An electrically heated vapor generator and hydrogen production system

Abstract

The application provides an electric heating vapor generator and a hydrogen production system. The electric heating vapor generator is used for preparing a vapor, and the electric heating vapor generator comprises a generator body, a vapor material containing cavity and a vapor containing cavity are arranged in the generator body, a vapor material pipeline is arranged outside the generator body and is communicated with the vapor material containing cavity, the vapor material pipeline is used for conveying vapor material to the vapor material containing cavity, a first heating piece is arranged at a position of the generator body close to the vapor containing cavity and is used for heating the vapor material containing cavity and the vapor containing cavity, and a second heating piece is arranged at a position of the generator body close to the vapor material containing cavity and is used for heating the vapor material containing cavity. The application can solve the technical problem that the temperature cannot be accurately controlled when methanol solution is used to prepare a vapor, thereby affecting the preparation efficiency of the vapor.

Description

Technical Field

[0001] This invention relates to the field of chemical equipment technology, and more specifically, to an electrically heated steam generator and a hydrogen production system. Background Technology

[0002] Hydrogen, as a new energy fuel, has demonstrated a vast and potential market. How to plan for and technologically prepare for this inevitable development will be a matter of paramount importance. Choosing advanced technologies and rational methods to produce and apply hydrogen to achieve maximum economic and environmental benefits is the future development trend.

[0003] Currently, methanol is widely used to produce hydrogen. Methanol-to-hydrogen production refers to the process of producing hydrogen by heating a methanol solution under specific temperature and pressure conditions, using methanol as a raw material. The methanol vapor is then converted into hydrogen under the action of a hydrogen-producing catalyst. In existing technologies, the vapor production process mainly uses combustion catalysis to heat the methanol solution. This involves the reaction of the exhaust gas with a combustion catalyst to generate heat, which is then used to heat the methanol solution to produce vapor. However, the heat generated by combustion catalysis is affected by the content of hydrocarbons and nitrogen compounds in the exhaust gas. If the hydrocarbon and nitrogen content is low, the heat generated by the combustion of the exhaust gas is relatively low, making it difficult to precisely control the heating temperature of the methanol solution and ultimately affecting the efficiency of vapor production. Summary of the Invention

[0004] This invention solves the technical problem of inaccurate temperature control when preparing vapor from methanol solution, which affects the efficiency of vapor preparation.

[0005] To address the aforementioned problems, this invention provides an electrically heated steam generator for preparing steam. The electrically heated steam generator includes: a generator body with a steam material receiving cavity and a steam receiving cavity inside; a steam material pipe located outside the generator body and communicating with the steam material receiving cavity, the steam material pipe being used to deliver steam material to the steam material receiving cavity; a first heating element located on the generator body near the steam receiving cavity, used to heat the steam material receiving cavity and the steam receiving cavity; and a second heating element located on the generator body near the steam material receiving cavity, used to heat the steam material receiving cavity.

[0006] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting up a first heating element and a second heating element, sufficient heat can be provided to the methanol solution, achieving the purpose of precise temperature control. When using electric heating to prepare vapor, the internal structure of the hydrogen production device is simplified, and the hydrogen production efficiency is further improved.

[0007] Furthermore, in this invention, the steam material pipeline includes: a steam material conveying pipe, which is connected to a steam material conveying device; a connecting pipe, which is connected to the steam material conveying pipe; a first pipeline, one end of which is connected to the connecting pipe and the other end of which is connected to the steam material receiving cavity; and a second pipeline, one end of which is connected to the connecting pipe and the other end of which is connected to the steam material receiving cavity; wherein, the liquid steam material after gas-liquid separation is conveyed to the steam material receiving cavity by the second pipeline; and the gaseous steam material after gas-liquid separation is conveyed to the steam material receiving cavity by the first pipeline.

[0008] Compared with existing technologies, the technical effects achieved by this solution are as follows: When conveying steam material, the steam material is first conveyed into the steam material conveying pipe. Further, the steam material flows from the steam material conveying pipe into the connecting pipe. The gaseous portion of the steam material flows upward into the first pipe, while the liquid portion flows downward into the second pipe. Finally, the gaseous portion of the steam material flows into the steam material receiving cavity through the upper first pipe, while the liquid portion flows into the steam material receiving cavity through the lower second pipe. The arrangement of the first and second pipes achieves gas-liquid separation of the steam material and also improves the heat absorption efficiency of the steam material, further enhancing the efficiency of steam production by the electric heating steam generator.

