Regenerative incineration device and method for industrial exhaust gas

Abstract

This invention discloses a regenerative thermal ignition (RTO) device and method for treating industrial waste gas, belonging to the field of industrial waste gas treatment technology. It includes three regenerative chambers, one combustion chamber, and a control piping assembly. Each regenerative chamber is fitted with a sealing door. Four power shafts are rotatably connected within each regenerative chamber, and sprockets are fixedly connected to each power shaft. The sprockets are arranged in pairs, and each pair of sprockets is connected to a chain for transmission. Multiple fixing rods are fixedly connected to the chain. Multiple support plates are installed within the regenerative chambers, and multiple ceramic regenerators are placed on the support plates. In this invention, the support for placing the ceramic regenerators has an assembled structure. This simple structure also makes replacing the ceramic regenerators easier and less labor-intensive. It does not require completely removing the entire ceramic regenerator; only the lower layer needs to be removed, the motor started, and the position of the ceramic regenerator adjusted. The operation is simple, and the practical effect is good.

Description

Technical Field

[0001] This invention relates to the field of industrial waste gas treatment technology, and in particular to a regenerative thermal ignition (RTO) device and method for treating industrial waste gas. Background Technology

[0002] Industrial waste gas refers to the general term for various pollutant-containing gases emitted into the air during fuel combustion and production processes within a factory area. In the treatment of industrial waste gas, regenerative thermal oxidizer (RTO) is often used. RTO is a highly efficient and mature technology for treating volatile organic compounds (VOCs). RTO consists of three towers (regenerative chambers) filled with ceramic regenerators, a common combustion chamber at the top, a set of switching valves, and a control system. The three-chamber RTO mainly consists of a regenerative chamber, a combustion chamber (furnace), and an airflow switching valve. In the operation of a three-chamber RTO, each regenerator chamber repeatedly switches between three states: intake, purging, and exhaust. After one cycle, VOCs always enter the regenerator chamber that discharged purified gas in the previous cycle, while the regenerator chamber that originally received VOCs is purged with purified gas or air, and the remaining unreacted VOCs are sent back to the combustion chamber for oxidation. Then, they are discharged from the backwashed regenerator chamber along with the purified gas. This process is continuously cyclical, thereby effectively reducing the heat emission after waste gas treatment and saving the heat consumption during waste gas oxidation and heating. Compared with other treatment methods, regenerator incineration has high thermal efficiency, with a heat recovery efficiency of over 95%. The heat energy can be stored in the regenerator for secondary utilization. It has high purification efficiency, reaching over 99%, and is safe and reliable. The waste heat can be returned to the drying tunnel, reducing the power consumption in the original drying tunnel, and can also be used as a heat source for other purposes.

[0003] In actual processing, the ceramic regenerators located in the regenerator chamber may fail due to chemical corrosion, physical blockage, thermal stress, mechanical wear, etc., thus requiring replacement. Furthermore, during use, factors such as temperature gradients, acid dew points, and pollutant pathways can cause severe pulverization or blockage of the lower ceramic regenerators, while the upper ceramic regenerators remain intact. Therefore, during replacement, the failed lower ceramic regenerators are typically discarded, the middle-layer ceramic regenerators are moved to the bottom layer, the upper-layer ceramic regenerators are moved to the middle layer, and some ceramic regenerators are added to the top layer. In practice, all valves must be closed first, and as much residual gas as possible in the regenerator chamber must be expelled. Then, the ceramic regenerators and the entire frame must be moved out for transport. This process is cumbersome, time-consuming, and labor-intensive. After transport, the entire frame needs to be cleaned, especially the bottom layer, to remove any remaining debris. Therefore, this paper provides a regenerable thermal incineration device and method for industrial waste gas treatment. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a regenerative thermal incineration device and method for treating industrial waste gas.

