Catalytic combustion heating device

Abstract

The invention discloses a catalytic combustion heating device which comprises an outer barrel and an inner barrel, and a gas channel is formed between the outer barrel and the inner barrel. A mixing barrel communicated with the interior of the inner barrel is arranged on one side of the inner barrel, a gas channel is formed in an inner cavity of the mixing barrel, the two ends of the gas channel are communicated with the gas channel, and a gas exhaust pipe penetrating through the outer barrel is formed on the other side of the inner barrel; a gas inlet pipe is further arranged on the same side of the fuel gas exhaust pipe and penetrates through the outer barrel to be communicated with the gas channel. A fuel channel is formed in the cylinder wall of the inner cylinder body; on the same side of the fuel gas exhaust pipe, the inlet end of the fuel channel is communicated with a fuel inlet pipe penetrating through the outer barrel, on the opposite side of the fuel gas exhaust pipe, the outlet end of the fuel channel is communicated with a fuel outlet pipe extending into the fuel gas channel, and a catalyst carrier is arranged in an inner cavity of the inner barrel; and the fuel gas exhaust pipe, the inner cavity of the inner barrel, the fuel gas channel, the fuel channel, the gas channel and the gas inlet pipe are sequentially communicated to form a complete catalytic reaction passage.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange, in particular to a catalytic combustion temperature-raising device. Background Art

[0002] In recent years, catalytic technology has played a key role in industrial heating processes. However, the structural design limitations of traditional catalytic heating devices result in slow heating rates, insufficient thermal efficiency and energy utilization, and thus make it difficult to efficiently concentrate and transfer heat energy.

[0003] Therefore, designing a catalytic combustion heating device that can heat up quickly, has high energy utilization and low heat loss rate has become an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art in slow heating, low energy utilization and high heat loss rate, and provide a catalytic combustion heating device, in which the outer cylinder and the inner cylinder of the device are arranged at intervals to form a gas channel B for the circulation of high-temperature oxidizing gas, and a fuel channel is opened on the cylinder wall of the inner cylinder between the outer surface and the inner surface of the cylinder wall of the inner cylinder, and the inner cavity of the inner cylinder is provided with a catalyst carrier, and the gas channel B completely wraps the inner cylinder. In the initial stage, the high-temperature oxidizing gas heats the fuel in the cylinder wall of the inner cylinder and the catalyst carrier in the inner cavity of the inner cylinder. The heated fuel and the high-temperature oxidizing gas are mixed in the fuel gas channel C and enter the inner cavity of the inner cylinder for catalytic reaction. The heat generated by the catalytic reaction is used to reversely heat the fuel in the cylinder wall of the inner cylinder and the high-temperature oxidizing gas outside the cylinder wall of the inner cylinder. Through this two-way heating method with high energy utilization, the catalytic combustion heating device can achieve a rapid heating effect, and the high-temperature fuel gas discharged from the fuel gas exhaust pipe can be used for subsequent heating of industrial products.

[0005] The purpose of the present invention is mainly achieved through the following technical solutions:

[0006] A catalytic combustion temperature-raising device, comprising an outer cylinder and an inner cylinder, wherein a gas channel B for high-temperature oxidizing gas to flow is formed between the outer cylinder and the inner cylinder;

[0007] A mixing cylinder connected to the inner part of the inner cylinder is arranged inside one side of the inner cylinder, and the inner cavity of the mixing cylinder forms a gas channel C for collecting high-temperature oxidizing gas and fuel. Both ends of the gas channel C are connected to the gas channel B. A gas exhaust pipe penetrating the top of the outer cylinder is formed on the other side of the inner cylinder;

[0008] A gas inlet pipe is also provided on the same side of the gas exhaust pipe, and the gas inlet pipe penetrates the outer cylinder and communicates with the gas channel B;

[0009] A fuel channel is also provided in the inner cylinder wall between the outer surface and the inner surface of the inner cylinder wall;

