Heating device

Abstract

The present application provides a heating device, including a shell, a gas-liquid mixing chamber is formed inside the shell, a liquid inlet channel for conveying a fluid to be reacted toward the gas-liquid mixing chamber is arranged in the shell, and a catalytic reaction device is arranged on one side of the gas-liquid mixing chamber; a fan is arranged in the shell, and is used to convey air toward the gas-liquid mixing chamber, so that the air and the fluid to be reacted are mixed in the gas-liquid mixing chamber to form a mixture, and the mixture is blown into the catalytic reaction device for catalytic heat release, and the heat of the catalytic heat release is used for heat exchange in the methanol reforming process; at least one electric heating device is arranged in the shell, and is used to preheat the fluid to be reacted and / or the mixture. The heating device provided by the present application heats stably and evenly.

Description

Technical Field

[0001] The present application belongs to the technical field of methanol-to-hydrogen production, and more specifically, relates to a heating device. Background Art

[0002] With the popularization and development of new energy technologies, the development of hydrogen fuel cells is getting faster and faster. Among them, methanol reforming to produce hydrogen as a way of hydrogen production is becoming more and more mature because the equipment required for methanol hydrogen production is small in size and easy to carry.

[0003] In the methanol-to-hydrogen process, high-temperature reforming of methanol is the most critical step in the entire hydrogen production process. This step requires a stable high-temperature environment to allow methanol to stably react with the catalyst to generate hydrogen-rich gas.

[0004] In the related art, the heating of the reforming chamber in the methanol hydrogen production equipment adopts combustion heating or electric heating. In the combustion heating method, the heat source is relatively concentrated, and it is impossible to achieve uniform heating of all parts of the reforming chamber. In addition, there is a situation where the fire source is extinguished during the hydrogen production process, which further leads to uneven heating and affects the purity of hydrogen production. In the electric heating method, due to the need for continuous heating, the stability of the output power of the power equipment is required to be high. When the battery power decreases, it is bound to cause a decrease in power, resulting in uneven heating. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a heating device to solve the technical problem of uneven heating of the heating device in the process of hydrogen production by methanol reforming in the prior art.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a heating device, comprising:

[0007] A shell having a gas-liquid mixing chamber formed therein, a liquid inlet channel for conveying a fluid to be reacted toward the gas-liquid mixing chamber is provided in the shell, and a catalytic reaction device is provided on one side of the gas-liquid mixing chamber;

[0008] a blower, arranged in the housing, for conveying air toward the gas-liquid mixing chamber, so that the air and the fluid to be reacted are mixed in the gas-liquid mixing chamber to form a mixture, and the mixture is blown into the catalytic reaction device for catalytic heat release, and the heat of the catalytic heat release is used for heat exchange in the methanol reforming process;

[0009] At least one electric heating device is disposed on the housing and is used to preheat any one or more of the air, the fluid to be reacted and the mixture.

[0010] Optionally, a gas diverter is further provided in the shell, and the gas diverter is arranged on one side of the gas-liquid mixing chamber and is connected to the air supply channel of the fan; the gas diverter is used to disperse and divert the air.

[0011] Optionally, the gas diverter comprises a conical flow guide head arranged opposite to the air outlet of the fan, and a spoiler structure arranged around the flow guide head.

[0012] Optionally, the gas diverter is made of metal material, and one of the electric heating devices is arranged on the gas diverter to preheat the air flowing through the gas diverter.

[0013] Optionally, the liquid inlet flow channel is arranged around the gas-liquid mixing chamber, and a plurality of liquid outlet holes are arranged at intervals on the liquid inlet flow channel, and the liquid outlet holes are communicated with the gas-liquid mixing chamber.

[0014] Optionally, a preheating channel is further provided in the shell, one end of the preheating channel is connected to an external liquid inlet pipe, and the other end is connected to the liquid inlet channel; one of the electric heating devices is used to preheat the fluid to be reacted in the preheating channel.

[0015] Optionally, the preheating channel includes at least a first channel and a second channel; the first channel is connected to the external liquid inlet pipe, and a plurality of interfering flow columns are arranged at intervals in the axial extension direction of the first channel; and the second channel is arranged in a curved manner.

