An ultra-low concentration gas regenerative direct combustion incineration device

Abstract

The present application relates to the field of gas combustion, and discloses a super-low concentration gas gas storage type direct combustion incineration device, which comprises a first gas storage tank, an adsorption assembly, a second gas storage tank and a burner.The adsorption assembly comprises a rack, and an upper cover plate and a lower cover plate are arranged on the rack in a vertical arrangement of shaft center lines.A rotating body in a vertical arrangement is rotatably installed between the upper cover plate and the lower cover plate, and a rotating shaft formed by the rotatable installation is in power connection with a motor.The end surface of the rotating body is provided with mounting holes, and at least three mounting holes are arranged in an array along the circumferential direction of the rotating body.Active carbon is arranged in each mounting hole.The end surface of the upper cover plate is provided with a gas inlet, an air outlet and a gas outlet which are respectively in communication with the three mounting holes.When the motor drives the rotating body to rotate, the mounting holes in communication with the gas inlet can be sequentially in communication with the air outlet and the gas outlet.The end surface of the lower cover plate is provided with a heat exchange port, and the heat exchange port is coaxial with the gas outlet.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of burners, in particular to the field of gas combustion, and more particularly to a super-low-concentration gas regenerative direct combustion incineration device. BACKGROUND

[0002] Low-concentration gas is generated during coal mining, and if it is directly discharged, it will cause air pollution. Therefore, this part of gas is generally burned.

[0003] Based on the search for the combustion of low-concentration gas, some existing technologies have been found, which will be introduced one by one:

[0004] First, the Chinese invention patent application with the application publication number CN115076689A discloses a low-concentration gas combustion device, which mixes low-concentration gas and liquefied petroleum gas, and then burns the mixed gas. This combustion method with additional combustion medium has high cost, and the waste gas generated during combustion contains not only gas but also combustion medium, so the amount of waste gas emitted during combustion is larger and needs to be improved.

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

[0006] Based on the above, the present application proposes a super-low-concentration gas regenerative direct combustion incineration device. SUMMARY

[0007] To solve the problems mentioned in the above background, the present application provides a super-low-concentration gas regenerative direct combustion incineration device.

[0008] To achieve the above technical purpose, the technical solution adopted by the present application is as follows.

[0009] A super-low-concentration gas regenerative direct combustion incineration device, comprising a first gas storage tank, an adsorption assembly, a second gas storage tank, and a burner;

[0010] The adsorption assembly comprises a rack, an upper cover plate and a lower cover plate arranged vertically along the shaft center line are arranged on the rack, a rotating body arranged vertically is rotatably installed between the upper cover plate and the lower cover plate, and the rotating shaft formed by the rotatable installation is in power connection with the motor arranged on the rack;

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

[0012] The end surface 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, and when the motor drives the rotating body to rotate, the mounting hole communicated with the gas inlet can be communicated with the air outlet and the gas outlet in turn;

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

[0014] As a further improvement and optimization of the application, a first air pump and a booster pump are arranged on the rack, the air inlet end of the first air pump is connected with an air inlet pipe, the air outlet end is connected with the air inlet of the first gas tank, and the tail 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 tank are connected through an air outlet pipe, and the air outlet end of the booster pump and the gas inlet are connected through a gas supply pipe.

[0015] As a further improvement and optimization of the application, a refrigeration pipeline is arranged in the first gas tank.

[0016] As a further improvement and optimization of the application, a second air pump is arranged on the rack, the air inlet end of the second air pump is connected with the gas outlet through an input pipe, the air outlet end of the second air pump is connected with the air inlet of the second gas tank through an output pipe, and a connecting pipe is arranged at the air outlet of the second gas tank.

[0017] As a further improvement and optimization of the application, the burner comprises a combustion chamber located below the heat exchange port, a combustion stove is arranged in the combustion chamber, the upper end of the combustion chamber is open and is provided with a heat accumulator, the lower end of the heat accumulator can block the upper end of the combustion chamber, the upper end of the heat accumulator extends into the heat exchange port and is provided with fins, and the outer surface of the combustion chamber is further connected with an exhaust pipe and the connection is close to the upper end of the combustion chamber.

