A kind of reflux waste gas incinerator and its waste gas environmental protection treatment method
By using clean air conveying equipment and separators in a reflow exhaust gas incinerator, combined with the design of the catalyst layer and heat storage layer, the problem of failure to completely incinerate the waste gas in the prior art is solved, and zero emissions and efficient purification of the waste gas are achieved , improves the thermal energy utilization rate.
Patent Information
- Application Number
- CN202110588628.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-05-28
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2041-05-28
AI Technical Summary
The existing heat storage combustion and catalytic combustion furnaces fail to completely incinerate the exhaust gas during the commutation process, resulting in some untreated exhaust gas emissions and the inability to achieve zero exhaust emissions.
The reflow exhaust gas incinerator design is adopted, and the residual exhaust gas is pushed out in the U-shaped heating chamber through clean air conveying equipment and separators, and the catalyst layer and heat storage layer are used to achieve high-temperature combustion and decomposition of the exhaust gas, and the residual temperature of clean air is combined with the second time. Purification.
It achieves zero emissions of waste gas, improves waste gas purification efficiency and heat utilization rate, and reduces energy consumption.
Smart Images
Figure CN113375172B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of environmental protection equipment, and specifically relates to a reflow type waste gas incinerator and a waste gas environmental protection treatment method thereof. Background Art
[0002] Incineration is a very effective method for treating organic waste gas, highly toxic gas, and malodorous gas. Its principle is to use high heat to directly oxidize and decompose harmful substances in the waste gas, such as oxidizing organic matter into CO2 and H20. In order to save incineration costs, regenerative thermal combustion (RTO) and catalytic combustion (CO) processes are often used in daily production.
[0003] The thermal storage combustion (RTO) incinerator and the catalytic combustion (CO) incinerator in the prior art all adopt the reversing thermal storage method. During the thermal storage reversal, part of the unburned exhaust gas is directly discharged from the incinerator into the atmosphere with the reverse airflow without being treated. Although the exhaust gas treatment meets the national standards, it is impossible to achieve zero exhaust gas emissions. Summary of the invention
[0004] The present invention mainly provides a reflow waste gas incinerator and a waste gas environmental protection treatment method thereof, which can greatly improve the waste gas purification efficiency, achieve zero waste gas emission, and save energy and protect the environment.
[0005] In order to achieve the above object, the present invention adopts the following technical scheme:
[0006] A reflux waste gas incinerator, the incinerator is provided with a waste gas intake pipe and a clean air discharge port, a U-shaped heating chamber is arranged in the incinerator, the U-shaped heating chamber is connected inside, a group of heat storage layers are arranged on both sides, a burner is arranged on the top of the U-shaped heating chamber, the burner is connected to a natural gas pipeline, the waste gas intake pipe is respectively connected to one side of the two ends of the U-shaped heating chamber, an intake valve is arranged at each connection point at both ends, the other side of the two ends of the U-shaped heating chamber is connected to the clean air discharge port through a pipeline, and an exhaust valve is arranged at each connection point at both ends. When in use, the intake valve and exhaust valve at different ends of the U-shaped heating chamber are opened, so that the waste gas can enter any end of the U-shaped heating chamber from the waste gas intake pipe, and then be discharged to the clean air discharge port from the other end of the U-shaped heating chamber; a clean air conveying device is arranged in the middle space of the U-shaped heating chamber, which can convey clean air to the end of the U-shaped heating chamber being conveyed when the incinerator conveys waste gas in a state of waste gas conveying or stopping conveying, so as to push all the waste gas in the U-shaped heating chamber out of the U-shaped heating chamber;
[0007] The clean air delivery device includes a clean air intake pipe arranged in the middle of the U-shaped heating chamber, the clean air intake pipe is connected to both ends of the U-shaped heating chamber through clean air delivery pipes, and clean air valves are arranged on the clean air delivery pipes at both ends;
[0008] In this scheme, when the exhaust gas is reversed, it is only necessary to close all the air inlet valves and open the clean air valve and the exhaust valve at one end that is transporting the exhaust gas, so that the clean air can be transported into the U-shaped heating chamber, and the unburned exhaust gas in the U-shaped heating chamber can be pushed to the burner for combustion and decomposition, and then stored in the left heat storage layer until the exhaust gas in the U-shaped heating chamber is completely discharged, thus completing the reversing preparation work.
