Organic waste gas rto processing device and working method thereof

Abstract

This invention discloses an organic waste gas RTO (Regenerative Thermal Oxidizer) treatment device and its operating method, belonging to the field of organic waste gas purification and treatment technology. It includes a heat treatment component and a return gas component. The heat treatment component includes a first heat exchange module and a second heat exchange module for heat storage or release, and a combustion chamber connected to both. The return gas component includes a return gas reaction chamber and a return gas pipeline, with the return gas reaction chamber connected to the combustion chamber. The return gas pipeline is interconnected with the first heat exchange module, the second heat exchange module, and the return gas reaction chamber. The return gas pipeline is equipped with a first driving element for driving gas flow. The return gas pipeline can control the return gas reaction chamber to be connected to at least one of the first and second heat exchange modules, for introducing residual organic waste gas from the first and / or second heat exchange modules into the combustion chamber. This invention can perform return gas purging of the heat storage reaction chamber, avoiding direct discharge and atmospheric pollution.

Description

Technical Field

[0001] This invention relates to the field of organic waste gas purification and treatment technology, and in particular to an organic waste gas RTO treatment device and its working method. Background Technology

[0002] Among existing organic waste gas treatment technologies, the most commonly used is the three-chamber RTO, with some early devices being two-chamber RTOs. The working principle of a two-chamber RTO is as follows: organic waste gas is collected and enters the combustion chamber through the first regenerator chamber for high-temperature heating; then it exits through the second regenerator chamber while simultaneously being heated; when the set temperature is reached, a switching valve opens, and high-temperature oxidation and decomposition occur, with the waste gas then exiting through the first regenerator chamber while still being heated. This back-and-forth switching achieves purification of organic waste gas while fully utilizing thermal energy. However, during the switching process, some organic waste gas may be emitted untreated, hence the development of the three-chamber RTO. The three-chamber RTO operates on a similar principle to the two-chamber RTO, but with the addition of a regenerator chamber for cleaning. This method effectively prevents the escape of the very small amount of incompletely decomposed organic waste gas, resulting in better treatment performance.

[0003] The invention disclosed in CN213746781 U is a three-chamber RTO regenerative thermal oxidizer for waste gas incineration, which includes a three-chamber RTO, a pneumatic switching butterfly valve, and a waste heat recovery device. The top of the three-chamber RTO is respectively connected to explosion relief valve a and explosion relief valve b. The burner is installed inside the three-chamber RTO. The bottom of the three-chamber RTO includes a 1-chamber RTO, a 2-chamber RTO, and a 3-chamber RTO. The outlet ends of the 1-chamber RTO, the 2-chamber RTO, and the 3-chamber RTO are respectively connected to pneumatic switching butterfly valve d, pneumatic switching butterfly valve e, and pneumatic switching butterfly valve f.

[0004] Existing two-chamber RTOs cannot handle residual organic waste gas in the regenerator, easily leading to the escape and pollution of organic waste gas. On the other hand, three-chamber RTO devices have an overly complex structure, a high failure rate, and high cost. Summary of the Invention

[0005] In view of this, it is necessary to provide an organic waste gas RTO treatment device and its working method to solve the problem that the existing RTO has a complex structure and is not easy to treat residual organic waste gas.

[0006] In a first aspect, the present invention provides an apparatus for treating organic waste gas RTO, comprising:

[0007] A heat treatment assembly, comprising a first heat exchange module and a second heat exchange module for heat storage or heat release, and a combustion chamber connected to both;

[0008] A return gas assembly includes a return gas reaction chamber and a return gas pipeline. The return gas reaction chamber is connected to the combustion chamber. The return gas pipeline is connected to the first heat exchange module, the second heat exchange module, and the return gas reaction chamber. The return gas pipeline is provided with a first driving element for driving gas flow. The return gas pipeline can control the return gas reaction chamber to be connected to at least one of the first heat exchange module and the second heat exchange module, so as to introduce the residual organic waste gas in the first heat exchange module and / or the second heat exchange module into the combustion chamber.

[0009] Furthermore, the return gas pipeline includes a first pipe with one end connected to the first heat exchange module, a second pipe with one end connected to the second heat exchange module, and a third pipe with one end connected to the return gas reaction chamber. The free ends of the first pipe, the second pipe, and the third pipe are interconnected to form a three-way structure. Valves for opening and closing the pipeline are provided on the first pipe, the second pipe, and the third pipe. The first driving component is disposed on the third pipe.