[0018] As a further improvement and optimization of the application, the tail end of the air outlet is connected with an exhaust pipe, and the tail end of the exhaust pipe is connected with the exhaust pipe.

[0019] As a further improvement and optimization of the application, the combustion stove comprises 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 with the connecting pipe and is provided with a solenoid valve I at the connection.

[0020] As a further improvement and optimization of the present application, the six mounting holes are arranged along the circumferential direction of the rotating body, and the positions of the six mounting holes are sequentially named as A position, B position, C position, D position, E position and F position at the beginning; and the auxiliary port is arranged on the upper cover plate;

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

[0022] As a further improvement and optimization of the present application, the auxiliary port and the air supply pipe are connected through an auxiliary pipe, and the auxiliary pipe is provided with a second electromagnetic valve.

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

[0024] The present application can realize the combustion of ultra-low concentration gas, and on this basis:

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

[0026] Further, the B position can be provided with more positions to improve the adsorption time of the activated carbon.

[0027] 2. There is a D position between the C position and the E position, and the space where the activated carbon at the D position is in a low temperature state, so it can absorb heat. On the one hand, it plays a heat insulation role to prevent heat conduction to the C position and cause partial gas leakage, and on the other hand, it plays a preheating role to gradually warm up the low temperature state at the D position, which is beneficial to the subsequent rapid release of gas components.

[0028] 3. The activated carbon at the E position is subjected to heating and negative pressure, so it can promote 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 briefly and then closes. The advantage is that a small amount of low-temperature, high-concentration gas can be injected into the activated carbon at position F. This small amount of gas will cool the activated carbon, causing both the surface and internal temperatures to drop and become roughly the same. Furthermore, the small amount of gas will not cause surface adsorption saturation. Therefore, when the activated carbon reaches position A, the surface and internal temperatures can be kept as consistent as possible, allowing both the surface and internal surfaces to reach adsorption saturation in a short time. This shortens the time it takes for the activated carbon to reach its maximum carrying capacity, thus improving efficiency.

[0030] It is important to note that if there is no position F, then after the activated carbon releases the gas components, it immediately reaches position A and receives a large amount of ultra-low concentration gas at once. In this case, the activated carbon is in a high-temperature state and is surrounded by low-temperature gas. Under these circumstances, the surface of the activated carbon is easily cooled down and adsorbs a large amount of gas components, reaching adsorption saturation. However, the interior is still in a warm state and needs to gradually cool down over time. However, the gas saturated 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, starting with a small amount and then increasing the amount, can make the activated carbon reach adsorption saturation in a short time. Before that, the heating and negative pressure at position E can make the activated carbon release all the adsorbed gas components in a short time. The two work together to form an integrated solution, which can further improve efficiency. Attached Figure Description

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

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

[0034] Figure 3 This is a schematic diagram showing the connection between the second air storage tank and the second air pump.

[0035] Figure 4 This is a schematic diagram of the adsorption component and burner in Example 1;

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

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

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

[0039] Figure 8 The exploded view of Example 2.

[0040] Reference signs in the drawings are:

[0041] 100, first gas tank; 101, refrigeration pipeline; 102, gas inlet pipeline; 103, first gas pump; 104, gas outlet pipeline; 105, booster pump; 106, gas delivery pipeline; 200, adsorption assembly; 201, exhaust pipeline; 202, rotating body; 203, mounting hole; 204, activated carbon; 205, upper cover plate; 206, lower cover plate; 207, motor; 208, gas inlet; 209, air outlet; 210, gas outlet; 211, heat exchange opening; 212, auxiliary opening; 213, auxiliary pipeline; 300, second gas tank; 301, input pipeline; 302, second gas pump; 303, output pipeline; 304, connecting pipeline; 400, burner; 401, smoke exhaust pipeline; 402, combustion chamber; 403, combustion zone; 404, heat accumulator. DETAILED DESCRIPTION

[0042] In order to further clarify the technical means adopted by the present application and the effects achieved by the technical means, the specific embodiments, structures, features and effects of the present application are described in detail below with reference to the drawings and preferred embodiments.

