A steam generator and a hydrogen production method

Abstract

The present invention provides a steam generator and a hydrogen production method. The steam generator includes: a liquid storage cavity provided at one end of the steam generator; at least one steam pipe, with one end of each steam pipe connected to the liquid storage cavity; a heating device including: a first electric heating device connected to the liquid storage cavity for heating a liquid medium in the liquid storage cavity; a catalytic combustion heating device group provided at the other end of the steam generator; wherein the steam pipe passes through the catalytic combustion heating device group, and the catalytic heating device group can heat the steam pipe. The present invention solves the problems that the existing steam generators are not green and environmentally friendly enough and have low economic benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical engineering, and in particular, to a steam generator and a hydrogen production method. Background Art

[0002] A steam generator is a mechanical device that uses the heat energy of fuel or other energy sources to heat water into hot water or steam. In the prior art, coal-fired steam generators are mainly used. However, since coal combustion will produce a large amount of waste gas and a large amount of coal cannot be completely burned, the coal-fired heating method has the disadvantages of environmental pollution, low utilization rate, and low economic efficiency. In order to reduce environmental pollution, at present, electric steam generators are widely used. Although electric heaters do not produce waste gas, the power consumption of electric heaters is huge. Therefore, electric heaters have the disadvantages of high energy consumption and low economic efficiency.

[0003] In summary, the existing steam generators have the problems of insufficient environmental friendliness and low economic efficiency. Summary of the Invention

[0004] The problem solved by the present invention is that the existing steam generators have the problems of insufficient environmental friendliness and low economic efficiency.

[0005] To solve the above problems, the present invention provides a steam generator, including: a liquid storage cavity provided at one end of the steam generator; a first electric heating device connected to the liquid storage cavity for heating a liquid medium in the liquid storage cavity; a catalytic combustion heating device group provided at the other end of the steam generator; and at least one steam pipe, one end of each steam pipe being connected to the liquid storage cavity; wherein, the steam pipe passes through the catalytic combustion heating device group, and the catalytic combustion heating device group can heat the steam pipe.

[0006] By heating the liquid medium in the liquid storage cavity and the steam pipe through the first electric heating device and the catalytic combustion heating device group, steam is obtained and output to an external pipe communicated with the steam generator along the steam pipe.

[0007] Further, the catalytic combustion heating device group at least includes: a tail gas inlet cavity; a combustion catalytic cavity; a heat storage heating cavity; a steam superheat cavity; wherein, the tail gas inlet cavity, the combustion catalytic cavity, the heat storage heating cavity and the steam superheat cavity are stacked and arranged in sequence, and are separated by porous plates pairwise.

[0008] In this embodiment, the tail gas inlet cavity, the combustion catalytic cavity, the heat storage heating cavity and the steam superheat cavity can make full use of the residual energy in the tail gas and the waste heat in the hot waste gas to heat the medium in the steam pipe, improving the energy utilization rate.

[0009] Further, the exhaust gas inlet cavity further includes an exhaust gas inlet disposed outside the vapor generator housing; wherein, the exhaust gas inlet cavity is disposed at the lower part of the catalytic combustion cavity.

[0010] In this embodiment, the exhaust gas inlet is used to introduce exhaust gas, and is arranged at the lower part of the catalytic combustion cavity. The exhaust gas can be mixed evenly in the exhaust gas inlet cavity and then enter the catalytic combustion cavity to improve its temperature uniformity.

[0011] Further, the combustion catalytic cavity further includes an exhaust gas inlet disposed outside the vapor generator housing; a combustion catalyst disposed between the vapor generator and the steam pipe; wherein, the combustion catalytic cavity is disposed above the exhaust gas inlet cavity.

[0012] In this embodiment, the exhaust gas inlet is used to introduce hot exhaust gas, and the combustion catalyst is used to catalytically combust the exhaust gas to generate heat. On the one hand, the heat of the hot exhaust gas can be absorbed to improve the energy utilization rate; on the other hand, the hot exhaust gas can appropriately heat the combustion catalyst to make its temperature reach the optimal temperature for reacting and combusting with the exhaust gas, thereby improving its reaction efficiency.

[0013] Further, the regenerative heating cavity further includes regenerative balls disposed between the vapor generator and the steam pipe; fins disposed outside each steam pipe; or a regenerative block is arranged in the regenerative heating cavity, and through holes matching the steam pipes are arranged on the regenerative block for inserting the steam pipes; wherein, the regenerative heating cavity is disposed above the combustion catalytic cavity.

