Ultralow-concentration gas heat accumulating type direct-combustion incineration device

Abstract

The invention relates to the field of gas combustion, and discloses an ultralow-concentration gas heat storage type direct combustion incinerator which comprises a first gas storage tank, an adsorption assembly, a second gas storage tank and a combustor, the adsorption assembly comprises a rack, an upper cover plate and a lower cover plate are arranged on the rack, and the axis of the upper cover plate and the axis of the lower cover plate are vertically arranged; a vertically-arranged rotating body is rotationally installed between the upper cover plate and the lower cover plate, a rotating shaft formed at the rotating installation position is in power connection with a motor, at least three installation holes are formed in the end face of the rotating body in a penetrating mode, the installation holes are formed in the circumferential direction of the rotating body in an array mode, and activated carbon is arranged in each installation hole. The end face of the upper cover plate is provided with a gas inlet, an air outlet and a gas outlet which are communicated with the three mounting holes respectively, when the motor drives the rotating body to rotate, the mounting hole communicated with the gas inlet can be sequentially communicated with the air outlet and the gas outlet, the end face of the lower cover plate is provided with a heat exchange opening, and the heat exchange opening and the gas outlet are coaxial.

Description

Technical Field

[0001] The present invention relates to the field of burners, in particular to the field of gas combustion, and in particular to an ultra-low concentration gas regenerative direct combustion incineration device. Background Art

[0002] Low-concentration gas is produced during coal mining. If this gas is directly discharged, it will cause air pollution. Therefore, this gas is generally burned.

[0003] Based on the search for low-concentration gas combustion, some existing technologies were found, which are now introduced one by one:

[0004] First, the Chinese invention patent application with publication number CN115076689A discloses a low-concentration gas combustion device that mixes low-concentration gas with liquefied petroleum gas and then burns the mixed gas. This combustion method, which adds a combustion medium, is costly and produces not only gas but also combustion medium during combustion. As a result, the amount of exhaust gas emitted during combustion is even greater, which needs to be improved.

[0005] Secondly, the Chinese invention patent with authorization announcement number CN110939933B discloses a low-concentration gas heat storage combustion system, which combines heat storage technology, microchannel catalytic combustion technology and low-concentration gas combustion technology. By continuously storing and reusing high-temperature flue gas, it achieves continuous preheating and reheating of low-temperature, low-concentration intake gas, and realizes efficient catalytic combustion of low-concentration gas in the microchannel combustion chamber. However, this heat storage combustion method has requirements for gas concentration. If the gas concentration is very low, then even with heat storage assistance, ultra-low concentration gas will be difficult to burn, which needs to be improved.

[0006] Based on the above, the present invention proposes an ultra-low concentration gas regenerative direct combustion incineration device. Summary of the Invention

[0007] In order to solve the problems mentioned in the above background, the present invention provides an ultra-low concentration gas regenerative direct combustion incineration device.

[0008] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows.

[0009] An ultra-low concentration gas regenerative direct combustion incineration device comprises a first gas storage tank, an adsorption component, a second gas storage tank and a burner;

[0010] The adsorption assembly includes a frame, on which an upper cover plate and a lower cover plate are arranged with their axis lines arranged vertically. A vertically arranged rotating body is rotatably installed between the upper cover plate and the lower cover plate, and a rotating shaft formed at the rotating installation position is dynamically connected to a motor arranged on the frame.

[0011] The end surface of the rotating body is provided with a mounting hole, and at least three mounting holes are arranged in an array along the circumference of the rotating body, and activated carbon is provided in each mounting hole;

[0012] The end surface of the upper cover is provided with a gas inlet, an air outlet, and a gas outlet, which are respectively connected to the three mounting holes. When the motor drives the rotating body to rotate, the mounting hole connected to the gas inlet can be connected to the air outlet and the gas outlet in sequence.

[0013] The end surface of the lower cover plate is provided with a heat exchange port, which is coaxial with the gas outlet.