[0043] Example 1

[0044] Reference Figures 1-8 A super-low-concentration gas storage direct combustion incineration device, comprising a first gas tank 100, an adsorption assembly 200, a second gas tank 300 and a burner 400. In use, super-low-concentration gas is sent into the first gas tank 100, and then into the adsorption assembly 200. The activated carbon adsorption method is used to adsorb the gas components, and the remaining air is directly discharged. Then, the activated carbon is heated, the gas components are released, and stored in the second gas tank 300, and then introduced into the burner 400 for combustion. The heat generated by combustion is conducted to the activated carbon. This method can realize the combustion of super-low-concentration gas. It should be noted that at the beginning, combustion-supporting medium is needed for combustion, and the activated carbon is heated. When the amount of gas in the second gas tank 300 reaches the preset value, the gas in the second gas tank 300 is introduced into the burner 400, and the injection of combustion-supporting medium is stopped. At this time, since the concentration of gas in the second gas tank 300 is significantly improved, normal combustion can be realized.

[0045] Reference Figures 4-6The adsorption assembly 200 includes a frame, on which an upper cover plate 205 and a lower cover plate 206 are arranged vertically along their axis. A vertically arranged rotating body 202 is rotatably mounted between the two, and the rotating shaft formed at the rotatable mounting point is connected to a motor 207. The motor 207 is mounted 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 face of the rotating body 202 is provided with a mounting hole 203. At least three mounting holes 203 are arranged in an array along the circumference of the rotating body 202. In the first embodiment, four are shown. Activated carbon 204 is provided in each mounting hole 203.

[0047] The end face of the upper cover plate 205 is provided with a gas inlet 208, an air outlet 209 and a gas outlet 210. Initially, the three are connected to 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] The end face of the lower cover plate 206 is provided with a heat exchange port 211, which is coaxial with the gas outlet 210.

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

[0050] Reference Figure 2 The frame is equipped with a first air pump 103 and a booster pump 105.

[0051] The first air pump 103 has an air inlet pipe 102 connected to its air inlet end and an air outlet 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. 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 through an air outlet pipe 104, and the air outlet of the booster pump 105 is connected to the gas inlet 208 through an air delivery pipe 106.

[0053] The first gas storage tank 100 is equipped with a refrigeration pipe 101, which is used to cool down 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 at a low temperature. The refrigeration technology of the refrigeration pipe 101 can be achieved using existing refrigeration technology, and will not be described in detail.

[0054] Reference Figure 3 A second air pump 302 is installed on the frame.

[0055] The air inlet end of the second air pump 302 is connected with the gas outlet 210 through the input pipe 301, the air outlet end of the second air pump 302 is connected with the air inlet of the second gas storage tank 300 through the output pipe 303, and the air outlet of the second gas storage tank 300 is provided with the connecting pipe 304.

[0056] With reference to Figure 4 With Figure 6 The burner 400 comprises a combustion chamber 402 located below the heat exchange opening 211, the combustion chamber 402 is provided with a combustion stove 403, the upper end of the combustion chamber 402 is open and provided with a heat accumulator 404, the lower end of the heat accumulator 404 can block the upper end of the combustion chamber 402, the upper end of the heat accumulator 404 extends into the heat exchange opening 211 and is provided with fins, the outer surface of the combustion chamber 402 is further connected with the smoke exhaust pipe 401 and the connection is close to the upper end of the combustion chamber 402, preferably, the tail end of the exhaust pipe 201 is connected with the smoke exhaust pipe 401, which means that the air discharged through the exhaust pipe 201 is in a low-temperature state, and the flue gas in the smoke exhaust pipe 401 is cooled by the low-temperature air, and then the flue gas is discharged.

[0057] The combustion stove 403 comprises an oxygen inlet, a combustion-supporting inlet and a gas receiving opening, wherein the oxygen inlet is used for air or oxygen to enter, the combustion-supporting inlet is used for combustion-supporting medium, such as natural gas, to enter, and the gas receiving opening is connected with the connecting pipe 304; at the beginning, the combustion stove 403 is combusted by the combustion-supporting medium, after a preset time, the second gas storage tank 300 stores a preset amount of gas, the gas receiving opening is opened and the combustion-supporting inlet is closed, and the combustion stove 403 is combusted by the gas, which is a mode that can be realized by the prior art and will not be described in detail.

