A catalytic combustion device for industrial waste gas treatment

Abstract

This utility model relates to the field of catalytic combustion device technology, and discloses a catalytic combustion device for industrial waste gas treatment, comprising: a catalytic combustion chamber, wherein a waste gas supply pipe is installed at the inlet end of the catalytic combustion chamber; an outlet pipe is disposed at the top outlet of the catalytic combustion chamber, a hot gas supply pipe is installed at the outlet end of the outlet pipe, a gas storage tank is installed at the outlet end of the hot gas supply pipe, and a dilution gas pipe is installed at the outlet of the gas storage tank. By mixing preheated air in the gas storage tank with high-concentration waste gas through the dilution gas pipe, the concentration of high-concentration waste gas can be reduced. Simultaneously, the air is heated, which reduces interference with the waste gas temperature and prevents high-concentration waste gas from directly entering the catalytic combustion chamber. This effectively prevents a sudden temperature rise inside the catalytic combustion chamber, avoids localized high temperatures inside the catalytic combustion chamber due to waste gas concentration approaching or exceeding the lower explosive limit, and improves the safety performance of the device.

Description

Technical Field

[0001] This utility model relates to the field of catalytic combustion device technology, specifically a catalytic combustion device for industrial waste gas treatment. Background Technology

[0002] Catalytic combustion devices are environmentally friendly equipment that uses catalysts to reduce the activation energy of the reaction, and at lower temperatures, volatile organic compounds and carbon monoxide, along with oxygen, undergo an oxidation reaction to convert them into harmless substances such as carbon dioxide and water.

[0003] When common catalytic combustion devices react with high-concentration waste gas, the high concentration of organic matter in the waste gas can cause violent oxidation, releasing a large amount of heat. This can lead to a sudden rise in the temperature of the catalytic combustion chamber, causing the carrier to sinter and the precious metal active components to aggregate and deactivate. If the waste gas concentration approaches or exceeds the lower explosive limit, it may cause combustion and explosion due to local high temperature or sparks, resulting in a decrease in the safety performance of the device. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a catalytic combustion device for industrial waste gas treatment. This addresses the issues raised in the background art, such as the violent oxidation and release of large amounts of heat when the concentration of organic matter in high-concentration waste gas is too high, causing a sudden rise in the temperature of the catalytic combustion chamber, leading to carrier sintering and deactivation of precious metal active components, and the potential for combustion and explosion due to local high temperature or sparks if the waste gas concentration approaches or exceeds the lower explosive limit, resulting in a decrease in the safety performance of the device.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a catalytic combustion device for industrial waste gas treatment, comprising:

[0008] A catalytic combustion chamber, wherein an exhaust gas delivery pipe is installed at the air inlet end of the catalytic combustion chamber;

[0009] An exhaust pipe is installed at the top exhaust port of the catalytic combustion chamber. A hot gas transmission pipe is installed at the exhaust end of the exhaust pipe, and a gas storage box is installed at the exhaust end of the hot gas transmission pipe. A preheating box is provided on the back of the gas storage box.

[0010] A heating tank is installed on the inner wall of a gas storage box. The hot gas supply pipe is connected to the interior of the heating tank. A connecting pipe is installed at the outlet of the heating tank. The outlet of the connecting pipe is connected to the interior of a preheating box. An air pump is installed at the inlet of the gas storage box. A dilution gas pipe is installed at the outlet of the gas storage box. The dilution gas pipe is connected to the interior of the preheating box.

[0011] Preferably, the bottom air inlet of the preheating box is equipped with an exhaust gas inlet pipe, and the upper surface opening of the preheating box is equipped with a return pipe. The return pipe can improve the mixing efficiency of exhaust gas and air in the preheating box.

[0012] Preferably, a valve is installed on the surface of the return pipe, and the two ends of the return pipe are connected to the gas storage box and the preheating box respectively. Opening the valve can mix the exhaust gas in the preheating box with the air in the gas storage box.

[0013] Preferably, a regulating valve is installed on the surface of the air outlet pipe, and an exhaust pipe is installed on the surface of the air outlet pipe. The regulating valve can adjust the air supply volume of the air outlet pipe to the hot gas supply pipe for waste heat recovery, and the exhaust pipe can discharge the remaining purified waste gas.

[0014] Preferably, valves are installed on the surface of both the connecting pipe and the dilution gas pipe, and check valves are installed inside both the connecting pipe and the dilution gas pipe. Opening the valves allows the gas storage tank to be connected to the preheating tank.

