CN110864312A - Integrated three-box RTO waste gas treatment device and method - Google Patents

Abstract

The invention provides an integrated three-box RTO waste gas treatment device, comprising a first regenerator, a second regenerator, a third regenerator, an oxidation chamber and an air duct; wherein the air duct is arranged at the bottom of the device, and the first regenerator A regenerator and a third regenerator are arranged at both ends of the air duct at intervals, the second regenerator is arranged in the middle of the air duct, the first regenerator, the second regenerator and the third regenerator are The upper ends are connected through the oxidation chamber; the first regenerator, the second regenerator, the oxidation chamber and the air duct jointly define a first accommodation space, and the first accommodation space is provided with a first poppet valve group, a burner and a control cabinet The second regenerator, the third regenerator, the oxidation chamber and the air duct jointly define a second accommodating space, and the second accommodating space is provided with a second lifting valve group and a third lifting valve group. The device of the present invention has a simple structure, the main body of the device does not need to be assembled on site, the cost of manufacture, transportation, installation and maintenance is low, and it has a self-cleaning function, and the exhaust gas treatment effect is better.

Description

An integrated three-box RTO waste gas treatment device and method

technical field

The invention belongs to the technical field of environmental protection, and in particular relates to an integrated three-box RTO waste gas treatment device and method.

Background technique

At present, although the general volatile organic compound (VOCs) waste gas treatment devices and methods in my country can reduce waste gas emissions and reduce environmental pollution to a certain extent, there is still a need for more efficient, fast, and low-energy consumption methods for waste gas treatment. Therefore, it is also necessary for those skilled in the art to develop a more effective technology for VOCs waste gas treatment to reduce environmental pollution to a greater extent.

In the prior art, regenerative oxidation furnace (RTO) is a commonly used waste gas treatment device. Its principle is to oxidize VOCs in waste gas into corresponding oxides and water at high temperature, thereby purifying waste gas and recycling waste gas for decomposition the heat released. Existing RTO exhaust gas treatment devices generally have two or three regenerators, that is, two or three tanks of RTO.

However, the existing three-box RTO waste gas treatment device has the following defects: 1. It is generally a complete set of large-scale engineering equipment, which is bulky and difficult to transport as a complete set. It needs to be split into various components for transportation, which is costly and time-consuming; 2 . Due to the large size of the equipment, the cost of manufacturing materials is high, and the area is large and the structure is complex; 3. Due to the disassembly and transportation of components, the equipment needs to be assembled and debugged on site, which is difficult to quality control, high labor costs, time-consuming, and later maintenance. high cost.

In addition, the integrated two-box RTO exhaust gas treatment device in the Chinese invention patent application CN109539282A has the following defects: 1. The equipment does not have a self-cleaning function when recycling the exhaust gas, resulting in the residual exhaust gas during the valve switching process in the regenerator. 2. In view of its treatment efficiency, its application range is limited, and it can deal with relatively few working conditions.

SUMMARY OF THE INVENTION

In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a self-cleaning integrated three-box RTO waste gas treatment device, which has a simple structure, the main body of the device does not need on-site assembly, and the manufacturing, transportation, installation and maintenance costs are low, and With self-cleaning function, the exhaust gas treatment effect is better.

In order to achieve the above object, on the one hand, the present invention provides an integrated three-box RTO exhaust gas treatment device, comprising a first regenerator, a second regenerator, a third regenerator, an oxidation chamber and an air duct; The duct is arranged at the bottom of the device, the first regenerator and the third regenerator are arranged at both ends of the air duct at intervals, the second regenerator is arranged in the middle of the air duct, the first regenerator, the second regenerator The upper end of the chamber and the third regenerator are connected through the oxidation chamber; the first regenerator, the second regenerator, the oxidation chamber and the air duct jointly define a first accommodating space, and a first lift is arranged in the first accommodating space A valve group, a burner and a control cabinet; the second regenerator, the third regenerator, the oxidation chamber and the air duct jointly define a second accommodating space, and the second accommodating space is provided with a second poppet valve group and a third Poppet valve block.