[0005] The present invention adopts the following technical solution:

[0006] A regenerative thermal ignition (RTO) device for industrial waste gas includes three regenerative chambers, one combustion chamber, and a control piping assembly. Each regenerative chamber is fitted with a sealing door. Four drive shafts are rotatably connected within each regenerative chamber, and sprockets are fixedly connected to each drive shaft. The sprockets are arranged in pairs, and each pair is connected to a chain for transmission. Multiple fixed rods are fixedly connected to the chain. Multiple support plates are installed within each regenerative chamber, and multiple ceramic regenerators are placed on the support plates. A control plate is slidably connected to each support plate, and a second spring is fixedly connected between the control plate and the support plate. Two movable sliding plates are slidably connected to the control plate, and a first spring is fixedly connected between the two movable sliding plates. Each movable sliding plate has a through hole, and the fixed rods are sleeved into the through holes. A sliding groove is formed within the support plate, and a control sliding plate is slidably connected to the sliding groove. A round rod is fixedly connected to the control sliding plate, and a connecting plate is rotatably connected to the round rod. The connecting plate and the control plate are rotatably connected. A telescopic rod is fixedly connected between the control sliding plate and the movable sliding plate.

[0007] Preferably, the support plate is equipped with a cleaning assembly, which includes a connecting rod fixedly installed under the movable slide plate. The connecting rod is slidably connected to a second rack. The support plate is rotatably connected to multiple rotating shafts. The rotating shafts are fixedly connected to second gears. The second gears mesh with the second racks. The support plate is slidably connected to four first racks. The rotating shafts are fixedly connected to first gears. The first gears mesh with the first racks. Two of the first racks are slidably connected to a cleaning crossbar.

[0008] Preferably, a third spring is fixedly connected between the cleaning cross plate and the first rack, a plug rod is fixedly connected to the cleaning cross plate, and multiple crossbars are fixedly connected to the movable slide plate.

[0009] Preferably, each of the support plates has multiple threaded drums snapped onto its underside.

[0010] Preferably, the side wall of the combustion chamber is fixedly connected to an air intake pipe, and the three heat storage chambers are connected to the combustion chamber through circulation pipes.

[0011] Preferably, the control piping assembly includes an exhaust gas inlet main pipe, a purified gas exhaust main pipe, and a cleaning main pipe. The exhaust gas inlet main pipe is connected to the heat storage chamber via an inlet branch pipe. The purified gas exhaust main pipe is connected to the heat storage chamber via a purified gas exhaust branch pipe. The cleaning main pipe is connected to the heat storage chamber via a cleaning branch pipe. A fan is fixedly connected to the side wall of the purified gas exhaust main pipe. An exhaust pipe is fixedly connected to the output end of the fan. The exhaust pipe is connected to the cleaning main pipe. An airflow switching valve is fixedly installed on the outside of the circulation pipe, the purified gas exhaust branch pipe, the inlet branch pipe, and the cleaning branch pipe.

[0012] Preferably, a motor is fixedly connected to the outside of the heat storage room, and one of the power shafts is fixedly connected to the output end of the motor.

[0013] A method for treating industrial waste gas using a regenerative thermal ignition (RTI) incineration device includes the following steps:

[0014] S1. First, start the fan and open the airflow switching valve connected to the exhaust gas inlet branch pipe connected to one of the heat storage chambers, as well as the airflow switching valve of the circulation pipe. The organic waste gas enters the heat storage chamber through the exhaust gas inlet main pipe-exhaust gas inlet branch pipe. The organic waste gas passes through the ceramic heat storage body from bottom to top and enters the combustion chamber along the circulation pipe.

[0015] S2. Inject natural gas and fresh air into the combustion chamber to begin oxidation combustion and stabilize the exhaust gas at the oxidation temperature;

[0016] S3. The VOCs in the organic waste gas undergo a complete oxidation reaction with oxygen, decomposing into carbon dioxide and water, and releasing a large amount of heat.

[0017] S4. Open the airflow switching valve of the circulation pipe connected to another heat storage chamber and the airflow switching valve of the purified gas exhaust branch pipe. The high-temperature purified gas after the oxidation reaction is completed leaves the combustion chamber and enters this heat storage chamber downwards. When the high-temperature gas flows through the ceramic heat storage body in this heat storage chamber, it transfers the heat it contains to the ceramic heat storage body. The ceramic heat storage body absorbs the heat and its temperature rises sharply, while the purified gas itself is cooled. The cooled clean gas is discharged through the purified gas exhaust branch pipe - purified gas exhaust main pipe - fan - exhaust pipe.