[0009] The clean air delivery equipment includes a separator connected to the exhaust gas inlet pipe and a clean air inlet pipe connected to the separator, which is arranged in the middle space of the U-shaped heating chamber. A clean air storage area is provided in the separator and is separated from the exhaust gas storage area by a movable plate. The capacity of the exhaust gas and the clean air is adjustable and the total amount remains unchanged. The exhaust gas storage area is connected to the exhaust gas inlet pipe through the separator inlet valve, and the clean air storage area is connected to the clean air inlet pipe and the clean air delivery pipe.
[0010] Further, the clean air intake pipe is connected to the clean air discharge port through a pipeline.
[0011] Furthermore, a catalyst layer is provided above the heat storage layer on both sides.
[0012] Furthermore, the incinerator is provided with an observation mirror for observing the working conditions in the U-shaped heating chamber.
[0013] Furthermore, the exhaust gas intake pipe and the clean air discharge port are provided with a VOC detection device.
[0014] A method for environmentally friendly treatment of waste gas using the aforementioned reflux waste gas incinerator comprises the following steps:
[0015] S1: In the preheating stage, the left clean air valve and the right air outlet valve are opened, and other valves are closed. The fan sends clean air into the clean air storage area of the separator through the clean air inlet pipe, and then sends it into the U-shaped heating chamber through the clean air delivery pipe. The clean air is heated by the burner and then stored in the right heat storage layer. The clean air after heat storage and cooling is discharged from the clean air outlet through the left air outlet valve.
[0016] S2: In the exhaust gas transportation stage, the right air inlet valve and the left air outlet valve are opened, and other valves are closed. The fan transports the exhaust gas to the U-shaped heating chamber through the exhaust gas inlet pipe and the right air inlet valve. The exhaust gas is preheated by the right heat storage layer and catalyzed by the right catalyst layer, and then decomposed by high-temperature combustion of the burner. The clean air after decomposition is stored in the left heat storage layer. The clean air after heat storage and cooling is discharged from the clean air outlet through the left air outlet valve.
[0017] S3: In the reversing preparation stage, the right clean air valve, the separator air inlet valve, and the left air outlet valve are opened, and other valves are closed. The fan conveys the exhaust gas into the exhaust gas storage area of the separator through the pipeline. The exhaust gas squeezes out the clean air in the separator and is sent into the U-shaped heating chamber through the clean air delivery pipe. The remaining untreated exhaust gas on the right side of the U-shaped heating chamber is pushed to the burner for high-temperature combustion and decomposition, and then heat is stored in the left heat storage layer until the exhaust gas in the U-shaped heating chamber is completely discharged, completing the reversing preparation work.
[0018] S4: In the reversing stage, the separator air inlet valve, the left air inlet valve and the right air outlet valve are opened, and other valves are closed. The fan sends clean air into the clean air storage area of the separator through the clean air inlet pipe. The clean air squeezes out the exhaust gas in the separator and flows back into the U-shaped heating chamber through the separator air inlet valve and the left air inlet valve. After all the exhaust gas flows back, the separator air inlet valve is closed. At the same time, the fan sends the exhaust gas to the U-shaped heating chamber through the exhaust gas inlet pipe and the left air inlet valve. After the exhaust gas is preheated by the left heat storage layer and catalyzed by the left catalyst layer, it is burned and decomposed by the burner at high temperature. The decomposed clean air is stored in the right heat storage layer. The clean air after heat storage and cooling is discharged from the clean air outlet through the right air outlet valve.
[0019] Furthermore, the heat storage temperature is 500-600°C and the combustion temperature is 750-850°C.
[0020] Beneficial effects of the present invention:
[0021] 1. This application adopts a clean air intake pipe and a clean air delivery pipe. When reversing, clean air is input into the U-shaped heating chamber to push out the residual exhaust gas, thereby improving the exhaust gas purification efficiency and achieving zero emission of VOC exhaust gas; at the same time, the clean air intake pipe and the clean air delivery pipe are arranged in the middle of the U-shaped heating chamber, and the surrounding waste heat plays a role in preheating and heat preservation of the clean air, providing heat for the heat storage layer, and improving the thermal energy utilization rate of the incinerator;
[0022] 2. The present application adopts a separator in combination with a clean air intake pipe and a clean air delivery pipe. By temporarily storing the waste gas sent in by the waste gas intake pipe during ventilation, the clean air can be input into the U-shaped heating chamber without stopping the waste gas delivery, and the waste gas remaining in the U-shaped heating chamber can be pushed out and the waste gas can be emptied, so that the waste gas can be completely incinerated and purified, and zero emission of VOC waste gas can be achieved; at the same time, the separator is arranged in the middle of the U-shaped heating chamber, and the surrounding residual heat prevents VOC from adhering, and plays the role of preheating the waste gas, thereby improving the waste gas purification efficiency and reducing energy consumption;
[0023] 3. The present application connects the clean air discharge port to the clean air inlet pipe of the separator, and the residual temperature of the purified air plays a role of heat storage. At the same time, the purified air flows back into the U-shaped heating chamber for secondary purification, further improving the exhaust gas purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the incinerator structure of Example 1.
