Hydrogen catalytic combustion device and heat supply system

Abstract

The utility model relates to a hydrogen catalytic combustion device and a heat supply system.The hydrogen catalytic combustion device comprises a hydrogen source, an air source, a first catalytic combustion branch and at least one second catalytic combustion branch, and the first catalytic combustion branch and the second catalytic combustion branch are connected in series; the first catalytic combustion branch and the second catalytic combustion branch are each provided with a catalytic combustion assembly, the air source is connected to the first catalytic combustion branch and used for introducing air towards the first catalytic combustion branch, and the hydrogen source is connected to the first catalytic combustion branch and the second catalytic combustion branch and used for introducing air towards the second catalytic combustion branch. And the hydrogen feeding device is used for feeding hydrogen into the first catalytic combustion branch and the second catalytic combustion branch. According to the hydrogen catalytic combustion device, through multiple catalytic combustion reactions, the heat energy quality is improved, the heat supply efficiency and the energy utilization rate of the hydrogen catalytic combustion device are improved, hydrogen is supplied through the hydrogen source, and the heat supply requirements in different use scenes can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy, in particular to a hydrogen catalytic combustion device and a heat supply system. BACKGROUND

[0002] The field of heat supply has always been an important field of energy consumption. Whether it is heating for residential life, heating demand in industrial production process or heating demand in commercial places, a large amount of energy is needed. Traditional heat supply methods, such as heat supply systems using coal, natural gas and the like as fuel, although meet the heating demand to some extent, are accompanied by significant environmental problems and energy sustainability challenges. Among numerous new energies, hydrogen has received extensive attention due to its unique properties.

[0003] As a new heat supply technology, hydrogen energy heat supply, on the one hand, hydrogen can be obtained through various ways, including water electrolysis, fossil fuel reforming and the like, and with the reduction of renewable energy power generation cost, the scale of hydrogen production by water electrolysis using renewable energy is gradually expanded, providing a sustainable fuel source for hydrogen heat supply; on the other hand, hydrogen heat supply technology can realize efficient energy conversion. Under suitable combustion or reaction conditions, hydrogen can release a large amount of heat to meet the heat supply demand. However, the existing hydrogen energy heat supply system has low heat supply efficiency and energy utilization rate, and the heat source of the hydrogen energy heat supply system is mainly from the waste heat of power plant equipment, which needs to be used in scenarios with infrastructure, resulting in great limitation in the use of remote areas, islands, deserts and the like. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a hydrogen catalytic combustion device and a heat supply system in view of the problems of low heat supply efficiency and energy utilization rate of the existing hydrogen energy heat supply system and great limitation in use.

[0005] A hydrogen catalytic combustion device, comprising:

[0006] a hydrogen source and an air source;

[0007] a first catalytic combustion branch and at least one second catalytic combustion branch, the first catalytic combustion branch and the second catalytic combustion branch are connected in series, the first catalytic combustion branch and the second catalytic combustion branch are both provided with a catalytic combustion assembly, the air source is connected to the first catalytic combustion branch for introducing air towards the first catalytic combustion branch, and the hydrogen source is connected to the first catalytic combustion branch and the second catalytic combustion branch for introducing hydrogen towards the first catalytic combustion branch and the second catalytic combustion branch.

[0008] In one of the embodiments, the catalytic combustion assembly comprises a mixing module and a hydrogen removal module, the mixing module is connected with the hydrogen source and the air source at the gas inlet end, and the mixing module is connected with the hydrogen removal module at the gas outlet end.

[0009] In one of the embodiments, the catalytic combustion assembly further comprises a pressure sensor and a concentration sensor, the pressure sensor and the concentration sensor are arranged between the mixing module and the hydrogen removal module.

[0010] In one of the embodiments, the hydrogen catalytic combustion device further comprises a flame arrester, the flame arrester is arranged at one end close to the catalytic combustion assembly.

[0011] In one of the embodiments, the hydrogen catalytic combustion device further comprises a heat exchanger and a first temperature sensor, the heat exchanger is connected with the air source at the gas inlet end, the heat exchanger is connected with the first catalytic combustion branch at the gas outlet end, and the first temperature sensor is arranged between the heat exchanger and the first catalytic combustion branch.

