Coal mine gas treatment device

Abstract

This invention belongs to the technical field of coal mine gas control devices, specifically disclosing a coal mine gas treatment device, including a gas diversion device, a gas storage device, a combustion device, and a first valve. The gas diversion device has a first inlet, a first outlet, and a second outlet; clean gas is transported to the gas diversion device through the first inlet. The gas storage device has a second inlet and a third outlet, with the second inlet connected to the first outlet. The combustion device includes a direct combustion chamber and a media regenerative oxidation chamber. The direct combustion chamber is connected to the third outlet and the second outlet, and the media regenerative oxidation chamber is connected to the second outlet. When the concentration of clean gas in the gas diversion device is higher than a preset concentration, the second outlet is connected to the direct combustion chamber; when the concentration of clean gas in the gas diversion device is lower than the preset concentration, the second outlet is connected to the media regenerative oxidation chamber. The first valve connects the third outlet and the direct combustion chamber, improving the convenience and efficiency of the treatment.

Description

Technical Field

[0001] This invention belongs to the technical field of coal mine gas control devices, and specifically relates to a coal mine gas treatment device. Background Technology

[0002] To ensure mine safety, gas drainage is typically used to reduce methane concentration to below 1%, a safe level. However, in my country's coal mine gas drainage process, due to the limited variety of drainage methods, significant air mixing, and fluctuating drainage volumes, the majority of the drained gas is low-concentration (less than 30%), with over 70% of the drained gas having a concentration less than 8%. This portion of gas, being within the explosive concentration range, is difficult to stably and efficiently utilize using conventional combustion methods and is thus released into the atmosphere.

[0003] In related technologies, coal mine gas treatment devices use a combination of direct-fired burners and porous media regenerative burners to treat gas. However, the porous media regenerative burner must be heated to a certain temperature by the direct-fired burner before it can function. If the amount of gas that meets the combustion conditions of the direct burner is insufficient, the porous media regenerative burner cannot be used smoothly. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a coal mine gas treatment device that improves the convenience of oxidizing gas through media regenerative oxidation, thereby enhancing work efficiency.

[0005] The coal mine gas treatment device of this invention includes: a gas diversion device having a first inlet, a first outlet, and a second outlet, wherein clean gas is transported to the gas diversion device through the first inlet, and the gas diversion device is capable of transporting clean gas with a concentration higher than a preset value to the first outlet, and clean gas with a concentration lower than the preset value and clean gas with a concentration higher than the preset value to the second outlet; a gas storage device having a second inlet and a third outlet, wherein the second inlet is connected to the first outlet; and a combustion... The combustion device includes a direct combustion chamber and a regenerative thermal oxidation chamber. The direct combustion chamber is connected to the third gas outlet and the second gas outlet. The regenerative thermal oxidation chamber is connected to the second gas outlet. When the concentration of clean gas in the gas diversion device is higher than the preset concentration, the second gas outlet is connected to the direct combustion chamber. When the concentration of clean gas in the gas diversion device is lower than the preset concentration, the second gas outlet is connected to the regenerative thermal oxidation chamber. A first valve is connected to the third gas outlet and the direct combustion chamber.

[0006] Understandably, when the concentration of clean gas supplied to the gas diversion device is high, a portion of the clean gas is sent to the gas storage device through the first outlet and stored there. The remaining clean gas is sent to the combustion device through the second outlet. When the concentration of clean gas is low, it is directly supplied to the combustion device, where it is burned to generate usable energy. Specifically, the combustion device uses two methods to burn the clean gas: the first is by directly igniting the clean gas in the direct combustion chamber, and the second is by using a regenerative thermal oxidation chamber. When high-concentration clean gas enters the combustion device, it is directly ignited. The energy generated by the combustion is used to heat the regenerative thermal oxidation chamber, allowing lower-concentration clean gas to enter the combustion device and burn through regenerative oxidation. When the temperature of the part of the structure that has completed regenerative oxidation is too low to carry out regenerative oxidation smoothly, and the supply of high-concentration clean gas is insufficient, the first valve can be opened to transport the clean gas stored in the gas storage device to the direct combustion chamber for direct combustion, thereby ensuring that the low-concentration clean gas can be regeneratively oxidized smoothly, which in turn helps to improve work efficiency.