[0010] On the same side of the gas exhaust pipe, the inlet end of the fuel channel is connected to the fuel inlet pipe that penetrates the outer cylinder, and on the opposite side of the gas exhaust pipe, the outlet end of the fuel channel is connected to the fuel outlet pipe that extends to the inside of the gas channel C;

[0011] The gas exhaust pipe, the inner cavity of the inner cylinder, the gas channel C, the fuel channel, the gas channel B and the gas intake pipe are sequentially connected to form a complete catalytic reaction path;

[0012] A fuel gas catalyst carrier is also arranged in the inner cavity of the inner cylinder between the fuel gas exhaust pipe and the mixing cylinder.

[0013] At present, catalytic combustion devices are mainly used in areas such as reducing harmful substances emitted by automobiles, preheating battery packs and solid oxide fuel cells (SOFCs) for new energy vehicles, so that battery packs and solid oxide fuel cells (SOFCs) can quickly reach the temperature required for their respective work, thereby performing work in their respective related work areas.

[0014] Traditional catalytic devices usually consist of a gas channel C and a catalytic channel, and rely on a constant heat source (such as the heat output of the engine or electric heating technology) to heat the gas and fuel in the gas channel C, and heat the catalyst in the catalytic channel for catalytic reaction; this design makes it impossible to effectively recycle the heat generated in the catalytic channel, resulting in problems such as low heat utilization, slow catalytic heating efficiency and large heat loss. This makes it impossible to meet the needs of quickly processing harmful substances emitted by automobiles, and unable to quickly preheat new energy vehicle battery packs and solid oxide fuel cells (SOFCs).

[0015] In view of the above-mentioned defects, the inventors of the present application have designed a catalytic combustion heating device, in which the outer cylinder and the inner cylinder of the device are arranged at intervals to form a gas channel B for the circulation of high-temperature oxidizing gas. A fuel channel is also provided on the wall of the inner cylinder, and the fuel channel is located between the outer surface and the inner surface of the wall of the inner cylinder. The internal cavity of the inner cylinder is provided with a catalyst carrier. The high-temperature oxidizing gas completely wraps the fuel channel and the catalyst carrier to preliminarily heat the fuel and the catalyst carrier. After the fuel and the high-temperature oxidizing gas undergo a certain degree of combustion reaction in the internal cavity of the mixing cylinder, a catalytic reaction is carried out on the catalyst carrier. The heat generated by the catalytic reaction reversely heats the fuel in the fuel channel and the high-temperature oxidizing gas in the gas channel B. Through this two-way heating method and the efficient recovery and utilization of the heat generated by the catalytic reaction, the heat loss is reduced and the heat utilization rate is improved, thereby effectively shortening the time for the catalyst to reach the optimal working temperature.

[0016] Furthermore, the gas outlet end of the gas exhaust pipe is connected to a preheating box, and the preheating box is fixedly connected to a battery module.

[0017] Furthermore, the battery module is a new energy vehicle battery pack and a solid oxide fuel cell.

[0018] Furthermore, the port on the other side of the inner cylinder is bent outward and extended to form a cone, and the cone mouth of the cone protrudes outward to form a gas exhaust pipe that passes through the top of the outer cylinder.

[0019] Furthermore, the fuel channel is a spiral channel wound inside the wall of the inner cylinder.

[0020] Furthermore, the fuel outlet pipe extends to the central portion of the fuel gas channel C.

[0021] Furthermore, the catalyst carrier includes a first catalyst carrier and a second catalyst carrier which are arranged at intervals, and the first catalyst carrier and the second catalyst carrier are arranged at intervals in the inner cavity of the inner cylinder to form a catalytic reaction channel A.

[0022] Furthermore, the inner surface of the bottom of the outer cylinder is convex outward to form an arc-shaped guide plate;

[0023] A plurality of evenly distributed gas outlet holes are provided on the cylinder wall of the mixing cylinder facing the inner surface of the arc-shaped guide plate, and the gas outlet holes are communicated with the inner cavity of the inner cylinder.