[0016] Optionally, the preheating channel is arranged on the side wall of the shell, and the electric heating device for heating the preheating channel is arranged on the side wall of the shell.

[0017] Optionally, a guide plate is provided in the shell, and the guide plate is provided on a side of the catalytic reaction device away from the gas-liquid mixing chamber.

[0018] Optionally, at least one temperature sensor is further provided in the housing, and the temperature sensor is used to monitor the temperature in the gas-liquid mixing chamber or in the catalytic reaction.

[0019] The heating device provided in this application has at least the following beneficial effects:

[0020] A catalytic reaction device is arranged in the shell, and a fan blows the mixture in the gas-liquid mixing chamber to the catalytic reaction device for catalytic reaction, thereby releasing a large amount of heat. The released heat can be directly used as a heat source for hydrogen production from methanol. In this process, as long as the supply of air and the fluid to be reacted is continuous and stable, the catalytic reaction can be carried out continuously and stably. Therefore, the temperature of the heat released by the catalytic reaction is also relatively stable, thereby providing a stable and continuous heat source for the methanol reforming reaction, so that uniform heating can be performed during the methanol reforming hydrogen production process.

[0021] An electric heating device is arranged in the shell, which is used to preheat any one or more of the air, the fluid to be reacted or the mixture. In this way, before the fan blows the mixture to the catalytic reaction device, the fluid to be reacted can be preheated and vaporized, so that it can be fully mixed with the air, so that the mixture can be fully contacted with the catalyst in the catalytic reaction device to improve the catalytic efficiency, so that the catalytic exothermic reaction can be fully carried out. At the same time, the mixture can be quickly heated to the temperature conditions required for the catalytic reaction under the preheating of the electric heating device, so that the catalytic reaction can reach the optimal reaction temperature at the beginning, and keep the heat release stable throughout the reaction process, which is conducive to further improving the uniformity of heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A three-dimensional diagram of a heating device in some embodiments of the present application;

[0024] Figure 2 This is an exploded view of a heating device in some embodiments of the present application;

[0025] Figure 3 It is a cross-sectional view of a heating device in some other embodiments of the present application;

[0026] Figure 4 A three-dimensional diagram of a gas flow divider in some embodiments of the present application;

[0027] Figure 5 A three-dimensional diagram of a gas flow divider from another perspective in some embodiments of the present application;

[0028] Figure 6 This is a three-dimensional diagram of the housing in some embodiments of the present application.

[0029] Among them, the reference numerals in the figure are:

[0030] 100. Shell;

[0031] 110, gas-liquid mixing chamber; 111, first flow channel; 1111, spoiler column; 112, second flow channel; 120, guide plate;

[0032] 200, liquid inlet channel;

[0033] 300. Catalytic reaction device;

[0034] 400, fan;

[0035] 500. Electric heating device;

[0036] 600, gas flow dividing member; 610, flow guide head; 620, flow baffle; 630, flow dividing sheet;

[0037] 700. Temperature sensor. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] Please also read Figures 1 to 6, the heating device provided in the embodiment of the present application is now described.

[0043] It should be understood that the so-called fluid to be reacted in the present application may be a methanol solution. In the following description, the fluid to be reacted is taken as a methanol solution as an example.

[0044] It should be understood that in the heating device of the present application, the reaction formula of the methanol solution is:

[0045] 2CH3OH+3O2----2CO2+4H2O, the reaction conditions are copper-zinc catalyst environment.

[0046] refer to Figures 1 to 3 The heating device includes a shell 100, a liquid inlet channel 200, a fan 400, a catalytic reaction device 300 and at least one electric heating device 500 arranged on the shell 100.

[0047] refer to Figure 2 and Figure 3 Specifically, the housing 100 is hollow with two ends connected. The fan 400 is disposed at an opening at one end of the housing 100, and the catalytic reaction device 300 can be disposed in the hollow interior of the housing 100, or can be disposed at the other end of the opening of the housing 100, and the specific embodiment is not limited thereto. A gas-liquid mixing chamber 110 is formed in the hollow interior of the housing 100 and between the fan 400 and the catalytic reaction device 300. At the same time, a liquid inlet channel 200 is disposed on the housing 100. The liquid inlet channel 200 is used to transport methanol solution to the gas-liquid mixing chamber 110, so that the methanol solution and the air blown by the fan 400 are mixed in the gas-liquid mixing chamber 110 to form a mixture.