Further, the first regenerator, the second regenerator and the third regenerator are respectively provided with a heat storage device and a fresh air inlet. Among them, the heat storage device is used for heating the low temperature gas, cooling the high temperature gas and storing its heat. The low-temperature gas here refers to the gas whose temperature is lower than that of the thermal storage device, and the high-temperature gas refers to the gas whose temperature is higher than that of the thermal storage device. The fresh air inlet is used to blow fresh air into the regenerator to discharge the residual waste gas during the valve switching process, so as to achieve the purpose of self-cleaning.

Further, the air duct of the self-cleaning integrated three-box RTO waste gas treatment device of the present invention includes an air inlet air duct and an air outlet air duct, the first poppet valve group includes a first inlet valve and a first outlet valve; the second The poppet valve group includes a second inlet valve and a second outlet valve; the third poppet valve group includes a third inlet valve and a third outlet valve; wherein, one end of the air inlet duct passes through the first inlet valve and the lower end of the first regenerator The middle part is connected to the inlet of the lower end of the second regenerator through the second inlet valve, and the other end is connected to the inlet of the lower end of the third regenerator through the third inlet valve; It is connected to the outlet of the lower end of the first regenerator, the middle part is connected to the outlet of the lower end of the second regenerator through the second outlet valve, and the other end is connected to the outlet of the lower end of the third regenerator through the third outlet valve.

Further, the fresh air inlet is located at the lower end of the regenerator and is connected to the fresh air device, so that the residual gas in the regenerator can be driven upwards to the oxidation chamber as much as possible, and then discharged after being processed by the oxidation chamber.

Further, an external fan is connected upstream of the air inlet duct and/or downstream of the air outlet duct for blowing the exhaust gas to be treated into the device and/or sucking the treated exhaust gas out of the device.

Further, the integrated RTO exhaust gas treatment device of the present invention innovatively places the poppet valve vertically, effectively reducing the space of the device in the width direction, making the overall structure more compact, effectively waterproof, and convenient for transportation.

Further, the air duct inlet and the air duct outlet can be located on the same side of the air duct, or can be located on different sides of the air duct, and two different setting methods can be flexibly selected according to actual needs.

Further, due to the reasonable space layout, the present invention forms a larger first accommodating space, so that the control cabinet can be integrated inside the equipment, the structure is compact, the floor space is reduced, the transportation is convenient, and the cost is saved.

Further, at least a part of the fuselage of the burner is arranged in the first accommodating space, and is inserted into the oxidation chamber obliquely upward (preferably 45 degrees obliquely upward) from the first accommodating space, which facilitates equipment integration and has a compact structure. .

Further, the accommodating space is provided with a canopy, which can be freely retracted and effectively protected from rain.

Further, the present invention arranges the inlet and outlet air ducts in parallel at the bottom of the device, and uses the upper surface of the air duct as the control cabinet, the support surface of the lift valve group and the maintenance aisle, which saves equipment space, reduces air duct resistance, and effectively saves energy. The maintenance aisle is made of aluminum grille, which is safe and beautiful, and has strong weather resistance.

On the other hand, the present invention provides a method for treating exhaust gas using the above-mentioned self-cleaning integrated three-box RTO exhaust gas treatment device, that is, an operation method of the above-mentioned device, and the steps are as follows:

Step 1. Turn on the external fan, so that the exhaust gas to be treated flows into the air inlet duct through the inlet of the air inlet duct;

Step 2: Open the first inlet valve and close the second inlet valve and the third inlet valve, open the second outlet valve and close the first outlet valve and the third outlet valve at the same time, so that the low-temperature waste gas to be treated in the air inlet duct flows into the first outlet. A regenerator in which the low-temperature waste gas to be treated is heated by the heat storage device in the first regenerator to form a high-temperature waste gas to be treated; the high-temperature waste gas to be treated continues in the oxidation chamber through a burner The temperature rises to the reaction temperature and is oxidized to form high-temperature treated exhaust gas; the high-temperature treated exhaust gas cools down in the second regenerator and transfers its heat to the heat storage device in the second regenerator to form low-temperature treated exhaust gas ; The low-temperature treated exhaust gas is discharged to the outside through the outlet at the lower end of the second regenerator and the air outlet; during this process, the third regenerator can be blown into fresh air through the fresh air inlet at the lower end, and the third regenerator The residual waste gas in the oxidizing chamber is blown into the oxidation chamber, and after the oxidation treatment, it is discharged through the second regenerator and the air outlet air duct;