[0015] Preferably, a first sealing pipe is installed at the connection between the dilution gas pipe and the gas storage tank, and a second sealing pipe is installed at the connection between the air pump and the gas storage tank. The first and second sealing pipes can improve the sealing performance of the contact parts between the dilution gas pipe, the air pump and the gas storage tank.

[0016] Beneficial effects

[0017] Compared with the prior art, this utility model provides a catalytic combustion device for industrial waste gas treatment, which has the following beneficial effects:

[0018] This catalytic combustion device for industrial waste gas treatment injects heat from the catalytic combustion chamber into a heating tank via a hot gas pipeline. The heating tank heats the air inside the gas storage tank, and the hot gas from the heating tank enters the preheating box through a connecting pipe to preheat the waste gas. When catalytically combusting high-concentration waste gas, the preheated air in the gas storage tank is mixed with the high-concentration waste gas through a dilution gas pipeline to reduce the concentration of the high-concentration waste gas. At the same time, the heated air reduces interference with the waste gas temperature and prevents high-concentration waste gas from directly entering the catalytic combustion chamber. This effectively prevents a sudden temperature rise inside the catalytic combustion chamber and avoids localized high temperatures inside the catalytic combustion chamber due to the waste gas concentration approaching or exceeding the lower explosive limit, thus improving the safety performance of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the preheating box of this utility model;

[0021] Figure 3This is a schematic diagram of the catalytic combustion chamber of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the gas storage box of this utility model.

[0023] In the diagram: 1. Catalytic combustion chamber; 101. Exhaust gas supply pipe; 2. Gas outlet pipe; 3. Hot gas supply pipe; 4. Gas storage tank; 5. Preheating box; 6. Heating tank; 7. Air pump; 8. Connecting pipe; 9. Dilution gas pipe; 10. Exhaust gas inlet pipe; 11. Return pipe; 12. Regulating valve; 13. Exhaust pipe; 14. First sealing pipe; 15. Second sealing pipe. Detailed Implementation

[0024] 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.

[0025] This utility model provides a technical solution: a catalytic combustion device for industrial waste gas treatment. (See also...) Figure 1 It includes a catalytic combustion chamber 1, and an exhaust gas pipe 101 is installed at the air inlet end of the catalytic combustion chamber 1;

[0026] The gas outlet pipe 2 is located at the top gas outlet of the catalytic combustion chamber 1. A hot gas transmission pipe 3 is installed at the gas outlet end of the gas outlet pipe 2. A gas storage box 4 is installed at the gas outlet end of the hot gas transmission pipe 3. A preheating box 5 is provided on the back of the gas storage box 4.

[0027] Please see Figure 4 A heating tank 6 is installed on the inner wall of the gas storage box 4. The hot gas supply pipe 3 is connected to the inside of the heating tank 6. A connecting pipe 8 is installed at the outlet of the heating tank 6. The outlet of the connecting pipe 8 is connected to the inside of the preheating box 5. An air pump 7 is installed at the inlet of the gas storage box 4. A dilution gas pipe 9 is installed at the outlet of the gas storage box 4. The dilution gas pipe 9 is connected to the inside of the preheating box 5.

[0028] The heat from the catalytic combustion chamber 1 can be injected into the heating tank 6 through the hot gas supply pipe 3. The heating tank 6 can heat the air inside the gas storage tank 4. The hot gas passing through the heating tank 6 will enter the preheating box 5 through the connecting pipe 8 to preheat the exhaust gas. When catalytically combusting high-concentration exhaust gas, the preheated air in the gas storage tank 4 can be mixed with the high-concentration exhaust gas through the dilution gas pipe 9 to reduce the concentration of the high-concentration exhaust gas. This prevents the high-concentration exhaust gas from directly entering the catalytic combustion chamber 1, effectively preventing a sudden temperature rise inside the catalytic combustion chamber 1 and avoiding local high temperatures inside the catalytic combustion chamber 1 due to exhaust gas concentration approaching or exceeding the lower explosive limit, thus improving the safety performance of the device.

[0029] Please see Figure 2 The preheating box 5 has an exhaust gas inlet pipe 10 installed at the bottom air inlet and a return pipe 11 installed at the opening on the upper surface of the preheating box 5. The return pipe 11 can improve the mixing efficiency of exhaust gas and air in the preheating box 5.

[0030] Please see Figure 1 A valve is installed on the surface of the return pipe 11. The two ends of the return pipe 11 are connected to the gas storage box 4 and the preheating box 5 respectively. Opening the valve can mix the exhaust gas in the preheating box 5 with the air in the gas storage box 4.