[0048] It should be understood that the liquid inlet channel 200 is connected to the external liquid inlet pipe, and at the same time, a liquid outlet hole is provided on the liquid inlet channel 200, and the liquid outlet hole is used to transport the methanol solution toward the gas-liquid mixing chamber 110. In some possible embodiments, the external liquid inlet pipe transports the high-pressure methanol solution toward the liquid inlet channel 200, so that the methanol solution transported to the gas-liquid mixing chamber 110 is in a mist form, so that the methanol solution and the air can be fully mixed in the gas-liquid mixing chamber 110, so that the mixture can fully contact and react with the catalyst in the catalytic reaction device 300 and release heat, and the heat released by the catalytic heat is used for heat exchange in the methanol reforming process.

[0049] It can be understood that the catalytic reaction device 300 is a honeycomb catalyst containing a copper-zinc catalyst, and the catalytic reaction device 300 is arranged on one side of the gas-liquid mixing chamber 110. Furthermore, the axis of the air supply channel of the fan 400, the axis of the gas-liquid mixing chamber 110, and the axis of the catalytic reaction device 300 all coincide. In this way, after the fan 400 pumps air into the gas-liquid mixing chamber 110 to fully mix with the methanol solution, the mixture can be blown into the catalytic reaction device 300 for catalytic exothermic reaction.

[0050] Furthermore, in order to accelerate the reaction rate of the mixture and the honeycomb catalyst, and to enable the mixture to quickly reach the temperature required for the reaction, an electric heating device 500 is provided in the housing 100. The electric heating device 500 is used to preheat one or more of the air, the methanol solution, and the mixture, so that the mixture quickly reaches the temperature required for the catalytic reaction. For example, the electric heating device 500 can be arranged on the air supply channel of the fan 400 to heat the air pumped by the fan 400; the electric heating device 500 can also be arranged in the gas-liquid mixing chamber 110 to heat the mixture; or, the electric heating device 500 can also be arranged in the liquid inlet channel 200 to preheat the methanol solution in the liquid inlet channel 200.

[0051] Thus, by setting the electric heating device 500, whether it is heating the air, methanol solution or mixture, at least the following advantages are possessed: first, the methanol solution can be heated and vaporized before entering the honeycomb catalyst, which can reduce the particle size of the liquid in the mixture, and can also quickly heat the mixture to the required temperature conditions for the catalytic reaction, and improve the reaction activity of the catalyst. After the mixture is blown into the honeycomb catalyst, it can fully react with the honeycomb catalyst and improve the reaction rate of the mixture with the honeycomb catalyst; second, at the beginning of the catalytic reaction, the mixture can reach the optimal temperature conditions required for the reaction, so that the entire catalytic reaction process can maintain heat release stability, and the phenomenon of gradually increasing heat release temperature will not occur during the entire heating process, which is conducive to further improving the uniformity of heating.

[0052] It can be understood that the electric heating device 500 can be an electric heating rod.

[0053] It should be understood that, when in use, the opening at one end of the housing 100 away from the blower 400 is connected to the methanol reforming device, so that the heat generated by the catalytic reaction can be transferred to the reforming device, thereby providing a stable heat source for methanol reforming.

[0054] The heating device is configured in this way. Compared with conventional designs that only use combustion heating or only use electric heating, the heating device of the present application generates heat evenly and stably. Compared with only using electric heating, the heating device not only generates heat stably, but also consumes less energy. Therefore, the heating device of the present application can provide a stable heat source for the methanol reforming reaction, thereby improving the efficiency of methanol reforming.

[0055] Generally speaking, when the fan 400 blows air into the gas-liquid mixing chamber 110 , the air flows into the gas-liquid mixing chamber 110 in the form of a single airflow. Therefore, during the process of mixing the air with the methanol solution, uneven mixing is very likely to occur.

