A methanol oxidizer

Abstract

The application provides a methanol oxidizer, which comprises an oxidizer shell, the oxidizer shell comprises a feeding section, a catalytic section, a cooling section and a discharging section connected in sequence from top to bottom; one end of the catalytic section towards the feeding section is provided with an auxiliary heating mechanism, and the other end is provided with a catalytic reaction mechanism; the auxiliary heating mechanism comprises a heat collecting cover arranged in the catalytic section and a breather pipe arranged on the heat collecting cover and towards the catalytic reaction mechanism, one end of the breather pipe extending into the heat collecting cover is in communication with the heat collecting cover, and the other end is in communication with the catalytic section. The methanol oxidizer can realize efficient heating of raw material gas entering the catalytic section by arranging the auxiliary heating mechanism at one end of the catalytic section towards the feeding section, so that the raw material gas and the catalyst can react at high temperature, the reaction effect of the raw material gas and the catalyst is improved, the loss of the raw material is reduced, and the quality of the formaldehyde product is improved.

Description

Technical Field

[0001] This invention belongs to the field of oxidizer technology, and in particular relates to a methanol oxidizer. Background Technology

[0002] Currently, the silver-process formaldehyde production mainly consists of the following unit operations: methanol evaporation unit, oxidation reaction unit, formaldehyde absorption unit, and tail gas treatment unit. In the silver-process formaldehyde production, the oxidizer is the core equipment of the methanol production unit. The quality of the oxidizer's design and manufacturing directly affects the quality of the methanol product, methanol consumption, and the oxidizer's lifespan, thus indirectly affecting the company's economic benefits and safe production. Currently, the traditional structure consists of an arched cover, catalyst chamber, and quench section. The arched cover typically has a heat-conducting coil connected to the steam exhaust pipe of the quench section to heat the feed gas. However, temperature control is inconvenient when using steam for heating, especially in the initial reaction stage when steam production is low. This can cause unstable temperatures of the feed gas entering the catalyst chamber, affecting the reaction efficiency between the feed gas and the catalyst, leading to increased feed consumption and hindering the improvement of formaldehyde product quality. Invention Content

[0003] In view of this, the present invention aims to provide a methanol oxidizer to solve the problem of inconvenient control of feed gas temperature, which affects the reaction effect between feed gas and catalyst.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0005] A methanol oxidizer includes an oxidizer shell, which comprises a feed section, a catalytic section, a cooling section, and a discharge section connected sequentially from top to bottom. An auxiliary heating mechanism is provided at one end of the catalytic section facing the feed section, and a catalytic reaction mechanism is provided at the other end. The auxiliary heating mechanism includes a heat collection hood disposed within the catalytic section and a vent pipe disposed on the heat collection hood facing the catalytic reaction mechanism. One end of the vent pipe extends into the heat collection hood and communicates with it, while the other end communicates with the catalytic section. Ventilation holes are provided around the heat collection hood to connect the feed section and the heat collection hood. Heaters are provided on the catalytic section at positions corresponding to the vent holes. One end of each heater extends through the vent hole into the heat collection hood, and the other end is disposed on the catalytic section.

[0006] Furthermore, the end of the vent pipe facing the catalytic reaction mechanism is provided with a gas distribution hood, and the gas distribution hood is provided with a number of air distribution holes.

[0007] Furthermore, the air distribution hood has an arc-shaped recess on the side facing the vent pipe, and at least two connectors are evenly arranged around the recess. Each connector is connected to the air distribution hood at one end and to the vent pipe at the other end, and there is an air passage gap between adjacent connectors.

[0008] Furthermore, the heat collection hood is provided with a heat-conducting ring at one end facing the catalytic reaction mechanism, and the other end extends into the feed section; at least two heat-conducting rings are arranged concentrically, each heat-conducting ring is coaxially arranged with the vent pipe, and there is a flow guiding gap between two adjacent heat-conducting rings.

[0009] Furthermore, the heat collection hood is a conical structure, with the conical end of the heat collection hood facing the gas distributor and the other end facing the catalytic reaction mechanism.

[0010] Furthermore, the feeding section is equipped with a feeding pipe that is connected to the feeding section, and the discharging section is equipped with a discharging pipe that is connected to the discharging section; the cooling section is equipped with an expansion joint, and one end of the cooling section facing the catalytic section is equipped with a steam exhaust pipe, and the other end is equipped with a water inlet pipe. The feeding section is equipped with a heat-conducting coil that is connected to the steam exhaust pipe; both the steam exhaust pipe and the water inlet pipe are connected to the cooling section, and the cooling section is equipped with a heat exchanger for connecting the catalytic section and the discharging section.