[0025] Figure 2 This is a schematic diagram of the incinerator structure of Example 2.
[0026] Figure 3 This is a schematic diagram of the preheating airflow of the incinerator in Example 2.
[0027] Figure 4 This is a schematic diagram of the airflow during operation of the incinerator in Example 2.
[0028] Figure 5 This is a schematic diagram of the airflow preparation for the incinerator reversal in Example 2.
[0029] Figure 6 This is a schematic diagram of the airflow completed by the incinerator reversing in Example 2.
[0030] Among them, 1. fan; 2. exhaust gas inlet pipe; 3. inlet valve; 3a. left-hand inlet valve; 3b. right-hand inlet valve; 4. U-shaped heating chamber; 5. heat storage layer; 5a. left-hand heat storage layer; 5b. right-hand heat storage layer; 6. catalyst layer; 7. outlet valve; 7a. left-hand outlet valve; 7b. right-hand outlet valve; 8. clean air discharge port; 9. natural gas pipeline; 10. burner; 11. separator; 12. exhaust gas storage area; 13. clean air storage area; 14. clean air valve; 14a. left-hand clean air valve; 14b. right-hand clean air valve; 15. separator inlet valve; 16. clean air inlet pipe; 17. clean air delivery pipe. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example 1
[0032] Reference Figure 1A reflow exhaust gas incinerator is provided with an exhaust gas intake pipe 2 and a clean air discharge port 8 on the incinerator. A U-shaped heating chamber 4 is provided in the incinerator. The interior of the U-shaped heating chamber 4 is connected. A group of heat storage layers 5 are provided on both sides. A burner 10 is provided on the top of the U-shaped heating chamber 4. The burner 10 is connected to a natural gas pipeline 9. The exhaust gas intake pipe 2 is connected to one side of the two ends of the U-shaped heating chamber 4. An intake valve 3 is provided at each connection point at both ends. The other side of the two ends of the U-shaped heating chamber 4 is connected to the clean air discharge port 8 through a pipeline. An air outlet valve 7 is provided. When in use, the air inlet valve 3 and the air outlet valve 7 at different ends of the U-shaped heating chamber 4 are opened, so that the exhaust gas can enter any end of the U-shaped heating chamber 4 from the exhaust gas inlet pipe 2, and then be discharged to the clean air discharge port 8 from the other end of the U-shaped heating chamber 4; a clean air conveying device is provided in the middle space of the U-shaped heating chamber 4, which can convey clean air to the end of the U-shaped heating chamber 4 being conveyed when the incinerator conveys the exhaust gas in a reversed state, and push all the existing exhaust gas in the U-shaped heating chamber 4 out of the U-shaped heating chamber 4.
[0033] The clean air delivery device includes a clean air intake pipe 16 arranged in the middle of the U-shaped heating chamber 4. The clean air intake pipe 16 is connected to both ends of the U-shaped heating chamber 4 through clean air delivery pipes 17. Clean air valves 14 are provided on the clean air delivery pipes 17 at both ends.
[0034] In this embodiment, when the exhaust gas is reversed, it is only necessary to close all the air inlet valves 3, open the clean air valve 14 and the exhaust valve 7 at one end of the exhaust gas being transported, and then the clean air can be transported into the U-shaped heating chamber 4, and the exhaust gas that has not been incinerated in the U-shaped heating chamber 4 is pushed to the burner 10 for combustion and decomposition, and then stored in the left heat storage layer 5a until the exhaust gas in the U-shaped heating chamber 4 is completely discharged, and the reversing preparation work is completed.
[0035] Furthermore, the clean air intake pipe 16 is connected to the clean air discharge port 8 through a pipeline.
[0036] Furthermore, a catalyst layer 6 is provided above the heat storage layer 5 on both sides.
[0037] Furthermore, the incinerator is provided with an observation mirror for observing the working conditions in the U-shaped heating chamber 4.
