Methanol combustion catalytic reforming hydrogen production device

Abstract

The utility model discloses a methanol combustion catalytic reforming hydrogen production device which comprises a first gasification chamber, a second gasification chamber and a combustion chamber, the first gasification chamber and the second gasification chamber are sequentially arranged, the combustion chamber is arranged in the first gasification chamber and the second gasification chamber and communicated with the first gasification chamber, and the second gasification chamber and the combustion chamber are further communicated with a reforming chamber. A heat exchange part is arranged in the reforming chamber; high integration level, small size and light weight can be realized during extraction, the operation efficiency of the device is improved, the power consumption is reduced, methanol fuel can be effectively treated to form reformed hydrogen meeting requirements, and the reformed hydrogen can directly enter a high-temperature methanol fuel cell stack.

Description

Technical Field

[0001] The present application relates to a methanol combustion catalytic reforming hydrogen production device, belonging to the field of fuel cells. Background Art

[0002] In order to avoid the many environmental problems caused by the use of traditional fossil fuels, alternative energy has been introduced to meet the needs of sustainable development of human society. Hydrogen is an efficient, low-emission green alternative energy, but if hydrogen is to be widely used as a raw material in industrial production and other fields, it needs to be manufactured in various ways.

[0003] Methanol is one of the most common hydrogen source carriers in China. Methanol can be used to produce hydrogen through reforming, thus providing a hydrogen source for fuel cells. This not only solves the transportation problem, but also has certain advantages in terms of safety and economy. Using methanol as a raw material to produce hydrogen can produce hydrogen in a sustainable and stable manner as long as fuel is continuously provided.

[0004] There is a lack of such devices in the prior art. Most of them use separate devices to independently complete hydrogen separation, combustion, catalysis and other processes. The devices are complicated, bulky, have low fuel utilization, high power consumption, and are not convenient for application in multiple scenarios. Utility Model Content

[0005] In order to solve the above problems in the prior art, it is necessary to provide a methanol combustion catalytic reforming hydrogen production device to effectively process the methanol fuel to form reformed hydrogen that meets the requirements, so that the reformed hydrogen can directly enter the high-temperature methanol fuel cell stack.

[0006] According to one aspect of the present application, a methanol combustion catalytic reforming hydrogen production device is provided, comprising a first gasification chamber and a second gasification chamber arranged in sequence, and a combustion chamber arranged inside the first gasification chamber and the second gasification chamber and connected to the first gasification chamber;

[0007] The second gasification chamber and the combustion chamber are also respectively connected to the reforming chamber;

[0008] A heat exchange portion is disposed inside the reforming chamber.

[0009] The first gasification chamber is used to introduce the anode tail gas of the fuel cell stack, which is completely gasified in the first gasification chamber and used as the raw material for combustion in the combustion chamber;

[0010] The second vaporization chamber is used to introduce methanol solution, which is completely vaporized after heat exchange with the combustion chamber and then introduced into the reforming chamber for reforming catalytic reaction to produce hydrogen;

[0011] The combustion chamber is used to introduce methanol solution for atomization, and introduce air for ignition, and burn together with the anode tail gas of the stack introduced into the first gasification chamber. The generated hot gas is introduced into the heat exchange part to provide heat for the subsequent reforming catalytic reaction and the entire system;

[0012] Heat is exchanged with the second vaporization chamber, so that the methanol solution introduced into the second vaporization chamber is completely vaporized and then introduced into the reforming chamber for reforming catalytic reaction to produce hydrogen;

[0013] The reforming chamber is filled with granular reforming catalyst, and the completely vaporized methanol solution produced in the second vaporization chamber is introduced into the reforming chamber to generate hydrogen by endothermic reaction with the reforming catalyst;

[0014] Its tail gas chamber is connected to the heat exchange part and is used to discharge the waste gas after heat exchange in the heat exchange part;

[0015] The heat exchange part is used to introduce hot air generated by combustion in the combustion chamber, so that heat exchange occurs in the reforming chamber to provide the heat energy required for the catalytic reaction.

[0016] Optionally, the combustion chamber includes an ignition chamber and a catalytic chamber;

[0017] The catalytic chamber is arranged inside the second gasification chamber;

[0018] The catalytic chamber is filled with a combustion catalyst;

[0019] Heat exchange fins are provided in both the first vaporization chamber and the second vaporization chamber;

[0020] Preferably, the combustion catalyst is Pt.