Step 3. Open the second inlet valve and close the first inlet valve and the third inlet valve, open the third outlet valve and close the first outlet valve and the second outlet valve at the same time, so that the low-temperature waste gas to be treated in the air inlet duct flows into the first outlet valve. Two regenerators, the low-temperature waste gas to be treated is heated in the second regenerator by the heat storage device in the second regenerator to form high-temperature waste gas to be treated; The temperature rises to the reaction temperature and is oxidized to form high-temperature treated exhaust gas; the high-temperature treated exhaust gas cools down in the third regenerator and transfers its heat to the heat storage device in the third regenerator to form low-temperature treated exhaust gas ; The low-temperature treated exhaust gas is discharged to the outside through the outlet at the lower end of the third regenerator and the air outlet duct; during this process, the first regenerator can be blown into fresh air through the fresh air inlet at the lower end to blow the first regenerator The residual gas in the oxidizing chamber is blown into the oxidation chamber, and after the oxidation treatment, it is discharged through the third regenerator and the air outlet;

Step 4. Open the third inlet valve and close the first inlet valve and the second inlet valve, open the first outlet valve and close the second outlet valve and the third outlet valve at the same time, so that the low-temperature waste gas to be treated in the air inlet duct flows into the first outlet valve. Three regenerators, the low-temperature waste gas to be treated is heated in the third regenerator by the heat storage device in the third regenerator to form high-temperature waste gas to be treated; the high-temperature waste gas to be treated continues in the oxidation chamber through the burner The temperature rises to the reaction temperature and is oxidized to form high-temperature treated exhaust gas; the high-temperature treated exhaust gas cools down in the first regenerator and transfers its heat to the heat storage device in the first regenerator to form low-temperature treated exhaust gas ; The low-temperature treated exhaust gas is discharged to the outside through the outlet at the lower end of the first regenerator and the air outlet duct; during this process, the second regenerator can blow fresh air through the fresh air inlet at the lower end to blow the second regenerator The residual gas in the oxidizing chamber is blown into the oxidation chamber, and after the oxidation treatment, it is discharged through the first regenerator and the air outlet;

Step 5. Repeat the above three steps to continuously process the exhaust gas and output it stably.

In the above method, the exhaust gas flows alternately in the first regenerator, the second regenerator and the third regenerator, and the heat generated during the oxidation process is also in the first regenerator, the second regenerator and the third regenerator. Alternate storage in regenerators, so heat loss is small and energy efficiency is high.

Further, the order of step 2-step 3-step 4 in the above method can also be step 3-step 4-step 2 or step 4-step 2-step 3, that is, the low-temperature waste gas to be treated can flow into the first step. One regenerator or the second regenerator or the third regenerator, and then alternately flow in the three regenerators.

Further, each time the exhaust gas is treated, there is a regenerator that can be self-cleaned by introducing fresh air, and the residual gas in it is discharged, so that the purification rate is higher and the treatment effect is better. Because the self-cleaning regenerator will be discharged as waste gas in the next step, if the residual gas in it is not removed, it will be directly discharged to the outside in the next step, thus affecting the treatment effect.

The beneficial technical effects of the present invention are at least manifested in the following aspects:

1. A high degree of integration is achieved, and the three-box RTO complete set of equipment that needs to be assembled on site in the prior art is integrated into a single device through innovative spatial arrangement, without on-site assembly, which improves the installation efficiency and reduces the user's installation cost.

2. The key point of the spatial arrangement of the present invention is to form a sufficient accommodating space in the device for accommodating necessary equipment components such as valve block, control cabinet, and burner, thereby realizing a compact structure.