[0009] Furthermore, in this invention, the steam material pipeline also includes a drain pipe; one end of the drain pipe is connected to the steam material receiving cavity, and the other end is connected to the steam recovery device, and the drain pipe can discharge the steam material in the steam material receiving cavity to the outside.

[0010] Compared with existing technologies, the technical effects achieved by this solution are as follows: It is understandable that after the electric heating steam generator stops working, residual steam material will still remain in the steam material receiving cavity and steam material pipeline. If this residual steam material is not discharged in time, it will cause certain damage to the electric heating steam generator and steam material pipeline. After the electric heating steam generator stops working, by setting up a drain pipe, the residual steam material in the steam material receiving cavity can be discharged in time, thereby reducing the damage of residual steam material to the electric heating steam generator and steam material pipeline, and effectively improving the service life of the electric heating steam generator and steam material pipeline.

[0011] Furthermore, in this invention, the second pipe is arranged parallel to the first pipe, and the first pipe is located above the second pipe in the vertical direction.

[0012] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the parallel arrangement of the first and second pipes achieves the purpose of stably delivering steam material to the steam material receiving cavity, and further improves the efficiency of steam generator in producing steam.

[0013] Furthermore, in this invention, both the first heating element and the second heating element are electric heaters.

[0014] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the use of an electric heater also facilitates the control of the temperature inside the steam containment chamber, thereby improving the efficiency of steam production by the electric heating steam generator.

[0015] Furthermore, an embodiment of the present invention provides a hydrogen production system, which is equipped with the aforementioned electrically heated steam generator; the hydrogen production system further includes: a hydrogen reactor connected to the electrically heated steam generator for producing hydrogen; a gas-liquid separator connected to the hydrogen reactor; and a buffer tank connected to the gas-liquid separator; wherein the electrically heated steam generator, the hydrogen reactor, the gas-liquid separator, and the buffer tank are connected in sequence.

[0016] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the hydrogen reactor enables the preparation of hydrogen. The steam generated by the electrically heated steam generator is introduced into the hydrogen reactor, and hydrogen is finally produced in the hydrogen reactor. After the hydrogen is separated into gas and liquid by the gas-liquid separator, pure hydrogen is finally obtained.

[0017] Furthermore, in this invention, the hydrogen reactor includes: a reactor body, the reactor body having a hydrogen containment chamber inside; a vapor input pipe, one end of which is connected to the vapor containment chamber and the other end of which is connected to the hydrogen containment chamber, for transporting vapor inside the vapor containment chamber to the hydrogen containment chamber; and a first hydrogen output pipe, one end of which is connected to the vapor containment chamber and the other end of which is connected to a gas-liquid separator.

[0018] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the steam input pipe enables the supply of steam to the hydrogen reactor. After the steam enters the hydrogen containment chamber from the steam input pipe, hydrogen is generated inside the reactor body and under the combined action of the hydrogen production catalyst. The generated hydrogen is discharged from the first hydrogen output pipe. The steam input pipe and the first hydrogen output pipe achieve the purpose of transporting steam and hydrogen, ultimately improving the hydrogen production efficiency of the hydrogen production system.

[0019] Furthermore, in this invention, the hydrogen reactor further includes: at least one baffle plate, the at least one baffle plate being disposed in the hydrogen containing cavity, and having a plurality of gas flow holes formed on the at least one baffle plate; wherein, a hydrogen production catalyst is disposed on the at least one baffle plate.

[0020] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the hydrogen production catalyst can increase the hydrogen production reaction rate, promote the hydrogen production reaction to proceed as positively as possible, generate more hydrogen, and thus improve the hydrogen conversion rate.

[0021] Furthermore, in this invention, the gas-liquid separator includes: a first hydrogen input pipe, which is disposed in the gas-liquid separator and connected to a first hydrogen output pipe; and a second hydrogen output pipe, one end of which is connected to the gas-liquid separator and the other end of which is connected to a buffer tank.

[0022] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the setting of the first hydrogen input pipe realizes the purpose of supplying hydrogen to the gas-liquid separator. After gas-liquid separation, pure hydrogen can be obtained, thereby improving the hydrogen conversion rate.

[0023] Furthermore, in this invention, the buffer tank includes: a buffer chamber for storing hydrogen; a second hydrogen inlet pipe, one end of which is connected to the buffer chamber and the other end of which is connected to a second hydrogen outlet pipe; and a third hydrogen outlet pipe, one end of which is connected to the buffer chamber.