[0058] The working principle of the first embodiment is as follows:

[0059] The first air pump 103 is started to continuously draw the ultra-low-concentration gas into the first gas storage tank 100, and the gas in the first gas storage tank 100 is subjected to refrigeration treatment, so that the gas can be subjected to water removal treatment and be in a low-temperature state;

[0060] The booster pump 105 is started to inject gas into the installation hole 203 through the gas inlet 208 and the gas pipe 106. In the low-temperature and high-pressure state, the activated carbon 204 can quickly adsorb the gas components. After the preset time, the rotating body 202 is rotated by the motor 207, and the rotation angle is equal to the central angle between two adjacent installation holes 203. At this time, the next installation hole 203 is located at the gas inlet 208 to receive the gas, and the installation hole 203 in which the activated carbon 204 adsorbed the gas components is located at the air outlet 209. The air is discharged through the air outlet 209 and the exhaust pipe 201. After the preset time, the rotating body 202 is rotated again by the motor 207. The installation hole 203 in which the activated carbon 204 adsorbed the gas components and the air is discharged is located at the gas outlet 210. At this time, the heat generated by the burner 400 is conducted to the activated carbon 204 through the heat accumulator 404. The second gas pump 302 is started to suck the gas in the installation hole 203 through the gas outlet 210 and the input pipe 301. Under the condition of high temperature and negative pressure, the gas adsorbed by the activated carbon 204 can be quickly released and finally stored in the second gas tank 300.

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

[0062] As described above, the scheme can realize the enrichment of ultra-low concentration gas and then gas combustion. Therefore, compared with the existing patent literature technology in the background art, the scheme can realize the combustion of ultra-low concentration gas, and in addition to the initial combustion, the scheme does not require combustion-supporting medium, and the combustion cost is lower.

[0063] Example two

[0064] As shown in Example 1, this solution can achieve combustion of ultra-low concentration methane gas. During this process, on the one hand, even in a low-temperature, high-pressure environment, activated carbon 204 requires a certain amount of time to adsorb methane components. On the other hand, when air is discharged from the mounting hole 203 where activated carbon 204 is located through the air outlet 209, it is easily affected by the heat of the adjacent burner 400, which can easily lead to the release and leakage of adsorbed methane components. Furthermore, after the activated carbon 204 at the methane outlet 210 has released all the methane components, it is in a high-temperature state. When receiving low-temperature methane gas subsequently, since the methane gas is continuously injected... Therefore, activated carbon 204 is prone to being enveloped by low-temperature gas. In this case, the surface of activated carbon 204 is easily cooled down and adsorbs a large amount of gas components, reaching adsorption saturation. However, the interior is still warm and needs to be gradually cooled over time. But the gas saturated on the surface will hinder the gas from moving into the interior of activated carbon 204. Therefore, the adsorption efficiency of activated carbon 204 is reduced. So, either it takes longer for activated carbon 204 to become saturated, resulting in low efficiency, or the amount of gas that activated carbon 204 can adsorb at one time does not reach its maximum, also resulting in low efficiency.

[0065] To address the aforementioned problems, this solution proposes Embodiment Two.

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

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

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

[0069] Working principle of Example 2:

[0070] The working process of Example 2 is similar to that of Example 1, except that:

[0071] 1. Since 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 enough time to complete the adsorption of the gas components and does not need to wait for the adsorption to be completed at position A, thus improving efficiency.

[0072] Furthermore, in this second embodiment, there is only one position B, but multiple positions can be set to increase the adsorption time of activated carbon 204.

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

[0074] 2. There is a position D between position C and position E. The space where the activated carbon 204 is located at position D is in a low temperature state, so it can absorb heat. On the one hand, it plays a role in heat insulation to prevent heat from being conducted to position C and causing some gas to be released and leaked. On the other hand, it plays a role in preheating, so that the low temperature state at position D gradually rises, which is conducive to the rapid release of gas components in the future.