[0012] In one of the embodiments, a first control valve is arranged between the hydrogen source and the first catalytic combustion branch, the first control valve is used to control the hydrogen flow rate of the hydrogen source into the first catalytic combustion branch.

[0013] A second control valve is arranged between the hydrogen source and the second catalytic combustion branch, the second control valve is used to control the hydrogen flow rate of the hydrogen source into the second catalytic combustion branch.

[0014] In one of the embodiments, the second catalytic combustion branch has multiple branches, the multiple branches of the second catalytic combustion branch are connected in series, and the gas inlet end of one of the second catalytic combustion branches is connected in series with the gas outlet end of the first catalytic combustion branch.

[0015] A heat supply system, the heat supply system comprises:

[0016] The hydrogen catalytic combustion device according to any one of the above technical solutions; and

[0017] An absorption heat pump connected with the heat supply end of the hydrogen catalytic combustion device.

[0018] In one of the embodiments, the absorption heat pump comprises an evaporator, an absorber, a generator and a condenser.

[0019] The hydrogen catalytic combustion device is connected with the air source, and the condenser is connected with the evaporator and the secondary network water outlet.

[0020] In one of the embodiments, a second temperature sensing element is arranged between the air inlet end of the evaporator and the heat supply end of the hydrogen catalytic combustion device, and a third temperature sensing element is arranged at the air outlet end of the generator, and the third temperature sensing element is used to detect the temperature of the gas flowing out of the air outlet end of the generator.

[0021] The hydrogen catalytic combustion device and the heat supply system, the air source is connected with the air source, and the condenser is connected with the evaporator and the secondary network water outlet. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure diagram of the heat supply system provided in some embodiments.

[0023] Figure 2 The structure diagram of the heat supply system provided in some embodiments.

[0024] Figure 3 The structure diagram of the hydrogen catalytic combustion device provided in some embodiments.

[0025] Reference signs:

[0026] 100, hydrogen catalytic combustion device;

[0027] 110, hydrogen source; 111, first control valve; 112, second control valve; 120, air source; 130, first catalytic combustion branch; 140, second catalytic combustion branch; 150, catalytic combustion assembly; 151, gas mixing module; 152, hydrogen removal module; 153, pressure sensing element; 154, concentration sensing element; 160, flame arrester; 170, heat exchanger; 180, first temperature sensing element;

[0028] 200, heating system;

[0029] 210, absorption heat pump; 211, evaporator; 212, absorber; 213, generator; 214, condenser; 220, secondary network water inlet; 230, secondary network water outlet; 240, exhaust port; 250, second temperature sensing element; 260, third temperature sensing element. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and that the present application is therefore not limited to the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0033] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In this application, unless otherwise explicitly specified and limited, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0035] It should be noted that if an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0036] The technical solutions provided by the embodiments of the present application will be described below with reference to the accompanying drawings.

[0037] Referring to Figures 1-3 As shown in the drawings, the present application provides a hydrogen catalytic combustion device 100, which includes a hydrogen source 110, an air source 120, a first catalytic combustion branch 130 and at least one second catalytic combustion branch 140. The hydrogen catalytic combustion device 100 mixes hydrogen provided by the hydrogen source 110 and oxygen provided by the air source 120 to carry out hydrogen-oxygen reaction to release heat, and converts the heat generated by the hydrogen catalytic combustion device 100 into the secondary network through the absorption heat pump 210, so as to realize portable heating of green and clean energy.