[0024] Furthermore, a temperature detection tube and a pressure detection tube are also provided on the outer cylinder, and the temperature detection tube and the pressure detection tube penetrate the outer cylinder and extend into the outer cylinder until they are connected with the gas channel C.

[0025] Furthermore, the outer surface of the outer cylinder is also wrapped with thermal insulation cotton.

[0026] In summary, the present invention has the following beneficial effects compared with the prior art:

[0027] The inventor of the present application has designed a catalytic combustion heating device, in which an outer cylinder and an inner cylinder are spaced apart to form a gas channel B for the circulation of high-temperature oxidizing gas. A fuel channel is also provided on the wall of the inner cylinder between the outer surface and the inner surface of the cylinder wall of the inner cylinder. A catalyst carrier is provided in the internal cavity of the inner cylinder. The high-temperature oxidizing gas completely wraps the fuel channel and the catalyst carrier to preliminarily heat the fuel and the catalyst carrier. After the fuel and the high-temperature oxidizing gas undergo a certain degree of combustion reaction in the internal cavity of the mixing cylinder, a catalytic reaction is carried out on the catalyst carrier. The heat generated by the catalytic reaction reversely heats the fuel in the fuel channel and the high-temperature oxidizing gas in the gas channel B. Through this two-way heating method and the efficient recovery and utilization of the heat generated in the catalytic reaction channel A, the heat loss is reduced and the heat utilization rate is improved, thereby effectively shortening the time for the catalyst to reach the optimal working temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0029] Figure 1 A schematic diagram of the overall structure of the catalytic combustion heating device;

[0030] Figure 2 It is a schematic diagram of the structure of the outer cylinder, inner cylinder, mixing cylinder and gas outlet pipe of the catalytic combustion heating device;

[0031] Figure 3 It is a schematic diagram of the structural components inside the outer cylinder of the catalytic combustion heating device;

[0032] Figure 4 It is a schematic diagram of the structure of the fuel channel on the inner cylinder wall of the catalytic combustion heating device;

[0033] Figure 5 It is a schematic diagram of the structure of the gas inlet pipe, the gas outlet pipe, the fuel inlet pipe, the temperature detection pipe and the pressure detection pipe on the outer cylinder of the catalytic combustion heating device;

[0034] Figure 6 It is a schematic diagram of the flow paths of the gas channel B, the fuel gas channel C and the catalytic reaction channel A in the outer cylinder of the catalytic combustion heating device;

[0035] Figure 7 A schematic diagram of the temperature in the catalytic reaction channel of the catalytic combustion temperature-raising device compared with a conventional exhaust catalytic device;

[0036] Figure 8 A schematic diagram of harmful substances discharged by the catalytic combustion heating device compared with a traditional exhaust catalytic device;

[0037] Fig. 9 A schematic diagram of preheating a new energy vehicle battery pack through the catalytic combustion heating device;

[0038] Fig.10 A schematic diagram of preheating a solid oxide fuel cell by means of the catalytic combustion heating device.

[0039] The names corresponding to the reference numerals are:

[0040] 1-outer cylinder; 2-inner cylinder; 3-mixing cylinder; 4-gas exhaust pipe; 5-gas inlet pipe; 6-fuel channel; 61-fuel inlet pipe; 62-fuel outlet pipe; 7-cone cylinder; 8-first catalytic carrier; 9-second catalytic carrier; 10-pad; 11-arc guide plate; 12-gas outlet hole; 13-temperature detection tube; 14-insulation cotton; 15-pressure detection tube; 16-preheating box; 17-battery module; 18-electric heater. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of the present invention.

[0047] In the following description, suffixes such as "module", "component", "assembly" or "unit" are used only to facilitate the description of the present invention and have no specific meanings. Therefore, they can be used in combination.