[0075] 3. When the activated carbon 204 reaches position F after releasing the gas, the solenoid valve is opened for a short while and then closed. The advantage is that a small amount of low-temperature, high-concentration gas can be injected into the activated carbon 204 at position F. The small amount of gas will cool down the activated carbon 204, causing both the surface and internal temperatures of the activated carbon 204 to drop and remain roughly the same. Furthermore, the small amount of gas will not cause surface adsorption saturation. Therefore, when the activated carbon 204 reaches position A, compared to Example 1, the method of first releasing a small amount and then releasing a large amount in Example 2 can ensure that the activated carbon 204 cools down first, and the surface and internal temperatures remain as consistent as possible. This allows the surface and internal temperatures to reach adsorption saturation in a short time, thus shortening the time it takes for the activated carbon 204 to reach its maximum carrying capacity, which is beneficial for improving efficiency.

[0076] 4. The method of starting with a small amount and then increasing to a large amount in the above embodiment 2 can make the activated carbon 204 reach adsorption saturation in a short time. Before that, the heating and negative pressure at position E can cause the activated carbon 204 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.

[0077] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solution of the present application. Any modification, change, equivalent change and modification of the above embodiments made according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. An ultra-low concentration gas superheat direct combustion incineration device, characterized in that, The application relates to a gas storage device, which comprises a first gas tank (100), an adsorption assembly (200), a second gas tank (300) and a burner (400). The adsorption assembly (200) comprises a rack, an upper cover plate (205) and a lower cover plate (206) arranged on the rack and vertically arranged, a rotating body (202) rotatably arranged between the upper cover plate (205) and the lower cover plate (206) and rotatably arranged on the rack and forming a rotating shaft connected with a motor (207) arranged on the rack. The end surface of the rotating body (202) is provided with mounting holes (203) arranged in an array along the circumferential direction of the rotating body (202), and at least three mounting holes (203) are arranged in the array; and each mounting hole (203) is provided with activated carbon (204). 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 communicated with the three mounting holes (203); and when the motor (207) drives the rotating body (202) to rotate, the mounting hole (203) communicated with the gas inlet (208) can be communicated with the air outlet (209) and the gas outlet (210) in sequence. The end surface of the lower cover plate (206) is provided with a heat exchange port (211) coaxial with the gas outlet (210).

2. The super-low concentration gas direct-fired incineration device according to claim 1, characterized in that, The rack is provided with a first gas pump (103) and a booster pump (105); the air inlet end of the first gas pump (103) is connected with an air inlet pipe (102), the air outlet end is connected with the air inlet of the first gas tank (100), and the tail end of the air inlet pipe (102) is used for receiving ultra-low concentration gas; the air inlet end of the booster pump (105) is connected with the air outlet of the first gas tank (100) through an air outlet pipe (104); and the air outlet end of the booster pump (105) is connected with the gas inlet (208) through a gas conveying pipe (106).

3. The super-low concentration gas direct-fired incineration device according to claim 2, characterized in that, The first gas tank (100) is provided with a refrigeration pipeline (101).

4. The super-low concentration gas direct-fired incineration device according to claim 3, characterized in that, The rack is provided with a second gas pump (302); the air inlet end of the second gas pump (302) is connected with the gas outlet (210) through an input pipe (301); the air outlet end of the second gas pump (302) is connected with the air inlet of the second gas tank (300) through an output pipe (303); and the air outlet of the second gas tank (300) is provided with a connecting pipe (304).

5. The super-low concentration gas direct-fired incineration device according to claim 4, characterized in that, The burner (400) comprises a combustion chamber (402) located below the heat exchange port (211); the combustion chamber (402) is provided with a combustion stove (403); the upper end of the combustion chamber (402) is open and provided with a heat accumulating body (404); the lower end of the heat accumulating body (404) can block the upper end of the combustion chamber (402); the upper end of the heat accumulating body (404) extends into the heat exchange port (211) and is provided with fins; and the outer surface of the combustion chamber (402) is further connected with a smoke exhaust pipe (401) and the connection position is close to the upper end of the combustion chamber (402).

6. The super-low concentration gas direct-fired incineration device according to claim 5, characterized in that, The tail end of the air outlet (209) is connected with an exhaust pipe (201); and the tail end of the exhaust pipe (201) is connected with the smoke exhaust pipe (401).

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

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

9. The super-low concentration gas direct-fired incineration device according to claim 8, characterized in that, The auxiliary port (212) and the air supply pipe (106) are connected through an auxiliary pipe (213), and the auxiliary pipe (213) is provided with a solenoid valve II.

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