[0010] Furthermore, the third pipe is provided with an exhaust pipe, and the exhaust pipe is provided with a valve for opening and closing the pipe.

[0011] Furthermore, the first heat exchange module includes a first heat storage reaction chamber and a first heat storage body. The first heat storage reaction chamber is connected to the combustion chamber, and the first heat storage body is disposed in the first heat storage reaction chamber.

[0012] Furthermore, the return gas reaction chamber is positioned between the heat storage reaction chambers of the first heat exchange module and the second heat exchange module, and the volume of the return gas reaction chamber is smaller than the volume of the first heat storage reaction chamber.

[0013] Furthermore, both the first and second heat exchange modules are equipped with temperature measuring components in their heat storage reaction chambers. The host computer is electrically connected to the temperature measuring components and each valve. The temperature measuring components can monitor the heat storage temperature of the heat storage reaction chamber, and the host computer can adjust the opening and closing of the valves according to the temperature changes to achieve the switching of different processes.

[0014] Furthermore, it also includes an air intake pipeline, which includes a main air intake pipe and two branch air intake pipes. The same end of the two branch air intake pipes is connected to the first heat exchange module and the second heat exchange module, respectively. One end of the main air intake pipe is connected to the other end of the two branch air intake pipes to form a three-way structure. The other end of the main air intake pipe is equipped with a blower for conveying organic waste gas. Both branch air intake pipes are equipped with valves for opening and closing the pipes.

[0015] Furthermore, it also includes an exhaust pipe, which includes an exhaust main pipe and two exhaust branch pipes. The same end of the two exhaust branch pipes is connected to the first heat exchange module and the second heat exchange module, respectively. One end of the exhaust main pipe is connected to the other end of the two exhaust branch pipes to form a three-way structure. Each of the two exhaust branch pipes is equipped with a valve for opening and closing the pipe.

[0016] Furthermore, the combustion chamber is provided with an inspection door, which is detachably connected to the combustion chamber.

[0017] Secondly, the present invention provides a method for operating an organic waste gas RTO treatment device, which includes the following steps in sequence:

[0018] Return gas cleaning I: The other end of the return gas reaction chamber, which is connected to the combustion chamber, is connected to the first heat exchange module. The hot gas flow that is decomposed by combustion in the combustion chamber flows through the return gas reaction chamber, the return gas pipeline, and the first heat exchange module in sequence and returns to the combustion chamber, so as to discharge the residual organic waste gas in the first heat exchange module into the combustion chamber.

[0019] Return gas scavenging II: The other end of the return gas reaction chamber, which is connected to the combustion chamber, is connected to the second heat exchange module. The hot gas flow that is decomposed by combustion in the combustion chamber flows through the return gas reaction chamber, the return gas pipeline, and the second heat exchange module in sequence and returns to the combustion chamber, discharging the residual organic waste gas in the second heat exchange module into the combustion chamber.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] (1) An organic waste gas RTO treatment device and its operating method according to the present invention include a return gas assembly, which includes a return gas reaction chamber and a return gas pipeline. The return gas reaction chamber is connected to a combustion chamber. The return gas pipeline is connected to a first heat exchange module, a second heat exchange module, and the return gas reaction chamber. A valve is provided on the return gas pipeline to control the opening and closing of the pipeline. The return gas pipeline can control the return gas reaction chamber to be connected to at least one of the first heat exchange module and the second heat exchange module. When the return gas reaction chamber is connected to the first heat exchange module through the return gas pipeline, the return gas pipeline can draw out residual organic waste gas from the first heat exchange module and input it into the combustion chamber through the return gas reaction chamber to complete the complete decomposition of the residual waste gas.

[0022] (2) The organic waste gas RTO treatment device and its working method of the present invention, the setting of the return gas component can eliminate the backflushing gas path, reduce the number of gas pipelines, valves and backflushing fans, simplify the structure and improve system stability. The return gas pipeline acts directly on the inside of the device, accelerating local gas flow and circulation. There is no backflushing gas injection, and no external cold air is introduced, which can reduce heat loss and improve thermal efficiency.