3. Innovatively integrate three regenerators into a limited space for combination. Each regenerator can be self-cleaning when it is idle. Compared with two-box RTO equipment, the purification rate of exhaust gas is improved, and the treatment effect is improved. Better, improve the overall processing efficiency of the equipment.

4. The self-cleaning integrated three-box RTO waste gas treatment device of the present invention has a compact structure, a small volume, is convenient for transportation, and reduces the transportation cost of the user. The size of the device of the present invention is similar to that of a standard container, and can be transported by a container truck.

5. The device of the present invention is simple in structure, easy to operate, and reduces the operation and maintenance cost of the user; the exhaust gas treatment effect is good, the energy efficiency is high, and the energy consumption cost of the user is reduced.

Description of drawings

1 is a schematic structural diagram of a self-cleaning integrated three-box RTO waste gas treatment device according to a preferred embodiment of the present invention;

2 is a schematic structural diagram of a self-cleaning integrated three-box RTO waste gas treatment device according to a preferred embodiment of the present invention;

3 is a schematic diagram of the distribution of poppet valves of the self-cleaning integrated three-box RTO exhaust gas treatment device according to a preferred embodiment of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below. The following embodiments are implemented on the premise of the technical solutions of the present invention, and provide detailed embodiments and specific operation processes, but the protection scope of the present invention is not limited to the following example.

As shown in FIG. 1, in a preferred embodiment of the present invention, the integrated three-box RTO exhaust gas treatment device of the present invention includes a first regenerator 1, a second regenerator 2, a third regenerator 3, Oxidation chamber 4 and air duct 5. The air duct 5 is arranged at the bottom of the device, the first regenerator 1 and the third regenerator 3 are arranged at both ends of the air duct 5 at intervals, and the second regenerator 2 is arranged in the middle of the air duct 5. The upper ends of a regenerator 1, a second regenerator 2 and a third regenerator 3 are connected by an oxidation chamber 4; the first regenerator 1, the second regenerator 2, the oxidation chamber 4 and the air duct 5 jointly define The first accommodating space 11 is provided with a first poppet valve group 6 (identified as the first inlet valve in the first poppet valve group 6 in the figure), a burner 10 and a control cabinet 9 . The second regenerator 2, the third regenerator 3, the oxidation chamber 4 and the air duct 5 together define a second accommodating space 12, and the second accommodating space 12 is provided with a second poppet valve group 7 (marked as The second inlet valve in the second poppet valve group 7) and the third poppet valve group 8 (identified as the third inlet valve in the third poppet valve group 8 in the figure). In order to make the structure of the accommodating space 11 more compact, at least a part of the body of the burner 10 is arranged in the first accommodating space 11, and the first accommodating space 11 is inserted into the first accommodating space 11 obliquely upward (preferably at an angle of 45 degrees obliquely upward). Room 4.

As shown in FIG. 2, in a preferred embodiment of the present invention, in order to enhance the waterproofness of the accommodating space 11, the accommodating space 11 is provided with a canopy (not shown in the figure), which can be freely retracted and effectively prevent Rain; in order to enhance the weather resistance and maintainability of the accommodating space 11, the accommodating space 11 is provided with a maintenance aisle 12 made of patterned aluminum grilles, which is safe and beautiful, and has strong weather resistance.

As shown in FIG. 3, in a preferred embodiment of the present invention, the air duct 5 of the integrated RTO exhaust gas treatment device of the present invention includes an air inlet air duct 51 and an air outlet air duct 52, and the first poppet valve group 6 includes The first inlet valve 61 and the first outlet valve 62; the second poppet valve group 7 includes the second inlet valve 71 and the second outlet valve 72; the third poppet valve group 8 includes the third inlet valve 81 and the third outlet valve 82; One end of the air inlet duct 51 is connected to the inlet of the lower end of the first regenerator 1 through the first inlet valve 61, the middle part is connected to the inlet of the lower end of the second regenerator 2 through the second inlet valve 71, and the other end is connected to the inlet of the lower end of the second regenerator 2 through the second inlet valve 71. The three inlet valves 81 are connected to the inlet of the lower end of the third regenerator 3; The outlets at the lower ends of the two regenerators 2 are connected, and the other ends are connected to the outlets at the lower end of the third regenerator 3 through the third outlet valve 82 .