[0014] As a further improvement and optimization of the present invention, a first air pump and a booster pump are provided on the frame, the air inlet end of the first air pump is connected to the air inlet pipe, and the air outlet end is connected to the air inlet of the first gas storage tank, the end of the air inlet pipe is used to receive ultra-low concentration gas, the air inlet end of the booster pump and the air outlet of the first gas storage tank are connected through the air outlet pipe, and the air outlet end of the booster pump and the gas inlet are connected through the air supply pipe.

[0015] As a further improvement and optimization of the present invention, a refrigeration pipeline is provided in the first gas storage tank.

[0016] As a further improvement and optimization of the present invention, a second air pump is provided on the frame, the air inlet end of the second air pump and the gas outlet are connected through an input pipe, the air outlet end of the second air pump and the air inlet of the second gas storage tank are connected through an output pipe, and a connecting pipe is provided at the air outlet of the second gas storage tank.

[0017] As a further improvement and optimization of the present invention, the burner includes a combustion chamber located below the heat exchange port, a combustion stove is provided in the combustion chamber, the upper end of the combustion chamber is open and is provided with a heat storage body, the lower end of the heat storage body can block the upper end of the combustion chamber, the upper end of the heat storage body extends into the heat exchange port and is provided with fins, and the outer surface of the combustion chamber is also connected to a smoke exhaust pipe and the connection is close to the upper end of the combustion chamber.

[0018] As a further improvement and optimization of the present invention, the end of the air outlet is connected to an exhaust pipe, and the end of the exhaust pipe is connected to a smoke exhaust pipe.

[0019] As a further improvement and optimization of the present invention, the combustion stove head includes an oxygen inlet, a combustion-supporting inlet and a gas receiving port. The oxygen inlet is used for the entry of air or oxygen, the combustion-supporting inlet is used for the entry of combustion-supporting medium, and the gas receiving port is connected to the connecting pipe and an electromagnetic valve is provided at the connection.

[0020] As a further improvement and optimization of the present invention, six mounting holes are arranged in an array along the circumferential direction of the rotating body. Initially, the positions of the six mounting holes are named A, B, C, D, E and F in sequence, and an auxiliary port is provided on the upper cover plate.

[0021] The gas inlet is connected to the mounting hole at position A, the air outlet is connected to the mounting hole at position C, the gas outlet is connected to the mounting hole at position E, and the auxiliary port is connected to the mounting hole at position F.

[0022] As a further improvement and optimization of the present invention, the auxiliary port and the air supply pipe are connected via an auxiliary pipe, and a second solenoid valve is provided on the auxiliary pipe.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This solution can realize the combustion of ultra-low concentration gas, on this basis:

[0025] 1. Because there is a position B between the gas inlet and the air outlet, after the activated carbon at position A receives a preset amount of ultra-low concentration gas at the gas inlet, it needs to pass through position B before reaching position C. Therefore, during this process, the activated carbon has enough time to complete the adsorption of gas components and does not need to wait at position A for adsorption to be completed, thus improving efficiency;

[0026] Furthermore, more B positions can be set to increase the adsorption time of activated carbon;

[0027] 2. There is a position D between positions C and E. The space where the activated carbon is located at position D is in a low-temperature state, so it can absorb heat. On the one hand, it acts as a heat insulator to prevent heat from being transferred to position C and causing some gas to be released and leaked. On the other hand, it acts as a preheating agent to gradually heat up the low-temperature state at position D, which is conducive to the subsequent rapid release of gas components.