[0021] The ignition chamber is used to introduce methanol solution for atomization, and to introduce air to form a mixed gas for combustion together with the anode tail gas of the stack introduced into the first gasification chamber after ignition;

[0022] The above-mentioned catalytic chamber is used to carry out catalytic combustion and generate hot gas;

[0023] The combustion catalyst is used to catalyze the combustion of mixed gas;

[0024] The heat exchange fins are used to transfer heat to fully heat and gasify the methanol solution / anode tail gas of the stack.

[0025] Optionally, the first gasification chamber, the second gasification chamber, and the combustion chamber are each provided with a raw material inlet;

[0026] The combustion chamber is provided with a first inlet and a second inlet;

[0027] An air pump is provided at the second inlet;

[0028] The reforming chamber is provided with a first gas outlet and a second gas outlet.

[0029] The raw material inlet of the first gasification chamber can be connected to the anode tail gas of the fuel cell stack, and the tail gas is used as the raw material for the combustion reaction;

[0030] The first inlet is used to introduce methanol solution, which is atomized and used as a raw material for combustion;

[0031] The second inlet is used to introduce air to support the continuous combustion.

[0032] Optionally, the ignition chamber includes a connected ignition plug and an atomizing net;

[0033] The first inlet is connected to the atomization network.

[0034] The atomizing net is used to atomize the methanol solution introduced into the first inlet to prepare fuel for subsequent ignition;

[0035] The ignition plug is used to ignite the heated atomized methanol solution.

[0036] Optionally, the reforming chamber includes a reforming chamber and an exhaust chamber;

[0037] The reforming chamber is in communication with the second gasification chamber, and the tail gas chamber is in communication with the heat exchange portion;

[0038] The first gas outlet is opened in the reforming chamber, and the second gas outlet is opened in the tail gas chamber;

[0039] The reforming chamber is filled with a reforming catalyst;

[0040] A spiral baffle is also provided in the reforming chamber;

[0041] Preferably, the spiral baffle adopts a spiral baffle structure to evenly separate and guide the reforming catalyst;

[0042] Preferably, the reforming catalyst is CuO-ZnO-Al2O3.

[0043] The above-mentioned reforming catalyst is used to catalyze the vaporized methanol introduced into the reforming chamber to produce hydrogen after the reaction;

[0044] The spiral baffle is used to increase the residence time of the reaction gas and evenly distribute the gas flow direction;

[0045] The spiral baffle structure of the spiral baffle evenly separates and guides the reforming catalyst, so that the gasified methanol entering the cavity to participate in the reaction can evenly flow through the catalyst bed and fully react with the reforming catalyst, thereby improving the hydrogen conversion rate.

[0046] Optionally, an air guide orifice is provided between the ignition chamber and the catalytic chamber;

[0047] An air guide hole plate is also arranged between the reforming chamber and the tail gas chamber.

[0048] The air guide hole plate is used to guide the gas generated in the front chamber into the next chamber evenly.

[0049] Optionally, the heat exchange part adopts heat exchange tubes, and the heat exchange tubes are evenly distributed in the reforming chamber;

[0050] Preferably, the heat exchange tubes are evenly distributed in the reforming chamber in a circumferential array and are connected to the catalytic chamber;

[0051] Preferably, the heat exchange tubes penetrate the spiral baffles, and their outer surfaces are in close contact with the spiral baffles;

[0052] This arrangement can better transfer the heat of the hot air flowing in the heat exchange tubes to the spiral baffles. At the same time, since the spiral baffles are in full contact with the reforming catalyst, they can better provide heat for the reforming catalytic reaction.

[0053] Preferably, the heat exchange tubes are spiral grooved tubes, both ends of the tube body of the spiral grooved tube are smooth circular tubes, and an inner concave spiral groove is provided in the middle of the tube body.

[0054] This arrangement increases the heat exchange area of ​​the heat exchange tube body, making it easier for the heat in the center of the fluid to transfer outward, and the spiral grooves can completely generate turbulence in the gas passing through the heat exchange tube, greatly improving the heat exchange coefficient and enhancing the heat exchange effect.