[0014] In this embodiment, the regenerative balls or the regenerative block can reduce the heat loss of the hot exhaust gas and improve the utilization rate of the internal heat energy of the hot exhaust gas. The fins can increase the heat exchange area of the steam pipe and improve the heat exchange efficiency. The regenerative balls or the regenerative block can store part of the heat of the hot exhaust gas, thereby fully absorbing the heat of the hot exhaust gas and storing it in the regenerative balls or the regenerative block, preventing the heat from being carried away by the hot exhaust gas and causing heat waste. Furthermore, after the hot exhaust gas flows away, the regenerative balls or the regenerative block continuously release the heat to the steam pipe and continuously heat the steam therein to increase its temperature. By arranging the regenerative balls or the regenerative block, a large amount of heat of the hot exhaust gas is saved, and heat transfer is completed, thereby improving the heat utilization rate.

[0015] Further, the steam superheating cavity further includes an exhaust gas outlet disposed outside the vapor generator housing; wherein, the steam superheating cavity is superheated by means of electric heating and / or catalytic combustion heating and / or hot exhaust gas heating, and the steam superheating cavity is disposed above the regenerative heating cavity.

[0016] In this embodiment, the vapor superheating chamber heats the vapor into superheated vapor at a certain temperature by means of the catalytic combustion heating and / or the hot waste gas heating, which is beneficial to improving the economic efficiency.

[0017] Furthermore, the vapor generator further includes a second electric heating device, the second electric heating device is connected to the catalytic combustion heating device group, and the steam pipe is sleeved on the second electric heating device.

[0018] In this embodiment, the second electric heating device can superheat the vapor, and after the vapor is superheated, it can reach the optimal hydrogen production catalytic reaction temperature, improving the hydrogen production efficiency.

[0019] Furthermore, both the first electric heating device and the second electric heating device include a plurality of electric heaters arranged at intervals, and each of the electric heaters includes: an electric heating base; an electric heating tube connected to the side of the electric heating base close to the steam pipe.

[0020] In this embodiment, the electric heating tube is arranged inside the steam pipe.

[0021] On the other hand, a hydrogen production method provided by an embodiment of the present invention includes the vapor generator, and the heating real-time adjustment method of the vapor generator includes: Step S1, when starting up, first start the first electric heating device and / or open the waste gas inlet to heat the liquid medium in the liquid storage chamber and the steam pipe to generate vapor; Step S2, start the second electric heating device to perform superheat treatment on the vapor; Step S3, detect the temperature of the vapor, and when the vapor temperature reaches the set upper threshold T0, turn off the electric heater and / or reduce the intake air volume at the waste gas inlet and the tail gas inlet; Step S4, open the tail gas inlet, introduce the tail gas into the combustion catalytic chamber, react with the combustion catalyst and heat the medium in the steam pipe; Step S5, detect the temperature of the vapor, and when the vapor temperature is lower than the set lower threshold T1, increase the vapor temperature.

[0022] In this embodiment, through the cooperation of various heating methods, the heating efficiency is effectively improved, the emission of the hot waste gas and the energy consumption are reduced, and the technical purposes of energy conservation, emission reduction, and environmental protection are achieved.

[0023] Furthermore, Step S5 specifically includes: when the vapor temperature is lower than the set lower threshold T1, turn on the first electric heating device and / or the second electric heating device and / or increase the intake air volume at the waste gas inlet and the tail gas inlet to increase the vapor temperature.

[0024] In this embodiment, due to the uncontrollability of the vapor temperature, when the vapor temperature is too low, various heating methods can be used for heating.

[0025] After adopting the technical solution of the present invention, the following technical effects can be achieved:

[0026] (1) By mixing and heating the liquid medium in the liquid storage cavity and the medium in the steam pipe through the first electric heating device and the catalytic combustion heating device group, the heating efficiency is improved and energy is saved.