[0023] (3) The organic waste gas RTO treatment device and its working method of the present invention create a new process route in the process of using an organic waste gas RTO treatment device. The process route is "preheating - combustion - heat storage - gas return", which is different from the commonly used process route "preheating - combustion - heat storage - backflushing". The gas return process is completed by the gas return component, and the gas is circulated and returned internally within the device. There is no backflushing gas injection. When the residual organic waste gas in the heat exchange module is discharged, the amount of waste gas in the device remains unchanged, and the thermal efficiency is higher. The gas flow direction and path are stable, the waste gas is treated more fully, and the heat is stored more evenly. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the return air assembly in this invention;

[0027] Figure 3 This is a schematic diagram of the preheating structure of the first heat exchange module in this invention;

[0028] Figure 4 This is a schematic diagram of the preheating structure of the second heat exchange module in this invention;

[0029] Figure 5 This is a schematic diagram of the structure for treating residual waste gas after shutdown according to the present invention;

[0030] Figure 6 This is a schematic diagram of the cooling structure of the device after shutdown according to the present invention;

[0031] Figure 7 This is a schematic diagram of the decomposition and heat storage step I in this invention;

[0032] Figure 8 This is a schematic diagram of the structure of the return air cleaning step I in this invention;

[0033] Figure 9 This is a schematic diagram of the decomposition and heat storage step II in this invention;

[0034] Figure 10 This is a schematic diagram of the structure of the return air cleaning step II in this invention;

[0035] Figure 11 This is a schematic diagram of the exhaust structure of the present invention in the event of a malfunction. Figure 1 ;

[0036] Figure 12 This is a schematic diagram of the exhaust structure of the present invention in the event of a malfunction. Figure 2 ;

[0037] Figure 13 This is a flowchart of the working method in this invention;

[0038] In the figure, there are heat treatment components 1, first heat exchange module 11, first regenerator reaction chamber 111, first regenerator 112, second heat exchange module 12, second regenerator reaction chamber 121, second regenerator 122, combustion chamber 13, and inspection door 131.

[0039] Return gas assembly 2, return gas reaction chamber 21, return gas pipeline 22, first pipeline 221, second pipeline 222, third pipeline 223, exhaust pipeline 224;

[0040] Fan assembly 3, first drive component 31, second drive component 32;

[0041] Temperature measuring assembly 4, thermometer I 41, thermometer II 42, thermometer III 43, thermometer IV 44, thermometer V 45, thermometer VI 46;

[0042] Valve control assembly 5, valve a51, valve b52, valve c53, valve d54, valve e55, valve f56, valve g57, valve h58;

[0043] 6. Intake pipe; 61. Main intake pipe; 62. Branch intake pipe;

[0044] 7. Gas outlet pipe, 71. Gas outlet main pipe, 72. Detailed Implementation

[0045] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0046] This embodiment describes an organic waste gas RTO treatment device and its operating method, relating to the field of organic waste gas purification and treatment technology. It employs a layout configuration of two regenerative reaction chambers and one return gas reaction chamber 21, replacing existing three-chamber and two-chamber RTOs, to complete an organic waste gas treatment process route of "preheating – combustion – heat storage – return gas". Compared to existing technologies, only the return gas reaction chamber 21 and return gas pipeline 22 are needed to clean the residue remaining in the regenerative reaction chamber, avoiding direct discharge that pollutes the atmosphere.

[0047] Example 1: Structure of an organic waste gas RTO treatment device

[0048] Please see Figures 1 to 12This application provides an organic waste gas RTO treatment device, comprising: a heat treatment component 1 and a return gas component 2, wherein:

[0049] The heat treatment assembly 1 includes a first heat exchange module 11, a second heat exchange module 12, and a combustion chamber 13 connected to both. The first heat exchange module 11 and the second heat exchange module 12 can alternately store and release heat, recovering the heat from the decomposed gas and using this heat to heat the gas to be treated, thus achieving heat recovery and recycling. The combustion chamber 13 can heat the organic waste gas to a high temperature, decomposing the organic waste gas into CO2 and H2O.