[0056] To solve this problem, refer to Figure 2 and Figure 3 In some embodiments of the present application, a gas diverter 600 is further provided in the housing 100, and the gas diverter 600 is provided on one side of the gas-liquid mixing chamber 110 and is connected to the air supply channel of the fan 400. More specifically, the gas diverter 600 is clamped in the hollow interior of the housing 100 and is located at the side opening of the housing 100, and a sealing plate is provided on the side of the gas diverter 600 facing the opening of the housing 100.

[0057] By setting the gas diverter 600 and changing the flow direction of the air, the air flows into the gas-liquid mixing chamber 110 in a scattered direction. In the gas-liquid mixing chamber 110, the scattered air flow is fully mixed with the methanol solution and then blown by the fan 400 into the honeycomb catalyst for catalytic exothermic reaction.

[0058] Specifically, refer to Figure 4 The gas flow divider 600 includes a conical flow guide head 610 which is arranged directly opposite to the air outlet of the fan 400. Specifically, the bottom diameter of the flow guide head 610 is greater than or equal to the air outlet diameter of the fan 400, and the top of the flow guide head 610 is located on the axis of the air outlet of the fan 400. In this way, when the air blown by the fan 400 flows to the flow guide head 610, the air diffuses under the guiding effect of the flow guide head 610, thereby increasing the contact area between the air and the methanol solution in the gas-liquid mixing chamber 110, so that the two are fully mixed.

[0059] It is understandable that a plurality of guide grooves may be provided on the side wall of the guide head 610 along the axial direction to further enhance the guide effect; of course, the guide grooves may also be other structures with guide function, and are not limited thereto.

[0060] For further reference, Figure 4 and Figure 5, the gas flow splitter 600 also includes a spoiler structure arranged around the flow guide head 610. Specifically, the spoiler structure includes a baffle plate 620 arranged at the bottom of the flow guide head 610, and a flow splitter plate 630 arranged around the flow guide head 610 and arranged in a divergent shape. Among them, the diameter of the baffle plate 620 is larger than the diameter of the flow guide head 610 and smaller than the inner diameter of the shell 100, that is, an annular channel for air to flow into the gas-liquid mixing chamber 110 is formed in the gas flow splitter 600; at the same time, each flow splitter plate 630 is extended from the side wall of the gas flow splitter 600 toward the flow guide head 610 but is not connected to each other, and the end of each flow splitter plate 630 is connected to the baffle plate 620.

[0061] In this way, when the air blown by the fan 400 is guided by the guide head 610 and collides with the side walls of each diverter plate 630, the air flow after the collision changes its flow direction and collides with the sealing plate, and then changes its flow direction again to collide with the baffle plate 620. In this process, the air blown continuously by the fan 400 is mixed with the air that changes its flow direction multiple times in the gas diverter 600, and finally flows into the gas-liquid mixing chamber 110 from the annular channel. At this time, the air flowing into the gas-liquid mixing chamber 110 has been fully dispersed and diverted, thereby increasing the contact area between the air and the methanol solution to ensure that the two can be fully mixed.

[0062] It is understandable that, in order to facilitate the heating of the air and further accelerate the heating rate of the mixture so as to quickly reach the temperature required for the catalytic reaction, the gas diverter 600 can be arranged in the following manner. That is, the gas diverter 600 is made of metal material, for example, aluminum alloy; Figures 1 to 3 , an electric heating device 500 (i.e., an electric heating rod) is buried in the gas diverter 600. Since aluminum alloy has good thermal conductivity, when the electric heating device 500 is powered on and heated, the heat generated by it can be transferred to the gas diverter 600, thereby causing the gas diverter 600 to heat up synchronously. In this way, when air flows through the gas diverter 600, the heat on the gas diverter 600 is transferred to the air, thereby causing the air to have a higher initial temperature.