[0011] Furthermore, a gas distributor is provided in the feed section corresponding to the position of the feed pipe. The gas distributor is a cylindrical structure and is coaxially arranged with the heat collection hood. There is a ventilation gap between the heat collection hood and the gas distributor.

[0012] Furthermore, the heat collection cover is provided with heat-conducting fins at the positions corresponding to the ventilation gaps. Multiple heat-conducting fins are evenly arranged along the circumference of the heat collection cover, and there is a ventilation gap between two adjacent heat-conducting fins. The ventilation gap is connected to the air gap.

[0013] Furthermore, the catalytic reaction mechanism includes an ignition rest ring disposed within the catalytic section and a copper mesh disposed on the ignition rest ring, wherein the copper mesh is provided with a catalyst.

[0014] Furthermore, the catalytic section is provided with a cylindrical section for setting the ignition rest ring; the cylindrical section is connected to the catalytic section by a connecting plate, and there is a deformation gap between the cylindrical section and the catalytic section; at least two connecting plates are evenly arranged circumferentially along the cylindrical section, each connecting plate is connected to the catalytic section at one end and to the cylindrical section at the other end; the cylindrical section is connected to the ignition rest ring by an adapter, the adapter is an S-shaped structure, at least two adapters are evenly arranged circumferentially along the cylindrical section, and the cylindrical section is provided with a mounting ring that mates with the adapter at the corresponding position.

[0015] Compared with existing technologies, the methanol oxidizer described in this invention has the following advantages:

[0016] This invention discloses a methanol oxidizer. By installing an auxiliary heating mechanism at the end of the catalytic section facing the feed section, the feed gas entering the catalytic section can be efficiently heated. This allows the feed gas and catalyst to react at high temperatures, improving the reaction efficiency, reducing feed loss, and enhancing the quality of the final formaldehyde product. Furthermore, by installing a heat-conducting coil in the feed section and utilizing a gas distributor within the feed section in conjunction with a heat collection hood in the auxiliary heating mechanism, the heating effect and efficiency of the feed gas are improved. This allows the feed gas to heat up rapidly, reducing feed loss in the initial reaction stage and further enhancing the reaction efficiency of this methanol oxidizer. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a methanol oxidizer according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the auxiliary heating mechanism in a methanol oxidizer according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Feeding section; 2. Catalytic section; 3. Cooling section; 4. Discharge section; 5. Feed pipe; 6. Steam exhaust pipe; 7. Expansion joint; 8. Discharge pipe; 9. Water inlet pipe; 10. Heat-conducting coil; 11. Gas distributor; 12. Heat collector cover; 13. Vent pipe; 14. Heater; 15. Gas distribution cover; 16. Heat-conducting ring; 17. Heat-conducting fins; 18. Ignition support ring; 19. Cylindrical section; 20. Connecting plate; 21. Adapter; 22. Mounting ring; 23. Heat exchanger; 24. Connecting parts; 25. Air distribution hole; 26. Gas passage gap; 27. Vent hole. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] A methanol oxidizer, such as Figures 1 to 3 As shown, the oxidizer includes an oxidizer shell, which comprises a feed section 1, a catalytic section 2, a cooling section 3, and a discharge section 4 connected sequentially from top to bottom. Specifically, the feed section 1 and the catalytic section 2, as well as the cooling section 3 and the discharge section 4, can be connected using existing flanges, while the catalytic section 2 and the cooling section 3 can be fixed by welding. Furthermore, those skilled in the art can choose other methods to connect the various sections according to actual needs to form the oxidizer shell, which will not be elaborated here.

[0028] In practical applications, the top of the cooling section 3 can cover the position of the catalytic reaction mechanism on the catalytic section 2, which allows the steam generated in the upper part of the cooling section 3 to directly heat the raw material gas at the catalytic reaction mechanism. In addition, by using steam to heat the lower end of the catalytic section 2, the temperature difference between the upper and lower sides of the tube sheet of the heat exchanger 23 can be reduced, thereby improving the reliability and service life of the heat exchanger 23 during use.