[0018] S5. Open the airflow switching valve of the cleaning main pipe connected to the last heat storage chamber and the airflow switching valve of the exhaust gas inlet branch pipe. A small portion of the cooled purified gas is blown back into this heat storage chamber, "pushing" the remaining, untreated raw exhaust gas back to the inlet end.

[0019] S6. Change all other airflow switching valves to start the next cycle, thereby achieving continuous, efficient, and energy-saving operation.

[0020] The beneficial effects of this invention are:

[0021] 1. First, the support plate and threaded drum for placing the ceramic heat storage body in this solution are assembled. The structure is simple and the replacement of the ceramic heat storage body is more convenient and labor-saving. It is not necessary to completely remove the ceramic heat storage body. Only the lower ceramic heat storage body needs to be removed, the motor needs to be started, and the position of the ceramic heat storage body needs to be adjusted. The operation is simple and the practical effect is good.

[0022] 2. Furthermore, during the replacement process, the bottom support plate will automatically disconnect, and the other support plates will only move up and down without affecting each other, demonstrating a high degree of automation and intelligence.

[0023] 3. Then, during the replacement process, the cleaning crossbar on the lower side of the bottom support plate will move relative to the support plate, thereby automatically cleaning up the accumulated material on the lower side of the support plate and reducing the workload of subsequent staff.

[0024] 4. Finally, during the cleaning process of the cleaning horizontal plate under the support plate, it does not move in a straight line relative to the cleaning horizontal plate, which can better achieve the cleaning effect of the accumulated material under the support plate. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a regenerative thermal ignition device for treating industrial waste gas proposed in this invention.

[0026] Figure 2 This is a schematic diagram of the regenerative chamber in a regenerative incineration device for industrial waste gas proposed in this invention.

[0027] Figure 3 This is a schematic diagram of the internal connection of the regenerative thermal incineration device for industrial waste gas proposed in this invention.

[0028] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0029] Figure 5 This is a schematic diagram showing the connection between the support plate and the ceramic regenerator in a regenerative thermal incineration device for industrial waste gas proposed in this invention.

[0030] Figure 6 This is a partial cross-sectional view of the support plate in a regenerative thermal ignition device for industrial waste gas proposed in this invention.

[0031] Figure 7 This is a schematic diagram showing the connection between the movable slide plate and the control plate in a regenerative thermal ignition treatment device for industrial waste gas proposed in this invention.

[0032] Figure 8 This is a bottom view of the support plate connection in a regenerative thermal incineration treatment device for industrial waste gas proposed in this invention.

[0033] Figure 9 This is a schematic diagram showing the connection of the first gear, the second gear, the first rack, and the second rack in a regenerative thermal incineration treatment device for industrial waste gas proposed in this invention.

[0034] Figure 10 This is a schematic diagram of the connection between the insert rod and the crossbar in a regenerative thermal incineration treatment device for industrial waste gas proposed in this invention.

[0035] In the diagram: 1. Heat storage chamber, 2. Combustion chamber, 3. Air intake pipe, 4. Airflow switching valve, 5. Purified gas exhaust main pipe, 6. Fan, 7. Exhaust pipe, 8. Circulation pipe, 9. Waste gas intake main pipe, 10. Cleaning main pipe, 11. Motor, 12. Sealing door, 13. Purified gas exhaust branch pipe, 14. Intake branch pipe, 15. Cleaning branch pipe, 16. Power shaft, 17. Sprocket, 18. Chain, 19. Fixing rod, 20. Support plate, 21. Ceramic heat storage body, 22. Moving slide plate, 23. Threaded drum, 24. First spring, 25. Control board, 26. Slide groove, 27. Round rod, 28. Control slide plate, 29. Connecting plate, 30. Telescopic rod, 31. Second spring, 32. Cleaning crossbar, 33. First gear, 34. Rotating shaft, 35. Second gear, 36. Third spring, 37. Connecting rod, 38. Second rack, 39. First rack, 40. Insert rod, 41. Crossbar. Detailed Implementation