[0055] Optionally, the spacing between each of the heat exchange tubes is set to 2D-10D according to the particle diameter D of the reforming catalyst;

[0056] Preferably, the spacing between each of the heat exchange tubes is set to 3D~5D.

[0057] Optionally, the combustion chamber and the reforming chamber are each provided with a temperature measuring device;

[0058] Preferably, the ignition chamber is provided with a temperature measuring device, the connection between the ignition chamber and the catalytic chamber is provided with a temperature measuring device, and the catalytic chamber is provided with a temperature measuring device.

[0059] The above-mentioned temperature measuring device is used to monitor the temperature at various locations in the device in real time.

[0060] Optionally, a plurality of temperature measuring devices are arranged in the reforming chamber to perform multi-point temperature measurement;

[0061] Preferably, three temperature measuring devices are equidistantly arranged in the reforming chamber, and one temperature measuring device is arranged in the tail gas chamber, and an integrated structural design is adopted;

[0062] Since the filling amount of reforming catalyst directly affects the efficiency of hydrogen production, the temperature measuring device adopts an integrated structure design with a small volume and small space in the reforming chamber, ensuring that more reforming catalyst can be filled. It can also accurately mark the position in the reforming chamber to ensure that the temperature of the reforming reaction can be monitored in a step-by-step manner.

[0063] Working steps:

[0064] 1. Burning methanol to increase temperature: connecting the inlet of the first gasification chamber to the outlet of the anode tail gas of the stack, and controlling the tail gas flow rate;

[0065] Combustion air is introduced into the second inlet of the combustion chamber, and the air pump is turned on to adjust the flow rate of the combustion air. The power is connected and the ignition plug is turned on for ignition. After heating for tens of seconds, methanol solution is introduced into the first inlet of the combustion chamber and its flow rate is controlled for atomization. After ignition, the power is turned off and the combustion chamber is waited for continuous combustion and temperature rise.

[0066] 2. Activating the reforming catalyst: First, hydrogen is introduced into the second gasification chamber and its flow rate is controlled. The hydrogen enters the reforming chamber along the second gasification chamber to activate the catalyst loaded in the reforming chamber and discharge the air initially present;

[0067] Adjust the air pump to maintain the combustion air flow rate within the rated range, observe the temperature measuring device, and after the temperature in the reforming chamber drops to the set temperature range, turn on the power, continue to introduce methanol solution into the first inlet, continue atomization combustion, and after the temperature in the reforming chamber rises to the set temperature range, turn off the power.

[0068] 3. Reforming to produce hydrogen: When the temperature in the reforming chamber is higher than 250°C, inject methanol solution into the raw material inlet of the second gasification chamber and control its flow rate. At the same time, adjust the air pump to control the flow rate of the combustion air to the set range, and increase the flow rate of the methanol solution flowing into the first inlet. It should be noted that at this time, the feed should be increased in a step-by-step manner to prevent the reforming chamber from losing temperature due to instantaneous large-scale heat absorption. Adjust the input flow rate of the anode tail gas of the fuel cell stack to the set range to stabilize the reforming device at the rated temperature and operate stably under this condition.

[0069] 4. Shutdown: Stop the injection of methanol solution at the inlet of the second gasification chamber, and gradually reduce the flow rate of the anode tail gas of the stack introduced at the inlet of the first gasification chamber. It should be noted that the flow rate cannot be directly reduced to zero from the atmospheric volume, otherwise the combustion chamber may explode easily;

[0070] The flow rate of the air introduced into the second inlet is gradually reduced to a set range, and then the inlet of the first gasification chamber is closed to stop the injection of the anode tail gas of the stack, and then the flow rate of the air is appropriately increased to quickly cool down the device;

[0071] When the overall temperature of the device drops below 100°C, stop air injection.