[0028] 3. The activated carbon at position E is subjected to heating and negative pressure, which can prompt the activated carbon to release all the adsorbed gas components in a short time;

[0029] 4. When the activated carbon reaches position F after releasing the gas, the solenoid valve opens for a short while and then closes. The advantage is that a small amount of low-temperature, super-concentrated gas can be injected into the activated carbon at position F. The small amount of gas will cool the activated carbon, causing the surface and internal temperatures of the activated carbon to drop and remain roughly consistent. In addition, a small amount of gas will not cause surface adsorption saturation. Therefore, when the activated carbon reaches position A, the surface and internal temperatures of the activated carbon can be kept as consistent as possible, thereby enabling the surface and internal parts to reach adsorption saturation in a short time. This shortens the time it takes for the activated carbon to reach its maximum carrying capacity, which is beneficial to improving efficiency.

[0030] It should be noted that if there is no F position, then after releasing the gas components, the activated carbon will immediately reach the A position. When it receives a large amount of ultra-low concentration gas at one time, the activated carbon is in a high-temperature state and is surrounded by low-temperature gas. In this case, the surface of the activated carbon is easily cooled and adsorbs a large amount of gas components, reaching adsorption saturation, but the interior is still in a warm state and needs to gradually cool down over time. However, the saturated gas adsorption on the surface will hinder the gas from moving into the interior of the activated carbon. Therefore, the adsorption efficiency of the activated carbon is reduced, and it takes longer to reach adsorption saturation, resulting in poor efficiency.

[0031] 5. The method mentioned in 4 above, which is to add a small amount first and then a large amount, can make the activated carbon reach adsorption saturation in a short time. Before that, the heating and negative pressure method at position E can prompt the activated carbon to release all the adsorbed gas components in a short time. The two work together to form an integrated solution, which can further improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of Embodiment 1 of the present invention;

[0033] Figure 2 A schematic diagram of the connection between the first air storage tank, the first air pump, and the booster pump;

[0034] Figure 3 Schematic diagram of the connection between the second gas storage tank and the second air pump;

[0035] Figure 4 Schematic diagram of the adsorption assembly and the burner in Example 1;

[0036] Figure 5 This is an exploded view of the adsorption assembly in Example 1;

[0037] Figure 6 is a cross-sectional view of the adsorption assembly and the burner in Example 1;

[0038] Figure 7 This is a schematic diagram of Example 2;

[0039] Figure 8 This is an exploded view of Example 2.

[0040] The reference numerals in the accompanying drawings are:

[0041] 100. First gas storage tank; 101. Refrigeration pipe; 102. Air inlet pipe; 103. First air pump; 104. Air outlet pipe; 105. Booster pump; 106. Air supply pipe; 200. Adsorption assembly; 201. Exhaust pipe; 202. Rotating body; 203. Mounting hole; 204. Activated carbon; 205. Upper cover; 206. Lower cover; 207. Motor; 208. Gas inlet; 209. Air outlet; 210. Gas outlet; 211. Heat exchange port; 212. Auxiliary port; 213. Auxiliary pipe; 300. Second gas storage tank; 301. Input pipe; 302. Second air pump; 303. Output pipe; 304. Connecting pipe; 400. Burner; 401. Exhaust pipe; 402. Combustion chamber; 403. Burner head; 404. Heat storage body. DETAILED DESCRIPTION

[0042] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0043] Example 1

[0044] Reference Figures 1-8 An ultra-low concentration gas regenerative direct combustion incineration device includes a first gas storage tank 100, an adsorption assembly 200, a second gas storage tank 300 and a burner 400. When in use, ultra-low concentration gas is sent into the first gas storage tank 100, and then into the adsorption assembly 200, where the gas components are adsorbed by activated carbon adsorption, while the remaining air is directly discharged. After that, the activated carbon is heated, the gas components are released and stored in the second gas storage tank 300, and then introduced into the combustion chamber. The gas is burned in the burner 400, and the heat generated by the combustion is transferred to the activated carbon. This method can realize the combustion of ultra-low concentration gas. It should be noted that, at the beginning, a combustion-supporting medium is required for combustion to heat the activated carbon. When the amount of gas in the second gas tank 300 reaches a preset value, the gas in the second gas tank 300 is introduced into the burner 400, and the injection of the combustion-supporting medium is stopped. At this time, since the gas concentration in the second gas tank 300 is significantly improved, it can burn normally.