[0036] See Figures 1-10 A regenerative thermal ignition (RTO) device for industrial waste gas includes three regenerative chambers 1, one combustion chamber 2, and a control piping assembly. An air inlet pipe 3 is fixedly connected to the side wall of the combustion chamber 2. The three regenerative chambers 1 are connected to the combustion chamber 2 via circulation pipes 8. Each of the three regenerative chambers 1 has a sealing door 12 snapped onto its outer side. Four drive shafts 16 are symmetrically rotatably connected in pairs inside each regenerative chamber 1. Each of the four drive shafts 16 has a sprocket 17 fixedly connected to its outer side. The sprockets 17 are arranged in pairs, and each pair of sprockets 17 is connected to a chain 18 for common transmission. Multiple fixing rods 19 are evenly fixedly connected to the outer side of the chain 18.

[0037] Multiple support plates 20 are installed inside the heat storage chamber 1, arranged vertically. Multiple ceramic heat storage elements 21 are placed on the upper side of each support plate 20. A control plate 25 is slidably connected to both sides of each support plate 20. A second spring 31 is fixedly connected between the control plate 25 and the support plate 20. Two movable slide plates 22 are slidably connected to the outer side of the control plate 25. A first spring 24 is fixedly connected between the two movable slide plates 22. Through holes are opened on the outer side of the movable slide plates 22. The fixed rod 19 is located on the side away from the chain 18. Extending into and connecting to the through hole, the support plate 20 has two sliding grooves 26 on both the left and right sides. Each sliding groove 26 is slidably connected to a control slide plate 28. A round rod 27 is fixedly connected to the side wall of the control slide plate 28. A connecting plate 29 is rotatably connected to the outside of the round rod 27. The connecting plate 29 and the control plate 25 are rotatably connected. A telescopic rod 30 is fixedly connected between the control slide plate 28 and the movable slide plate 22. A motor 11 is fixedly connected to the outside of the heat storage chamber 1. One of the power shafts 16 is fixedly connected to the output end of the motor 11.

[0038] First, when the ceramic heat storage element 21 needs to be replaced, the motor 11 is started. The motor 11 drives the drive shaft 16 to rotate, the drive shaft 16 drives the sprocket 17 to rotate, the sprocket 17 drives the chain 18 to move, the chain 18 drives the fixed rod 19 to move, and the fixed rod 19 drives the moving slide plate 22 and the support plate 20 to move downward as a whole. During the downward movement of the support plate 20, especially for the bottom support plate 20, when the bottom support plate 20 moves to the lower half-turn of the sprocket 17, the moving slide plate 22 will move away from the support plate 20. The moving slide plate 22 drives the control plate 25 to move away from the support plate 20, and the control plate 25 stretches the second spring 31. During this process, the second spring 31 is stretched. Figure 6From the perspective of the control plate 25 on the left, when it moves away from the support plate 20, since the control plate 25 and the connecting plate 29 are rotatably connected, and the control slide plate 28 and the slide groove 26 at the other end of the connecting plate 29 are slidably connected, the upper control slide plate 28 will move downward and the lower control slide plate 28 will move upward. Then, under the action of the telescopic rod 30, the upper and lower control slide plates 28 will move towards the other side through the telescopic rod 30, thus causing the moving slide plate 22 to slide relative to the fixed rod 19. Before the support plate 20 moves to the bottom of the sprocket 17, the moving slide plate 22 will slide towards the other side. The movable slide plate 22 and the fixing rod 19 are disconnected. At this time, without the restraining effect of the fixing rod 19, the support plate 20 will fall to the bottom of the heat storage chamber 1. The support plate 20 is removed from the heat storage chamber 1. The ceramic heat storage body 21 on the upper side of the support plate 20 is removed. The new ceramic heat storage body 21 is placed on the support plate 20 and the support plate 20 is placed at the top of the heat storage chamber 1. The movable slide plate 22 is manually pulled so that the through hole on the outside of the movable slide plate 22 is aligned with the fixing rod 19. The movable slide plate 22 is then released, thereby completing the fixing effect of the support plate 20 and finally completing the replacement operation of the ceramic heat storage body 21.