[0048] The present invention will be further described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0049] like Figures 1 to 10 As shown, a catalytic combustion heating device comprises:

[0050] It comprises an outer cylinder 1 and an inner cylinder 2, wherein a gas channel B for high-temperature oxidizing gas to flow is formed between the outer cylinder 1 and the inner cylinder 2;

[0051] A mixing cylinder 3 is provided inside one side of the inner cylinder 2 and is connected to the inside thereof. The internal cavity of the mixing cylinder 3 forms a gas channel C for collecting high-temperature oxidizing gas and fuel. Both ends of the gas channel C are connected to the gas channel B. A gas exhaust pipe 4 is formed on the other side of the inner cylinder 2 and passes through the top of the outer cylinder 1.

[0052] A gas intake pipe 5 is also provided on the same side of the gas exhaust pipe 4, and the gas intake pipe 5 passes through the outer cylinder 1 and communicates with the gas channel B;

[0053] A fuel channel 6 is also provided in the wall of the inner cylinder 2 between the outer surface and the inner surface of the wall of the inner cylinder 2;

[0054] On the same side of the gas exhaust pipe 4, the inlet end of the fuel channel 6 is communicated with a fuel inlet pipe 61 penetrating the outer cylinder 2, and on the opposite side of the gas exhaust pipe 4, the outlet end of the fuel channel 6 is communicated with a fuel outlet pipe 62 extending into the gas channel C;

[0055] The gas exhaust pipe 4, the inner cavity of the inner cylinder 2, the gas channel C, the fuel channel 6, the gas channel B and the gas intake pipe 5 are connected in sequence to form a complete catalytic passage;

[0056] A gas catalyst carrier is also disposed in the inner cavity of the inner cylinder 2 between the gas exhaust pipe 4 and the mixing cylinder 3 .

[0057] In the implementation of this embodiment, the fuel flowing in from the fuel inlet pipe 61 is a clean liquid fuel such as methanol, ethanol or ethylene glycol; the high-temperature oxidizing gas is the high-temperature exhaust gas generated by the automobile engine, or the high-temperature air heated by the electric heater 18. When the high-temperature oxidizing gas is the exhaust gas, Figure 5 As shown, the tail gas directly enters the outer cylinder 1 from the gas inlet pipe 5. When the high-temperature oxidizing gas is air, Figure 1 As shown, air is heated by the electric heater 18 and then enters the outer cylinder 1 from the gas inlet pipe 5. The gas channel B wraps the inner cylinder 2. The high-temperature oxidizing gas in the gas channel B can initially heat the catalyst carrier in the internal cavity of the inner cylinder 2 and the fuel in the fuel channel 6 on the cylinder wall of the inner cylinder 2. After being heated by the high-temperature oxidizing gas, the fuel enters the fuel gas channel C together with the high-temperature oxidizing gas for a certain degree of mixed combustion reaction, and then enters the internal cavity of the inner cylinder 2 for a full catalytic reaction. The heat generated by the catalytic reaction reversely heats the fuel in the fuel channel 6 and the high-temperature oxidizing gas in the gas channel B. Through this two-way heating method and the efficient recovery and utilization of the heat generated by the catalytic reaction, the heat loss is reduced and the heat utilization rate is improved, thereby effectively shortening the time for the catalyst to reach the optimal working temperature.

[0058] In the implementation of this embodiment, the gas inlet pipe 5 and the fuel inlet pipe 61 are arranged on the same side of the gas exhaust pipe 4. The advantage of such a pipeline layout is that the flow direction of the high-temperature oxidizing gas and the fuel is consistent, thereby extending the contact time between the high-temperature oxidizing gas and the fuel, so that the high-temperature oxidizing gas can more efficiently exchange heat with the fuel in the fuel channel 6, so that the fuel 6 can be quickly heated, thereby effectively shortening the time for the catalyst of the catalytic combustion heating device to reach the working temperature.