[0007] In this embodiment, the gas diversion device includes: a gas diversion box, wherein the first inlet, the first outlet, and the second outlet are all disposed in the gas diversion box; a gas concentration detector, wherein the gas concentration detector is disposed in the gas diversion box and adjacent to the first inlet; a second valve, wherein the second valve connects the first outlet and the second inlet; and a valve assembly, wherein the valve assembly is disposed on the supply pipeline between the second outlet and the combustion device to control the on / off connection between the second outlet and the direct combustion chamber or the media regenerative oxidation chamber.

[0008] In this embodiment, the supply pipeline includes: a main delivery pipeline, the air inlet of which is connected to the second air outlet, and the third air outlet connected to the main delivery pipeline via an auxiliary pipe; a first branch pipeline and a second branch pipeline, the air inlet of which is connected to the main delivery pipeline, the air outlet of which is connected to the direct combustion chamber, the air inlet of which is connected to the main delivery pipeline, and the air outlet of which is connected to the regenerative oxidation chamber.

[0009] In this embodiment, the valve assembly includes: a third valve disposed on the main delivery pipeline; a fourth valve disposed on the first branch pipeline; and a fifth valve disposed on the second branch pipeline. In this embodiment, the direct combustion chamber is disposed circumferentially outside the regenerative thermal oxidation chamber.

[0010] In this embodiment, the combustion device further includes: an outer shell; a first shell and a heat insulation layer, wherein a first cavity is formed between the circumferential outer wall of the first shell and the inner wall of the outer shell, and the heat insulation layer is filled between the first shell and the outer shell; and a second shell, wherein the second shell is disposed inside the first shell, and a direct combustion chamber is formed between the circumferential outer wall of the second shell and the first shell, and the medium regenerative oxidation chamber is formed inside the second shell.

[0011] In this embodiment, the combustion device further includes: an external flow housing, which is disposed at the air inlet end of the first housing and circumferentially disposed in the first housing; an internal flow housing, which is disposed at the air inlet end of the second housing and circumferentially disposed in the second housing, wherein an annular cavity is formed between the inner wall of the external flow housing and the circumferential outer wall of the internal flow housing; and an end cap, which is disposed at the air inlet ends of the external flow housing and the internal flow housing, wherein a first input hole is provided on the end cap at a position opposite to the annular cavity, and a second input hole is provided on the end cap at a position opposite to the inner cavity of the internal flow housing, wherein the first input hole communicates with the third air outlet and the second air outlet, and the second input hole communicates with the second air outlet.

[0012] In this embodiment, a direct-fire stabilizer is provided at the gas outlet end of the annular cavity.

[0013] In this embodiment, both the external and internal manifold housings are equipped with gas distributors at their outlet ends to ensure uniform distribution of clean gas entering the direct combustion chamber or the media regenerative oxidation chamber.

[0014] In this embodiment, the gas distributor includes: a partition; a gas guide pipe that passes through the partition; and a baffle that is disposed in the middle of the gas outlet end of the gas guide pipe by a support member, and an exhaust channel is formed between the baffle and the gas guide pipe. Attached Figure Description

[0015] Figure 1 This is a flowchart of a coal mine gas treatment device according to an embodiment of the present invention;

[0016] Figure 2 This is an end view of the combustion device according to an embodiment of the present invention;

[0017] Figure 3 This is a cross-sectional view of the combustion device according to an embodiment of the present invention;

[0018] Figure 4 This is a cross-sectional view of the gas distributor according to an embodiment of the present invention.