[0039] Each support plate 20 is equipped with a cleaning assembly on its underside. The cleaning assembly includes a connecting rod 37 fixedly installed on the underside of the movable slide plate 22. A second rack 38 is slidably connected to the side wall of the connecting rod 37. Multiple rotating shafts 34 are rotatably connected to the underside of the support plate 20. A second gear 35 is fixedly connected to the outer side of each rotating shaft 34. The second gear 35 meshes with the second rack 38. Four first racks 39 are slidably connected to the underside of the support plate 20. A first gear 33 is fixedly connected to the outer side of the rotating shaft 34. The first gear 33 meshes with the first rack 39. Two first racks 39 on the same side are slidably connected to a cleaning cross plate 32.

[0040] During the movement of the movable slide plate 22 relative to the control plate 25, the movable slide plate 22 drives the second rack 38 to move via the connecting rod 37. The second rack 38 drives the rotating shaft 34 to rotate via the second gear 35. The rotating shaft 34 drives the cleaning horizontal plate 32 to move via the first gear 33 and the first rack 39. The cleaning horizontal plate 32 can clean up the accumulated material on the underside of the support plate 20, reducing the workload of subsequent workers.

[0041] A third spring 36 is fixedly connected between the cleaning horizontal plate 32 and the first rack 39. A plug rod 40 is fixedly connected to the upper side of the cleaning horizontal plate 32, and multiple horizontal bars 41 are fixedly connected to the lower side of the moving slide plate 22.

[0042] During the movement of the movable skateboard 22, the insert rod 40 is located within two adjacent horizontal bars 41. When the movable skateboard 22 moves away from or towards the support plate 20, the movable skateboard 22 drives the insert rod 40 to move through the horizontal bars 41. The insert rod 40 drives the cleaning horizontal plate 32 to move. That is, during the cleaning process of the cleaning horizontal plate 32 under the support plate 20, it does not move in a straight line relative to the cleaning horizontal plate 32, which can better achieve the cleaning effect of the accumulated material under the support plate 20.

[0043] Each support plate 20 has multiple threaded drums 23 attached to its lower side. After the support plate 20 is installed, the threaded drums 23 are placed between two adjacent support plates 20. The threaded drums 23 are rotated so that both the upper and lower ends of the threaded drums 23 abut against the support plates 20. Under the support of the threaded drums 23, the stability of the connection between the two adjacent support plates 20 can be improved.

[0044] The control piping assembly includes an exhaust gas inlet main pipe 9, a purified gas exhaust main pipe 5, and a cleaning main pipe 10. The exhaust gas inlet main pipe 9 is connected to the heat storage chamber 1 via an inlet branch pipe 14. The purified gas exhaust main pipe 5 is connected to the heat storage chamber 1 via a purified gas exhaust branch pipe 13. The cleaning main pipe 10 is connected to the heat storage chamber 1 via a cleaning branch pipe 15. A fan 6 is fixedly connected to the side wall of the purified gas exhaust main pipe 5. An exhaust pipe 7 is fixedly connected to the output end of the fan 6. The exhaust pipe 7 is connected to the cleaning main pipe 10. An airflow switching valve 4 is fixedly installed on the outside of the circulation pipe 8, the purified gas exhaust branch pipe 13, the inlet branch pipe 14, and the cleaning branch pipe 15. The airflow switching valve 4 can control the opening and closing of the circulation pipe 8, the purified gas exhaust branch pipe 13, the inlet branch pipe 14, and the cleaning branch pipe 15, as well as the flow rate of the circulation pipe 8, the purified gas exhaust branch pipe 13, the inlet branch pipe 14, and the cleaning branch pipe 15.

[0045] A method for treating industrial waste gas using a regenerative thermal ignition (RTI) incineration device includes the following steps:

[0046] S1. First, start the fan 6 and open the airflow switching valve 4 connected to the exhaust gas inlet branch pipe 14 connected to one of the heat storage chambers 1 and the airflow switching valve 4 of the circulation pipe 8. The organic waste gas enters the heat storage chamber 1 through the exhaust gas inlet main pipe 9-exhaust gas inlet branch pipe 14. The organic waste gas passes through the ceramic heat storage body 21 from bottom to top and enters the combustion chamber 2 along the circulation pipe 8.