[0029] The aforementioned catalytic section 2 is provided with an auxiliary heating mechanism at one end facing the feed section 1 and a catalytic reaction mechanism at the other end. The auxiliary heating mechanism includes a heat collection hood 12 disposed inside the catalytic section 2 and a vent pipe 13 disposed on the heat collection hood 12 facing the catalytic reaction mechanism. One end of the vent pipe 13 extends into the heat collection hood 12 and is connected to the heat collection hood 12, and the other end is connected to the catalytic section 2. The heat collection hood 12 is provided with vent holes 27 around its perimeter for connecting the feed section 1 and the heat collection hood 12. A heater 14 is provided on the catalytic section 2 at the position corresponding to the vent holes 27. One end of each heater 14 extends into the heat collection hood 12 through the vent hole 27, and the other end is disposed on the catalytic section 2.

[0030] For example, three, four, or more vent holes 27 can be evenly arranged, and a heating cavity exists within the heat collection shroud 12, with each vent hole 27 communicating with the heating cavity. The heat collection shroud 12 can be fixed to the catalytic section 2 by screws or by welding, thus achieving the installation and fixation of the heat collection shroud 12 between the catalytic section 2 and the feed section 1. Furthermore, those skilled in the art can also choose other methods to install the heat collection shroud 12 according to actual needs to achieve stable installation and fixation of the heat collection shroud 12 on the catalytic section 2, which will not be elaborated here.

[0031] In practical applications, heater 14 can be an electric heater, such as the existing methanol explosion-proof electric heater 14. Assembly holes for installing heater 14 can be provided on the catalytic section 2. A flange connection can also be used between heater 14 and catalytic section 2 to ensure the sealing performance of the heater 14 installation point. By installing heater 14 on catalytic section 2 at the position corresponding to the vent 27 of the heat collection hood 12, the heating effect of heater 14 on the feed gas entering the vent 27 is improved. Simultaneously, the heat collection hood 12 can also effectively concentrate heat, which helps to quickly increase the temperature of the heat collection hood 12 itself and the feed gas inside, thereby improving the heating efficiency of heater 14 on the feed gas and ensuring the subsequent reaction effect between the feed gas and the catalyst.

[0032] Optionally, a gas distribution hood 15 is provided at one end of the vent pipe 13 facing the catalytic reaction mechanism, and the gas distribution hood 15 is provided with a plurality of air distribution holes 25. Specifically, the gas distribution hood 15 has an arc-shaped recess on the side facing the vent pipe 13, and at least two connectors 24 are evenly arranged around the perimeter of the recess. Each connector 24 is connected to the gas distribution hood 15 at one end and to the vent pipe 13 at the other end, and there is an air passage gap 26 between adjacent connectors 24.

[0033] For example, two, four, or more connectors 24 can be evenly arranged. Those skilled in the art can select the number of connectors 24 according to actual needs to achieve a stable setting of the gas distributor 15 on the vent pipe 13, ensuring that the gas distributor 15 can effectively disperse the raw material gas discharged through the vent pipe 13, so that the heated raw material gas can evenly contact the catalytic reaction mechanism to achieve the catalytic reaction of the raw material gas. Each connector 24 is fixed at one end to the vent pipe 13 and at the other end to the gas distributor 15.

[0034] In practical applications, the gas distribution hood 15 can be an arc-shaped structure. By setting a recess on the gas distribution hood 15, when the raw material gas is discharged from the heat collection hood 12 through the vent pipe 13, the raw material gas will first enter the gas distribution hood 15. Part of the raw material gas can be dispersed once through the air distribution holes 25 on the gas distribution hood 15 and then continue to flow towards the catalytic reaction mechanism, while the other part of the raw material gas can flow along the surface of the arc-shaped recess and finally flow out of the gas distribution hood 15 through the gas gap 26, realizing the secondary dispersion of the raw material gas. This is beneficial to further improve the dispersion effect of the gas distribution hood 15 on the raw material gas, thereby ensuring that the raw material gas can pass through the catalytic reaction mechanism more evenly.

[0035] Optionally, the heat collection shroud 12 has a heat-conducting ring 16 at one end facing the catalytic reaction mechanism, and the other end extends into the feed section 1. At least two heat-conducting rings 16 are concentrically arranged, each coaxially aligned with the vent pipe 13, and a flow-guiding gap exists between adjacent heat-conducting rings 16. Exemplarily, two, four, or more heat-conducting rings 16 can be concentrically arranged, and each heat-conducting ring 16 can be fixed to the heat collection shroud 12. Both the heat collection shroud 12 and the heat-conducting rings 16 can be made of a thermally conductive metal material, such as steel. Those skilled in the art can also select other suitable materials according to actual needs. By using a thermally conductive material to make the heat collection shroud 12 and the heat-conducting rings 16, the heat from the heater 14 can also be conducted to the heat collection shroud 12 and the heat-conducting rings 16.