[0050] The return gas assembly 2 includes a return gas reaction chamber 21 and a return gas pipeline 22. The return gas reaction chamber 21 is connected to the combustion chamber 13. The return gas pipeline 22 is interconnected with the first heat exchange module 11, the second heat exchange module 12, and the return gas reaction chamber 21. A valve is provided on the return gas pipeline 22 to control the opening and closing of the pipeline. The return gas pipeline 22 can control the return gas reaction chamber 21 to be connected to at least one of the first heat exchange module 11 and the second heat exchange module 12. A first driving member 31 is provided on the return gas pipeline 22, which can provide power for the gas flow, causing the gas to flow along a set path.

[0051] When the return gas reaction chamber 21 is connected to the first heat exchange module 11 via the return gas pipeline 22, the return gas pipeline 22 can draw out residual organic waste gas from the first heat exchange module 11 and input it into the combustion chamber 13 via the return gas reaction chamber 21, thus completing the complete decomposition of the residual waste gas. When the return gas reaction chamber 21 is connected to the second heat exchange module 12 via the return gas pipeline 22, the return gas pipeline 22 can draw out residual organic waste gas from the second heat exchange module 12 and input it into the combustion chamber 13 via the return gas reaction chamber 21, thus completing the complete decomposition of the residual waste gas. When the return gas reaction chamber 21 is simultaneously connected to the first heat exchange module 11 and the second heat exchange module 12 through the return gas pipeline 22, the return gas pipeline 22 can draw out the residual organic waste gas from the first heat exchange module 11 and the second heat exchange module 12 and input it into the combustion chamber 13 through the return gas reaction chamber 21 to complete the complete decomposition of the residual waste gas, and finally achieve the purpose of cleaning the residual organic waste gas in the heat exchange module, thus avoiding the direct discharge of organic waste gas into the atmosphere.

[0052] The inclusion of return gas assembly 2 eliminates the need for a backflush gas path, reducing the number of gas lines, valves, and backflush fans, simplifying the structure, and improving system stability. Return gas line 22 acts directly within the device, accelerating local gas flow and circulation. Without backflush gas injection, it avoids introducing external cold air, reducing heat loss and increasing thermal efficiency.

[0053] In some embodiments, please refer to Figure 1The return gas pipeline 22 includes a first pipe 221 connected to the first heat exchange module 11 at one end, a second pipe 222 connected to the second heat exchange module 12 at one end, and a third pipe 223 connected to the return gas reaction chamber 21 at one end. The free ends of the first pipe 221, the second pipe 222, and the third pipe 223 are interconnected to form a three-way structure. Each of the first pipe 221, the second pipe 222, and the third pipe 223 is equipped with a valve for opening and closing the pipeline. By controlling the opening and closing of the valves, the opening and closing of the first pipe 221, the second pipe 222, and the third pipe 223 can be controlled, thereby realizing the connection between the return gas reaction chamber 21 and the first heat exchange module 11, the second heat exchange module 12, or simultaneously with the first heat exchange module 11 and the second heat exchange module 12. In addition, a first driving member 31 is provided on the third pipe 223. The first driving member 31 can provide power for the flow of gas, promoting the movement of gas in the third pipe 223 relative to the return gas reaction chamber 21.

[0054] In a further embodiment, the third pipe 223 is provided with an exhaust pipe 224, and the exhaust pipe 224 is provided with a valve for opening and closing the pipe. The opening and closing of the valve can control the opening and closing of the exhaust pipe 224. When the organic waste gas is abnormal, the heat treatment component 1 can be bypassed and the abnormal waste gas can be discharged from the exhaust pipe 224, thereby protecting the first heat exchange module 11 and the second heat exchange module 12 from being affected and damaged.

[0055] In some embodiments, please continue to participate Figure 1 The first heat exchange module 11 includes a first heat storage reaction chamber 111 and a first heat storage body 112. The first heat storage reaction chamber 111 is connected to the combustion chamber 13, and the first heat storage body 112 is disposed in the first heat storage reaction chamber 111. The first heat storage body 112 is specifically made of ceramic packing. The second heat exchange module 12 has the same structure as the first heat exchange module 11. When gas passes through the two heat exchange modules, the gas can exchange heat with the heat storage body therein, completing the heat storage and heat release process of the heat storage body.