[0045] Reference Figure 4-Figure 6The adsorption component 200 includes a frame, on which an upper cover plate 205 and a lower cover plate 206 with vertically arranged axis lines are provided. A vertically arranged rotating body 202 is rotatably installed between the two, and a rotating shaft formed at the rotating installation position is dynamically connected to a motor 207. The motor 207 is provided on the frame or the upper cover plate 205, and the rotating body 202 can be driven to rotate by the motor 207.

[0046] The end surface of the rotating body 202 is penetrated by a mounting hole 203 . There are at least three mounting holes 203 arranged in an array along the circumference of the rotating body 202 . In the first embodiment, there are four mounting holes 203 . Activated carbon 204 is arranged in each mounting hole 203 .

[0047] The end surface of the upper cover 205 is provided with a gas inlet 208, an air outlet 209 and a gas outlet 210, and initially, the three are connected to the three mounting holes 203 respectively. When the motor 207 drives the rotating body 202 to rotate, the mounting hole 203 connected to the gas inlet 208 can be connected to the air outlet 209 and the gas outlet 210 in sequence.

[0048] A heat exchange port 211 is provided on the end surface of the lower cover plate 206 , and the heat exchange port 211 is coaxial with the gas outlet 210 .

[0049] The exhaust pipe 201 is connected to the end of the air outlet 209 .

[0050] Reference Figure 2 A first air pump 103 and a booster pump 105 are provided on the frame.

[0051] The air inlet end of the first air pump 103 is connected to the air inlet pipe 102, and the air outlet end is connected to the air inlet of the first gas storage tank 100. The end of the air inlet pipe 102 is used to receive ultra-low concentration gas, and the ultra-low concentration gas can be pumped into the first gas storage tank 100 through the first air pump 103.

[0052] The air inlet of the booster pump 105 is connected to the air outlet of the first gas storage tank 100 via an air outlet pipe 104 , and the air outlet of the booster pump 105 is connected to the gas inlet 208 via an air delivery pipe 106 .

[0053] A refrigeration pipe 101 is provided in the first gas storage tank 100, which is used to refrigerate and cool the gas in the first gas storage tank 100. On the one hand, it removes water from the gas, and on the other hand, it keeps the gas in a low-temperature state. The refrigeration technology of the refrigeration pipe 101 can be achieved by using existing refrigeration technology and will not be elaborated on.

[0054] Reference Figure 3 , a second air pump 302 is provided on the frame.

[0055] The air inlet of the second air pump 302 is connected to the gas outlet 210 via an input pipe 301 , and the air outlet of the second air pump 302 is connected to the air inlet of the second gas storage tank 300 via an output pipe 303 . A connecting pipe 304 is provided at the air outlet of the second gas storage tank 300 .

[0056] Reference Figure 4 and Figure 6 The burner 400 includes a combustion chamber 402 located below the heat exchange port 211, a combustion stove 403 is provided in the combustion chamber 402, the upper end of the combustion chamber 402 is open and is provided with a heat storage body 404, the lower end of the heat storage body 404 can block the upper end of the combustion chamber 402, the upper end of the heat storage body 404 extends into the heat exchange port 211 and is provided with fins, the outer surface of the combustion chamber 402 is also connected to the exhaust pipe 401 and the connection is close to the upper end of the combustion chamber 402, preferably, the end of the exhaust pipe 201 is connected to the exhaust pipe 401, the significance of which is that the air discharged through the exhaust pipe 201 is in a low temperature state, and the flue gas in the exhaust pipe 401 is cooled by the low temperature air and then discharged.