[0038] Furthermore, the exhaust gas intake pipe 2 and the clean air discharge port 8 are provided with VOC detection devices.
[0039] Furthermore, the heat storage temperature is 500-600°C and the combustion temperature is 750-850°C.
[0040] The present application adopts a clean air intake pipe 16 and a clean air delivery pipe 17. When reversing, clean air is input into the U-shaped heating chamber 4 to push out the residual exhaust gas, which greatly improves the exhaust gas purification efficiency; at the same time, the clean air intake pipe 16 and the clean air delivery pipe 17 are arranged in the middle of the U-shaped heating chamber 4, and the surrounding waste heat plays a role in preheating and keeping the clean air warm, providing heat for the heat storage layer 5, and improving the thermal energy utilization rate of the incinerator. Example 2
[0041] Reference Figures 2 to 6 A reflow exhaust gas incinerator is provided with an exhaust gas intake pipe 2 and a clean air discharge port 8 on the incinerator. A U-shaped heating chamber 4 is provided in the incinerator. The interior of the U-shaped heating chamber 4 is connected. A group of heat storage layers 5 are provided on both sides. A burner 10 is provided on the top of the U-shaped heating chamber 4. The burner 10 is connected to a natural gas pipeline 9. The exhaust gas intake pipe 2 is connected to one side of the two ends of the U-shaped heating chamber 4. An intake valve 3 is provided at each connection point at both ends. The other side of the two ends of the U-shaped heating chamber 4 is connected to the clean air discharge port 8 through a pipeline. An air outlet valve 7 is provided. When in use, the air inlet valve 3 and the air outlet valve 7 at different ends of the U-shaped heating chamber 4 are opened, so that the exhaust gas can enter any end of the U-shaped heating chamber 4 from the exhaust gas inlet pipe 2, and then be discharged to the clean air discharge port 8 from the other end of the U-shaped heating chamber 4; a clean air conveying device is provided in the middle space of the U-shaped heating chamber 4, which can convey clean air to the end of the U-shaped heating chamber 4 being conveyed when the incinerator conveys the exhaust gas in a reversed state, and push all the existing exhaust gas in the U-shaped heating chamber 4 out of the U-shaped heating chamber 4.
[0042] The clean air delivery equipment includes a separator 11 connected to the exhaust gas inlet pipe 2 and a clean air inlet pipe 16 connected to the separator 11, which is arranged in the middle space of the U-shaped heating chamber 4. A clean air storage area 13 is provided in the separator 11 and is separated from the exhaust gas storage area 12 by a movable plate. The capacity of the exhaust gas and the clean air is adjustable and the total amount remains unchanged. The exhaust gas storage area 12 is connected to the exhaust gas inlet pipe 2 through a separator inlet valve 15, and the clean air storage area 13 is connected to the clean air inlet pipe 16 and the clean air delivery pipe 17.
[0043] Furthermore, the clean air intake pipe 16 is connected to the clean air discharge port 8 through a pipeline.
[0044] Furthermore, a catalyst layer 6 is provided above the heat storage layers 5 on both sides.
[0045] Furthermore, the incinerator is provided with an observation mirror for observing the working conditions in the U-shaped heating chamber 4.
[0046] Furthermore, the exhaust gas inlet 2 and the clean air outlet 8 are provided with VOC detection devices.
[0047] A method for environmentally friendly treatment of waste gas using the above-mentioned heat storage three-combustion layer waste gas direct combustion incinerator that can be regulated in layers, comprising the following steps:
[0048] S1: In the preheating stage, the left clean air valve 14a and the right air outlet valve 7b are opened, and other valves are closed. The fan 1 delivers clean air into the clean air storage area 13 of the separator 11 through the clean air inlet pipe 16, and then delivers it into the U-shaped heating chamber 4 through the clean air delivery pipe 17. The clean air is heated by the burner 10, and then stored in the right heat storage layer 5b. The clean air after heat storage and cooling is discharged from the clean air discharge port 8 through the left air outlet valve 7a.
[0049] S2: In the exhaust gas transportation stage, the right air inlet valve 3b and the left air outlet valve 7a are opened, and other valves are closed. The fan 1 transports the exhaust gas to the U-shaped heating chamber 4 through the exhaust gas inlet pipe 2 and the right air inlet valve 3b. The exhaust gas is preheated by the right heat storage layer 5b and catalyzed by the right catalyst layer 6b, and then decomposed by high-temperature combustion in the burner 10. The clean air after decomposition is stored in the left heat storage layer 5a. The clean air after heat storage and cooling is discharged from the clean air outlet 8 through the left air outlet valve 7a.