[0038] The first catalytic combustion branch 130 is connected in series with the second catalytic combustion branch 140. For example, when the second catalytic combustion branch 140 is only one, the outlet of the first catalytic combustion branch 130 is connected to the inlet of the second catalytic combustion branch 140. For another example, when the second catalytic combustion branch 140 is multiple, the multiple second catalytic combustion branches 140 are connected in series, and the inlet of one of the second catalytic combustion branches 140 is connected to the outlet of the first catalytic combustion branch 130. The first catalytic combustion branch 130 and the second catalytic combustion branch 140 are both provided with a catalytic combustion assembly 150. The air source 120 is connected to the first catalytic combustion branch 130, and is used to introduce air into the first catalytic combustion branch 130. For example, the air source 120 is a high-pressure fan, and the outlet of the air source 120 is connected to the inlet of the first catalytic combustion branch 130. The hydrogen source 110 is connected to the first catalytic combustion branch 130 and the second catalytic combustion branch 140, and is used to introduce hydrogen into the first catalytic combustion branch 130 and the second catalytic combustion branch 140. For example, the hydrogen source 110 can be modularly supplied by a hydrogen storage container, or can be supplied by a hydrogen pipeline network. The outlet of the hydrogen source 110 is connected to the inlet of the first catalytic combustion branch 130 and the second catalytic combustion branch 140.

[0039] In the hydrogen catalytic combustion device 100, the air source 120 introduces air into the first catalytic combustion branch 130, and the hydrogen source 110 introduces hydrogen into the first catalytic combustion branch 130. Oxygen in the air and hydrogen are mixed in the first catalytic combustion branch 130, and then are catalytically combusted by the catalytic combustion assembly 150 to generate heat. The hydrogen introduced by the hydrogen source 110 into the second catalytic combustion branch 140 is mixed with the mixed gas flowing from the first catalytic combustion branch 130 into the second catalytic combustion branch 140, and then is catalytically combusted by the catalytic combustion assembly 150 of the second catalytic combustion branch 140 to generate heat, so as to further improve the heat supply of the hydrogen catalytic combustion device 100. In this way, through multiple catalytic combustion reactions, the quality of heat energy is improved, the heat supply efficiency and energy utilization rate of the hydrogen catalytic combustion device 100 are improved, and the hydrogen source 110 can supply hydrogen to meet the heat supply demand in different use scenarios, especially in remote areas, islands, deserts and other areas. Since hydrogen and oxygen in the air react to generate only water vapor, portable heat supply of green clean energy can be realized.

[0040] In an embodiment, referring to Figure 1 and Figure 2As shown, the catalytic combustion assembly 150 comprises a gas mixing module 151 and a hydrogen consumption module 152. The gas mixing module 151 is connected to the hydrogen source 110 and the air source 120. For example, the gas mixing module 151 of the first catalytic combustion branch 130 mixes the hydrogen gas from the hydrogen source 110 with the air from the air source 120. The gas mixing module 151 of the second catalytic combustion branch 140 mixes the mixed gas from the first catalytic combustion branch 130 with the hydrogen gas from the hydrogen source 110. The gas mixing module 151 is connected to the hydrogen consumption module 152. The mixed gas is combusted in the hydrogen consumption module 152 to release a large amount of heat, which is used to heat the secondary network. The hydrogen consumption module 152 can consume the hydrogen in the mixed gas, thereby saving energy and reducing carbon emissions. The catalytic combustion reaction of hydrogen and air is completed in the hydrogen consumption module 152, and no open flame is generated, thereby improving the safety of the hydrogen catalytic combustion device 100.

[0041] Further, referring to Figure 1 and Figure 2 As shown, the catalytic combustion assembly 150 further comprises a pressure sensing element 153 and a concentration sensing element 154. The pressure sensing element 153 and the concentration sensing element 154 are arranged between the gas mixing module 151 and the hydrogen consumption module 152. In this way, the pressure sensing element 153 can detect the pressure of the mixed gas entering the hydrogen consumption module 152, so as to monitor and control the pressure of the mixed gas entering the hydrogen consumption module 152 in real time. The concentration sensing element 154 can detect the hydrogen concentration in the mixed gas entering the hydrogen consumption module 152, so as to monitor and control the hydrogen concentration in the mixed gas entering the hydrogen consumption module 152 in real time. This can prevent the mixed gas from exploding due to excessive pressure or excessive hydrogen concentration.