The invention innovatively places the lift valve vertically, effectively reducing the space of the device in the width direction, making the overall structure more compact, effectively waterproof and convenient for transportation.

In a preferred embodiment of the present invention, when the integrated RTO exhaust gas treatment device of the present invention is in operation, the operation method is as follows:

Step 1. Turn on the external fan so that the exhaust gas to be treated flows into the air inlet duct 51 through the inlet of the air inlet duct 51;

Step 2. Open the first inlet valve 61 and close the second inlet valve 71 and the third inlet valve 81, open the second outlet valve 72 and close the first outlet valve 62 and the third outlet valve 82, so that the The low-temperature waste gas to be treated flows into the first regenerator 1, and the low-temperature waste gas to be treated is heated in the first regenerator 1 by the heat storage device in the first regenerator 1 to form high-temperature waste gas to be treated; The waste gas to be treated is continuously heated up to the reaction temperature by the burner 10 in the oxidation chamber 4 to be oxidized to form a high-temperature treated exhaust gas; the high-temperature treated exhaust gas is cooled in the second regenerator 2 and transfers its heat to the second storage The heat storage device in the regenerator 2 forms low-temperature treated exhaust gas; the low-temperature treated exhaust gas is discharged to the outside through the outlet at the lower end of the second regenerator 2 and the air outlet duct 52; in this process, the third regenerator 3. Fresh air can be blown in through the fresh air inlet at the lower end, and the residual gas in the third regenerator 3 is blown into the oxidation chamber 4, and after the oxidation treatment, it is discharged through the second regenerator 2 and the air outlet duct 52;

Step 3. Open the second inlet valve 71 while closing the first inlet valve 61 and the third inlet valve 81 , open the third outlet valve 82 and close the first outlet valve 62 and the second outlet valve 72 at the same time, so that the air intake duct 51 The low-temperature waste gas to be treated flows into the second regenerator 2, and the low-temperature waste gas to be treated is heated in the second regenerator 2 by the heat storage device in the second regenerator 2 to form high-temperature waste gas to be treated; In the oxidation chamber 4, the exhaust gas to be treated is continuously heated up to the reaction temperature by the burner 10 to be oxidized, forming a high-temperature treated exhaust gas; the high-temperature treated exhaust gas is cooled in the third regenerator 3 and transfers its heat to the third storage The heat storage device in the regenerator 3 forms low-temperature treated exhaust gas; the low-temperature treated exhaust gas is discharged to the outside through the outlet at the lower end of the third regenerator 3 and the air outlet duct 52; in this process, the first regenerator 1. Fresh air can be blown in through the fresh air inlet at the lower end, and the residual gas in the first regenerator 1 is blown into the oxidation chamber 4, and after the oxidation treatment, it is discharged through the third regenerator 3 and the air outlet duct 52;

Step 4. Open the third inlet valve 81 while closing the first inlet valve 61 and the second inlet valve 71 , open the first outlet valve 62 and close the second outlet valve 72 and the third outlet valve 82 at the same time, so that the air inlet duct 51 is in the air. The low-temperature waste gas to be treated flows into the third regenerator 3, and the low-temperature waste gas to be treated is heated in the third regenerator 3 by the heat storage device in the third regenerator 3 to form high-temperature waste gas to be treated; In the oxidation chamber 4, the exhaust gas to be treated is continuously heated up to the reaction temperature by the burner 10 to be oxidized to form a high-temperature treated exhaust gas; the high-temperature treated exhaust gas is cooled in the first regenerator 1 and transfers its heat to the first storage The heat storage device in the regenerator 1 forms low-temperature treated exhaust gas; the low-temperature treated exhaust gas is discharged to the outside through the outlet at the lower end of the first regenerator 1 and the air outlet duct 52; in this process, the second regenerator 2. Fresh air can be blown in through the fresh air inlet at the lower end, and the residual gas in the second regenerator 2 is blown into the oxidation chamber 4, and after the oxidation treatment, it is discharged through the first regenerator 1 and the air outlet duct 52;

Step 5. Repeat the above three steps to continuously process the exhaust gas and output it stably.