[0050] S3: In the reversing preparation stage, the right clean air valve 14b, the separator air inlet valve 15, and the left air outlet valve 7a are opened, and other valves are closed. The fan 1 conveys the exhaust gas into the exhaust gas storage area 12 of the separator 11 through the pipeline. The exhaust gas squeezes out the clean air in the separator 11 and is sent into the U-shaped heating chamber 4 through the clean air delivery pipe 17. The remaining untreated exhaust gas on the right side of the U-shaped heating chamber 4 is pushed to the burner 10 for high-temperature combustion and decomposition, and then heat is stored in the left heat storage layer 5a until the exhaust gas in the U-shaped heating chamber 4 is completely discharged, completing the reversing preparation work.
[0051] S4: In the reversing stage, the separator air inlet valve 15, the left air inlet valve 3a and the right air outlet valve 7b are opened, and other valves are closed. The fan 1 delivers clean air into the clean air storage area 13 of the separator 11 through the clean air inlet pipe 16. The clean air squeezes out the exhaust gas in the separator 11 and flows back into the U-shaped heating chamber 4 through the separator air inlet valve 15 and the left air inlet valve 3a. After all the exhaust gas flows back, the separator air inlet valve 15 is closed. At the same time, the fan 1 delivers the exhaust gas to the U-shaped heating chamber 4 through the exhaust gas inlet pipe 2 and the left air inlet valve 3a. The exhaust gas is preheated by the left heat storage layer 5a and catalyzed by the left catalyst layer 6a, and then decomposed by high-temperature combustion in the burner 10. The decomposed clean air accumulates heat in the right heat storage layer 5b. The clean air after heat accumulation and cooling is discharged from the clean air discharge port 8 through the right air outlet valve 7b.
[0052] Furthermore, the heat storage temperature is 500-600°C and the combustion temperature is 750-850°C.
[0053] Comparative Example 1
[0054] Remove the clean air delivery equipment, and the rest is the same as Example 1.
[0055] High-concentration exhaust gas is transported, with an exhaust gas concentration of 500~600mg / m³. A VOC online monitoring analyzer is used to detect the VOC concentration of the exhaust gas from the clean air exhaust port 8 during the reversing period.
[0056] The present application adopts a separator 11 in combination with a clean air intake pipe 16 and a clean air delivery pipe 17. By temporarily storing the waste gas sent in by the waste gas intake pipe 2 during ventilation, the clean air can be input into the U-shaped heating chamber 4 without stopping the waste gas delivery, and the waste gas remaining in the U-shaped heating chamber 4 can be pushed out, so that the waste gas can be completely incinerated and purified, and a high purification rate of VOC waste gas can be achieved; at the same time, the separator 11 is arranged in the middle of the U-shaped heating chamber 4, and the surrounding residual heat prevents VOC from adhering, and plays a role in preheating the waste gas, thereby improving the waste gas purification efficiency and the thermal energy utilization rate of the incinerator;
[0057] In addition, the present application connects the clean air discharge port 8 with the clean air inlet pipe 16 of the separator 11. The residual temperature of the purified air not only plays a role in heat storage, but also the purified air flows back into the U-shaped heating chamber 4 for secondary purification, further improving the exhaust gas purification efficiency.