[0057] The combustion stove 403 includes an oxygen inlet, a combustion-supporting inlet and a gas receiving port, wherein the oxygen inlet is used for the entry of air or oxygen, and the combustion-supporting inlet is used for the entry of a combustion-supporting medium, such as natural gas, and the gas receiving port is connected to the connecting pipe 304; at the beginning, the combustion stove 403 burns through the combustion-supporting medium. After a preset time, when a preset amount of gas is stored in the second gas storage tank 300, the gas receiving port is opened and the combustion-supporting inlet is closed, and the combustion stove 403 burns through the gas. This method of the combustion stove 403 can be implemented by existing technology and will not be elaborated on.

[0058] Working principle of embodiment 1:

[0059] The first air pump 103 is started, drawing the ultra-low concentration gas into the first gas storage tank 100. The gas is cooled in the first gas storage tank 100, thereby being dehydrated and kept at a low temperature.

[0060] The booster pump 105 is started, and gas is injected into the mounting hole 203 through the air supply pipe 106 and the gas inlet 208. Under the low temperature and high pressure state, the activated carbon 204 can quickly absorb the gas components. After a preset time, the motor 207 drives the rotating body 202 to rotate, and the rotation angle is equal to the central angle between two adjacent mounting holes 203. At this time, the next mounting hole 203 is located at the gas inlet 208 to receive the gas, and the mounting hole 203 where the activated carbon 204 that has absorbed the gas components is located is located at the air outlet 209. The air passes through the air outlet 209 and the exhaust After the gas is discharged through the gas pipe 201 and a preset time has passed, the motor 207 drives the rotating body 202 to rotate again. The mounting hole 203 where the activated carbon 204, which has absorbed the gas components and discharged the air, is located is located at the gas outlet 210. At this time, the heat from the burner 400 is transferred to the activated carbon 204 through the heat storage body 404. The second air pump 302 is started and sucks the gas in the mounting hole 203 through the gas outlet 210 and the inlet pipe 301. Under the conditions of high temperature and negative pressure, the gas adsorbed by the activated carbon 204 can be quickly released and eventually sent to the second gas storage tank 300 for storage.

[0061] When a preset amount of gas is stored in the second gas storage tank 300, the burner 400 uses the gas as fuel for combustion.

[0062] From the above description, it can be seen that this solution can enrich ultra-low concentration gas and then burn the gas. Therefore, compared with the existing patent literature technology mentioned in the background technology, it can realize the combustion of ultra-low concentration gas, and except for the initial combustion, this solution does not require a combustion-supporting medium, and the combustion cost is lower.

[0063] Example 2

[0064] It can be seen from the first embodiment that this solution can realize the combustion of ultra-low concentration gas. In this process, on the one hand, even in a low-temperature and high-pressure environment, it takes a certain amount of time for the activated carbon 204 to adsorb gas components. On the other hand, when the mounting hole 203 where the activated carbon 204 is located discharges air to the outside through the air outlet 209, it is easily affected by the heat of the burner 400 next to it, which can easily cause the adsorbed gas components to be released and leaked. On the other hand, after the activated carbon 204 at the gas outlet 210 releases the gas components, it is in a high-temperature state. When it receives the low-temperature gas next, since the gas is continuously injected, the gas is in a high-temperature state. Therefore, the activated carbon 204 is easily wrapped by low-temperature gas. In this case, the surface of the activated carbon 204 is easily cooled and adsorbs a large amount of gas components to reach adsorption saturation, but the interior is still in a warm state and needs to be gradually cooled over time. However, the saturated gas adsorption on the surface will hinder the gas from moving into the interior of the activated carbon 204. Therefore, the adsorption efficiency of the activated carbon 204 is reduced. Then, either it takes a longer time to make the activated carbon 204 adsorbed to saturation, which is low in efficiency, or the amount of gas adsorbed by the activated carbon 204 at one time does not reach the maximum, which also has the problem of low efficiency.

[0065] In order to solve the above-mentioned problem, this solution proposes embodiment 2.