[0019] Figure label:

[0020] 1. Clean gas delivery pipe; 2. Gas distribution box; 3. Gas concentration detector; 4. Gas flow detector; 5. Supply pipeline; 6. Combustion device; 7. Diversion pipe; 8. Gas storage device; 9. Auxiliary pipe; 10. Outer shell; 11. Insulation layer; 12. First shell; 13. Direct combustion chamber; 14. Second shell; 15. Medium regenerative oxidation chamber; 16. Gas input pipe; 17. Main delivery pipeline; 18. Direct combustion stabilizer; 19. External flow shell; 20. Annular cavity; 21. End cap; 22. First input port; 23. Gas distributor; 24. Second input port; 25. Inner flow shell; 26. Third input port; 27. Baffle; 28. Gas guide pipe; 29. ​​Central column; 30. Connecting plate; 31. Support component; 32. Baffle; 33. Umbrella cover; 34. Exhaust channel. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] like Figure 1 and Figure 2 As shown, the coal mine gas treatment device in this embodiment includes a gas diversion device, a gas storage device 8, a combustion device 6, and a first valve. The gas diversion device has a first inlet, a first outlet, and a second outlet. Clean gas is delivered to the gas diversion device through the first inlet. The gas diversion device can deliver clean gas with a concentration higher than a preset value to the first outlet, and clean gas with a concentration lower than a preset value and clean gas with a concentration higher than a preset value to the second outlet. The gas storage device 8 has a second inlet and a third outlet, and the second inlet is connected to the first outlet. The combustion device 6 includes a direct combustion chamber 13 and a medium regenerative oxidation chamber 15. The direct combustion chamber 13 is connected to the third outlet and the second outlet, and the medium regenerative oxidation chamber 15 is connected to the second outlet. When the concentration of clean gas in the gas diversion device is higher than the preset concentration, the second outlet is connected to the direct combustion chamber 13. When the concentration of clean gas in the gas diversion device is lower than the preset concentration, the second outlet is connected to the medium regenerative oxidation chamber 15. The first valve is connected to the third outlet and the direct combustion chamber 13.

[0023] Specifically, a cleaning device is used to deliver clean gas to a gas distribution device through a clean gas delivery pipe. The cleaning device is used to clean low-concentration gas to obtain clean gas. The cleaning device uses methods such as filtration and desulfurization to clean low-concentration gas. This is a conventional existing technology, and its specific composition and working principle will not be described in detail here.

[0024] In this embodiment, the heat generated by the combustion device 6 can be transferred and converted into usable energy using a heat utilization device. The heat utilization device can utilize the usable energy output by the combustion of clean gas by the combustion device 6 by heating water. The heat utilization device is a conventional technology in the art and will not be described in detail here.

[0025] The preset concentration of clean gas can be set according to the lowest concentration of clean gas that can be burned by the regenerative oxidation method; the specific value is not limited here.

[0026] Understandably, when the concentration of clean gas supplied to the gas diversion device is high, a portion of the clean gas is transported through the first outlet to the gas storage device 8 for storage, while the remaining clean gas is supplied through the second outlet to the combustion device 6. When the concentration of clean gas is low, it is directly supplied to the combustion device 6, where it is burned to generate usable energy. Specifically, the combustion device 6 uses two methods to burn the clean gas: the first is by directly igniting the clean gas through the direct combustion chamber 13, and the second is by using the regenerative thermal oxidation chamber 15. When high-concentration clean gas enters the combustion device 6, it is directly ignited, and the energy generated is used to heat the regenerative thermal oxidation chamber 15, allowing lower-concentration clean gas to enter the combustion device 6 and burn through regenerative oxidation. When the temperature of the part of the structure that has completed the regenerative oxidation is too low to carry out the regenerative oxidation smoothly, and the supply of high-concentration clean gas is insufficient, the first valve can be opened to transport the clean gas stored in the gas storage device 8 to the direct combustion chamber 13 for direct combustion, thereby ensuring that the low-concentration clean gas can be regeneratively oxidized smoothly, which in turn helps to improve work efficiency.

[0027] In this embodiment, as Figure 1 As shown, the gas storage device 8 includes multiple gas storage tanks. The inlets of the multiple gas storage tanks can be connected to the first gas outlet through the diversion pipe 7, and the third gas outlet of each gas storage tank is connected to the direct combustion chamber 13. By setting multiple gas storage tanks, the gas storage capacity of the gas storage device 8 can be improved.