[0036] In practical applications, the feed gas flowing along the surface of the arc-shaped concave portion can not only contact the heat-conducting ring 16 for secondary heating, preventing the feed gas from cooling down too quickly before contacting the catalytic reaction mechanism, thus allowing the feed gas to react with the catalytic reaction mechanism at a high temperature, which is beneficial to improving the quality of the catalytic reaction, but also the flow-guiding gaps between the multiple heat-conducting rings 16 can further deflect and distribute the feed gas. The feed gas, upon contact with the heat-conducting rings 16, can flow downwards under the obstruction of the heat-conducting rings 16, thereby preventing the feed gas from concentrating too much at the edge of the catalytic reaction mechanism. By using the gas distribution hood 15 in conjunction with the heat-conducting rings 16 to further disperse the feed gas, the feed gas can flow more evenly to the catalytic reaction mechanism, which is beneficial to further improving the catalytic effect of the catalytic reaction mechanism on the feed gas and reducing feed gas waste.

[0037] Optionally, the heat collection hood 12 is a conical structure, with the conical end of the heat collection hood 12 facing the gas distributor 11 and the other end facing the catalytic reaction mechanism. For example, the feed section 1 is provided with a feed pipe 5, which is connected to the feed section 1; the discharge section 4 is provided with a discharge pipe 8, which is connected to the discharge section 4; the cooling section 3 is provided with an expansion joint 7; one end of the cooling section 3 facing the catalytic section 2 is provided with a steam exhaust pipe 6, and the other end is provided with a water inlet pipe 9, both of which are connected to the cooling section 3; the cooling section 3 is provided with a heat exchanger 23 for connecting the catalytic section 2 and the discharge section 4; and the feed section 1 is provided with a heat-conducting coil 10 connected to the steam exhaust pipe 6. The heat-conducting coil 10 is fixed on the feeding section 1. The heat-conducting coil 10, the feeding section 1, the cooling section 3 and the discharge section 4 can all be the corresponding components on the existing oxidizer. This invention does not involve any improvement to the structure of the heat-conducting coil 10, the feeding section 1, the cooling section 3 and the discharge section 4, so it will not be described in detail here.

[0038] In practical applications, a gas distributor 11 is installed in the feed section 1 corresponding to the feed pipe 5. The gas distributor 11 is a cylindrical structure, coaxially arranged with the heat collection hood 12, and a ventilation gap exists between the heat collection hood 12 and the gas distributor 11. The gas distributor 11 can adopt a frustum-shaped structure, with the smaller diameter end of the frustum-shaped structure aligned with the conical end of the heat collection hood 12. Using a frustum-shaped gas distributor 11 helps to increase the flow time of the raw material gas in the feed section 1, thereby ensuring that the heat-conducting coil 10 can effectively heat the raw material gas. Furthermore, through the cooperation of the heat collection hood 12 and the gas distributor 11, the raw material gas entering the gas distributor 11 can only flow along the ventilation gap and ultimately enters the heat collection hood 12 through the ventilation hole 27. This helps to extend the contact time between the raw material gas and the outer surface of the heat collection hood 12, thus enabling the heat collection hood 12 to also provide a good heating effect on the raw material gas.

[0039] Optionally, heat-conducting fins 17 are provided on the heat collection cover 12 at positions corresponding to the ventilation gaps. Multiple heat-conducting fins 17 are evenly arranged around the circumference of the heat collection cover 12, with ventilation gaps between adjacent heat-conducting fins 17, and these ventilation gaps are connected to the ventilation gaps. For example, the heat-conducting fins 17 can also be made of existing heat-conducting metal materials, such as steel, and are fixed to the outer surface of the heat collection cover 12. By providing multiple heat-conducting fins 17, the surface area of ​​the heat collection cover 12 is increased, thereby further improving the heating effect of the heat collection cover 12 on the raw material gas passing through the ventilation gaps. This achieves multiple utilizations of the heat dissipated by the heater 14, allowing the raw material gas to maintain a high temperature and contact the catalytic reaction mechanism under multi-layer heating from the heat-conducting coil 10, the heat collection cover 12, the heater 14, and the heat-conducting ring 16.