[0059] In the implementation of this embodiment, Figure 7As shown, the broken line on the upper left of the figure is a graph showing the change of the working temperature of the catalyst in the catalytic combustion heating device of the present invention over time, and the broken line on the lower right is a graph showing the change of the working temperature of the catalyst in the traditional catalytic device over time. Compared with the traditional catalytic device, the traditional structure and the catalytic combustion heating device of the present invention reach a similar working temperature of the catalyst before 5 minutes, and as time increases, in the interval of 15 to 20 minutes, the working temperature of the catalyst in the traditional catalytic device reaches a maximum of 600°C in this time period, while the catalytic combustion heating device of the present invention can quickly heat up to about 700°C in this time period through a two-way heating method and efficient recovery of the heat generated by the catalytic reaction; in addition, the catalytic combustion heating device controls the inflow of fuel in the fuel inlet pipe 61, and the high-temperature gas in the gas channel B, the gas channel C and the catalyst carrier in the internal cavity of the inner cylinder 2, so that the catalytic combustion heating device can reach a limit temperature of about 1300°C to 1400°C.

[0060] In this embodiment, Figure 8 As shown, when the high-temperature oxidizing gas flowing into the gas channel B is exhaust gas, compared with the traditional exhaust catalytic device, the CO discharged by the traditional structure is 263 mg / km and the THC is 110 mg / km, while the catalytic combustion and heating device of the present invention cooperates with the gas channel B, the fuel channel 6, the gas channel C and the catalytic reaction channel A, and the CO discharged by the gas outlet pipe 4 is 147 mg / km and the THC is 61 mg / km, which effectively reduces the emission of pollutants.

[0061] As a further solution of the present invention, the gas outlet end of the gas exhaust pipe 4 is connected to a preheating box 16 , and the preheating box 16 is fixedly connected to a battery module 17 .

[0062] During implementation of this embodiment, when the high-temperature oxidizing gas flowing into the catalytic combustion heating device is air, the high-temperature fuel gas flowing out of the fuel gas exhaust pipe 4 flows into the preheating box 16 to preheat the battery module 17 .

[0063] As a further solution of the present invention, the battery module 17 is a new energy vehicle battery pack and a solid oxide fuel cell.

[0064] During the implementation of this example, when the high-temperature oxidizing gas flowing into the gas channel B is air, the air inlet of the gas inlet pipe 5 is connected to the electric heater 18. The electric heater 18 is a traditional air heating device (such as a heat exchanger, an air heater or a hot air blower, etc.), which is not specifically described here. In this embodiment, the temperature of the high-temperature oxidizing gas can be adjusted by controlling the output power of the electric heater 18; the temperature of the high-temperature oxidizing gas flowing out of the gas exhaust pipe 4 of the catalytic combustion heating device can be adjusted by adjusting the temperature of the high-temperature oxidizing gas and by controlling the inflow of fuel in the fuel inlet pipe 61. In this embodiment, Fig. 9 As shown, when the battery module 17 is a new energy vehicle battery pack, the new energy vehicle battery pack is arranged on the top surface of the preheating box 16. At this time, the fuel flow rate of the fuel inlet pipe 61 is 5L / min. After sufficient catalytic reaction, the fuel gas is discharged through the fuel gas exhaust pipe 4 and flows into the preheating box 16. During preheating, the temperature in the preheating box 16 is 25°C. After the new energy vehicle battery pack is preheated, it is discharged from the exhaust pipe of the preheating box 16. In this embodiment, Fig.10 As shown, when the battery module 17 is a solid oxide fuel cell (i.e., SOFC), the solid oxide fuel cell is arranged in the preheating box 16. At this time, the fuel flow rate of the fuel inlet pipe 61 is 750L / min. After sufficient catalytic reaction, the fuel gas is discharged through the fuel gas exhaust pipe 4 and flows into the preheating box 16. During preheating, the temperature in the preheating box 16 is 750°C. After the solid oxide fuel cell is preheated, it is discharged from the exhaust pipe of the preheating box 16.