[0058] With the above-mentioned ideal embodiment of the present invention as inspiration, through the above-mentioned description content, relevant staff can completely within the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A reflow waste gas incinerator, characterized in that: The incinerator is provided with an exhaust gas inlet pipe and a clean air discharge port. A U-shaped heating chamber is provided in the incinerator. The interior of the U-shaped heating chamber is connected, and a group of heat storage layers are provided on both sides. A burner is provided on the top of the U-shaped heating chamber, and the burner is connected to a natural gas pipeline. The exhaust gas inlet pipe is respectively connected to one side of the two ends of the U-shaped heating chamber, and an air inlet valve is provided at each connection point at both ends. The other side of the two ends of the U-shaped heating chamber is connected to the clean air discharge port through a pipeline, and an air outlet valve is provided at each connection point at both ends. When in use, the air inlet valve and the air outlet valve at different ends of the U-shaped heating chamber are opened, so that the exhaust gas can enter any end of the U-shaped heating chamber from the exhaust gas inlet pipe, and then be discharged to the clean air discharge port from the other end of the U-shaped heating chamber; a clean air conveying device is provided in the middle space of the U-shaped heating chamber, which can convey clean air to the end of the U-shaped heating chamber being conveyed when the exhaust gas conveying of the incinerator is reversed, and the exhaust gas conveying or stopping conveying is in the state, so that all the existing exhaust gas in the U-shaped heating chamber is pushed out of the U-shaped heating chamber; The clean air delivery device includes a clean air intake pipe arranged in the middle of the U-shaped heating chamber, the clean air intake pipe is connected to both ends of the U-shaped heating chamber through clean air delivery pipes, and clean air valves are arranged on the clean air delivery pipes at both ends; The clean air delivery equipment includes a separator connected to the exhaust gas inlet pipe and a clean air inlet pipe connected to the separator, which is arranged in the middle space of the U-shaped heating chamber. A clean air storage area is provided in the separator and is separated from the exhaust gas storage area by a movable plate. The capacity of the exhaust gas and the clean air is adjustable and the total amount remains unchanged. The exhaust gas storage area is connected to the exhaust gas inlet pipe through the separator inlet valve, and the clean air storage area is connected to the clean air inlet pipe and the clean air delivery pipe.
2. The reflow type waste gas incinerator according to claim 1, characterized in that: The clean air inlet pipe is connected to the clean air discharge port through a pipe.
3. The reflow type waste gas incinerator according to claim 1, characterized in that: Catalyst layers are arranged above the heat storage layers on both sides.
4. The reflow type waste gas incinerator according to claim 1, characterized in that: The incinerator is provided with an observation mirror for observing the working conditions in the U-shaped heating chamber.
5. The reflow type waste gas incinerator according to claim 1, characterized in that: The exhaust gas intake pipe and the clean air discharge port are provided with VOC detection devices.
6. A method for environmentally friendly treatment of waste gas using the reflow waste gas incinerator according to claim 1, characterized in that: The steps include: S1: In the preheating stage, the left clean air valve and the right air outlet valve are opened, and other valves are closed. The fan sends clean air into the clean air storage area of the separator through the clean air inlet pipe, and then sends it into the U-shaped heating chamber through the clean air delivery pipe. The clean air is heated by the burner and then stored in the right heat storage layer. The clean air after heat storage and cooling is discharged from the clean air discharge port through the left air outlet valve; S2: During the exhaust gas transportation stage, the right air inlet valve and the left air outlet valve are opened, and other valves are closed. The fan transports the exhaust gas to the U-shaped heating chamber through the exhaust gas inlet pipe and the right air inlet valve. The exhaust gas is preheated by the right heat storage layer and catalyzed by the right catalyst layer, and then decomposed by high-temperature combustion of the burner. The clean air after decomposition is stored in the left heat storage layer. The clean air after heat storage and cooling is discharged from the clean air outlet through the left air outlet valve; S3: In the reversing preparation stage, the right clean air valve, the separator air inlet valve, and the left air outlet valve are opened, and other valves are closed. The fan conveys the exhaust gas into the exhaust gas storage area of the separator through the pipeline. The exhaust gas squeezes out the clean air in the separator and is sent into the U-shaped heating chamber through the clean air conveying pipe. The remaining untreated exhaust gas on the right side of the U-shaped heating chamber is pushed to the burner for high-temperature combustion and decomposition, and then heat is stored in the left heat storage layer until the exhaust gas in the U-shaped heating chamber is completely discharged, completing the reversing preparation work; S4: In the reversing stage, the separator air inlet valve, the left air inlet valve and the right air outlet valve are opened, and other valves are closed. The fan sends clean air into the clean air storage area of the separator through the clean air inlet pipe. The clean air squeezes out the exhaust gas in the separator and flows back into the U-shaped heating chamber through the separator air inlet valve and the left air inlet valve. After all the exhaust gas flows back, the separator air inlet valve is closed. At the same time, the fan sends the exhaust gas to the U-shaped heating chamber through the exhaust gas inlet pipe and the left air inlet valve. After the exhaust gas is preheated by the left heat storage layer and catalyzed by the left catalyst layer, it is burned and decomposed by the burner at high temperature. The decomposed clean air is stored in the right heat storage layer. The clean air after heat storage and cooling is discharged from the clean air outlet through the right air outlet valve.
7. The method for environmentally friendly treatment of waste gas from a reflow waste gas incinerator according to claim 6, characterized in that: The heat storage temperature is 500~600℃ and the combustion temperature is 750~850℃.