[0040] Optionally, the catalytic reaction mechanism includes an ignition rest ring 18 disposed within the catalytic section 2, and a copper mesh disposed on the ignition rest ring 18, wherein the copper mesh is provided with a catalyst (not shown in the figure). Specifically, the ignition rest ring 18, the copper mesh, and the catalyst can all be corresponding components from existing oxidizers. Those skilled in the art can select appropriate components and their installation methods according to actual needs. This embodiment does not involve improvements to the above components, so they will not be described in detail here.

[0041] The improvement of this embodiment is that a cylindrical section 19 for setting the ignition support ring 18 is provided on the catalytic section 2; the cylindrical section 19 is connected to the catalytic section 2 by a connecting plate 20, and there is a deformation gap between the cylindrical section 19 and the catalytic section 2; the connecting plate 20 is set at one end of the cylindrical section 19 facing the heat collection cover 12, and at least two connecting plates 20 are evenly arranged circumferentially along the cylindrical section 19, with one end of each connecting plate 20 connected to the catalytic section 2 and the other end connected to the cylindrical section 19; the cylindrical section 19 is connected to the ignition support ring 18 by an adapter 21, the adapter 21 is an S-shaped structure, and at least two adapter 21s are evenly arranged circumferentially along the cylindrical section 19, and a mounting ring 22 that cooperates with the adapter 21 is provided on the cylindrical section 19 at the position corresponding to the adapter 21.

[0042] For example, two, four, or more connecting plates 20 can be evenly arranged. Each connecting plate 20 is fixed at one end to the cylindrical section 19 and at the other end to the catalytic section 2. The cylindrical section 19 and the catalytic section 2 are coaxially arranged, and the mounting ring 22 is fixed to the cylindrical section 19. By using the cylindrical section 19 to install the ignition holder 18, the cylindrical section 19 can separate the ignition holder 18 from the catalytic section 2, so that the cylindrical section 19 can play a certain role in heat insulation, which is beneficial to improving the service life of the catalytic section 2. In addition, by leaving a deformation gap between the cylindrical section 19 and the catalytic section 2, even if the cylindrical section 19 deforms due to heat, it will not come into contact with the catalytic section 2, which is beneficial to further improve the heat insulation effect of the cylindrical section 19 and reduce the impact of the auxiliary heating mechanism on the structural stability and reliability of the catalytic section 2.

[0043] In practical applications, two, three, or more adapter pieces 21 can be evenly arranged, and corresponding mounting rings 22 are also arranged one-to-one with the adapter pieces 21. By adopting an S-shaped adapter piece 21, one end of the adapter piece 21 can hook onto the ignition retainer ring 18, while the other end can be inserted into the mounting ring 22, thereby achieving the limiting and fixing of the ignition retainer ring 18. At the same time, the S-shaped adapter piece 21 also has good deformation performance, which is beneficial to improving the service life of the adapter piece 21 at high temperatures.

[0044] The specific working process of this methanol oxidizer is as follows:

[0045] The raw material gas enters the feed section 1 through the feed pipe 5, then enters the heat collector 12 through the gas distributor 11 for heating, and then enters the catalytic section 2 through the vent pipe 13 for reaction. Finally, the gas obtained after the reaction is cooled by the heat exchanger 23 in the cooling section 3 and enters the discharge section 4, and is finally discharged from the oxidizer body through the discharge pipe 8, completing the oxidation reaction process. Cooling water can enter the cooling section 3 through the water inlet pipe 9 and cool the gas obtained from the reaction through the heat exchanger 23. The steam generated by the heat exchanger 23 in the cooling section 3 can flow into the heat transfer coil 10 through the steam discharge pipe 6 to preheat the raw material gas in the feed section 1.