[0027] (2) By making full use of the residual energy in the tail gas and the waste heat in the hot waste gas to heat the medium in the steam pipe, the utilization rate of energy is improved and the emission of the hot waste gas is reduced. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of a steam generator 100 provided by the first embodiment of the present invention;

[0029] Figure 2 is Figure 1 a cross-sectional view of the steam generator 100 in;

[0030] Figure 3 is a schematic structural diagram of an electric heater;

[0031] Figure 4 It is a schematic flow chart of a method for real-time adjustment of heating of a steam generator provided by the second embodiment of the present invention;

[0032] Description of the Reference Numerals:

[0033] 1 is a liquid storage cavity; 2 is a first electric heating device; 3 is a catalytic combustion heating device group; 4 is a steam pipe; 5 is a second electric heating device; 6 is a steam accommodation cavity; 31 is a tail gas inlet cavity; 32 is a combustion catalytic cavity; 33 is a heat storage heating cavity; 34 is a steam superheat cavity; 70 is an electric heating tube; 80 is an electric heating base; 100 is a heating device; 311 is a tail gas inlet; 321 is a waste gas inlet; 322 is a control valve; 323 is a temperature detection device; 331 is a fin; 332 is a feeding joint; 341 is a waste gas outlet. Detailed Embodiments

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035]

First Embodiment

[0036] See Figure 1 And Figure 2, which is a schematic structural diagram of the vapor generator 100 provided by the first embodiment of the present invention. The vapor generator 100 includes, for example: a liquid storage cavity 1, a first electric heating device 2, a catalytic combustion heating device group 3, and at least one steam pipe 4. Among them, the steam pipe 4 passes through the catalytic combustion heating device group 3 and is connected to the liquid storage cavity 1; the first electric heating device 2 is connected to the liquid storage cavity 1; the catalytic combustion heating device group 3 is stacked with the liquid storage cavity 1.

[0037] Specifically, the catalytic combustion heating device group 3 includes, for example: an exhaust gas inlet cavity 31. The exhaust gas inlet cavity 31 is arranged at the lower part of the catalytic combustion heating device group 3 and is connected to the liquid storage cavity 1. The exhaust gas inlet cavity 31 is provided with an exhaust gas inlet 311, and the exhaust gas is input into the vapor generator from the exhaust gas inlet 311 and evenly distributed in the exhaust gas inlet cavity 31.

[0038] Preferably, the exhaust gas inlet 311 includes an air inlet pipe, an exhaust gas inlet pipe, and a methanol inlet pipe. The air and the exhaust gas enter the exhaust gas inlet 311 after being preheated through the air inlet pipe and the exhaust gas inlet pipe respectively. And in order to improve the efficiency and heat release of catalytic combustion heating, part of the methanol is vaporized by overheating through the methanol inlet pipe and then introduced into the exhaust gas inlet 311 to be mixed with the air and the exhaust gas to obtain a mixed gas.

[0039] Further, a combustion catalytic cavity 32 is arranged in the catalytic combustion heating device group 3. The combustion catalytic cavity 32 is connected to the exhaust gas inlet cavity 31. The combustion catalytic cavity 32 is provided with an exhaust gas inlet 321 and a combustion catalyst; among them, a porous plate is arranged between the exhaust gas inlet cavity 31 and the combustion catalytic cavity 32, so that the mixed gas in the exhaust gas inlet cavity 31 can enter the combustion catalytic cavity 32 evenly to react with the combustion catalyst to generate a catalytic combustion heat release reaction, preventing the mixed gas from reacting with only a part of the combustion catalyst, and effectively improving the use efficiency of the catalytic combustion agent and the reaction heat release efficiency.

[0040] Preferably, the exhaust gas inlet 321 is provided with a control valve 322. The control valve 322 is arranged in the exhaust gas inlet 321 to control the flow rate of the hot exhaust gas at the exhaust gas inlet. The control valve can be an electric control valve or other devices that can realize the function of controlling the flow rate of the hot exhaust gas, and no limitation is made here.

[0041] Preferably, the exhaust gas inlet cavity 31 and the combustion catalytic cavity 32 can be set as one cavity, and the exhaust gas inlet 311, the exhaust gas inlet 321, and the combustion catalyst are all arranged in the cavity, which simplifies the structure of the catalytic combustion heating device 3.