[0065] As a further solution of the present invention, the port on the other side of the inner cylinder 2 is bent outward and extended to form a cone 7, and the cone mouth of the cone 7 protrudes outward to form a gas exhaust pipe 4 that passes through the top of the outer cylinder 1.

[0066] When this embodiment is implemented, the purpose of the conical design of the cone cylinder 7 is to increase the heat exchange area of ​​the gas channel B and ensure that the high-temperature oxidizing gas flowing into the gas channel evenly heats the fuel channel 6 and the internal cavity of the inner cylinder 2; at the same time, the purpose of the conical design is also to increase the flow rate of the high-temperature oxidizing gas flowing into the gas channel B. The conical design of the cone cylinder 7 increases the area of ​​the gas channel B. When the heat generated by the catalytic reaction is exchanged to the gas channel B through the cone cylinder 7, more heat is provided, thereby improving the heat utilization rate. The conical design allows the high-temperature oxidizing gas to form turbulence on the outer surface of the cone cylinder 7, which can more evenly wrap the inner cylinder 2, so that the heat generated by the catalytic reaction in the inner cylinder can fully exchange heat with the oxidizing gas flowing into the gas channel B. In addition, the conical cone cylinder 7 design can reduce the back pressure of the high-temperature oxidizing gas flowing into the gas channel B through the gas inlet pipe 5, thereby keeping the flow rate of the oxidizing gas unchanged.

[0067] As a further solution of the present invention, the fuel channel 6 is a spiral channel wound inside the wall of the inner cylinder 2 .

[0068] When this embodiment is implemented, a fuel channel 6 is opened on the wall of the inner cylinder 2 by etching technology, and the fuel channel 6 is coiled inside the wall of the inner cylinder 2. This design makes the structure more compact, and the spiral fuel channel 6 can occupy a larger surface area in a compact space, thereby enhancing the heat exchange efficiency, so that the heat generated by the catalytic combustion reaction in the inner cylinder 3 can be used for more uniform and sufficient heat exchange with the fuel in the fuel channel 6.

[0069] As a further solution of the present invention, the fuel outlet pipe 62 extends to the central position of the gas channel C.

[0070] When this embodiment is implemented, the fuel outlet pipe 62 extends to the central part of the gas channel C, so that after the fuel flows out from the central part of the gas channel C, it can be more evenly mixed with the high-temperature oxidizing gas flowing into the central part from both ends of the gas channel C, thereby improving the mixing degree in the gas channel C.

[0071] As a further solution of the present invention, the catalyst carrier includes a first catalyst carrier 8 and a second catalyst carrier 9 which are spaced apart from each other. The first catalyst carrier 8 and the second catalyst carrier 9 are spaced apart from each other in the inner cavity of the inner cylinder 2 to form a catalytic reaction channel A.

[0072] When this embodiment is implemented, by keeping the first catalytic carrier 8 and the second catalytic carrier 9 spaced apart, and keeping the second catalytic carrier 9 and the fuel gas outlet pipe 5 spaced apart, multiple spacing spaces help to control the flow rate of the reaction gas. This spacing allows the reaction gas to have sufficient residence time on the surface of each catalyst carrier, so that the catalytic combustion reaction can be carried out in stages, increasing the contact probability of the reaction, making the catalytic reaction more complete. At the same time, the spacing space can prevent local overheating and can evenly dissipate the heat generated in the internal cavity of the inner cylinder 2 to the gas channel B and the fuel channel 6.

[0073] When this embodiment is implemented, Figure 3 As shown, the outer surfaces of the first catalytic carrier 8 and the second catalytic carrier 9 are both provided with a liner 10, which wraps the first catalytic carrier 8 and the second catalytic carrier 9 and squeezes the inner surface of the inner cylinder 2; the liner 10 can enhance the stability of the first catalytic carrier 8 and the second catalytic carrier 9 in the internal cavity of the inner cylinder 2 to avoid damage under high temperature and high pressure, thereby ensuring the continuity of the reaction process; in addition, the first catalytic carrier 8 and the second catalytic carrier 9 can also be fixed to the internal cavity of the inner cylinder 2 by bonding, welding, embedding or filling. The above-mentioned fixing method is a traditional fixing method in the field of catalytic devices and is not described in detail here.