[0056] It should be noted that the return gas reaction chamber 21 is located between the heat storage reaction chambers of the first heat exchange module 11 and the second heat exchange module 12. The return gas reaction chamber 21 can be connected to the first heat exchange module 11 and the second heat exchange module 12 through the combustion chamber 13. When the organic waste gas flows between the first heat exchange module 11 and the second heat exchange module 12, the existence of dead airflow is eliminated, the waste gas will be treated more fully, and the heat will be stored more evenly. Compared with a three-chamber RTO device, the organic waste gas does not need to cross two chambers, which would cause inconsistencies in the flow direction and path of the organic waste gas, resulting in the incomplete utilization of heat and waste gas.

[0057] The volume of the return gas reaction chamber 21 is smaller than that of the first regenerative reaction chamber 111. The return gas reaction chamber 21 has a low participation in the high-temperature decomposition reaction of waste gas. The small volume of the return gas reaction chamber 21 can reduce the volume and weight of the entire device without reducing the decomposition efficiency of organic waste gas, making it easier to transport and install the device.

[0058] exist Figure 1 In this system, temperature measuring components 4 are installed on the heat storage reaction chambers of the first heat exchange module 11 and the second heat exchange module 12. The host computer is electrically connected to the temperature measuring components 4 and each valve. The temperature measuring components 4 can monitor the heat storage temperature of the heat storage reaction chamber. When a heat storage reaction chamber is lower than a set temperature, the temperature measuring component 4 senses it and sends a signal to the host computer. The host computer controls the opening and closing of the corresponding valve, causing the airflow flowing through the heat storage reaction chamber to reverse. The hotter airflow begins to heat and store heat in the heat storage reaction chamber, promoting a rise in temperature.

[0059] When a heat storage reaction chamber is above a set temperature, the temperature measuring component 4 senses it and sends a signal to the host computer. The host computer controls the corresponding valve to open or close, causing the airflow through the heat storage reaction chamber to reverse. The cooler airflow begins to absorb the heat from the heat storage reaction chamber, promoting a decrease in temperature.

[0060] It should be noted that the temperature measuring component 4 includes thermometers I 41, II 42, III 43, IV 44, V 45, and VI 46, which are installed on the heat storage reaction chamber. The thermometers are specifically industrial probe thermometers that can be inserted into the heat storage reaction chamber to monitor the temperature of the heat storage body inside the first heat exchange module 11 and the second heat exchange module 12.

[0061] Please continue reading. Figure 1 An organic waste gas RTO treatment device further includes an inlet pipe 6, which includes a main inlet pipe 61 and two branch inlet pipes 62. The same end of each branch inlet pipe 62 is connected to a first heat exchange module 11 and a second heat exchange module 12, respectively. One end of the main inlet pipe 61 is simultaneously connected to the other end of each branch inlet pipe 62, forming a three-way connection. The other end of the main inlet pipe 61 is equipped with a second driving component 32 for conveying organic waste gas. Each branch inlet pipe 62 is equipped with a valve for opening and closing the pipe. By controlling the opening and closing of the valves, organic waste gas can be input into the first heat exchange module 11 and the second heat exchange module 12, respectively, thus realizing the input of organic waste gas.

[0062] An organic waste gas RTO treatment device further includes an outlet pipeline 7, which includes an outlet main pipe 71 and two outlet branch pipes 72. The same end of the two outlet branch pipes 72 is connected to a first heat exchange module 11 and a second heat exchange module 12, respectively. One end of the outlet main pipe 71 is simultaneously connected to the other end of the two inlet branch pipes 72 to form a three-way structure. Each of the two outlet branch pipes 72 is equipped with a valve for opening and closing the pipeline. By controlling the opening and closing of the valves, the decomposed gas can be output from the first heat exchange module 11 and the second heat exchange module 12, respectively, to realize the output of gas.

[0063] It should be noted that the valves installed on the intake pipe 6, the exhaust pipe 7, and the return pipe 22 are all part of the valve control assembly 5. The valve control assembly includes valves a51, b52, c53, d54, e55, f56, g57, and h58. Specifically, the valves are pipeline butterfly valves, which can open and close the pipelines.

[0064] Meanwhile, both the first driving component 31 and the second driving component 32 are fans, which are part of the fan assembly 3 and are used to drive the airflow to move within the duct.

[0065] Please continue reading. Figure 1 The combustion chamber 13 is equipped with an inspection door 131, which is detachably connected to the combustion chamber 13. The inside of the combustion chamber 13 can be repaired and maintained through the inspection door 131, and fresh gas can also be introduced through the inspection door 131 to clean the exhaust gas of the two heat regenerators.