[0031] Please see Figure 3 A regulating valve 12 is installed on the surface of the exhaust pipe 2, and an exhaust pipe 13 is installed on the surface of the exhaust pipe 2. The regulating valve 12 can adjust the amount of gas supplied by the exhaust pipe 2 to the hot gas supply pipe 3 for waste heat recovery, and the remaining purified waste gas is discharged through the exhaust pipe 13.

[0032] Please see Figure 4 Valves are installed on the surface of both the connecting pipe 8 and the dilution pipe 9, and check valves are installed inside both the connecting pipe 8 and the dilution pipe 9. Opening the valves can connect the gas storage box 4 and the preheating box 5.

[0033] A first sealing pipe 14 is installed at the connection between the dilution pipe 9 and the gas storage tank 4, and a second sealing pipe 15 is installed at the connection between the air pump 7 and the gas storage tank 4. The first sealing pipe 14 and the second sealing pipe 15 can improve the sealing performance of the contact parts between the dilution pipe 9, the air pump 7 and the gas storage tank 4.

[0034] In operation, this solution works as follows: First, heat from the catalytic combustion chamber 1 is injected into the heating tank 6 via the hot gas supply pipe 3. The heating tank 6 heats the air inside the gas storage tank 4. The hot gas from the heating tank 6 then enters the preheating box 5 via the connecting pipe 8 to preheat the exhaust gas. When catalytically combusting high-concentration exhaust gas, the preheated air in the gas storage tank 4 is mixed with the high-concentration exhaust gas only through the dilution gas pipe 9. The mixing efficiency of the exhaust gas and air in the preheating box 5 is improved through the return pipe 11, thereby reducing the high concentration of exhaust gas. The concentration of exhaust gas is controlled to prevent high-concentration exhaust gas from directly entering the catalytic combustion chamber 1. This effectively prevents a sudden temperature rise inside the catalytic combustion chamber 1 and avoids localized high temperatures inside the catalytic combustion chamber 1 due to exhaust gas concentration approaching or exceeding the lower explosive limit, thus improving the safety performance of the device. Finally, the dilution gas pipe 9 and the return pipe 11 are closed, and air is injected into the gas storage tank 4 through the air pump 7 to mix with the exhaust gas in the gas storage tank 4. After the gas in the gas storage tank 4 has been heated, the dilution gas pipe 9 is opened again to inject it into the preheating box 5 to dilute the high-concentration exhaust gas.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A catalytic combustion device for treating industrial waste gas, characterized in that, include: A catalytic combustion chamber (1) is provided with an exhaust gas pipe (101) installed at its inlet end; An exhaust pipe (2) is installed at the top exhaust port of the catalytic combustion chamber (1). A hot gas transmission pipe (3) is installed at the exhaust end of the exhaust pipe (2). A gas storage box (4) is installed at the exhaust end of the hot gas transmission pipe (3). A preheating box (5) is provided on the back of the gas storage box (4). A heating tank (6) is installed on the inner wall of the gas storage tank (4). The hot gas transmission pipe (3) is connected to the interior of the heating tank (6). A connecting pipe (8) is installed at the outlet of the heating tank (6). The outlet end of the connecting pipe (8) is connected to the interior of the preheating box (5). An air pump (7) is installed at the inlet of the gas storage tank (4). A dilution gas pipe (9) is installed at the outlet of the gas storage tank (4). The dilution gas pipe (9) is connected to the interior of the preheating box (5).

2. The catalytic combustion device for industrial waste gas treatment according to claim 1, characterized in that: The preheating box (5) has an exhaust gas inlet pipe (10) installed at the bottom air inlet and a return pipe (11) installed at the opening on the upper surface of the preheating box (5).

3. A catalytic combustion device for industrial waste gas treatment according to claim 2, characterized in that: The surface of the return pipe (11) is equipped with a valve, and the two ends of the return pipe (11) are connected to the gas storage box (4) and the preheating box (5) respectively.

4. A catalytic combustion device for industrial waste gas treatment according to claim 1, characterized in that: A regulating valve (12) is installed on the surface of the air outlet pipe (2), and an exhaust pipe (13) is installed on the surface of the air outlet pipe (2).

5. A catalytic combustion device for industrial waste gas treatment according to claim 1, characterized in that: Valves are installed on the surface of both the connecting pipe (8) and the dilution pipe (9), and check valves are installed inside both the connecting pipe (8) and the dilution pipe (9).

6. A catalytic combustion device for industrial waste gas treatment according to claim 1, characterized in that: A first sealing pipe (14) is installed at the connection between the dilution gas pipe (9) and the gas storage tank (4), and a second sealing pipe (15) is installed at the connection between the air pump (7) and the gas storage tank (4).

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