[0063] Understandably, reference Figure 2 and Figure 3 The liquid inlet channel 200 is arranged around the gas-liquid mixing chamber 110, and a plurality of liquid outlet holes are arranged at intervals on the liquid inlet channel 200, and the liquid outlet holes are connected to the gas-liquid mixing chamber 110. In this way, when the methanol solution is transported to the gas-liquid mixing chamber 110, the methanol solution can be evenly sprayed in the gas-liquid mixing chamber 110, so as to be fully mixed with the air.

[0064] Furthermore, in order to allow the methanol solution to be fully heated and vaporized before entering the honeycomb catalyst to increase the catalytic reaction rate, the housing 100 is improved as follows.

[0065] A preheating channel is also provided in the shell 100, one end of the preheating channel is connected to the external liquid inlet pipe, and the other end is connected to the liquid inlet channel 200; and an electric heating device 500 is used to preheat the methanol solution in the preheating channel to vaporize the methanol solution.

[0066] After the methanol solution is heated and vaporized in the preheating flow channel, the methanol solution is in a mist form, so that it can be fully mixed with the air after entering the gas-liquid mixing chamber 110. Compared with preheating only the air, the air transfers heat to the methanol, which can further increase the temperature and mixing uniformity of the air and methanol solution, thereby providing favorable conditions for the catalytic reaction.

[0067] Further, it is understandable that reference Figure 2 The preheating channel is arranged on the side wall of the shell 100 , and the electric heating device 500 for heating the preheating channel is arranged on the side wall of the shell 100 .

[0068] The preheating channel is arranged on the side wall of the shell 100, that is, the two are formed in one piece, so that the integration degree of the shell 100 can be improved, thereby reducing the volume of the shell 100, which is conducive to the lightweight heating device, good portability, and a wide range of use scenarios. Furthermore, the shell 100 can be made of a metal material such as an aluminum alloy. Since the electric heating device 500 is arranged on the side wall of the shell 100, when the electric heating device 500 is started, it can not only efficiently heat the preheating channel in the side wall of the shell 100, but also transfer heat to the inside of the shell 100, thereby also heating the gas-liquid mixing chamber 110 and the honeycomb catalyst to further increase the catalytic reaction rate.

[0069] Furthermore, regarding the setting of the preheating flow channel, the following setting methods may be adopted.

[0070] refer to Figure 2 The preheating channel at least includes a first channel 111 and a second channel 112; the first channel 111 is connected to an external liquid inlet pipe, and a plurality of interfering flow columns 1111 are arranged at intervals in the axial extension direction of the first channel 111; the second channel 112 is arranged in a curved manner.

[0071] By arranging the spoiler column 1111 in the axial extension direction of the first flow channel 111, when the methanol solution flows into the first flow channel 111 from the external liquid inlet pipe, the flow direction of the methanol solution is disrupted to form a turbulent flow under the disturbing effect of the spoiler column 1111, so that the methanol solution can fill the first flow channel 111. Furthermore, a plurality of spoiler columns 1111 are arranged at intervals, so that the disturbing effect on the methanol solution can be further improved.

[0072] The second flow channel 112 is arranged behind the first flow channel 111, and the second flow channel 112 is arranged in a curved manner, so that the space of the side wall of the housing 100 can be fully utilized to extend the length of the second flow channel 112 as much as possible. Since one of the electric heating devices 500 is arranged in the housing 100, the second flow channel 112 is arranged in this way, and the methanol solution can completely fill the second flow channel 112 after being fully dispersed and disturbed by the first flow channel 111, so that the heat on the side wall of the housing 100 can be fully transferred to the methanol solution to heat it, thereby improving the heating efficiency and making the methanol solution fully vaporized.

[0073] Understandably, reference Figure 6 In some embodiments of the present application, a guide plate 120 is disposed in the shell 100 , and the guide plate 120 is disposed on a side of the catalytic reaction device 300 away from the gas-liquid mixing chamber 110 .