[0066] Reference Figure 7 and Figure 8 There are six mounting holes 203 arranged in an array along the circumferential direction of the rotating body 202. Initially, the positions of the six mounting holes 203 are named A, B, C, D, E and F in sequence, and an auxiliary port 212 is provided on the upper cover plate 205.

[0067] The gas inlet 208 is connected to the mounting hole 203 at the A position, the air outlet 209 is connected to the mounting hole 203 at the C position, the gas outlet 210 is connected to the mounting hole 203 at the E position, and the auxiliary port 212 is connected to the mounting hole 203 at the F position.

[0068] The auxiliary port 212 is connected to the air supply pipe 106 via an auxiliary pipe 213 , and a solenoid valve is provided on the auxiliary pipe 213 .

[0069] Working principle of embodiment 2:

[0070] The working process of the second embodiment is similar to that of the first embodiment, except that:

[0071] 1. Because there is a position B between the gas inlet 208 and the air outlet 209, after the activated carbon 204 at position A receives a preset amount of ultra-low concentration gas at the gas inlet 208, it needs to pass through position B before reaching position C. Therefore, during this process, the activated carbon 204 has sufficient time to complete the adsorption of gas components and does not need to wait at position A for adsorption to be completed, thereby improving efficiency.

[0072] Furthermore, there is only one B position in the second embodiment, but more positions may be provided to increase the adsorption time of the activated carbon 204;

[0073] It should be noted that since the activated carbon 204 at position E is heated to release gas components, the speed is relatively fast, and the above improvements do not affect the release of gas components by the activated carbon 204;

[0074] 2. Position D exists between positions C and E. The space where the activated carbon 204 is located at position D is at a low temperature, so it can absorb heat. On the one hand, it acts as a heat insulator, preventing heat from being transferred to position C and causing some gas to be released. On the other hand, it acts as a preheating agent, gradually warming the low temperature at position D, which is conducive to the subsequent rapid release of gas components.

[0075] 3. When the activated carbon 204 reaches position F after releasing the gas, the solenoid valve opens for a short while and then closes. The advantage is that a small amount of low-temperature, super-concentrated gas can be injected into the activated carbon 204 at position F. The small amount of gas will cool the activated carbon 204, causing the surface and internal temperatures of the activated carbon 204 to drop and remain roughly consistent. In addition, the small amount of gas will not cause the surface to be saturated with adsorption. Therefore, when the activated carbon 204 reaches position A, compared with the first embodiment, the method of first adding a small amount and then adding a large amount in the second embodiment can ensure that the activated carbon 204 is cooled first, and the surface and internal temperatures are kept as consistent as possible, thereby enabling the surface and internal layers to reach adsorption saturation in a short time. That is, the time it takes for the activated carbon 204 to reach its maximum carrying capacity is shortened, which is beneficial to improving efficiency.

[0076] 4. The method of first adding a small amount and then adding a large amount in the above-mentioned embodiment 2 can make the activated carbon 204 reach adsorption saturation in a short time. Before that, the heating and negative pressure method at position E can prompt the activated carbon 204 to release all the adsorbed gas components in a short time. The two cooperate with each other to form an integrated solution, which can further improve efficiency.

[0077] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An ultra-low concentration gas regenerative direct combustion incineration device, characterized in that: It comprises a first gas storage tank (100), an adsorption assembly (200), a second gas storage tank (300) and a burner (400); The adsorption assembly (200) includes a frame, an upper cover plate (205) and a lower cover plate (206) with their axis lines arranged vertically are provided on the frame, a rotating body (202) arranged vertically is rotatably installed between the upper cover plate (205) and the lower cover plate (206), and a rotating shaft formed at the rotating installation position is connected to a motor (207) provided on the frame to form a power connection; The end surface of the rotating body (202) is provided with a mounting hole (203) extending through it, and at least three mounting holes (203) are arranged in an array along the circumferential direction of the rotating body (202), and activated carbon (204) is provided in each mounting hole (203); The end surface of the upper cover plate (205) is provided with a gas inlet (208), an air outlet (209), and a gas outlet (210) respectively connected to the three mounting holes (203). When the motor (207) drives the rotating body (202) to rotate, the mounting hole (203) connected to the gas inlet (208) can be connected to the air outlet (209) and the gas outlet (210) in sequence. A heat exchange port (211) is provided on the end surface of the lower cover plate (206), and the heat exchange port (211) is coaxial with the gas outlet (210).