[0028] In this embodiment, as Figure 1 and Figure 2 As shown, the gas diversion device includes a gas diversion box 2, a gas concentration detector 3, a second valve, and a valve assembly (not shown in the figure). The first inlet, the first outlet, and the second outlet are all located in the gas diversion box 2. The gas concentration detector 3 is located in the gas diversion box 2 and adjacent to the first inlet. The second valve connects the first outlet and the second inlet. The valve assembly is located on the supply pipeline 5 between the second outlet and the combustion device 6 to control the connection and disconnection between the second outlet and the direct combustion chamber 13 or the medium regenerative oxidation chamber 15.

[0029] The gas concentration detector 3 is a conventional existing technology, and its specific structure and working principle will not be described in detail here.

[0030] By setting up a gas distribution box 2, a portion of clean gas can be stored. The concentration of clean gas entering the gas distribution box 2 is detected by a gas concentration detector 3. If the detected concentration is higher than the preset concentration, the clean gas in the gas distribution box 2 is controlled to enter the gas storage device 8 through the first gas outlet, or the second gas outlet is controlled to connect with the direct combustion chamber 13 through the valve assembly, so that the clean gas is delivered to the direct combustion chamber 13 for combustion. After combustion in the direct combustion chamber 13, the medium regenerative oxidation chamber 15 can be heated, so that clean gas with a concentration lower than the preset concentration can directly enter the medium regenerative oxidation chamber 15 through the second gas outlet for regenerative oxidation combustion.

[0031] In this embodiment, as Figure 1 and Figure 2 As shown, the supply pipeline 5 includes a main delivery pipeline 17, a first branch pipeline, and a second branch pipeline (not shown in the figure). The air inlet of the main delivery pipeline 17 is connected to the second air outlet, and the third air outlet is connected to the main delivery pipeline 17 through an auxiliary pipe 9. The air inlet of the first branch pipeline is connected to the main delivery pipeline 17, and the air outlet of the first branch pipeline is connected to the direct combustion chamber 13. The air inlet of the second branch pipeline is connected to the main delivery pipeline 17, and the air outlet of the second branch pipeline is connected to the medium regenerative oxidation chamber 15.

[0032] Understandably, the gas output from the gas diversion device through the second outlet enters the main delivery pipeline 17. If the concentration of the clean gas is higher than the preset concentration, it is then transported to the direct combustion chamber 13 for combustion through the first branch pipeline. If the concentration of the clean gas is lower than the preset concentration, it is then transported to the media regenerative oxidation chamber 15 for combustion through the second branch pipeline. When the gas concentration output from the second outlet is insufficient for regenerative combustion using media regenerative oxidation, the third outlet is connected to the main delivery pipeline 17, and the clean gas stored in the gas storage device 8 is transported to the direct combustion chamber 13 through the first branch pipeline.

[0033] In this embodiment, the valve assembly includes a third valve, a fourth valve, and a fifth valve. The third valve is located on the main delivery pipeline 17; the fourth valve is located on the first branch pipeline; and the fifth valve is located on the second branch pipeline.

[0034] For example, the third, fourth, and fifth valves can all be solenoid valves. The specific types of the third, fourth, and fifth valves can be selected according to actual needs and are not restricted here.

[0035] Specifically, the third valve is located upstream of the outlet of the auxiliary pipe 9, so that when clean gas is delivered to the main delivery pipe 17 through the auxiliary pipe 9, the second outlet is disconnected to prevent clean gas from being delivered to the combustion device 6.

[0036] Understandably, the valve assembly includes a third valve, a fourth valve, and a fifth valve. By installing the third valve on the main delivery pipeline 17, the gas diversion device and the combustion device 6 can be connected or disconnected. By installing the fourth valve on the first branch pipeline, the flow of clean gas to the direct combustion chamber 13 can be controlled. By installing the fifth valve on the second branch pipeline, the flow of clean gas to the media regenerative oxidation chamber 15 can be controlled. Thus, the flow direction of clean gas can be controlled according to actual needs.