[0074] Specifically, each guide plate 120 is arranged in the hollow interior of the shell 100 parallel to the air supply direction of the fan 400, so that the high-temperature gas formed by the catalytic reaction in the honeycomb catalyst can be discharged from the hollow interior of the shell 100 in an orderly manner under the blowing of the fan 400. Further, each guide plate 120 is also made of metal material, so that when the electric heating device 500 heats the shell 100, the heat on the side wall of the shell 100 can be transferred to the guide plate 120. When the high-temperature gas flows through the guide plate 120, if the temperature on the guide plate 120 is greater than the temperature of the high-temperature gas, the guide plate 120 plays a role in supplementary heating of the high-temperature gas. Furthermore, one of the electric heating devices 500 is also arranged on the guide plate 120. By so arranging, the electric heating device 500 heats the guide plate 120, so that the high-temperature gas can provide a stable heat source for methanol reforming, which is conducive to improving the reaction efficiency of methanol reforming.

[0075] Understandably, reference Figure 2 and Figure 3 In some embodiments of the present application, at least one temperature sensor 700 is further provided in the housing 100, and the temperature sensor 700 is used to monitor the temperature in the gas-liquid mixing chamber 110 or in the catalytic reaction.

[0076] At least two temperature sensors 700 are provided, which are used to monitor the initial temperature of the air and the methanol solution before the catalytic reaction. Specifically, one temperature sensor 700 is inserted on the gas diverter 600, and the other temperature sensor 700 is provided in the side wall of the housing 100 where the preheating channel is provided. In this way, by monitoring the initial temperature of the methanol solution and the air, the initial temperature of the air and the methanol solution can be finely adjusted during the reaction process, which is conducive to making the mixture fully and completely react with the honeycomb catalyst, thereby helping to improve the heat release efficiency of the reaction.

[0077] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A heating device, characterized in that: include: A shell having a gas-liquid mixing chamber formed therein, a liquid inlet channel for conveying a fluid to be reacted toward the gas-liquid mixing chamber is provided in the shell, and a catalytic reaction device is provided on one side of the gas-liquid mixing chamber; a blower, arranged in the housing, for conveying air toward the gas-liquid mixing chamber, so that the air and the fluid to be reacted are mixed in the gas-liquid mixing chamber to form a mixture, and the mixture is blown into the catalytic reaction device for catalytic heat release, and the heat of the catalytic heat release is used for heat exchange in the methanol reforming process; at least one electric heating device, disposed on the housing, for preheating the fluid to be reacted and / or the mixture; A preheating channel is also provided in the shell, one end of the preheating channel is connected to the external liquid inlet pipe, and the other end is connected to the liquid inlet channel; wherein the electric heating device is used to preheat the fluid to be reacted in the preheating channel; The preheating flow channel at least includes a first flow channel and a second flow channel; the first flow channel is connected to the external liquid inlet pipe, and a plurality of interfering flow columns are arranged at intervals in the extending direction of the axis of the first flow channel; the second flow channel is arranged behind the first flow channel, and the second flow channel is arranged in a curved manner; The preheating channel is arranged on the side wall of the shell, and the electric heating device for heating the preheating channel is arranged on the side wall of the shell.

2. The heating device according to claim 1, characterized in that: A gas diverter is also provided in the shell, and the gas diverter is provided at one side of the gas-liquid mixing chamber and is connected with the air supply channel of the fan; the gas diverter is used to divert the air.

3. The heating device according to claim 2, characterized in that: The gas flow splitter comprises a conical flow guide head arranged opposite to the air outlet of the fan, and a flow spoiler structure arranged around the flow guide head.

4. The heating device according to claim 2 or 3, characterized in that: The gas flow divider is made of metal material, and one of the electric heating devices is arranged on the gas flow divider to preheat the air flowing through the gas flow divider.

5. The heating device according to claim 1, characterized in that: The liquid inlet flow channel is arranged around the gas-liquid mixing chamber, and a plurality of liquid outlet holes are arranged at intervals on the liquid inlet flow channel, and the liquid outlet holes are communicated with the gas-liquid mixing chamber.

6. The heating device according to claim 1, characterized in that: A guide plate is arranged in the shell, and the guide plate is arranged on a side of the catalytic reaction device away from the gas-liquid mixing chamber.

7. The heating device according to claim 1, characterized in that: At least one temperature sensor is also arranged in the shell, and the temperature sensor is used to monitor the temperature in the gas-liquid mixing chamber or the catalytic reaction.

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