[0047] S2. Inject natural gas and fresh air into combustion chamber 2 to start oxidation combustion and stabilize the exhaust gas at the oxidation temperature (usually 800-850℃).

[0048] S3. Organic waste gas remains at this high temperature for a sufficient time (at least 1 second) to ensure that the VOCs in it undergo a complete oxidation reaction with oxygen, decomposing into carbon dioxide and water, and releasing a large amount of heat.

[0049] S4. Open the airflow switching valve 4 of the circulation pipe 8 connected to another heat storage chamber 1 and the airflow switching valve 4 of the purified gas exhaust branch pipe 13. The high-temperature purified gas after the oxidation reaction leaves the combustion chamber 2 and enters the heat storage chamber 1 downwards. When the high-temperature gas flows through the ceramic heat storage body 21 in the heat storage chamber 1, it transfers the heat it contains to the ceramic heat storage body 21. The ceramic heat storage body 21 absorbs the heat and its temperature rises sharply, while the purified gas itself is cooled. The cooled clean gas is discharged through the purified gas exhaust branch pipe 13 - purified gas exhaust main pipe 5 - fan 6 - exhaust pipe 7.

[0050] S5. Open the airflow switching valve 4 of the cleaning main pipe 10 connected to the last heat storage chamber 1 and the airflow switching valve 4 of the exhaust gas inlet branch pipe 14. A small portion of the cooled purified gas is blown back into this heat storage chamber 1, "pushing" the remaining, untreated raw exhaust gas back to the inlet end.

[0051] S6. Change all other airflow switching valves 4 to start the next cycle, thereby achieving continuous, efficient, and energy-saving operation.

[0052] In this invention, when waste gas treatment is required, the fan 6 is first started, and the airflow switching valve 4 connected to the waste gas inlet branch pipe 14 connected to one of the heat storage chambers 1 and the airflow switching valve 4 of the circulation pipe 8 are opened. Organic waste gas enters the heat storage chamber 1 through the waste gas inlet main pipe 9-waste gas inlet branch pipe 14. The organic waste gas flows from bottom to top through the ceramic heat storage body 21 and enters the combustion chamber 2 along the circulation pipe 8. Natural gas and fresh air are injected into the combustion chamber 2 to start oxidation combustion. The airflow switching valve 4 of the circulation pipe 8 connected to the other heat storage chamber 1 and the airflow switching valve 4 of the purified gas exhaust branch pipe 13 are opened. The high-temperature purified gas after the oxidation reaction is completed leaves the combustion chamber 2 and enters the heat storage chamber 1 downwards. When the high-temperature gas flows through the ceramic heat storage body 21 in this heat storage chamber 1, it transfers the heat it contains to the ceramic heat storage body 21. The ceramic heat storage body 21 absorbs the heat and its temperature rises sharply, while the purified gas itself is cooled. The cooled clean gas is discharged through the purified gas exhaust branch pipe 13-purified gas exhaust main pipe 5-fan 6-exhaust pipe 7. The airflow switching valve 4 of the cleaning main pipe 10 connected to the last heat storage chamber 1 and the airflow switching valve 4 of the exhaust gas inlet branch pipe 14 are opened. A small part of the cooled purified gas is blown back into this heat storage chamber 1, "pushing" the remaining untreated raw exhaust gas back to the inlet end. After a period of time, all other airflow switching valves 4 are changed to start the next cycle.