[0072] Working principle:

[0073] The methanol solution injected into the first inlet passes through the atomizing net, is ignited by the ignition plug in the ignition chamber, and is fully mixed with the air introduced into the second inlet and the anode tail gas of the stack introduced into the first gasification chamber inlet for catalytic combustion, forming a hot air flow in the catalytic chamber, and then enters the heat exchange tubes connected to the catalytic chamber, and provides heat for the reforming catalytic hydrogen production in the reforming chamber with the assistance of the spiral baffle, and is discharged into the tail gas chamber of the reforming chamber and discharged from the second gas outlet;

[0074] After the methanol solution is injected into the second gasification chamber, it absorbs the heat generated by the catalytic combustion in the catalytic chamber with the assistance of the heat exchange fins and is completely gasified and enters the reforming chamber connected to the second gasification chamber, and performs a catalytic reaction under the action of the reforming catalyst filled in the reforming chamber to generate hydrogen that meets the requirements of the high-temperature methanol fuel cell stack, and outputs the hydrogen that meets the requirements from the first gas outlet;

[0075] Temperature measuring devices are installed at multiple locations in the reforming hydrogen production device to observe the change of heat. The temperature at the inlet and outlet of the reforming chamber is crucial to the heat energy consumed by the reforming reaction. Setting temperature measuring devices at multiple locations facilitates better and more timely grasp of the heat energy consumption so as to make corresponding adjustments in time.

[0076] At the same time, the temperature of the exhaust chamber outlet will directly affect the concentration of CO in the exhaust gas. Therefore, the outlet temperature must be controlled to reduce the CO content.

[0077] The beneficial effects of this application include:

[0078] The methanol combustion catalytic reforming hydrogen production device provided in the present application has a high degree of integration, integrating the first gasification chamber, the second gasification chamber, the combustion chamber, the reforming chamber, and the heat exchange part into one, and has the advantages of small size and light weight;

[0079] The anode tail gas port of the fuel cell stack can be connected to the second gasification chamber, so that the excess hydrogen in the fuel cell stack after the hydrogen-oxygen reaction can be introduced into the second gasification chamber together with the tail gas, and after the completion of gasification, it can enter the catalytic chamber to generate heat reaction with the combustion catalyst and exchange heat with the combustion chamber, so as to maintain the temperature of the combustion chamber. It is no longer necessary to introduce additional methanol into the combustion chamber, so as to ensure the appropriate temperature required by the methanol reforming catalyst, thereby improving the fuel utilization rate;

[0080] There is no need to set up a separate separation device in the reforming chamber, and the generated hydrogen can be directly transported to the fuel cell stack, which improves the operating efficiency of the device and reduces power consumption;

[0081] During the startup process, the ignition plug is equipped to directly burn methanol, which can shorten the startup time. At the same time, the air heat transfer method can be used to increase the temperature of the reforming chamber and reduce the startup power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Figure 1 This is a schematic diagram of the structure of a methanol combustion catalytic reforming hydrogen production device provided in one embodiment of the present application;

[0083] Figure 2 This is a principle block diagram of a reforming hydrogen production device provided in one embodiment of the present application;

[0084] Figure 3 A schematic diagram of the installation structure of heat exchange tubes and spiral baffles inside the reforming chamber of a reforming hydrogen production device provided in one embodiment of the present application;

[0085] Figure 4 A schematic diagram of the inlet and outlet and gas flow direction of a reforming hydrogen production device provided in one embodiment of the present application;

[0086] Figure 5 A schematic diagram of the three-dimensional structure of a reforming hydrogen production device provided in one embodiment of the present application;

[0087] Figure 6 A front view of a reforming hydrogen production device and a schematic diagram of the position of a temperature measuring device provided in one embodiment of the present application;

[0088] Figure 7 This is a working flow chart of a reforming hydrogen production device provided in one embodiment of the present application.

[0089] List of parts and reference numerals:

[0090] Atomizing net; 2. Ignition plug; 3. Air guide orifice; 4. Catalytic chamber; 5. Ignition chamber; 6. First gasification chamber; 7. Second gasification chamber; 8. Reforming chamber; 9. Heat exchange tubes; 10. Tail gas chamber; 11. Spiral baffle; 12. First inlet; 13. Second inlet; 14. First gas outlet; 15. Second gas outlet; 16. Heat exchange fins; T: Temperature measuring device. DETAILED DESCRIPTION

[0091] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0092] According to one embodiment of the present application, a methanol combustion catalytic reforming hydrogen production device is provided, comprising a first gasification chamber 6 and a second gasification chamber 7 arranged in sequence, and a combustion chamber arranged inside the first gasification chamber 6 and the second gasification chamber 7 and connected to the first gasification chamber 6;

[0093] The second gasification chamber 7 and the combustion chamber are also connected to the reforming chamber respectively;

[0094] A heat exchange portion is disposed inside the reforming chamber.

