an air outlet pipe 5 and an exhaust fan 6. The shell side input end of the heat exchanger body 1 is provided with a water inlet pipe 2, the shell side output end of the heat exchanger body 1 is provided with a return water pipe 3, the tube side input end of the heat exchanger body 1 is provided with an air inlet pipe 4, the tube side output end of the heat exchanger body 1 is provided with an air outlet pipe 5, and the exhaust fan 6 is provided on the air outlet pipe 5. It also includes an impurity filter component, and the input end of the air inlet pipe 4 is provided with an impurity filter component;

[0022] like Figure 1 、 Figure 3 and Figure 4 As shown, the impurity filtering assembly includes a No. 1 tee pipe 7, an air supply pipe 8, an air supply valve 9, a No. 2 tee pipe 10 and a filter box assembly. The output end of the No. 1 tee pipe 7 is connected to the input end of the air inlet pipe 4, and the input ends of the two groups of No. 1 tees 7 are respectively connected to the output end of a group of air supply pipes 8, and the input ends of the two groups of air supply pipes 8 are respectively connected to the two groups of output ends of the No. 2 tee pipe 10. Each group of air supply pipes 8 is respectively provided with a group of filter box assemblies, and each group of air supply pipes 8 is respectively provided with two groups of air supply valves 9. The filter box assembly is between the two groups of air supply valves 9.

[0023] In this embodiment, the two groups of gas valves 9 on the first group of gas pipes 8 are opened, and the two groups of gas valves 9 on the second group of gas pipes 8 are closed. When it is necessary to switch the two groups of filter box assemblies, the two groups of gas valves 9 on the second group of gas pipes 8 and the two groups of gas valves 9 on the first group of gas pipes 8 can be switched. When in use, the exhaust fan 6 is started, so that the organic waste gas passes through the first group of filter box assemblies and is filtered and enters the pipe side of the heat exchanger body 1 through the air inlet pipe 4. The cooling water enters the shell side of the heat exchanger body 1 through the water inlet pipe 2. The cooling water in the shell side cools the organic waste gas in the pipe side, and then the cooling water flows back through the return pipe 3. The cooled organic waste gas enters the catalytic oxidation device through the outlet pipe 5. The impurity filter assembly filters impurities in the organic waste gas, thereby preventing impurities from adhering to the inside of the pipe side of the heat exchanger body 1, thereby improving the service life of the heat exchanger body 1 and the heat exchange efficiency of the heat exchanger body 1. Example 2

[0024] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model is a heat exchanger for catalytic oxidation of organic waste gas, comprising a heat exchanger body 1, a water inlet pipe 2, a return water pipe 3, an air inlet pipe 4, an air outlet pipe 5 and an exhaust fan 6. The heat exchanger body 1 is provided with a water inlet pipe 2, a return water pipe 3, an air inlet pipe 4, an air outlet pipe 5 and an exhaust fan 6. The shell side input end of the heat exchanger body 1 is provided with a water inlet pipe 2, the shell side output end of the heat exchanger body 1 is provided with a return water pipe 3, the tube side input end of the heat exchanger body 1 is provided with an air inlet pipe 4, the tube side output end of the heat exchanger body 1 is provided with an air outlet pipe 5, and the exhaust fan 6 is provided on the air outlet pipe 5. It also includes an impurity filter component, and the input end of the air inlet pipe 4 is provided with an impurity filter component;

[0025] like Figure 1 、 Figure 3 and Figure 4 As shown, the impurity filtering assembly includes a No. 1 tee pipe 7, an air supply pipe 8, an air supply valve 9, a No. 2 tee pipe 10 and a filter box assembly. The output end of the No. 1 tee pipe 7 is connected to the input end of the air inlet pipe 4. The input ends of the two groups of No. 1 tee pipes 7 are respectively connected to the output end of one group of air supply pipes 8. The input ends of the two groups of air supply pipes 8 are respectively connected to the two groups of output ends of the No. 2 tee pipe 10. Each group of air supply pipes 8 is respectively provided with a group of filter box assemblies. Each group of air supply pipes 8 is respectively provided with two groups of air supply valves 9. The filter box assembly is between the two groups of air supply valves 9.

[0026] like Figure 4 and Figure 5As shown, the filter box assembly includes a filter box body 12, a sealing cover 13, a U-shaped plate 14, an axle pin 15, a screw 16 and a butterfly nut 17. The filter box body 12 is installed on the gas pipe 8. The top cover of the filter box body 12 is equipped with a sealing cover 13. The U-shaped plates 14 are respectively provided at both ends of the sealing cover 13. Two sets of axle pins 15 are respectively provided at both ends of the filter box body 12. One end of the two sets of screws 16 is hinged to the filter box body 12 through a set of axle pins 15. A set of butterfly nuts 17 are screwed on each set of screws 16.

[0027] It also includes a first thermometer 18 , a second thermometer 19 and a handle 20 . The first thermometer 18 is provided on the air inlet pipe 4 , the second thermometer 19 is provided on the air outlet pipe 5 , and the top of the sealing cover 13 is provided with a handle 20 .