[0053] When the ceramic heat storage body 21 needs to be replaced, first rotate the threaded drum 23 between the bottom support plates 20 and between the bottom support plate 20 and the heat storage chamber 1, remove the threaded drum 23, and then start the motor 11. The motor 11 drives the power shaft 16 and the sprocket 17 to rotate. The sprocket 17 drives the chain 18 to move. The chain 18 drives the fixed rod 19 to move. The fixed rod 19 drives the moving slide plate 22 and the support plate 20 to move downward as a whole. During the downward movement of the support plate 20, when the bottom support plate 20 moves to the lower half-turn of the sprocket 17, the moving slide plate 22 will move away from the support plate 20. The moving slide plate 22 will drive the control plate 25 to move away from the support plate 20. The control plate 25 will stretch the second spring 31, causing the upper control slide plate 28 to move downward and the lower control slide plate 28 to move upward. Then, under the action of the telescopic rod 30, the upper and lower control slide plates 28 will drive the moving slide plate 22 to move closer to the support plate 20 via the telescopic rod 30. The sliding plate 22 moves relative to the fixed rod 19, causing the support plate 20 to slide before it moves to the bottom of the sprocket 17. The sliding plate 22 and the fixed rod 19 are disconnected. After the fixed rod 19 is no longer restrained, the support plate 20 falls to the bottom of the heat storage chamber 1. The support plate 20 is removed from the heat storage chamber 1. The ceramic heat storage body 21 on the upper side of the support plate 20 is removed. The new ceramic heat storage body 21 is placed on the support plate 20. The support plate 20 is placed at the top of the heat storage chamber 1. The sliding plate 22 is manually pulled so that the through hole on the outside of the sliding plate 22 is aligned with the fixed rod 19. The sliding plate 22 is released. The threaded drum 23 is placed between the support plate 20, the top of the previous support plate 20, the bottom support plate 20, and the heat storage chamber 1. The threaded drum 23 is rotated until both the top and bottom sides of the threaded drum 23 are against the support plate 20. The replacement of the ceramic heat storage body 21 is now complete.

[0054] During the movement of the movable slide plate 22 relative to the control plate 25, the movable slide plate 22 drives the second rack 38 to move through the connecting rod 37. The second rack 38 drives the rotating shaft 34 to rotate through the second gear 35. The rotating shaft 34 drives the cleaning horizontal plate 32 to move through the first gear 33 and the first rack 39. The cleaning horizontal plate 32 can clean the accumulated material on the underside of the support plate 20.

[0055] When the movable skateboard 22 moves away from or towards the support plate 20, the movable skateboard 22 drives the insert rod 40 to move via the crossbar 41, and the insert rod 40 drives the cleaning crossbar 32 to move. That is, during the cleaning process of the cleaning crossbar 32 under the support plate 20, it does not move in a straight line relative to the cleaning crossbar 32, so as to better achieve the cleaning effect of the accumulated material under the support plate 20.

Claims

1. A regenerative thermal ignition (RTI) device for treating industrial waste gas, comprising three regenerative chambers (1), one combustion chamber (2), and a control piping assembly, characterized in that, The heat storage chamber (1) is fitted with a sealing door (12). Four power shafts (16) are rotatably connected inside the heat storage chamber (1). The power shafts (16) are fixedly connected with sprockets (17). The sprockets (17) are arranged in pairs. Each pair of sprockets (17) is connected to a chain (18) for transmission. The chain (18) is fixedly connected with multiple fixing rods (19). Multiple support plates (20) are installed inside the heat storage chamber (1). Multiple ceramic heat storage bodies (21) are placed on the support plates (20). The support plate (20) is slidably connected to a control plate (25). A second spring (31) is fixedly connected between the control plate (25) and the support plate (20). The control plate (25) is slidably connected to two movable slide plates (22). A first spring (24) is fixedly connected between the two movable slide plates (22). The movable slide plates (22) have through holes. The fixing rod (19) is sleeved with the through holes. The support plate (20) has a sliding groove (26). The sliding groove (26) is slidably connected to a control plate. A control slide (28) is fixedly connected to a round rod (27), which is rotatably connected to a connecting plate (29). The connecting plate (29) and the control plate (25) are rotatably connected. A telescopic rod (30) is fixedly connected between the control slide (28) and the moving slide (22). A cleaning assembly is installed on the support plate (20). The cleaning assembly includes a connecting rod (37) fixedly installed under the moving slide (22). The connecting rod (37) is slidably connected to a second tooth. The support plate (20) is rotatably connected to multiple rotating shafts (34), and the rotating shafts (34) are fixedly connected to a second gear (35). The second gear (35) meshes with the second rack (38). The support plate (20) is slidably connected to four first racks (39). The rotating shaft (34) is fixedly connected to a first gear (33). The first gear (33) meshes with the first rack (39). The two first racks (39) are slidably connected to a cleaning cross plate (32).