[0066] Example 2: Preheating and Cooling of the Heat Exchange Module

[0067] Please see Figure 3 Preheating of the first heat exchange module 11: The combustion system in the combustion chamber 13 is started, the first drive unit 31 is activated, valves e55 and g57 are opened, and all other devices are closed. At this time, the high-temperature gas in the combustion chamber 13 returns to the combustion chamber 13 from the first regenerator reaction chamber 111 via the first regenerator 112, valve e55, the first drive unit 31, valve g57, and the return gas reaction chamber 21. This cycle repeats, and the combustion chamber 13, the first regenerator reaction chamber 111, the first regenerator 112, and the return gas reaction chamber 21 are rapidly preheated. The preheating process is monitored by thermometers I 41, II 42, and III 43 until the preheating of the device is complete.

[0068] Please see Figure 4 Preheating of the second heat exchange module 12: Similarly, the combustion system in the combustion chamber 13 is started, the first drive unit 31 is started, valves f56 and g57 are opened, and all other devices are closed. The preheating of the second regenerative reaction chamber 121 can also be completed independently through feedback from thermometers IV44, V45, and VI46.

[0069] Please see Figure 5 The preheating of the first heat exchange module and the second heat exchange module is based on the same principle. Before the device is used, the combustion system in the combustion chamber 13 is started, the first drive unit 31 is started, valves e55, f56 and g57 are opened, and all other devices are closed, so that the entire heat treatment component 1 can be preheated.

[0070] In addition, during the shutdown process, the combustion system in combustion chamber 13 is kept running continuously, while all other devices are shut down. The organic waste gas in the first heat exchange module 11 and the second heat exchange module 12 is sent to the return gas reaction chamber 21 via the first drive component 31. The organic waste gas returning to combustion chamber 13 is decomposed at high temperature. With the timely feedback from thermometers III 43 and VI 46, it can be determined that all the organic waste gas remaining in the heat storage body has been treated.

[0071] Please see Figure 6 After the device is shut down, the maintenance door 131, valves e55, f56, and h58 are opened, the first drive unit 31 is activated, and all other devices are shut down. At this time, air enters the device body through the maintenance door 131, passes through valves e55 and f56, and is discharged from the first drive unit 31 to valve h58. Rapid cooling of the device is achieved through feedback from thermometers I 41, II 42, III 43, IV 44, V 45, and VI 46.

[0072] Example 3: Working method of an organic waste gas RTO treatment device

[0073] S1 Decomposition Heat Storage I: Please refer to Figure 7 With the first regenerative reaction chamber 111 or the entire main unit preheated, the combustion system in the combustion chamber 13 is activated, the second drive unit 32 is started, valves a51 and d54 are opened, and all other devices are closed. The main intake pipe 61 is connected to the first heat exchange module via the intake branch pipe 62, and the main exhaust pipe 71 is connected to the second heat exchange module via the exhaust branch pipe 72. Organic waste gas enters the first regenerative reaction chamber 111 through the valve a51 of the main intake pipe 61 and the exhaust branch pipe 72. The organic waste gas absorbs the heat stored in the first heat storage body 112, causing its temperature to rise. The high-temperature organic waste gas is further decomposed into CO2 and H2O in the combustion chamber 13. The treated gas enters the second heat storage body 122, which absorbs the heat from the high-temperature gas and stores it within itself. The cooled gas is discharged from the main exhaust pipe 71 through valve d54.

[0074] S2 Return Gas Cleaning I: Please refer to Figure 8By monitoring the feedback from thermometers I41, II42, III43, IV44, V45, and VI46, when the monitoring results show that in the decomposition and heat storage I process, the first heat storage body 112 has cooled down to below the set temperature, and the second heat storage body 122 has heated up to above the set temperature, the combustion system in the combustion chamber 13 is kept running, and the second drive unit 32 continues to work. At this time, valves a51 and d54 are closed, and valves b52, e55, and g57 are opened, and the first drive unit 31 is started. This allows the first heat exchange module to be connected to the return gas reaction chamber through the first and third pipes, and the intake main pipe 61 to be connected to the second heat exchange module through the intake branch pipe 62. The residual organic waste gas in the first heat storage reaction chamber 111 will pass through valve e55, the first drive unit 31, and valve g57 to the return gas reaction chamber 21, and finally undergo high-temperature decomposition in the combustion chamber 13.