[0074] In the implementation of this embodiment, precious metal catalytic coatings such as platinum, palladium and rhodium are provided on the end surfaces of the first catalytic carrier 8 and the second catalytic carrier 9.

[0075] As a further solution of the present invention, the inner surface of the bottom of the outer cylinder 1 is convex outward to form an arc-shaped guide plate 11;

[0076] A plurality of evenly distributed gas outlet holes 12 are provided on the wall of the mixing cylinder 3 facing the inner surface of the arc-shaped guide plate 11 , and the gas outlet holes 12 are communicated with the inner cavity of the inner cylinder 2 .

[0077] When this embodiment is implemented, on the side where the mixing cylinder 3 is connected to the inner cylinder 2, the cylinder wall of the mixing cylinder 3 is a smooth solid cylinder wall and does not have a gas outlet hole 12. The mixing cylinder 3 and the inner surface of the arc-shaped guide plate 11 face the opposite side, and a plurality of evenly distributed gas outlet holes 12 are opened on the cylinder wall of the mixing cylinder 3. The high-temperature oxidizing gas and the fuel are mixed in the gas channel C, and turbulence is formed in the gas channel C. Then, they flow out from the evenly distributed gas outlet holes 12. The flow direction of the discharged gas is changed by the cooperation of the arc-shaped guide plate 11, so that the gas flows in the opposite direction to the outer wall of the inner cylinder 3, flows into the first catalytic carrier 8 around the circumference of the mixing cylinder 3, and the gas outlet holes 12 and the arc-shaped guide plate 11 cooperate to form a turbulent flow. , so that the gas can enter the end face of the first catalytic carrier 8 more evenly for a sufficient catalytic combustion reaction, and prevent the end face of the first catalytic carrier 8 from being locally overheated and damaged due to excessive concentration of the gas flow. The purpose of setting the wall of one side of the mixing cylinder 3 as a solid wall with an opening is to allow the high-temperature oxidizing gas and the fuel to stay in the gas channel C for a longer time, so that the two are mixed more evenly and a more sufficient combustion reaction is carried out; and the arc-shaped guide plate 11 can not only guide and change the gas flow direction, but also prevent the bottom of the outer cylinder 1 from being impacted by the local gas flow, reduce the abnormal noise caused by the structural stress concentration, and thus maintain the structural stability of the entire device.

[0078] As a further solution of the present invention, a temperature detection tube 13 and a pressure detection tube 15 are also provided on the outer cylinder 1. The temperature detection tube 13 and the pressure detection tube 15 penetrate the outer cylinder 1 and extend into the outer cylinder until they are connected to the gas channel C.

[0079] When this embodiment is implemented, the working temperature of the catalyst can be monitored in real time by connecting a temperature detection device to the temperature detection tube 13, and the temperature and pressure values ​​of the catalytic combustion heating device can be monitored in real time by connecting a pressure gauge to the pressure detection tube 15, so as to determine whether the catalytic combustion heating device is working normally.

[0080] As a further solution of the present invention, the outer surface of the outer cylinder 1 is also wrapped with thermal insulation cotton 14.

[0081] When this embodiment is implemented, the provision of the thermal insulation cotton 14 helps to prevent heat loss in the entire catalytic combustion heating device. When the catalyst reaches the optimal operating temperature, the temperature of the entire catalytic combustion heating device is maintained within the optimal operating temperature range of the catalyst through the mutual cooperation of the thermal insulation cotton 14, gas channel B, fuel gas channel C and catalytic reaction channel A.