2. The heat regenerative incineration device for industrial exhaust gas according to claim 1, wherein A third spring (36) is fixedly connected between the cleaning horizontal plate (32) and the first rack (39), a plug rod (40) is fixedly connected to the cleaning horizontal plate (32), and multiple horizontal bars (41) are fixedly connected to the movable slide plate (22).

3. The device for regenerative incineration treatment of industrial exhaust gas according to claim 2, characterized in that, Each of the support plates (20) has multiple threaded drums (23) snapped onto its underside.

4. The heat regenerative incineration device for industrial exhaust gas according to claim 3, wherein The side wall of the combustion chamber (2) is fixedly connected to an air intake pipe (3), and the three heat storage chambers (1) are connected to the combustion chamber (2) through a circulation pipe (8).

5. The device for regenerative incineration treatment of industrial exhaust gas according to claim 4, wherein The control pipeline assembly includes an exhaust gas inlet main pipe (9), a purified gas exhaust main pipe (5), and a cleaning main pipe (10). The exhaust gas inlet main pipe (9) is connected to the heat storage chamber (1) through an inlet branch pipe (14). The purified gas exhaust main pipe (5) is connected to the heat storage chamber (1) through a purified gas exhaust branch pipe (13). The cleaning main pipe (10) is connected to the heat storage chamber (1) through a cleaning branch pipe (15). A fan (6) is fixedly connected to the side wall of the purified gas exhaust main pipe (5). An exhaust pipe (7) is fixedly connected to the output end of the fan (6). The exhaust pipe (7) is connected to the cleaning main pipe (10). An airflow switching valve (4) is fixedly installed on the outside of the circulation pipeline (8), the purified gas exhaust branch pipe (13), the inlet branch pipe (14), and the cleaning branch pipe (15).

6. A regenerative thermal ignition (RTI) incineration device for industrial waste gas according to claim 5, characterized in that, A motor (11) is fixedly connected to the outside of the heat storage chamber (1), and one of the power shafts (16) is fixedly connected to the output end of the motor (11).

7. A method of operating a regenerative incineration treatment device for industrial exhaust gas according to claim 6, characterized in that, Includes the following steps: S1. First, start the fan (6) and open the airflow switching valve (4) connected to the exhaust gas inlet branch pipe (14) connected to one of the heat storage chambers (1) and the airflow switching valve (4) of the circulation pipe (8). The organic waste gas enters the heat storage chamber (1) through the exhaust gas inlet main pipe (9) - exhaust gas inlet branch pipe (14). The organic waste gas passes through the ceramic heat storage body (21) from bottom to top and enters the combustion chamber (2) along the circulation pipe (8). S2. Inject natural gas and fresh air into the combustion chamber (2) to start oxidation combustion and stabilize the exhaust gas at 750℃-850℃; S3. The VOCs in the organic waste gas undergo a complete oxidation reaction with oxygen, decomposing into carbon dioxide and water, and releasing a large amount of heat. S4. Open the airflow switching valve (4) of the circulation pipe (8) connected to another heat storage chamber (1) and the airflow switching valve (4) of the purified gas exhaust branch pipe (13). After the oxidation reaction is completed, the high-temperature purified gas leaves the combustion chamber (2) and enters the heat storage chamber (1) downwards. When the high-temperature gas flows through the ceramic heat storage body (21) in the heat storage chamber (1), it transfers the heat contained in it to the ceramic heat storage body (21). The ceramic heat storage body (21) absorbs heat and the temperature rises sharply, while the purified gas itself is cooled. The cooled clean gas is discharged through the purified gas exhaust branch pipe (13) - purified gas exhaust main pipe (5) - fan (6) - exhaust pipe (7). S5. Open the airflow switching valve (4) of the cleaning main pipe (10) connected to the last heat storage chamber (1) and the airflow switching valve (4) of the exhaust gas inlet branch pipe (14). A small portion of the cooled purified gas is blown back into this heat storage chamber (1) to "push" the remaining, untreated original exhaust gas back to the inlet end. S6. Change all other airflow switching valves (4) to start the next cycle, thereby achieving continuous, efficient and energy-saving operation.

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