[0042] In an embodiment, referring to Figure 1 and Figure 2 As shown, the hydrogen catalytic combustion device 100 further comprises a flame arrester 160 arranged near one end of the catalytic combustion assembly 150. Since hydrogen and oxygen in the air can be ignited during the catalytic combustion reaction, the flame arrester 160 is arranged near one end of the catalytic combustion assembly 150 to prevent the gas flame generated during the catalytic combustion reaction from spreading to the entire primary network pipeline, thereby preventing backfire accidents. Preferably, the flame arrester 160 is arranged near the hydrogen consumption module 152. Since the catalytic combustion reaction of hydrogen and oxygen occurs in the hydrogen consumption module 152, the flame arrester 160 is arranged near the hydrogen consumption module 152 to timely feedback and block the gas flame generated during the catalytic combustion reaction in the hydrogen consumption module 152.

[0043] In an embodiment, referring to Figure 1 andFigure 2 As shown, the hydrogen catalytic combustion device 100 further comprises a heat exchanger 170 and a first temperature sensor 180. The air inlet end of the heat exchanger 170 is connected to the air source 120, the air outlet end of the heat exchanger 170 is connected to the first catalytic combustion branch 130, and the first temperature sensor 180 is arranged between the heat exchanger 170 and the first catalytic combustion branch 130. In this way, the air entering the first catalytic combustion branch 130 can be preheated by the heat exchanger 170, which can realize the rapid cold start of the hydrogen catalytic combustion device 100, and preheat the air before catalytic combustion, which can utilize the low-grade heat energy of the absorption heat pump 210 flowing to the hydrogen catalytic combustion device 100, improve the heating efficiency and energy utilization rate of the hydrogen catalytic combustion device 100, further improve the gas temperature at the gas outlet of the hydrogen catalytic combustion device 100, and improve the heat energy quality. Moreover, the first temperature sensor 180 can detect the temperature of the air entering the first catalytic combustion branch 130 from the air source 120, so as to control the temperature of the air entering the first catalytic combustion branch 130 within a preset temperature range, and further control the subsequent catalytic combustion reaction process of hydrogen and oxygen. As in the present embodiment, in order to ensure that the catalytic combustion reaction can meet the heating demand, the temperature of the heated air entering the first catalytic combustion branch 130 is 40-45°C, that is, the temperature detected by the first temperature sensor 180 is 40-45°C.

[0044] In an embodiment, referring to Figure 1 and Figure 2 As shown, a first control valve 111 is arranged between the hydrogen source 110 and the first catalytic combustion branch 130, and the first control valve 111 is used to control the flow of hydrogen from the hydrogen source 110 into the first catalytic combustion branch 130. As in the present embodiment, by controlling the opening and closing ratio of the first control valve 111, the first control valve 111 controls the hydrogen concentration in the mixed gas entering the first catalytic combustion branch 130 to be less than 4%, which can not only avoid the explosion phenomenon in the catalytic combustion process of the mixed gas, but also make the mixed gas generate more heat after the catalytic combustion reaction, improve the heating efficiency of the hydrogen catalytic combustion device 100, and meet the heating demand of the secondary network. Similarly, a second control valve 112 is arranged between the hydrogen source 110 and the second catalytic combustion branch 140, and the second control valve 112 is used to control the flow of hydrogen from the hydrogen source 110 into the second catalytic combustion branch 140. As in the present embodiment, by controlling the opening and closing ratio of the first control valve 112, the second control valve 112 controls the hydrogen concentration in the mixed gas entering the second catalytic combustion branch 140 to be less than 4%, which can not only avoid the explosion phenomenon in the catalytic combustion process of the mixed gas, but also make the mixed gas generate more heat after the catalytic combustion reaction, improve the heating efficiency of the hydrogen catalytic combustion device 100, and meet the heating demand of the secondary network.

[0045] The hydrogen catalytic combustion device 100 controls the hydrogen concentration entering the first catalytic combustion branch 130 and the second catalytic combustion branch 140 through the first control valve 111 and the second control valve 112 respectively, which can avoid the explosion phenomenon in the catalytic combustion process of the mixed gas, and can avoid the problem of low heat release under the condition of low-concentration hydrogen, and improve the heat supply efficiency of the hydrogen catalytic combustion device 100. In this embodiment, the temperature of the heat supply end of the second catalytic combustion branch 140 can be increased to more than 450℃ after multiple catalytic combustion reactions, which reduces the working difficulty of the subsequent absorption heat pump 210 and improves the heat energy quality.