[0024] Compared with existing technologies, the technical effects achieved by this solution are as follows: the buffer chamber enables the collection of hydrogen gas, and by also providing a stable concentration of hydrogen gas, the efficiency of hydrogen gas utilization is improved.

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

[0026] i) By setting up the first heating element and the second heating element, sufficient heat can be provided to the methanol solution, achieving the purpose of precise temperature control. When using electric heating to prepare vapor, the internal structure of the hydrogen production device is simplified, and the hydrogen production efficiency is further improved.

[0027] ii) When conveying steam material, the steam material is first conveyed into the steam material conveying pipe. Further steam material flows from the steam material conveying pipe into the connecting pipe. The gaseous portion of the steam material flows upward into the first pipe, while the liquid portion flows downward into the second pipe. Finally, the gaseous portion of the steam material flows into the steam material receiving cavity through the upper first pipe, while the liquid portion flows into the steam material receiving cavity through the lower second pipe. The arrangement of the first and second pipes achieves gas-liquid separation of the steam material and also improves the heat absorption efficiency of the steam material, further enhancing the efficiency of steam production by the electric heating steam generator.

[0028] iii) The steam input pipe is designed to deliver steam to the hydrogen reactor. After the steam enters the hydrogen containment chamber through the steam input pipe, hydrogen is generated inside the reactor body and under the combined action of the hydrogen production catalyst. The generated hydrogen is discharged from the first hydrogen output pipe. The steam input pipe and the first hydrogen output pipe are designed to deliver steam and hydrogen, thereby improving the hydrogen production efficiency of the hydrogen production system. Attached image description:

[0029] Figure 1 This is a schematic diagram of the structure of the electrically heated steam generator 50 provided in the first embodiment of the present invention.

[0030] Figure 2 for Figure 1 Top view.

[0031] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0032] Figure 4 This is a schematic diagram of the structure of the hydrogen production system 100 provided in the second embodiment of the present invention.

[0033] Figure 5 for Figure 4 A schematic diagram of the structure of the hydrogen reactor 60.

[0034] Figure 6 for Figure 5 Top view.

[0035] Figure 7 for Figure 6 A cross-sectional view along the BB direction.

[0036] Figure 8 for Figure 4 A schematic diagram of the structure of the gas-liquid separator 70.

[0037] Figure 9 for Figure 4 A schematic diagram of the structure of the intermediate buffer tank 80.

[0038] Figure 10 for Figure 9 Top view.

[0039] Figure 11 for Figure 10 A cross-sectional view along the CC direction.

[0040] Explanation of reference numerals in the attached figures:

[0041] 50-Steam generator; 10-Generator body; 11-Steam output pipe; 12-Steam material receiving cavity; 13-Steam receiving cavity; 20-Steam material pipeline; 21-Connecting pipe; 22-First pipeline; 23-Second pipeline; 24-Steam material conveying pipe; 25-Drainage pipeline; 30-First heating element; 31-Second heating element; 40-First level gauge;

[0042] 100-Hydrogen production system; 60-Hydrogen reactor; 61-Reactor body; 62-Steam input pipe; 63-Third heating element; 64-First hydrogen output pipe; 65-Hydrogen containment chamber; 66-Baffle; 70-Gas-liquid separator; 71-First hydrogen input pipe; 72-Second hydrogen output pipe; 73-Second level gauge; 80-Buffer tank; 81-Second hydrogen input pipe; 82-Third hydrogen output pipe; 83-Buffer chamber. Detailed Implementation

[0043] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] [First Embodiment]

[0045] See Figures 1-3 The first embodiment of the present invention provides an electrically heated steam generator 50, which is used to generate steam. The electrically heated steam generator 50 includes, for example, a generator body 10, a steam output pipe 11, and a steam material pipe 20. The generator body 10 is provided with a steam material receiving cavity 12 and a steam receiving cavity 13. The steam receiving cavity 13 is located above the steam material receiving cavity 12, and the steam material receiving cavity 12 is used to store steam material, while the steam receiving cavity 13 stores steam. The steam output pipe 11 can transport the steam generated by the electrically heated steam generator 50 to the outside.

[0046] Furthermore, the steam material pipe 20 is located outside the generator body 10 and is connected to the steam material receiving cavity 12. The steam material pipe 20 is used to transport steam material to the steam material receiving cavity 12. The steam output pipe 11 is located above the generator body 10 and is connected to the steam receiving cavity 13. The steam output pipe 11 can transport the steam inside the steam receiving cavity 13 to the outside.