2. The ultra-low concentration gas regenerative direct combustion incineration device according to claim 1 is characterized in that: A first air pump (103) and a booster pump (105) are provided on the frame. The air inlet end of the first air pump (103) is connected to an air inlet pipe (102), and the air outlet end is connected to the air inlet of the first air storage tank (100). The end of the air inlet pipe (102) is used to receive ultra-low concentration gas. The air inlet end of the booster pump (105) and the air outlet of the first air storage tank (100) are connected via an air outlet pipe (104). The air outlet end of the booster pump (105) and the gas inlet (208) are connected via an air delivery pipe (106).

3. The ultra-low concentration gas regenerative direct combustion incineration device according to claim 2, characterized in that: A refrigeration pipe (101) is provided in the first gas storage tank (100).

4. The ultra-low concentration gas regenerative direct combustion incineration device according to claim 3, characterized in that: A second air pump (302) is provided on the frame. The air inlet of the second air pump (302) is connected to the gas outlet (210) via an input pipe (301). The air outlet of the second air pump (302) is connected to the air inlet of the second gas storage tank (300) via an output pipe (303). A connecting pipe (304) is provided at the air outlet of the second gas storage tank (300).

5. The ultra-low concentration gas regenerative direct combustion incineration device according to claim 4, characterized in that: The burner (400) includes a combustion chamber (402) located below the heat exchange port (211), a combustion stove (403) is provided in the combustion chamber (402), the upper end of the combustion chamber (402) is open and is provided with a heat storage body (404), the lower end of the heat storage body (404) is capable of blocking the upper end of the combustion chamber (402), the upper end of the heat storage body (404) extends into the heat exchange port (211) and is provided with fins, and the outer surface of the combustion chamber (402) is also connected to a smoke exhaust pipe (401), and the connection is close to the upper end of the combustion chamber (402).

6. The ultra-low concentration gas regenerative direct combustion incineration device according to claim 5, characterized in that: The end of the air outlet (209) is connected to an exhaust pipe (201), and the end of the exhaust pipe (201) is connected to a smoke exhaust pipe (401).

7. The ultra-low concentration gas regenerative direct combustion incineration device according to claim 5, characterized in that: The combustion stove head (403) includes an oxygen inlet, a combustion-supporting inlet and a gas receiving port. The oxygen inlet is used for air or oxygen to enter, the combustion-supporting inlet is used for combustion-supporting medium to enter, and the gas receiving port is connected to the connecting pipe (304) and a solenoid valve is provided at the connection.

8. The ultra-low concentration gas regenerative direct combustion incineration device according to claim 1 or 7, characterized in that: Six mounting holes (203) are arranged in an array along the circumferential direction of the rotating body (202). Initially, the positions of the six mounting holes (203) are named as position A, position B, position C, position D, position E and position F in sequence. An auxiliary port (212) is provided on the upper cover plate (205). The gas inlet (208) is communicated with the mounting hole (203) at position A, the air outlet (209) is communicated with the mounting hole (203) at position C, the gas outlet (210) is communicated with the mounting hole (203) at position E, and the auxiliary port (212) is communicated with the mounting hole (203) at position F.

9. The ultra-low concentration gas regenerative direct combustion incineration device according to claim 8, characterized in that: The auxiliary port (212) and the air supply pipe (106) are connected via an auxiliary pipe (213), and a second electromagnetic valve is provided on the auxiliary pipe (213).

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