[0075] In summary, this invention, by completing the two processes of decomposition and heat storage (I) and return gas purging (I), essentially creates a new process route: "preheating – combustion – heat storage – return gas," which differs from the commonly used "preheating – combustion – heat storage – backflushing." The return gas process is completed by the return gas assembly, achieving internal gas circulation within the device without backflushing gas injection. When discharging residual organic waste gas from the heat exchange module, the amount of waste gas generated during equipment operation remains constant, resulting in higher thermal efficiency. The gas flow direction and path are stable, leading to more thorough waste gas treatment and more uniform heat storage.

[0076] S3 Decomposition Heat Storage II: Please refer to Figure 9 After a set time period during the return gas purging process I, it is expected that the residual organic gas in the first regenerative reaction chamber 111 has been exhausted. Then, valve C53 is opened, and valves E55 and G57 are closed, stopping the first drive unit 31. This connects the main intake pipe 61 to the second heat exchange module via the intake branch pipe 62, and the main exhaust pipe 7 to the first heat exchange module 11 via the exhaust branch pipe 7. Organic waste gas enters the main intake pipe 61 from the second drive unit 32, passes through valve B52, and reaches the second regenerative reaction chamber 121. The organic waste gas absorbs the heat stored in the second heat storage body 122, causing its temperature to rise. The cooled gas is further decomposed into CO2 and H2O at high temperature in the combustion chamber 13. The treated gas enters the first regenerative reaction chamber 111, stores the heat in the first heat storage body 112, and is then discharged from valve C53 to the exhaust pipe 7.

[0077] S4 Return Air Cleaning II: Please refer to Figure 10By monitoring the feedback from thermometers I41, II42, III43, IV44, V45, and VI46, when the monitoring results show that in the decomposition and heat storage II process, the second heat storage body 122 has cooled down to below the set temperature, and the first heat storage body 112 has heated up to above the set temperature, the combustion system in the combustion chamber 13 is kept running, and the second drive unit 32 continues to work. At this time, valves b52 and c53 are closed, and valves a51, f56, and g57 are opened, and the first drive unit 31 is started. This allows the second heat exchange module to be connected to the return gas reaction chamber through the second and third pipes, and the intake main pipe 61 to be connected to the first heat exchange module through the intake branch pipe 62. The residual organic waste gas in the second heat storage body 122 passes through valve f56, the first drive unit 31, and valve g57 to the return gas reaction chamber 21, where the organic waste gas undergoes high-temperature decomposition in the combustion chamber 13.

[0078] Please see Figure 13 The operating method of an organic waste gas RTO treatment device includes the above four processes: decomposition and heat storage I – return gas purging I – decomposition and heat storage II – return gas purging II. After a set time in the return gas purging II process, valve d54 is opened, valves f56 and g57 are closed, and the first drive unit 31 is stopped. The system then returns to the decomposition and heat storage I process. Decomposition and heat storage I – return gas purging I – decomposition and heat storage II – return gas purging II constitute a complete cycle that can be repeated.

[0079] Example 4: Abnormal Exhaust Gas Treatment

[0080] When the device in this application experiences an abnormality in the treatment of organic waste gas, the following two solutions can be implemented:

[0081] Please see Figure 11 Open valves a51, e55, and h58, activate the second drive unit 32 and the first drive unit 31, and shut down the remaining devices. At this time, the abnormal organic waste gas is discharged directly from the return gas pipeline 22 without passing through the heat treatment component 1, and the protection device is not damaged.

[0082] Please see Figure 12 Open valves b52, f56, and h58, activate the second drive unit 32 and the first drive unit 31, and shut down the remaining devices. At this time, the abnormal organic waste gas is discharged directly from the return gas pipeline 22 without passing through the heat treatment component 1, and the protection device is not damaged.

[0083] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope indicated by the present invention should be included within the scope of the present invention.