[0046] In an embodiment, the hydrogen catalytic combustion device 100 is connected to the hydrogen storage device 1000, and the hydrogen storage device 1000 is connected to the hydrogen production device 1000. Figure 1 As shown in FIG. 1, the hydrogen catalytic combustion device 100 includes a first catalytic combustion branch 130 and a second catalytic combustion branch 140. Figure 2 As shown in FIG. 1, the second catalytic combustion branch 140 has multiple second catalytic combustion branches 140, and the gas inlet end of one of the second catalytic combustion branches 140 is connected to the gas outlet end of the first catalytic combustion branch 130. In this way, heat is generated by the first catalytic combustion branch 130, and more heat is released after the second catalytic combustion branch 140 is heated twice, which can avoid the problem of low heat release under the condition of low-concentration hydrogen, and can meet the heat supply demand of the secondary network to a greater extent.

[0047] It should be noted that when the heat supply demand of the secondary network is low, the second catalytic combustion branch 140 can be set to be less, so as to simplify the structure of the hydrogen catalytic combustion device 100 and reduce the use cost of the hydrogen catalytic combustion device 100. Of course, when the heat supply demand of the secondary network is high, the second catalytic combustion branch 140 can be set to be more, so as to meet the heat supply demand of the secondary network.

[0048] In addition, as shown in FIG. 1, the hydrogen catalytic combustion device 100 further includes a third catalytic combustion branch 150. Figure 1 As shown in FIG. 1, the second catalytic combustion branch 140 has multiple second catalytic combustion branches 140, and the gas inlet end of one of the second catalytic combustion branches 140 is connected to the gas outlet end of the first catalytic combustion branch 130. In this way, heat is generated by the first catalytic combustion branch 130, and more heat is released after the second catalytic combustion branch 140 is heated twice, which can avoid the problem of low heat release under the condition of low-concentration hydrogen, and can meet the heat supply demand of the secondary network to a greater extent. Figure 3 As shown in FIG. 1, the hydrogen catalytic combustion device 100 further includes a third catalytic combustion branch 150.

[0049] The heat supply system 200 described above, the absorption heat pump 210 can convert the heat generated by the hydrogen catalytic combustion device 100 to the secondary network water supply, realize the heat supply purpose of the hydrogen catalytic combustion device 100, through multiple catalytic combustion reactions, improve the heat quality, improve the heat supply efficiency and energy utilization rate of the hydrogen catalytic combustion device 100, and through the hydrogen source 110 supplying hydrogen, it can meet the heat supply demand in different use scenarios (especially in remote areas, islands, deserts and other areas), because hydrogen and oxygen in the air can only generate water vapor after hydrogen-oxygen reaction, it can realize portable heat supply of green clean energy.

[0050] In an embodiment, referring to Figure 1 and Figure 2 shown, the absorption heat pump 210 includes an evaporator 211, an absorber 212, a generator 213 and a condenser 214. The heat supply end of the hydrogen catalytic combustion device 100 is connected to the air inlet end of the evaporator 211, the evaporator 211 is connected to the absorber 212 and the generator 213, the absorber 212 is connected to the generator 213, the absorber 212 is connected to the condenser 214 and the secondary network water inlet 220, the generator 213 is connected to the air source 120 and the condenser 214, and the condenser 214 is connected to the evaporator 211 and the secondary network water outlet 230.