[0028] In this embodiment, a molecular sieve is provided inside the filter box body 12, and the sealing cover 13 is installed on the top of the filter box body 12. Then, the lead screw 16 is rotated to the inner side of the U-shaped plate 14 with the cooperation of the shaft pin 15, and the butterfly nut 17 is rotated so that the butterfly nut 17 is pressed against the top of the U-shaped plate 14, thereby completing the fixing of the sealing cover 13, opening the two sets of gas valves 9 on the first set of gas pipes 8, and closing the two sets of gas valves 9 on the second set of gas pipes 8. When it is necessary to switch the two sets of filter box assemblies, the two sets of gas valves 9 on the second set of gas pipes 8 and the two sets of gas valves 9 on the first set of gas pipes 8 can be opened to switch the two sets of filter box assemblies. When in use, start the exhaust fan 6. As a result, the organic waste gas is filtered by the first group of filter box components and then enters the tube side of the heat exchanger body 1 through the air inlet pipe 4. The cooling water enters the shell side of the heat exchanger body 1 through the water inlet pipe 2. The cooling water in the shell side cools the organic waste gas in the tube side. Then the cooling water flows back through the return pipe 3. The cooled organic waste gas enters the catalytic oxidation device through the outlet pipe 5. The impurity filter component filters the impurities in the organic waste gas, avoiding the impurities from adhering to the inside of the tube side of the heat exchanger body 1, thereby improving the service life of the heat exchanger body 1 and the heat exchange efficiency of the heat exchanger body 1. The staff understands the heat exchange efficiency of the heat exchanger body 1 through the temperature difference between the No. 1 thermometer 18 and the No. 2 thermometer 19, so as to detect it in time.

[0029] The heat exchanger body 1 and the exhaust fan 6 of the heat exchanger for catalytic oxidation of organic waste gas of the utility model are purchased on the market. The technicians in this industry only need to install and operate them according to the accompanying instruction manual without the need for creative work by the technicians in this field.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A heat exchanger for catalytic oxidation of organic waste gas, comprising a heat exchanger body (1), a water inlet pipe (2), a water return pipe (3), an air inlet pipe (4), an air outlet pipe (5) and an exhaust fan (6), wherein the shell side input end of the heat exchanger body (1) is provided with a water inlet pipe (2), the shell side output end of the heat exchanger body (1) is provided with a water return pipe (3), the tube side input end of the heat exchanger body (1) is provided with an air inlet pipe (4), the tube side output end of the heat exchanger body (1) is provided with an air outlet pipe (5), and the air outlet pipe (5) is provided with an exhaust fan (6), characterized in that: It also includes an impurity filtering component, and the input end of the air intake pipe (4) is provided with an impurity filtering component.

2. A heat exchanger for catalytic oxidation of organic waste gas according to claim 1, characterized in that: The impurity filtering assembly comprises a No. 1 three-way pipe (7), an air delivery pipe (8), an air delivery valve (9), a No. 2 three-way pipe (10) and a filter box assembly. The output end of the No. 1 three-way pipe (7) is connected to the input end of the air inlet pipe (4). The input ends of the two groups of No. 1 three-way pipes (7) are respectively connected to the output end of one group of air delivery pipes (8). The input ends of the two groups of air delivery pipes (8) are respectively connected to the two groups of output ends of the No. 2 three-way pipe (10). Each group of air delivery pipes (8) is respectively provided with a group of filter box assemblies. Each group of air delivery pipes (8) is respectively provided with two groups of air delivery valves (9). The filter box assembly is between the two groups of air delivery valves (9).

3. The heat exchanger for catalytic oxidation of organic waste gas according to claim 1, characterized in that: It also includes a base (11), and the bottom end of the heat exchanger body (1) is provided with the base (11).

4. The heat exchanger for catalytic oxidation of organic waste gas according to claim 2, characterized in that: The filter box assembly includes a filter box body (12), a sealing cover (13), a U-shaped plate (14), an axle pin (15), a lead screw (16) and a butterfly nut (17). The filter box body (12) is installed on the gas transmission pipe (8). The top cover of the filter box body (12) is provided with a sealing cover (13). The sealing cover (13) is symmetrically provided at both ends. Two sets of axle pins (15) are symmetrically provided at both ends of the filter box body (12). One end of the two sets of lead screws (16) is hinged to the filter box body (12) through a set of axle pins (15). Each set of lead screws (16) is screwed with a set of butterfly nuts (17).

5. The heat exchanger for catalytic oxidation of organic waste gas according to claim 1, characterized in that: It also includes a first thermometer (18) and a second thermometer (19), wherein the first thermometer (18) is provided on the air inlet pipe (4) and the second thermometer (19) is provided on the air outlet pipe (5).

6. The heat exchanger for catalytic oxidation of organic waste gas according to claim 3, characterized in that: A reinforcement plate is provided between the heat exchanger body (1) and the base (11).

7. The heat exchanger for catalytic oxidation of organic waste gas according to claim 4, characterized in that: It also includes a handle (20), and the top end of the sealing cover (13) is provided with a handle (20).

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