[0037] A gas flow detector 4 is installed at the second gas outlet to detect the volume of clean gas delivered to the combustion device 6 through the second gas outlet in real time. Combined with the total volume of clean gas delivered to the gas distribution box 2, the actual volume of clean gas delivered to the gas storage device 8 can be obtained. The structure and working principle of the gas flow detector 4 are conventional existing technology in this field and will not be described in detail here.

[0038] In this embodiment, as Figure 2 and Figure 3 As shown, the direct combustion chamber 13 is located circumferentially outside the regenerative oxidation chamber 15.

[0039] It is understandable that the direct combustion chamber 13 is located circumferentially outside the regenerative thermal oxidation chamber 15, and the regenerative thermal oxidation chamber 15 can be uniformly heated through the direct combustion chamber 13, which is beneficial to improving the uniformity of clean gas combustion in the regenerative thermal oxidation chamber 15.

[0040] In this embodiment, as Figure 2 and Figure 3 As shown, the combustion device 6 also includes an outer shell 10, a first shell 12, a heat insulation layer 11, and a second shell 14. A first cavity is formed between the circumferential outer wall of the first shell 12 and the inner wall of the outer shell 10. The heat insulation layer 11 fills the space between the first shell 12 and the outer shell 10. The second shell 14 is disposed inside the first shell 12, and a direct combustion chamber 13 is formed between the circumferential outer wall of the second shell 14 and the first shell 12. A medium regenerative oxidation chamber 15 is formed inside the second shell 14.

[0041] Specifically, a first housing 12 and a second housing 14 constitute a combustion group. Multiple combustion groups can be arranged inside the housing 10 to improve the combustion efficiency of clean gas. For example, multiple combustion groups can be evenly spaced along the circumference inside the housing 10. Furthermore, multiple main delivery pipelines 17 are provided. Multiple main delivery pipelines 17 are connected to the second gas outlet through the gas input pipeline 16. Each main delivery pipeline 17 is connected to a first branch pipeline and a second branch pipeline. A third valve is provided on the gas input pipeline 16. An auxiliary pipeline 9 is connected to the gas input pipeline 16 and is located downstream of the third valve.

[0042] For example, the outer shell 10, the first shell 12, and the second shell 14 are all cylindrical, which helps to make the temperature distribution in the direct combustion chamber 13 and the medium regenerative oxidation chamber 15 more uniform. Of course, other shapes are also possible, and there are no restrictions here.

[0043] It is understood that in this embodiment, a heat insulation layer 11 is filled between the outer shell 10 and the first shell 12 to prevent the temperature of the outer shell 10 from becoming too high, thereby improving safety and preventing the usable energy generated by combustion from escaping outward through the outer shell 10. The second shell 14 is disposed inside the first shell 12, and a direct combustion chamber 13 is formed between the outer circumferential wall of the second shell 14 and the first shell 12, which is beneficial for the direct combustion chamber 13 to uniformly heat the medium regenerative oxidation chamber 15.

[0044] In this embodiment, as Figure 2 and Figure 3 As shown, the combustion device 6 also includes an external flow housing 19, an internal flow housing 25, and an end cap 21. The external flow housing 19 is disposed at the air inlet end of the first housing 12 and is disposed circumferentially in the first housing 12. The internal flow housing is disposed at the air inlet end of the second housing 14 and is disposed circumferentially in the second housing 14. An annular cavity 20 is formed between the inner wall of the external flow housing 19 and the circumferential outer wall of the internal flow housing 25. The end cap 21 is disposed at the air inlet ends of the external flow housing 19 and the internal flow housing 25. A first input hole 22 is provided on the end cap 21 at a position opposite to the annular cavity 20. A second input hole 24 is provided on the end cap 21 at a position opposite to the inner cavity of the internal flow housing 25. The first input hole 22 is connected to the third air outlet and the second air outlet, and the second input hole 24 is connected to the second air outlet.