Claims

1. A treatment device for organic waste gas RTO, characterized in that, include: A heat treatment assembly, comprising a first heat exchange module and a second heat exchange module for heat storage or heat release, and a combustion chamber connected to both; The gas return assembly includes a gas return reaction chamber and a gas return pipeline, the gas return reaction chamber being connected to the combustion chamber; the gas return pipeline is interconnected with the first heat exchange module, the second heat exchange module, and the gas return reaction chamber, and is equipped with a first driving element for driving gas flow; the gas return pipeline can control the gas return reaction chamber to be connected to at least one of the first and second heat exchange modules, so as to introduce residual organic waste gas in the first and / or second heat exchange modules into the combustion chamber; the gas return pipeline acts directly inside the device, accelerating local gas flow and circulation, without backflushing gas injection, and without introducing external cold air.

2. The organic waste gas RTO treatment device according to claim 1, characterized in that, The return gas pipeline includes a first pipe with one end connected to the first heat exchange module, a second pipe with one end connected to the second heat exchange module, and a third pipe with one end connected to the return gas reaction chamber. The free ends of the first pipe, the second pipe, and the third pipe are interconnected to form a three-way structure. Each of the first pipe, the second pipe, and the third pipe is equipped with a valve for opening and closing the pipeline. The first driving component is disposed on the third pipe.

3. The organic waste gas RTO treatment device according to claim 2, characterized in that, The third pipe is equipped with an exhaust pipe, and the exhaust pipe is equipped with a valve for opening and closing the pipe.

4. The organic waste gas RTO treatment device according to claim 1, characterized in that, The first heat exchange module includes a first heat storage reaction chamber and a first heat storage body. The first heat storage reaction chamber is connected to the combustion chamber, and the first heat storage body is disposed in the first heat storage reaction chamber.

5. The organic waste gas RTO treatment device according to claim 4, characterized in that, The return gas reaction chamber is located between the heat storage reaction chambers of the first heat exchange module and the second heat exchange module, and the volume of the return gas reaction chamber is smaller than the volume of the first heat storage reaction chamber.

6. The organic waste gas RTO treatment device according to claim 5, characterized in that, Temperature measuring components are provided on the heat storage reaction chambers of the first and second heat exchange modules. The host computer is electrically connected to the temperature measuring components and each valve. The temperature measuring components can monitor the heat storage temperature of the heat storage reaction chamber, and the host computer can adjust the opening and closing of the valves according to the temperature changes to realize the switching of different processes.

7. The organic waste gas RTO treatment device according to claim 1, characterized in that, It also includes an air intake pipeline, which includes a main air intake pipe and two branch air intake pipes. The same end of the two branch air intake pipes is connected to the first heat exchange module and the second heat exchange module, respectively. One end of the main air intake pipe is connected to the other end of the two branch air intake pipes to form a three-way structure. The other end of the main air intake pipe is equipped with a blower for conveying organic waste gas. Each of the two branch air intake pipes is equipped with a valve for opening and closing the pipe.

8. The organic waste gas RTO treatment device according to claim 1, characterized in that, It also includes an exhaust pipe, which includes an exhaust main pipe and two exhaust branch pipes. The same end of the two exhaust branch pipes is connected to the first heat exchange module and the second heat exchange module, respectively. One end of the exhaust main pipe is connected to the other end of the two exhaust branch pipes to form a three-way structure. Each of the two exhaust branch pipes is equipped with a valve for opening and closing the pipe.

9. The organic waste gas RTO treatment device according to claim 1, characterized in that, The combustion chamber is equipped with an inspection door, which is detachably connected to the combustion chamber.

10. The operating method of the organic waste gas RTO treatment device according to any one of claims 1-9, characterized in that, It includes the following steps in sequence: Return gas cleaning I: The other end of the return gas reaction chamber, which is connected to the combustion chamber, is connected to the first heat exchange module. The hot gas flow that is decomposed by combustion in the combustion chamber flows through the return gas reaction chamber, the return gas pipeline, and the first heat exchange module in sequence and returns to the combustion chamber, so as to discharge the residual organic waste gas in the first heat exchange module into the combustion chamber. Return gas scavenging II: The other end of the return gas reaction chamber, which is connected to the combustion chamber, is connected to the second heat exchange module. The hot gas flow that is decomposed by combustion in the combustion chamber flows through the return gas reaction chamber, the return gas pipeline, and the second heat exchange module in sequence and returns to the combustion chamber, discharging the residual organic waste gas in the second heat exchange module into the combustion chamber.

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