[0042] Further, a regenerative heating chamber 33 is provided in the catalytic combustion heating device group 3. The regenerative heating chamber 33 is connected to the combustion catalytic chamber 32. A porous plate is provided between the combustion catalytic chamber 32 and the regenerative heating chamber 33. A regenerative block is provided in the regenerative heating chamber 33. Through holes matching with the steam pipes are provided on the regenerative block for inserting the steam pipes 4. When the hot waste gas passes through the porous plate between the combustion catalytic chamber 32 and the regenerative heating chamber 33 into the regenerative heating chamber 33, the regenerative block stores the heat in the hot waste gas for heating, preventing the hot waste gas from flowing away before the heat can be absorbed due to its fast flow rate. After using the regenerative block, the heat can be fully absorbed, and the heat of the hot waste gas is retained in the regenerative block. Then, the heat is evenly transferred to the medium to be heated in each steam pipe 4 through the regenerative block, realizing the reuse of the high-temperature waste gas and the uniformity of heat transfer. Preferably, regenerative balls, fins 331 and a feeding joint 332 can also be provided in the regenerative heating chamber 33. The regenerative balls in the regenerative heating chamber 33 can be replaced through the feeding joint 332. Among them, the regenerative balls and the fins 331 cooperate with each other. When the hot waste gas passes through the porous plate between the combustion catalytic chamber 32 and the regenerative heating chamber 33 into the regenerative heating chamber 33, the regenerative balls can extend the residence time of the hot waste gas in the regenerative heating chamber 33. After using the regenerative balls, the heat of the hot waste gas can be fully absorbed, and the heat of the hot waste gas is retained in the regenerative balls. Then, the heat is evenly transferred to the fins 331 outside each steam pipe 4 through the regenerative balls, and then the heat is evenly transferred to the medium to be heated in each steam pipe 4 through the fins 331 outside each steam pipe 4, realizing the reuse of the high-temperature waste gas and the uniformity of heat transfer.

[0043] Further, a steam superheating chamber 34 is provided in the catalytic combustion heating device group 3. The steam superheating chamber 34 is connected to the regenerative heating chamber 33. A porous plate is provided between the regenerative heating chamber 33 and the steam superheating chamber 34. The steam superheating chamber 34 is provided with an exhaust gas outlet 341. Among them, the steam superheating chamber 34 is superheated by means of electric heating and / or catalytic combustion heating and / or hot waste gas heating. Preferably, the exhaust gas outlet 341 and the feeding joint 332 can be configured as an integrated structure to improve the sealing performance of the steam generator.

[0044] Preferably, one or more of the tail gas inlet cavity 31, the combustion catalytic chamber 32, the regenerative heating chamber 33, and the steam superheating chamber 34 can be provided according to actual needs and stacked.

[0045] Preferably, the catalytic combustion heating device group 3 further includes a vacuum heat preservation housing and a heat insulation layer, and the vacuum heat preservation housing and the heat insulation layer cooperate with each other to improve the heating efficiency of the catalytic combustion heating device group 3.

[0046] Continue to refer toFigure 2 The liquid storage cavity 1 is arranged at one end of the steam generator. The liquid storage cavity 1 includes a first flange and a second flange. After the first flange and the second flange are connected, the liquid storage cavity 1 is formed. The first flange is provided with a liquid replenishing port, and a groove is provided on one side of the second flange close to the first flange. By arranging a depression in the middle of the first flange and / or the second flange to form a concave cavity, the liquid storage cavity 1 can be formed without adding new structures in the whole device. On the one hand, the cost is saved; on the other hand, the volume of the concave cavity formed by the depression of the flange is small, so that the solution can directly enter the concave cavity and then be circulated and heated, further reducing the volume of the whole device and not constituting a pressure vessel, thereby reducing the number of inspections.

[0047] Preferably, the steam generator 100 further includes a steam accommodating cavity 6. The steam accommodating cavity 6 is arranged at the other end of the steam generator. The steam accommodating cavity 6 is provided with a steam output port, and the steam output port is used for outputting the steam in the steam accommodating cavity 6, and a temperature detection device 322 is arranged at the steam output port for detecting the steam temperature.

[0048] For example, the catalytic combustion heating device group 3 is connected and arranged between the liquid storage cavity 1 and the steam accommodating cavity 6. One end of the steam pipe 4 is connected to the liquid storage cavity 1, and the other end is connected to the steam accommodating cavity 6. The steam pipe 4 passes through the catalytic combustion heating device group 3, and the steam pipe 4 communicates with the liquid storage cavity 1 and the steam accommodating cavity 6.

[0049] Preferably, the steam generator 100 further includes a liquid level detection device. The liquid level detection device is connected and arranged outside the steam generator, communicates with the liquid storage cavity 1 and the steam accommodating cavity 6, and is used for detecting the water level inside the steam generator.

[0050] Preferably, the steam generator 100 further includes a pressure detection device. The pressure detection device is connected and arranged outside the steam generator for detecting the pressure inside the steam generator to prevent production accidents such as explosion of the steam generator due to excessive pressure.