[0051] Specifically, referring to Figure 1 and Figure 2 shown, when the absorption heat pump 210 needs to convert the heat generated by the hydrogen catalytic combustion device 100 to the secondary network water supply, the hot gas in the hydrogen catalytic combustion device 100 enters the evaporator 211 through the heat supply end, the water solution inside the evaporator 211 is heated and evaporated, the water vapor formed inside the evaporator 211 enters the absorber 212, the high-temperature hot gas inside the evaporator 211 enters the generator 213, the secondary network water inlet 220 introduces cold water into the absorber 212, the water vapor entering the absorber 212 is liquefied and diluted after being cooled, and the lithium bromide concentrated solution in the absorber 212 is diluted and becomes a lithium bromide dilute solution and releases a large amount of heat, which heats the secondary network water flowing into the condenser 214 in the absorber 212, the lithium bromide dilute solution enters the generator 213, the high-temperature hot gas in the generator 213 heats and evaporates the water vapor in the lithium bromide dilute solution, the lithium bromide dilute solution in the generator 213 is converted into a lithium bromide concentrated solution and supplemented into the absorber 212 after the water vapor is evaporated, and the high-temperature waste gas in the generator 213 can be discharged to the heat exchanger 170 through the exhaust port 240 to preheat the air introduced into the hydrogen catalytic combustion device 100, realizing the recycling of waste gas, the water vapor in the generator 213 is heated and evaporated, enters the condenser 214, and is discharged to the secondary network water outlet 230 for user use after being heated twice.

[0052] The heat supply system 200 uses the boiling point phase change of the water solution and the lithium bromide solution in the absorption heat pump 210 to convert the heat generated by the hydrogen catalytic combustion device 100 to the secondary network water supply, so as to achieve the heat supply purpose of the hydrogen catalytic combustion device 100. Since the high-temperature gas generated by the hydrogen catalytic combustion device 100 is discharged to the hydrogen catalytic combustion device 100 after heat exchange by the absorption heat pump 210, the air in front of the heat exchanger 170 is preheated, the waste gas of the heat supply system 200 is recycled, and the energy utilization rate of the heat supply system 200 can be further improved.

[0053] In an embodiment, the participants Figure 1 include Figure 2 As shown in the figure, the second temperature sensing element 250 is arranged between the air inlet end of the evaporator 211 and the heat supply end of the hydrogen catalytic combustion device 100, and the third temperature sensing element 260 is arranged between the generator 213 and the air source 120. In this way, the second temperature sensing element 250 can sense the temperature of the high-temperature gas of the hydrogen catalytic combustion device 100 introduced into the absorption heat pump 210, so as to adjust the heat generated by the hydrogen catalytic combustion device 100 according to the water supply temperature requirement of the secondary network; the third temperature sensing element 260 can sense the temperature of the high-temperature gas of the absorption heat pump 210 discharged to the hydrogen catalytic combustion device 100, so as to control the temperature of the waste gas according to the preheating requirement of the air generated by the air source 120. Exemplarily, in the embodiment, the temperature of the high-temperature gas of the hydrogen catalytic combustion device 100 introduced into the absorption heat pump 210 is 450°C-500°C, that is, the temperature sensed by the second temperature sensing element 250 is 450°C-500°C, and the temperature of the high-temperature gas of the absorption heat pump 210 discharged to the hydrogen catalytic combustion device 100 is 50°C-60°C, that is, the temperature sensed by the third temperature sensing element 260 is 50°C-60°C.

[0054] The specific heat supply process of the heat supply system 200 in an embodiment of the present application will be described in detail below. Figure 1 Figure 2 Figures 1-3 The specific heat supply process of the heat supply system 200 in an embodiment of the present application will be described in detail below.

[0055] Firstly, the air source 120 introduces air into the first catalytic combustion branch 130 at a flow rate of 670 m 3 / h, and at the same time, the hydrogen source 110 is opened, and the opening and closing ratio of the first control valve 111 is controlled, so that the flow rate of hydrogen introduced into the first catalytic combustion branch 130 is 25 m 3 / h; then, the air and hydrogen entering the first catalytic combustion branch 130 are mixed, and the hydrogen concentration in the mixed gas is maintained at about 3.5%, and the mixed gas enters the first catalytic combustion branch 130 to generate a first catalytic combustion reaction to release a large amount of heat; then, the high-temperature mixed gas after the first catalytic combustion reaction flows into the second catalytic combustion branch 140, and the opening and closing ratio of the second control valve 112 is controlled, so that the flow rate of hydrogen introduced into the second catalytic combustion branch 140 is 17 m3 / h, the hydrogen gas mixed with the high-temperature mixed gas again enters the second catalytic combustion branch 140, and the hydrogen concentration in the second mixed gas is maintained at about 2.5%, and the second mixed gas enters the hydrogen removal module 152 of the second catalytic combustion branch 140 to generate a second catalytic combustion reaction to release more heat; finally, the heat generated by the second catalytic combustion branch 140 enters the absorption heat pump 210, and is converted into secondary network water by the absorption heat pump 210.