[0095] The first gasification chamber 6 is used to introduce the anode tail gas of the fuel cell stack, which is completely gasified in the first gasification chamber 6 and used as the raw material for combustion in the combustion chamber;

[0096] The second vaporization chamber 7 is used to introduce methanol solution, which is completely vaporized after heat exchange with the combustion chamber and then introduced into the reforming chamber 8 for reforming catalytic reaction to produce hydrogen;

[0097] The combustion chamber is used to introduce methanol solution for atomization, and introduce air for ignition, and burn together with the anode tail gas of the stack introduced into the first gasification chamber 6. The generated hot gas is introduced into the heat exchange part to provide heat for the subsequent reforming catalytic reaction and the entire system;

[0098] Heat exchange occurs with the second vaporization chamber 7, so that the methanol solution introduced into the second vaporization chamber 7 is completely vaporized and then introduced into the reforming chamber 8 for reforming catalytic reaction to produce hydrogen;

[0099] The reforming chamber 8 is filled with granular reforming catalyst, and the completely vaporized methanol solution produced in the second vaporization chamber 7 is introduced into the reforming chamber 8 to generate hydrogen by endothermic reaction with the reforming catalyst.

[0100] The tail gas chamber 10 is connected to the heat exchange part and is used to discharge the exhaust gas after heat exchange in the heat exchange part;

[0101] The heat exchange part is used to introduce hot air generated by combustion in the combustion chamber, so that heat exchange occurs in the reforming chamber 8, providing the thermal energy required for the catalytic reaction.

[0102] The combustion chamber includes an ignition chamber 5 and a catalytic chamber 4;

[0103] The catalytic chamber 4 is arranged inside the second gasification chamber 7;

[0104] The catalytic chamber 4 is filled with a combustion catalyst;

[0105] Heat exchange fins 16 are provided in both the first vaporization chamber 6 and the second vaporization chamber 7;

[0106] In this embodiment, the combustion catalyst is Pt.

[0107] The ignition chamber 5 is used to introduce methanol solution for atomization, and introduce air to form a mixed gas for combustion together with the anode tail gas of the stack introduced into the first gasification chamber 6 after ignition;

[0108] The catalytic chamber 4 is used for catalytic combustion and generating hot gas;

[0109] The combustion catalyst is used to catalyze the combustion of mixed gas;

[0110] The heat exchange fins 16 are used to transfer heat to fully heat and gasify the introduced methanol solution / anode tail gas of the stack.

[0111] The first gasification chamber 6, the second gasification chamber 7, and the combustion chamber are respectively provided with a raw material inlet;

[0112] The combustion chamber is provided with a first inlet 12 and a second inlet 13;

[0113] An air pump is provided at the second inlet 13;

[0114] The reforming chamber is provided with a first gas outlet 14 and a second gas outlet 15 .

[0115] The raw material inlet of the first gasification chamber 6 can be connected to the anode tail gas of the fuel cell stack, and the tail gas is used as the raw material for the combustion reaction;

[0116] The first inlet 12 is used to introduce methanol solution, which is atomized and used as a raw material for combustion;

[0117] The second inlet 13 is used to introduce air to support the continuous combustion.

[0118] The ignition chamber 5 includes a connected ignition plug 2 and an atomizing network 1;

[0119] The first inlet 12 is connected to the atomization network 1 .

[0120] The atomizing net 1 is used to atomize the methanol solution introduced into the first inlet 12 to prepare fuel for subsequent ignition;

[0121] The ignition plug 2 is used to ignite the heated atomized methanol solution.

[0122] The reforming chamber includes a reforming chamber 8 and an exhaust chamber 10;

[0123] The reforming chamber 8 is in communication with the second gasification chamber 7, and the tail gas chamber 10 is in communication with the heat exchange part;

[0124] The first gas outlet 14 is opened in the reforming chamber 8, and the second gas outlet 15 is opened in the tail gas chamber 10;

[0125] The reforming chamber 8 is filled with a reforming catalyst;

[0126] A spiral baffle 11 is also provided in the reforming chamber 8;

[0127] The spiral baffle 11 adopts a spiral baffle structure to evenly separate and guide the reforming catalyst;

[0128] In this embodiment, the reforming catalyst is CuO-ZnO-Al2O3.