[0047] Preferably, the electric heating steam generator 50 further includes: a first heating element 30, a second heating element 31, and a first level gauge 40; wherein, the first heating element 30 is disposed above the generator body 10, and the first heating element 30 can simultaneously heat the steam material inside the steam material receiving cavity 12 and the steam inside the steam receiving cavity 13; the second heating element 31 is disposed below the generator body 10, and the second heating element 31 is used to heat the steam material inside the steam material receiving cavity 12; wherein, both the first heating element 30 and the second heating element 31 are electric heaters.

[0048] It should be noted that the vapor material used in this invention can be water, methanol, a mixture of methanol and water, or other alcohols or mixtures of other alcohols and water.

[0049] Furthermore, the steam material pipeline 20 includes: a steam material conveying pipe 24, a first pipe 22, a second pipe 23, and a connecting pipe 21; wherein one end of the steam material conveying pipe 24 is connected to a steam material conveying device (not shown in the figure), and the other end of the steam material conveying pipe 24 is connected to the connecting pipe 21; the steam material conveying device can convey steam material through the steam material conveying pipe 24 to the connecting pipe 21; one end of the second pipe 23 is connected to the connecting pipe 21, and the other end is connected to the steam material receiving cavity 12; one end of the first pipe 22 is also connected to the connecting pipe 21, and the other end is similarly connected to the steam material receiving cavity 12, the first pipe 22 and the second pipe 23 are located at the upper and lower ends of the steam material receiving cavity 12; wherein, through the first pipe 22 and the second pipe 23, gaseous and liquid steam material can be conveyed to the steam material receiving cavity 12.

[0050] Specifically, when conveying steam material, the steam material is first conveyed to the steam material conveying pipe 24. The steam material then flows from the steam material conveying pipe 24 into the connecting pipe 21. The gaseous part of the steam material flows upward into the first pipe 22, and the liquid part of the steam material flows downward into the second pipe 23. Finally, the gaseous part of the steam material flows into the steam material receiving cavity 12 through the upper first pipe 22, while the liquid part of the steam material flows into the steam material receiving cavity 12 through the lower second pipe 23.

[0051] Preferably, the steam material pipeline 20 further includes a drain pipe 25; one end of the drain pipe 25 is connected to the steam material receiving cavity 12, and the other end is connected to a steam recovery device (not shown in the figure). The drain pipe 25 can discharge the steam material in the steam material receiving cavity 12 to the outside. It is understood that after the electric heating steam generator 50 stops working, there will still be residual steam material in the steam material receiving cavity 12 and the steam material pipeline 20. If it is not discharged in time, it will cause certain damage to the electric heating steam generator 50 and the steam material pipeline 20. After the electric heating steam generator 50 stops working, by setting the drain pipe 25, the steam material left in the steam material receiving cavity 12 can be discharged in time, thereby reducing the damage of residual steam material to the electric heating steam generator 50 and the steam material pipeline 20, and effectively improving the service life of the electric heating steam generator 50 and the steam material pipeline 20.

[0052] [Second Embodiment]

[0053] See Figure 4 The second embodiment of the present invention provides a hydrogen production system 100, wherein the hydrogen production system 100 is used to produce hydrogen gas, and the hydrogen production system 100 is provided with the electrically heated steam generator 50 described in the above embodiment. The hydrogen production system 100 also includes a hydrogen reactor 60, a gas-liquid separator 70, and a buffer tank 80. The electrically heated steam generator 50, the hydrogen reactor 60, the gas-liquid separator 70, and the buffer tank 80 are connected in sequence. The steam produced by the electrically heated steam generator 50 is transported to the hydrogen reactor 60, and hydrogen gas is produced under the action of the hydrogen production catalyst in the hydrogen reactor 60. At this time, the hydrogen gas produced in the hydrogen reactor 60 will be mixed with impurities such as water, methanol, and carbon dioxide, that is, the hydrogen gas produced by the hydrogen reactor 60 is crude hydrogen. The crude hydrogen in the hydrogen reactor 60 is further transported to the gas-liquid separator 70 for filtration, thereby realizing the separation between gas and liquid.