[0056] It should be noted that through the control of the above specific embodiments, the high-temperature gas temperature delivered by the hydrogen catalytic combustion device 100 to the absorption heat pump 210 can reach 450℃~500℃. Of course, in other feasible embodiments, the heating demand of the secondary network can be realized by reasonably controlling various parameters according to the heating demand of the secondary network.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0058] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A hydrogen catalytic combustion device, characterized by, The hydrogen catalytic combustion device comprises: a hydrogen source and an air source; a first catalytic combustion branch and at least one second catalytic combustion branch, the first catalytic combustion branch and the second catalytic combustion branch are connected in series, the first catalytic combustion branch and the second catalytic combustion branch are both provided with a catalytic combustion assembly, the air source is connected to the first catalytic combustion branch for supplying air to the first catalytic combustion branch, and the hydrogen source is connected to the first catalytic combustion branch and the second catalytic combustion branch for supplying hydrogen to the first catalytic combustion branch and the second catalytic combustion branch.

2. The hydrogen catalytic combustion device according to claim 1, characterized by The catalytic combustion assembly comprises a gas mixing module and a hydrogen removal module, the gas inlet end of the gas mixing module is connected to the hydrogen source and the air source, and the gas outlet end of the gas mixing module is connected to the hydrogen removal module.

3. The hydrogen catalytic combustion device according to claim 2, characterized in that, The catalytic combustion assembly further comprises a pressure sensor and a concentration sensor, and the pressure sensor and the concentration sensor are both arranged between the gas mixing module and the hydrogen removal module.

4. The hydrogen catalytic combustion device according to claim 1, characterized by The hydrogen catalytic combustion device further comprises a flame arrester arranged at one end close to the catalytic combustion assembly.

5. The hydrogen catalytic combustion device according to claim 1, wherein The hydrogen catalytic combustion device further comprises a heat exchanger and a first temperature sensor, the gas inlet end of the heat exchanger is connected to the air source, the gas outlet end of the heat exchanger is connected to the first catalytic combustion branch, and the first temperature sensor is arranged between the heat exchanger and the first catalytic combustion branch.

6. The hydrogen catalytic combustion device according to claim 1, wherein A first control valve is arranged between the hydrogen source and the first catalytic combustion branch, and the first control valve is used to control the hydrogen flow rate of the hydrogen source supplied to the first catalytic combustion branch. A second control valve is arranged between the hydrogen source and the second catalytic combustion branch, and the second control valve is used to control the hydrogen flow rate of the hydrogen source supplied to the second catalytic combustion branch.

7. The hydrogen catalytic combustion device according to claim 1, wherein The second catalytic combustion branch has a plurality of branches, the plurality of second catalytic combustion branches are connected in series, and the gas inlet end of one of the second catalytic combustion branches is connected in series to the gas outlet end of the first catalytic combustion branch.

8. A heating system, characterized by The heat supply system comprises: the hydrogen catalytic combustion device according to any one of claims 1-7; and an absorption heat pump connected to the heat supply end of the hydrogen catalytic combustion device.

9. The heating system according to claim 8, characterized in that The absorption heat pump comprises an evaporator, an absorber, a generator and a condenser; wherein the heat supply end of the hydrogen catalytic combustion device is connected to the gas inlet end of the evaporator, the evaporator is connected to the absorber and the generator, the absorber and the generator are connected in communication, the absorber is connected to the condenser and a secondary network water inlet, the generator is connected to the condenser, and the gas outlet end of the generator is connected to the air source, and the condenser is connected to the evaporator and a secondary network water outlet.

10. The heating system according to claim 9, characterized in that A second temperature sensor is arranged between the gas inlet end of the evaporator and the heat supply end of the hydrogen catalytic combustion device, and a third temperature sensor is arranged at the gas outlet end of the generator, and the third temperature sensor is used to detect the temperature of the gas flowing out of the gas outlet end of the generator.

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