[0129] The above-mentioned reforming catalyst is used to catalyze the vaporized methanol introduced into the reforming chamber 8 to produce hydrogen after the reaction;

[0130] The spiral baffle 11 is used to increase the residence time of the reaction gas and evenly distribute the gas flow direction;

[0131] The spiral baffle structure of the spiral baffle 11 evenly separates and guides the reforming catalyst, so that the vaporized methanol entering the cavity to participate in the reaction can evenly flow through the catalyst bed and fully react with the reforming catalyst, thereby improving the hydrogen conversion rate.

[0132] An air guide hole plate 3 is provided between the ignition chamber 5 and the catalytic chamber 4;

[0133] An air guide hole plate 3 is also provided between the reforming chamber 8 and the tail gas chamber 10 .

[0134] The air guide hole plate 3 is used to guide the gas generated in the front chamber into the next chamber evenly.

[0135] The heat exchange part adopts heat exchange tubes 9, and the heat exchange tubes 9 are evenly distributed in the reforming chamber 8;

[0136] The heat exchange tubes 9 are evenly distributed in the reforming chamber 8 in a circumferential array and are connected to the catalytic chamber 4;

[0137] The heat exchange tubes 9 pass through the spiral baffles 11, and their outer surfaces are in close contact with the spiral baffles 11;

[0138] This arrangement can better transfer the heat of the hot air flowing in the heat exchange tubes 9 to the spiral baffles 11. At the same time, since the spiral baffles 11 are in full contact with the reforming catalyst, heat can be better provided for the reforming catalytic reaction.

[0139] The heat exchange tubes 9 are spiral groove tubes, both ends of the tube body of the spiral groove tube are smooth round tubes, and a concave spiral groove is provided in the middle of the tube body.

[0140] This arrangement increases the heat exchange area of ​​the heat exchange tube body 9, making it easier for the heat in the center of the fluid to transfer outward, and the spiral grooves can completely generate turbulence in the gas passing through the heat exchange tube, greatly improving the heat exchange coefficient and enhancing the heat exchange effect.

[0141] In this embodiment, the heat exchange tubes 9 are spiral groove tubes with a diameter of 5-8 mm, and a circumferential array heat exchange chamber tube method is adopted, so the spacing between each tube should be about 4.5-7.5 mm.

[0142] The spacing between each of the heat exchange tubes 9 is set to 3D-5D according to the particle diameter D of the reforming catalyst.

[0143] In this embodiment, the particle diameter D of the reforming catalyst selected is 1.5 mm, and its specification is: Φ1.5*1.5 mm. The heat transfer spacing is suitable for 2 to 10 times D, and the optimal is 3 to 5 times D. Therefore, the optimal solution is selected in this embodiment, and the spacing between each tube array is further determined to be about 5 mm.

[0144] The combustion chamber and the reforming chamber are respectively provided with a temperature measuring device T;

[0145] The ignition chamber 5 is provided with a temperature measuring device T, the connection between the ignition chamber 5 and the catalytic chamber 4 is provided with a temperature measuring device T, and the catalytic chamber 4 is provided with a temperature measuring device T.

[0146] The temperature measuring device T is used to monitor the temperature at various locations in the device in real time.

[0147] A plurality of temperature measuring devices T are arranged in the reforming chamber to perform multi-point temperature measurement;

[0148] Three temperature measuring devices T are equidistantly arranged in the reforming chamber 8 , and one temperature measuring device T is arranged in the tail gas chamber 10 .

[0149] Since the filling amount of the reforming catalyst directly affects the efficiency of hydrogen production, the temperature measuring device T adopts an integrated structure design with a small volume and occupies a small space in the reforming chamber 8, ensuring that more reforming catalyst can be filled. It can also accurately mark the position in the reforming chamber 8 to ensure that the temperature of the reforming reaction can be monitored in a step-by-step manner.

[0150] In this embodiment, the temperature measuring device T is a temperature measuring thermocouple with a diameter of about Φ6 mm and made of 316L stainless steel.