[0045] For example, a third input hole 26 is provided on the end cap 21 at a position opposite to the annular cavity 20. The first input hole 22 and the third input hole 26 are evenly spaced along the circumference of the end cap 21, and the first input hole 22 and the third input hole 26 can be connected to the first branch pipe through a pipe respectively. Multiple second input holes 24 can be provided, and multiple second input holes 24 can be connected to the second branch pipe through pipes respectively.

[0046] It is understandable that by setting up the external flow box 19 and the internal flow box, the clean gas can be collected in the annular cavity 20 or the internal flow box, which is conducive to entering the interior of the direct combustion chamber 13 or the medium regenerative oxidation chamber 15 more evenly.

[0047] In this embodiment, as Figure 3 As shown, a direct-fire stabilizer 18 is provided at the outlet end of the annular cavity 20.

[0048] It is understandable that by installing a direct-fired flame stabilizer 18 at the air inlet of the direct combustion chamber 13, the danger caused by flame backflow in the direct combustion chamber 13 can be avoided. The direct-fired flame stabilizer 18 is conventional technology in this field and will not be described in detail here.

[0049] In this embodiment, as Figure 3 As shown, both the external flow housing 19 and the internal flow housing 25 are equipped with gas distributors 23 at their outlet ends to ensure uniform distribution of clean gas entering the direct combustion chamber 13 or the medium regenerative oxidation chamber 15.

[0050] By installing a gas distributor 23 at the outlet of the annular cavity 20 between the external flow housing 19 and the internal flow housing 25, the clean gas entering the direct combustion chamber 13 can be distributed more evenly, thus facilitating complete combustion of the clean gas in the direct combustion chamber 13. Similarly, by installing a gas distributor 23 at the outlet of the internal flow housing 25, the clean gas entering the regenerative thermal oxidation chamber 15 can be distributed more evenly, thus facilitating complete combustion of the clean gas in the regenerative thermal oxidation chamber 15.

[0051] In this embodiment, as Figure 3 and Figure 4 As shown, the gas distributor 23 includes a partition 27, a gas guide pipe 28 and a baffle 32. The gas guide pipe 28 passes through the partition 27. The baffle 32 is disposed in the middle of the gas outlet end of the gas guide pipe 28 by a support member 31, and an exhaust channel 34 is formed between the baffle 32 and the gas guide pipe 28.

[0052] Specifically, both the outlet end of the annular cavity 20 and the outlet end of the inner confluence shell 25 are equipped with baffles 27. Multiple air guide pipes 28 can be evenly spaced around the baffles 27 inside the annular cavity 20 to improve the uniformity of the distribution of clean gas.

[0053] Furthermore, such as Figure 4 As shown, the air duct 28 is also provided with a central column 29 and multiple connecting plates 30. The central column 29 is located in the middle of the air duct 28, and the multiple connecting plates 30 are evenly distributed along the circumference of the air duct 28 to evenly divide the air duct 28 into multiple guide channels, which can avoid uniform turbulence and help improve the intake speed.

[0054] like Figure 4As shown, in this embodiment, a cover 33 is also provided circumferentially around the edge of the baffle 32, and the end of the cover 33 away from the baffle 32 is inclined toward the guide pipe. When the cleaning gas flows out of the exhaust channel 34, it will flow toward the baffle 27 instead of flowing directly into the middle of the direct combustion chamber 13 or the medium regenerative oxidation chamber 15, which can avoid affecting the flame in the direct combustion chamber 13 or the cleaning gas reacting in the medium regenerative oxidation chamber 15.

[0055] It is understandable that by setting the gas guide pipe 28, the gas in the annular cavity 20 or the inner manifold is introduced into the direct combustion chamber 13 or the medium regenerative oxidation chamber 15. Furthermore, by setting the baffle 32, the direction of the clean gas when it is sprayed out from the gas guide pipe 28 can be controlled, so that the clean gas can flow evenly in all directions, and the uniformity of the clean gas in the direct combustion chamber 13 or the medium regenerative oxidation chamber 15 can be fully guaranteed.