In the above method, the exhaust gas flows alternately in the first regenerator 1, the second regenerator 2 and the regenerator 3, and the heat generated during the oxidation process is also in the first regenerator 1 and the second regenerator. 2 and the regenerator 3 are alternately stored in sequence, so the heat loss is small and the energy efficiency is high. Obviously, the sequence of step 2-step 3-step 4 in the above method can also be step 3-step 4-step 2 or step 4-step 2-step 3, that is, the low-temperature waste gas to be treated can flow into the first The regenerator 1 or the second regenerator 2 or the third regenerator 3 then alternately flow in the three regenerators 1 , 2 and 3 .

The preferred embodiments of the present invention have been described in detail above. It should be understood that many modifications and changes can be made according to the concept of the present invention by those skilled in the art without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited tests on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims.

Claims (10)

1. an integrated three-box RTO waste gas treatment device, characterized in that the device comprises a first regenerator, a second regenerator, a third regenerator, an oxidation chamber and an air duct; wherein, the air duct It is arranged at the bottom of the device, the first regenerator and the third regenerator are arranged at both ends of the air duct at intervals, and the second regenerator is arranged in the middle of the air duct , the upper ends of the first regenerator, the second regenerator and the third regenerator are connected through the oxidation chamber; the first regenerator, the second regenerator, the The oxidation chamber and the air duct jointly define a first accommodating space, and the first accommodating space is provided with a first poppet valve group, a burner and a control cabinet; the second regenerator, the The three regenerators, the oxidation chamber and the air duct jointly define a second accommodating space, and the second accommodating space is provided with a second poppet valve group and a third poppet valve group. 2. The integrated three-box RTO waste gas treatment device according to claim 1, wherein the air duct comprises an air inlet air duct and an air outlet air duct, and the first poppet valve group comprises a first inlet valve and a a first outlet valve; the second poppet valve group includes a second inlet valve and a second outlet valve; the third poppet valve group includes a third inlet valve and a third outlet valve; wherein, the air inlet duct One end is connected to the inlet of the lower end of the first regenerator through the first inlet valve, the middle part is connected to the inlet of the lower end of the second regenerator through the second inlet valve, and the other end is connected to the inlet of the lower end of the second regenerator The valve is connected to the inlet of the lower end of the third regenerator; one end of the air outlet duct is connected to the outlet of the lower end of the first regenerator through the first outlet valve, and the middle part is through the second outlet valve It is connected with the outlet at the lower end of the second regenerator, and the other end is connected with the outlet at the lower end of the third regenerator through the third outlet valve. 3. The integrated three-box RTO exhaust gas treatment device according to claim 1 or 2, wherein the first regenerator, the second regenerator and the third regenerator are respectively provided with A heat storage device and a fresh air inlet, wherein the heat storage device is used for heating the low-temperature gas, cooling the high-temperature gas and storing its heat; the fresh air inlet is used for blowing fresh air into the regenerator , in order to discharge the residual waste gas during the valve switching process, so as to achieve the purpose of self-cleaning. 4 . The integrated three-box RTO exhaust gas treatment device according to claim 3 , wherein the fresh air inlet is located at the lower end of the regenerator and is connected to the fresh air device. 5 . 5. The integrated three-box RTO waste gas treatment device according to claim 4, wherein an external fan is connected upstream of the air inlet duct and/or downstream of the air outlet The treated exhaust gas is blown into the device and/or the treated exhaust gas is sucked out of the device. 6. The integrated three-box RTO exhaust gas treatment device according to claim 1 or 2, wherein at least a part of the fuselage of the burner is arranged in the first accommodating space, and is controlled by the first accommodating space. An accommodating space is inserted into the oxidation chamber obliquely upward at 45 degrees. 7. The integrated three-box RTO exhaust gas treatment device according to claim 1 or 2, wherein the upper surface of the air duct serves as the control cabinet, the first poppet valve group, and the second poppet valve block And the support surface of the third poppet valve group and the maintenance aisle, the maintenance aisle is made of patterned aluminum grille. 