[0151] like Figure 7 As shown, the working steps are:

[0152] 1. Burning methanol to increase temperature: connecting the inlet of the first gasification chamber 6 to the outlet of the anode tail gas of the stack, and controlling the tail gas flow rate;

[0153] Combustion air is introduced into the second inlet 13 of the combustion chamber, and the air pump is turned on to adjust the flow rate of the combustion air. The power is connected and the ignition plug 2 is turned on for ignition. After heating for tens of seconds, methanol solution is introduced into the first inlet 12 of the combustion chamber and its flow rate is controlled for atomization. After ignition, the power is turned off and the combustion chamber is waited for continuous combustion and temperature rise.

[0154] 2. Activate the reforming catalyst: first introduce hydrogen into the second gasification chamber 7 and control its flow rate, and the hydrogen enters the reforming chamber 8 along the second gasification chamber 7 to activate the catalyst loaded in the reforming chamber 8 and discharge the air initially present;

[0155] Adjust the air pump to maintain the combustion air flow rate within the rated range, observe the temperature measuring device T, and after the temperature in the reforming chamber 8 drops to the set temperature range, turn on the power, continue to introduce methanol solution into the first inlet 12, continue atomization combustion, and after the temperature in the reforming chamber 8 rises to the set temperature range, turn off the power.

[0156] 3. Reforming to produce hydrogen: When the temperature in the reforming chamber 8 is higher than 250°C, inject methanol solution into the raw material inlet of the second gasification chamber 7 and control its flow rate. At the same time, adjust the air pump to control the flow rate of the combustion air to the set range, and increase the flow rate of the methanol solution flowing into the first inlet 12. It should be noted that at this time, the feed should be increased in a step-by-step manner to prevent the reforming chamber 8 from losing temperature due to instantaneous large-scale heat absorption, and adjust the input flow rate of the anode tail gas of the fuel cell stack to the set range to stabilize the reforming device at the rated temperature and operate stably under this operating condition.

[0157] 4. Shutdown: Stop the injection of methanol solution at the inlet of the second gasification chamber 7, and gradually reduce the flow rate of the anode tail gas of the stack introduced at the inlet of the first gasification chamber 6. It should be noted that the flow rate cannot be directly reduced to zero from the atmospheric volume, otherwise the combustion chamber may explode easily;

[0158] The flow rate of the air introduced into the second inlet 13 is gradually reduced to a set range, and then the inlet of the first gasification chamber 6 is closed to stop the injection of the anode tail gas of the stack, and then the flow rate of the air is appropriately increased to quickly cool down the device;

[0159] When the overall temperature of the device drops below 100°C, stop air injection.

[0160] Working principle:

[0161] The methanol solution injected into the first inlet 12 passes through the atomizing net 1, is ignited by the ignition plug 2 in the ignition chamber 5, and is fully mixed with the air introduced into the second inlet 13 and the anode tail gas of the battery stack introduced into the inlet of the first gasification chamber 6 for catalytic combustion, forming a hot air flow in the catalytic chamber 4, and then enters the heat exchange tube 9 connected to the catalytic chamber 4, and provides heat for the reforming catalytic hydrogen production in the reforming chamber 8 with the assistance of the spiral baffle 11, and is discharged to the tail gas chamber 10 of the reforming chamber, and discharged from the second gas outlet 15;

[0162] After the methanol solution is injected into the second gasification chamber 7, it absorbs the heat generated by the catalytic combustion in the catalytic chamber 4 with the assistance of the heat exchange fins 16 and is completely gasified and enters the reforming chamber 8 connected to the second gasification chamber 7. Under the action of the reforming catalyst filled in the reforming chamber 8, a catalytic reaction is carried out to generate hydrogen that meets the requirements of the high-temperature methanol fuel cell stack, and the hydrogen that meets the requirements is output from the first gas outlet 14;

[0163] Temperature measuring devices T are installed at multiple locations in the reforming hydrogen production device to observe the change of heat. The temperature at the inlet and outlet of the reforming chamber is crucial to the heat energy consumed by the reforming reaction. Setting temperature measuring devices T at multiple locations facilitates better and more timely grasp of the heat energy consumption so as to make corresponding adjustments in time.

[0164] At the same time, the temperature at the outlet of the tail gas chamber 10 will directly affect the concentration of CO in the tail gas. Therefore, the temperature at the outlet must be controlled to reduce the content of CO.