[0046] This invention discloses a methanol oxidizer. By installing an auxiliary heating mechanism at the end of the catalytic section facing the feed section, the feed gas entering the catalytic section can be efficiently heated. This allows the feed gas and catalyst to react at high temperatures, improving the reaction efficiency, reducing feed loss, and enhancing the quality of the final formaldehyde product. Furthermore, by installing a heat-conducting coil in the feed section and utilizing a gas distributor within the feed section in conjunction with a heat collection hood in the auxiliary heating mechanism, the heating effect and efficiency of the feed gas are improved. This allows the feed gas to heat up rapidly, reducing feed loss in the initial reaction stage and further enhancing the reaction efficiency of this methanol oxidizer.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A methanol oxidizer, comprising an oxidizer shell, the oxidizer shell comprising, from top to bottom, a feed section (1), a catalytic section (2), a cooling section (3), and a discharge section (4), characterized in that: The catalytic section (2) is provided with an auxiliary heating mechanism at one end facing the feed section (1) and a catalytic reaction mechanism at the other end. The auxiliary heating mechanism includes a heat collection hood (12) installed inside the catalytic section (2) and a vent pipe (13) installed on the heat collection hood (12) facing the catalytic reaction mechanism. One end of the vent pipe (13) extends into the heat collection hood (12) and is connected to the heat collection hood (12), and the other end is connected to the catalytic section (2). The heat collection hood (12) is provided with vent holes (27) around its perimeter for connecting the feed section (1) and the heat collection hood (12). A heater (14) is provided on the catalytic section (2) at the position corresponding to the vent holes (27). One end of each heater (14) passes through the vent hole (27) and extends into the heat collection hood (12), and the other end extends into the heat collection hood (12). It is installed on the catalytic section (2); the end of the vent pipe (13) facing the catalytic reaction mechanism is provided with a gas distribution hood (15), and the gas distribution hood (15) is provided with a plurality of air distribution holes (25); the side of the gas distribution hood (15) facing the vent pipe (13) is provided with an arc-shaped recess, and at least two connectors (24) are evenly arranged around the recess, each connector (24) is connected to the gas distribution hood (15) at one end and to the vent pipe (13) at the other end, respectively. There is an air passage gap (26) between two adjacent connecting parts (24); the heat collection hood (12) is provided with a heat-conducting ring (16) at one end facing the catalytic reaction mechanism, and the other end extends into the feed section (1); at least two heat-conducting rings (16) are arranged concentrically, and each heat-conducting ring (16) is coaxially arranged with the vent pipe (13), and there is a flow guide gap between two adjacent heat-conducting rings (16); the heat collection hood (12) is a conical structure, and the conical end of the heat collection hood (12) faces the gas distribution. The gas distributor (11) is set with one end facing the catalytic reaction mechanism. The feed section (1) is provided with a feed pipe (5), which is connected to the feed section (1). A gas distributor (11) is provided in the feed section (1) at the position corresponding to the feed pipe (5). The gas distributor (11) is a cylindrical structure. The gas distributor (11) is coaxially arranged with the heat collection cover (12), and there is a ventilation gap between the heat collection cover (12) and the gas distributor (11).

2. The methanol oxidizer according to claim 1, characterized in that: The discharge section (4) is provided with a discharge pipe (8), which is connected to the discharge section (4); the cooling section (3) is provided with an expansion joint (7), and the cooling section (3) is provided with a steam exhaust pipe (6) at one end facing the catalytic section (2) and a water inlet pipe (9) at the other end. The cooling section (3) is provided with a heat exchanger (23) for connecting the catalytic section (2) and the discharge section (4); the steam exhaust pipe (6) and the water inlet pipe (9) are both connected to the cooling section (3), and the feed section (1) is provided with a heat-conducting coil (10) connected to the steam exhaust pipe (6).

3. A methanol oxidizer according to claim 1, characterized in that: The heat collection cover (12) is provided with heat-conducting fins (17) at the position corresponding to the ventilation gap. Multiple heat-conducting fins (17) are evenly arranged along the circumference of the heat collection cover (12). There is a ventilation gap between two adjacent heat-conducting fins (17), and the ventilation gap is connected to the ventilation gap.

4. A methanol oxidizer according to claim 1, characterized in that: The catalytic reaction mechanism includes an ignition ring (18) set in the catalytic section (2) and a copper mesh set on the ignition ring (18), wherein the copper mesh is provided with a catalyst.

5. A methanol oxidizer according to claim 4, characterized in that: The catalytic section (2) is provided with a cylindrical section (19) for setting the ignition support ring (18); the cylindrical section (19) is connected to the catalytic section (2) by a connecting plate (20), and there is a deformation gap between the cylindrical section (19) and the catalytic section (2); at least two connecting plates (20) are evenly arranged along the circumference of the cylindrical section (19), and each connecting plate (20) is connected to the catalytic section (2) at one end and to the cylindrical section (19) at the other end; the cylindrical section (19) is connected to the ignition support ring (18) by a connector (21), the connector (21) is an S-shaped structure, at least two connectors (21) are evenly arranged along the circumference of the cylindrical section (19), and the cylindrical section (19) is provided with a mounting ring (22) that cooperates with the connector (21) at the position corresponding to the connector (21).

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