8. The integrated three-box RTO waste gas treatment device according to claim 1 or 2, characterized in that the transportation height of the device does not exceed 4.2 meters, and the transportation width does not exceed 4.2 meters. 9. A method of utilizing the integrated RTO exhaust gas treatment device of claim 5 for treating exhaust gas, wherein the method comprises the steps of: Step 1. Turn on the external fan, so that the waste gas to be treated flows into the air inlet duct through the inlet of the air inlet duct; Step 2. Open the first inlet valve and close the second inlet valve and the third inlet valve, open the second outlet valve and close the first outlet valve and the third outlet valve at the same time, so that The low-temperature waste gas to be treated in the air inlet duct flows into the first regenerator, and the low-temperature waste gas to be treated is heated by the heat storage device in the first regenerator in the first regenerator, The high-temperature waste gas to be treated is formed; the high-temperature waste gas to be treated is continuously heated up to the reaction temperature by the burner in the oxidation chamber to be oxidized to form the high-temperature processed waste gas; the high-temperature processed waste gas is stored in the second heat storage The temperature is lowered in the chamber and its heat is transferred to the heat storage device in the second heat storage chamber to form low-temperature treated exhaust gas; the low-temperature treated exhaust gas passes through the outlet at the lower end of the second heat storage chamber and the outlet air The air duct is discharged to the outside; in this process, the third regenerator can blow fresh air through the fresh air inlet at the lower end, and the residual gas in the third regenerator is blown into the oxidation chamber, and after the oxidation treatment Exhaust through the second regenerator and the air outlet; Step 3. Open the second inlet valve and close the first inlet valve and the third inlet valve, open the third outlet valve and close the first outlet valve and the second outlet valve at the same time, so that The low-temperature waste gas to be treated in the air inlet duct flows into the second regenerator, and the low-temperature waste gas to be treated is heated by the heat storage device in the second regenerator in the second regenerator, The high-temperature waste gas to be treated is formed; the high-temperature waste gas to be treated is continuously heated up to the reaction temperature by the burner in the oxidation chamber to be oxidized to form the high-temperature processed waste gas; the high-temperature processed waste gas is stored in the third heat storage The temperature is lowered in the chamber and its heat is transferred to the heat storage device in the third heat storage chamber to form low-temperature treated exhaust gas; the low-temperature treated exhaust gas passes through the outlet at the lower end of the third heat storage chamber and the outlet air The air duct is discharged to the outside; in this process, the first regenerator can blow fresh air through the fresh air inlet at the lower end, and the residual gas in the first regenerator is blown into the oxidation chamber, and after the oxidation treatment Exhaust through the third regenerator and the air outlet; Step 4. Open the third inlet valve and close the first inlet valve and the second inlet valve, open the first outlet valve and close the second outlet valve and the third outlet valve at the same time, so that The low-temperature exhaust gas to be treated in the air inlet duct flows into the first regenerator, and the low-temperature exhaust gas to be treated is heated by the heat storage device in the third regenerator in the third regenerator, The high-temperature waste gas to be treated is formed; the high-temperature waste gas to be treated is continuously heated up to the reaction temperature by the burner in the oxidation chamber to be oxidized to form the high-temperature processed waste gas; the high-temperature processed waste gas is stored in the first heat storage The temperature is lowered in the chamber and its heat is transferred to the heat storage device in the first regenerator to form low-temperature treated exhaust gas; the low-temperature treated exhaust gas passes through the outlet at the lower end of the first regenerator and the outlet air The air duct is discharged to the outside; in this process, fresh air can be blown into the second regenerator through the fresh air inlet at the lower end, and the residual gas in the second regenerator can be blown into the oxidation chamber. Exhaust through the first regenerator and the air outlet; Step 5. Repeat the above three steps to continuously process the exhaust gas and output it stably. 10 . The method according to claim 9 , wherein the sequence of step 2 - step 3 - step 4 can also be step 3 - step 4 - step 2 or step 4 - step 2 - step 3. 11 .

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