[0051] Continue to refer to Figure 2 The steam generator 100 further includes a first electric heating device 2 and a second electric heating device 5. The first electric heating device 2 and the second electric heating device 5 have the same structure and both include a plurality of electric heaters arranged at intervals. Refer to Figure 3 The electric heater includes an electric heating tube 70 and an electric heating base 80. The electric heating tube 70 is connected and arranged on the electric heating base 80; preferably, the electric heating tube 70 is a U-shaped heating element, or it can also be other structures that can realize the heating function, which is not limited here.

[0052] Furthermore, the first electric heating device 2 is connected to the liquid storage chamber 1, and each electric heater of the first electric heating device 2 passes through the liquid storage chamber 1 and is inserted into one end of the steam pipe 4 close to the liquid storage chamber 1; the second electric heating device 5 is arranged in the steam receiving chamber 6 and the steam superheating chamber 34, and each electric heater of the second electric heating device 5 passes through the steam receiving chamber 6 and is inserted into the steam pipe 4.

[0053] Preferably, the steam generator 100 can also use an electric heating tube 70 whose length can pass through the liquid storage chamber 1, the catalytic combustion heating device group 3 and the steam containing chamber 6, so that only the first electric heating device 2 or only the second electric heating device 5 can be set to electrically heat the entire steam generator.

[0054] [Second embodiment]

[0055] See also Figure 4 , which is a hydrogen production method provided by the second embodiment of the present invention, including the steam generator described in the first embodiment, and the real-time heating adjustment method of the steam generator includes, for example:

[0056] Step S1, when starting the machine, first start the first electric heating device, and / or open the exhaust gas inlet, heat the liquid medium in the liquid storage chamber and the steam pipe to generate steam;

[0057] Step S2, starting the second electric heating device, and / or opening the exhaust gas inlet, to superheat the steam;

[0058] Step S3, detecting the temperature of the steam, and when the steam temperature reaches a set upper threshold value T0, turning off the electric heater and / or reducing the air intake of the exhaust gas inlet;

[0059] Step S4, opening the exhaust gas inlet, introducing the exhaust gas into the combustion catalytic chamber, reacting and heating the medium in the steam pipe under the action of the combustion catalyst;

[0060] Step S5, detecting the temperature of the steam, and when the steam temperature is lower than a set lower limit threshold T1, increasing the steam temperature.

[0061] Combination Figures 1 to 3 The process of the real-time heating adjustment method of the steam generator is described in detail, specifically:

[0062] First, the liquid medium is introduced into the liquid storage chamber 1 through the liquid inlet, the liquid medium is partially located in the steam pipe 4, and the liquid medium should be less than 30L; preferably, the liquid level in the steam generator is detected by the liquid level detection device, and when the water level is too low, the liquid medium is transported to the liquid storage chamber 1 through the liquid inlet.

[0063] Then, start the first electric heating device 2 and open the waste gas inlet 321 to heat the liquid medium in the liquid storage cavity 1 and the steam pipe 4 to obtain the steam. The flow rate of the hot waste gas at the waste gas inlet 321 is controlled by a control valve 322, and the hot waste gas is an aggregate of all high-temperature waste discharge gases in the factory. Preferably, the pressure in the steam generator is detected by the pressure detection device to prevent production accidents such as explosion of the steam generator due to excessive pressure, and the pressure in the steam generator is regulated by adjusting the flow rate of the hot waste gas.

[0064] Then, the steam temperature in the steam storage cavity 6 is detected by the temperature detection device 323. If the steam temperature is lower than the preset steam output temperature, the second electric heating device 5 is started, and the waste gas inlet 321 is maintained in the open state to further heat the steam to obtain superheated steam. When the steam temperature reaches the preset steam output temperature, the second electric heating device 5 is turned off. Preferably, the superheating method can also use the hot waste gas heating method and / or the catalytic combustion heating method to superheat the steam.

[0065] Next, the steam temperature in the steam generator is detected. When the steam temperature reaches the upper limit threshold T0, the first electric heating device 2 is turned off and the tail gas is introduced into the steam generator through the tail gas inlet 311. A catalytic combustion exothermic reaction occurs under the action of the combustion catalyst to heat the medium in the steam pipe 4 and generate waste gas. The obtained waste gas is mixed with the hot waste gas introduced from the waste gas inlet 321 and enters the regenerative heating cavity 33, and heat is transferred to the steam pipe 4 through the regenerative balls and the fins 331 or through the regenerative block.