[0082] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A catalytic combustion heating device, characterized in that: It comprises an outer cylinder (1) and an inner cylinder (2), wherein a gas channel B for the circulation of high-temperature oxidizing gas is formed between the outer cylinder (1) and the inner cylinder (2); A mixing cylinder (3) is provided inside one side of the inner cylinder (2) and is in communication with the inner part thereof. The inner cavity of the mixing cylinder (3) forms a gas channel C for collecting high-temperature oxidizing gas and fuel. Both ends of the gas channel C are in communication with the gas channel B. A gas exhaust pipe (4) is formed on the other side of the inner cylinder (2) and passes through the top of the outer cylinder (1); A gas intake pipe (5) is also provided on the same side of the gas exhaust pipe (4), and the gas intake pipe (5) passes through the outer cylinder (1) and is in communication with the gas channel B; A fuel channel (6) is also provided in the wall of the inner cylinder (2) between the outer surface and the inner surface of the wall of the inner cylinder (2); On the same side of the gas exhaust pipe (4), the inlet end of the fuel channel (6) is in communication with a fuel inlet pipe (61) penetrating the outer cylinder (2), and on the opposite side of the gas exhaust pipe (4), the outlet end of the fuel channel (6) is in communication with a fuel outlet pipe (62) extending into the interior of the gas channel C; The gas exhaust pipe (4), the inner cavity of the inner cylinder (2), the gas channel C, the fuel channel (6), the gas channel B and the gas intake pipe (5) are connected in sequence to form a complete catalytic reaction passage; A fuel gas catalyst carrier is also provided in the inner cavity of the inner cylinder (2) between the fuel gas exhaust pipe (4) and the mixing cylinder (3).

2. A catalytic combustion heating device according to claim 1, characterized in that: The gas outlet end of the gas exhaust pipe (4) is connected to a preheating box (16), and the preheating box (16) is fixedly connected to a battery module (17).

3. A catalytic combustion heating device according to claim 2, characterized in that: The battery module (17) is a new energy vehicle battery pack and a solid oxide fuel cell.

4. A catalytic combustion heating device according to claim 1, characterized in that: The port on the other side of the inner cylinder (2) is bent outward and extended to form a cone cylinder (7), and the cone mouth of the cone cylinder (7) protrudes outward to form a gas exhaust pipe (4) that passes through the top of the outer cylinder (1).

5. A catalytic combustion temperature-increasing device according to claim 1, characterized in that: The fuel channel (6) is a spiral channel wound inside the wall of the inner cylinder (2).

6. A catalytic combustion temperature-increasing device according to claim 5, characterized in that: The fuel outlet pipe (62) extends to the center of the gas channel (C).

7. A catalytic combustion temperature-increasing device according to claim 1, characterized in that: The catalyst carrier comprises a first catalyst carrier (8) and a second catalyst carrier (9) which are arranged at intervals, and the first catalyst carrier (8) and the second catalyst carrier (9) are arranged at intervals in the internal cavity of the inner cylinder (2) to form a catalytic reaction channel A.

8. A catalytic combustion temperature-increasing device according to claim 1, characterized in that: The inner surface of the bottom of the outer cylinder (1) is convex outwards to form an arc-shaped guide plate (11); A plurality of evenly distributed gas outlet holes (12) are provided on the wall of the mixing cylinder (3) facing the inner surface of the arc-shaped guide plate (11), and the gas outlet holes (12) are connected to the internal cavity of the inner cylinder (2).

9. A catalytic combustion temperature-increasing device according to claim 1, characterized in that: The outer cylinder (1) is also provided with a temperature detection tube (13) and a pressure detection tube (15), and the temperature detection tube (13) and the pressure detection tube (15) penetrate the outer cylinder (1) and extend into the outer cylinder until they are connected with the gas channel C.

10. A catalytic combustion temperature-increasing device according to claim 1, characterized in that: The outer surface of the outer cylinder (1) is also wrapped with thermal insulation cotton (14).

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