[0056] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal mine gas treatment device, characterized in that, include: A gas diversion device has a first inlet, a first outlet, and a second outlet. Clean gas is delivered to the gas diversion device through the first inlet. The gas diversion device is capable of delivering clean gas with a concentration higher than a preset value to the first outlet, and delivering clean gas with a concentration lower than the preset value and clean gas with a concentration higher than the preset value to the second outlet. A gas storage device, the gas storage device having a second air inlet and a third air outlet, the second air inlet being connected to the first air outlet; A combustion device, comprising a direct combustion chamber and a media regenerative oxidation chamber, wherein the direct combustion chamber is connected to the third gas outlet and the media regenerative oxidation chamber is connected to the second gas outlet; when the concentration of clean gas in the gas diversion device is higher than the preset concentration, the second gas outlet is connected to the direct combustion chamber; when the concentration of clean gas in the gas diversion device is lower than the preset concentration, the second gas outlet is connected to the media regenerative oxidation chamber. The combustion device also includes: shell; A first housing and a heat insulation layer, wherein a first cavity is formed between the circumferential outer wall of the first housing and the inner wall of the outer shell, and the heat insulation layer is filled between the first housing and the outer shell; The second housing is disposed inside the first housing, and a direct combustion chamber is formed between the outer circumferential wall of the second housing and the first housing. The medium regenerative oxidation chamber is formed inside the second housing. An external airflow housing is disposed at the air inlet end of the first housing and is disposed circumferentially in the first housing; An inner manifold housing is disposed at the air inlet end of the second housing and is disposed in the circumferential direction of the second housing. An annular cavity is formed between the inner wall of the outer manifold housing and the circumferential outer wall of the inner manifold housing. An end cap is provided at the air inlet end of the external manifold housing and the internal manifold housing. A first input hole is provided on the end cap at a position opposite to the annular cavity, and a second input hole is provided on the end cap at a position opposite to the inner cavity of the internal manifold housing. The first input hole is connected to the third air outlet, and the second input hole is connected to the second air outlet. A first valve, which connects the third air outlet and the direct combustion chamber; The gas splitting device includes: A gas distribution box, wherein the first air inlet, the first air outlet and the second air outlet are all disposed in the gas distribution box; A gas concentration detector is disposed in the gas distribution box and adjacent to the first gas inlet; The second valve connects the first air outlet and the second air inlet; A valve assembly is disposed on the supply pipeline between the second air outlet and the combustion device to control the on / off connection between the second air outlet and the direct combustion chamber or the media regenerative oxidation chamber.

2. The coal mine gas treatment device according to claim 1, characterized in that, The supply pipeline includes: The main delivery pipeline has an air inlet connected to the second air outlet, and the third air outlet is connected to the main delivery pipeline via an auxiliary pipe. The first branch pipe and the second branch pipe are connected. The air inlet of the first branch pipe is connected to the main delivery pipe, and the air outlet of the first branch pipe is connected to the direct combustion chamber. The air inlet of the second branch pipe is connected to the main delivery pipe, and the air outlet of the second branch pipe is connected to the regenerative oxidation chamber.

3. The coal mine gas treatment device according to claim 2, characterized in that, The valve assembly includes: The third valve is installed on the main delivery pipeline; The fourth valve is located on the first branch pipe; The fifth valve is located on the second branch pipe.

4. The coal mine gas treatment device according to any one of claims 1-3, characterized in that, The direct combustion chamber is located circumferentially outside the regenerative oxidation chamber.

5. The coal mine gas treatment device according to claim 4, characterized in that, The annular cavity is equipped with a direct-fire stabilizer at its outlet.

6. The coal mine gas treatment device according to claim 1, characterized in that, Both the external and internal manifold housings are equipped with gas distributors at their outlet ends to ensure uniform distribution of clean gas entering the direct combustion chamber or the medium regenerative oxidation chamber.

7. The coal mine gas treatment device according to claim 6, characterized in that, The gas distributor includes: partition; A venting tube that penetrates the partition. A baffle is provided at the middle of the air outlet end of the air guide pipe by means of a support member, and an exhaust channel is formed between the baffle and the air guide pipe.

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