[0165] The above description is only a partial embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the above disclosed technical content to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A methanol combustion catalytic reforming hydrogen production device, characterized in that: It comprises a first gasification chamber and a second gasification chamber which are arranged in sequence, and a combustion chamber which is arranged inside the first gasification chamber and the second gasification chamber and is connected to the first gasification chamber; The second gasification chamber and the combustion chamber are also respectively connected to the reforming chamber; A heat exchange portion is disposed inside the reforming chamber.

2. A methanol combustion catalytic reforming hydrogen production device according to claim 1, characterized in that: The combustion chamber includes an ignition chamber and a catalytic chamber; The catalytic chamber is arranged inside the second gasification chamber; The catalytic chamber is filled with a combustion catalyst; Heat exchange fins are disposed in the first vaporization chamber and the second vaporization chamber.

3. A methanol combustion catalytic reforming hydrogen production device according to claim 2, characterized in that: The first gasification chamber, the second gasification chamber, and the combustion chamber are each provided with a raw material inlet; The combustion chamber is provided with a first inlet and a second inlet; An air pump is provided at the second inlet; The reforming chamber is provided with a first gas outlet and a second gas outlet.

4. A methanol combustion catalytic reforming hydrogen production device according to claim 3, characterized in that: The ignition chamber includes a connected ignition plug and an atomizing network; The first inlet is connected to the atomization network.

5. A methanol combustion catalytic reforming hydrogen production device according to claim 4, characterized in that: The reforming chamber includes a reforming chamber and an exhaust chamber; The reforming chamber is in communication with the second gasification chamber, and the tail gas chamber is in communication with the heat exchange portion; The first gas outlet is opened in the reforming chamber, and the second gas outlet is opened in the tail gas chamber; The reforming chamber is filled with a reforming catalyst; A spiral baffle is also arranged in the reforming chamber.

6. A methanol combustion catalytic reforming hydrogen production device according to claim 5, characterized in that: The spiral baffle adopts a spiral baffle structure to evenly separate and guide the reforming catalyst.

7. A methanol combustion catalytic reforming hydrogen production device according to claim 6, characterized in that: An air guide orifice is provided between the ignition chamber and the catalytic chamber; An air guide hole plate is also arranged between the reforming chamber and the tail gas chamber.

8. A methanol combustion catalytic reforming hydrogen production device according to claim 7, characterized in that: The heat exchange part adopts heat exchange tubes, and the heat exchange tubes are evenly distributed in the reforming chamber and communicated with the catalytic chamber.

9. A methanol combustion catalytic reforming hydrogen production device according to claim 8, characterized in that: The heat exchange tubes are evenly distributed in the reforming chamber in a circular array.

10. A methanol combustion catalytic reforming hydrogen production device according to claim 9, characterized in that: The heat exchange tubes penetrate the spiral baffles, and the outer surfaces of the heat exchange tubes are in close contact with the spiral baffles.

11. A methanol combustion catalytic reforming hydrogen production device according to claim 10, characterized in that: The heat exchange tubes are spiral groove tubes, both ends of the tube body of the spiral groove tube are smooth round tubes, and an inner concave spiral groove is provided in the middle of the tube body.

12. A methanol combustion catalytic reforming hydrogen production device according to claim 11, characterized in that: The spacing between each of the heat exchange tubes is set to 2D-10D according to the particle diameter D of the reforming catalyst.

13. A methanol combustion catalytic reforming hydrogen production device according to claim 12, characterized in that: The spacing between each of the heat exchange tubes is set to 3D~5D.

14. A methanol combustion catalytic reforming hydrogen production device according to claim 13, characterized in that: The combustion chamber and the reforming chamber are respectively provided with temperature measuring devices.

15. A methanol combustion catalytic reforming hydrogen production device according to claim 14, characterized in that: The ignition chamber is provided with a temperature measuring device, the connection between the ignition chamber and the catalytic chamber is provided with a temperature measuring device, and the catalytic chamber is provided with a temperature measuring device.

16. A methanol combustion catalytic reforming hydrogen production device according to claim 15, characterized in that: A plurality of temperature measuring devices are arranged in the reforming chamber to carry out multi-point temperature measurement.

17. A methanol combustion catalytic reforming hydrogen production device according to claim 16, characterized in that: Three temperature measuring devices are equidistantly arranged in the reforming chamber, and one temperature measuring device is arranged in the tail gas chamber, and an integrated structural design is adopted.

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