[0066] Finally, the steam temperature in the steam generator is continuously detected. When the steam temperature is lower than the set lower limit threshold T1, the first electric heating device 2 is turned on for heating, or the steam temperature is increased by increasing the intake amounts of the hot waste gas and the tail gas.

[0067] Of course, according to the real-time temperature and real-time pressure of the steam, the intake amounts of the hot waste gas and the tail gas can be increased or decreased, and the first electric heating device 2 can also be selected to be turned on or off to realize the real-time regulation of the steam temperature.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steam generator, characterized in that, Comprising: A liquid storage chamber, provided at one end of the vapor generator; At least one vapor pipe, one end of each said vapor pipe being connected to the liquid storage chamber; A heating device, comprising: A first electric heating device, connected to the liquid storage chamber, for heating the liquid medium in the liquid storage chamber; A catalytic combustion heating device group, provided at the other end of the vapor generator; Wherein, the vapor pipe passes through the catalytic combustion heating device group, and the catalytic combustion heating device group can heat the vapor pipe; The catalytic combustion heating device group at least comprises: An exhaust gas inlet cavity; A combustion catalytic cavity; A heat storage heating cavity; A vapor superheating cavity; Wherein, the exhaust gas inlet cavity, the combustion catalytic cavity, the heat storage heating cavity, and the vapor superheating cavity are stacked and arranged; The exhaust gas inlet cavity further comprises: An exhaust gas inlet, provided outside the vapor generator housing; Wherein, the exhaust gas inlet cavity is provided at the lower part of the catalytic combustion heating device group; The combustion catalytic cavity further comprises: An exhaust gas inlet, provided outside the vapor generator housing; A combustion catalyst, provided between the vapor generator and the vapor pipe; Wherein, the combustion catalytic cavity is provided above the exhaust gas inlet cavity; The catalytic combustion heating device group comprises a vacuum insulation housing and a heat insulation layer, and the vacuum insulation housing and the heat insulation layer cooperate with each other.

2. The steam generator according to claim 1, characterized in that, The catalytic combustion heating device group further comprises a heat storage heating cavity, and the heat storage heating cavity further comprises: Heat storage balls, provided between the vapor generator and the vapor pipe; Fins, provided outside each said vapor pipe; Or a heat storage block is provided in the heat storage heating cavity, and through holes matching the vapor pipes are provided on the heat storage block for inserting the vapor pipes; Wherein, the heat storage heating cavity is provided above the combustion catalytic cavity.

3. The steam generator according to claim 2, characterized in that, The catalytic combustion heating device group further comprises a vapor superheating cavity, and the vapor superheating cavity further comprises: An exhaust gas outlet, provided outside the vapor generator housing; Wherein, the vapor superheating cavity is superheated by means of electric heating and / or catalytic combustion heating and / or hot exhaust gas heating, and the vapor superheating cavity is provided above the heat storage heating cavity.

4. The steam generator according to claim 3, wherein, The vapor generator further comprises a second electric heating device, and the second electric heating device is provided in the vapor superheating cavity and inserted into the vapor pipe.

5. The steam generator according to claim 4, characterized in that, Both the first electric heating device and the second electric heating device comprise a plurality of electric heaters arranged at intervals, and each of said electric heaters comprises: An electric heating base; An electric heating pipe, connected and provided on the side of the electric heating base close to the vapor pipe.

6. A hydrogen production method, characterized in that, The hydrogen production method is applied to the vapor generator as claimed in claim 5, and the heating real-time adjustment method of the vapor generator comprises: Step S1, when starting up, first start the first electric heating device, and / or open the exhaust gas inlet, and heat the liquid medium in the liquid storage chamber and the vapor pipe to generate vapor; Step S2, start the second electric heating device, and / or open the exhaust gas inlet, and perform superheat treatment on the vapor; Step S3, detect the temperature of the vapor, and when the vapor temperature reaches the set upper limit threshold T0, then turn off the first electric heating device and / or reduce the intake air volume of the exhaust gas inlet; Step S4: Open the tail gas inlet, introduce the tail gas into the combustion catalytic chamber, and react under the action of the combustion catalyst to heat the medium in the steam pipe. Step S5: Detect the temperature of the steam. When the steam temperature is lower than the set lower threshold T1, increase the steam temperature.

7. The hydrogen production method according to claim 6, characterized in that, The specific content of step S5 includes: When the steam temperature is lower than the set lower threshold T1, turn on the first electric heating device and / or the second electric heating device and / or increase the intake air volume at the waste gas inlet and the tail gas inlet to increase the steam temperature.

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