[0054] Preferred, see Figures 5-7 The hydrogen reactor 60 includes a reactor body 61, a steam inlet pipe 62, and a first hydrogen outlet pipe 64. The reactor body 61 has a hydrogen storage chamber 65 inside. One end of the steam inlet pipe 62 is connected to the hydrogen storage chamber 65, and the other end is connected to the steam storage chamber 13. Specifically, the steam inlet pipe 62 is connected to the steam outlet pipe 11 of the electrically heated steam generator 50. The hydrogen produced inside the electrically heated steam generator 50 can be transported to the hydrogen storage chamber 65 through the steam outlet pipe 11 and the steam inlet pipe 62. The hydrogen storage chamber 65 is filled with a hydrogen-producing catalyst (not shown in the figure) that can react with the steam. The first hydrogen outlet pipe 64 is connected to the hydrogen storage chamber 65 and is used to transport the hydrogen produced by the hydrogen reactor 60 to the gas-liquid separator 70.

[0055] Furthermore, the steam inlet pipe 62 and the first hydrogen outlet pipe 64 are located outside the reactor body 61. The steam generated by the electrically heated steam generator 50 is transported to the hydrogen storage chamber 65 through the steam outlet pipe 11 and the steam inlet pipe 62. Furthermore, at a certain temperature, the steam can react with the hydrogen production catalyst in the hydrogen storage chamber 65 to finally generate hydrogen.

[0056] Preferably, the hydrogen reactor 60 further includes: a third heating element 63; the third heating element 63 is disposed on the reactor body 61, and the third heating element 63 is used to heat the hydrogen receiving chamber 65. When steam is delivered to the hydrogen receiving chamber 65, the steam and the hydrogen production catalyst will generate hydrogen under the heating of the third heating element 63; wherein, the steam input pipe 62 is disposed at one end of the reactor body 61 near the third heating element 63, that is, the steam input pipe 62 is disposed above the reactor body 61, and the first hydrogen output pipe 64 is disposed at one end of the reactor body 61 away from the steam input pipe 62, that is, the first hydrogen output pipe 64 is disposed below the reactor body 61.

[0057] Furthermore, in this invention, the third heating element 63 is an electric heater. Of course, the third heating element 63 can also be other heating devices, as long as they can heat the hydrogen containment cavity 65, and are not limited to the electric heater in this invention.

[0058] It should be noted that since the steam input pipe 62 is located above the reactor body 61, when the steam is delivered to the hydrogen reactor 60 by the electric heating steam generator 50, hydrogen is generated under the heating of the third heating element 63. At the same time, under the action of pressure, the hydrogen is squeezed to the bottom of the hydrogen receiving cavity 65, and the finally prepared hydrogen is discharged to the outside through the first hydrogen output pipe 64.

[0059] Preferably, the hydrogen reactor 60 is further provided with at least one baffle 66; the baffle 66 is disposed in the hydrogen receiving cavity 65, and a plurality of gas flow holes (not shown in the figure) are opened on the baffle 66, through which vapor and hydrogen can flow in the hydrogen receiving cavity 65; at the same time, the hydrogen production catalyst is disposed on the baffle 66. Specifically, when the vapor enters the hydrogen receiving cavity 65 from top to bottom, the vapor reacts with the hydrogen production catalyst under the heating of the third heating element 63 to produce hydrogen, and the hydrogen flows through the gas flow holes provided in the baffle 66 to the bottom of the hydrogen receiving cavity 65, and is finally discharged to the outside through the first hydrogen output pipe 64.

[0060] Preferably, the hydrogen produced by the hydrogen reactor 60 is transported to the gas-liquid separator 70. To ensure sufficient separation between the gas and liquid in the gas-liquid separator 70, a heat exchange structure is provided between the hydrogen reactor 60 and the gas-liquid separator 70. The heat exchange structure cools the hydrogen produced by the hydrogen reactor 60 to a normal temperature. The heat exchange structure includes a plate heat exchanger, a cold air fan, etc. Under the action of the plate heat exchanger and the cold air fan, the hydrogen is sufficiently cooled to a normal temperature, thereby improving the gas-liquid separation efficiency of the gas-liquid separator 70.

[0061] Preferred, see Figure 8 The gas-liquid separator 70 is equipped with a first hydrogen inlet pipe 71 and a second hydrogen outlet pipe 72. The first hydrogen inlet pipe 71 is connected to the first hydrogen outlet pipe 64 of the hydrogen reactor 60. One end of the second hydrogen outlet pipe 72 is connected to the gas-liquid separator 70, and the other end is connected to the buffer tank 80. The hydrogen after gas-liquid separation in the gas-liquid separator 70 is transported to the buffer tank 80 through the second hydrogen outlet pipe 72. The separated liquid is further recycled. The gas-liquid separator 70 is also equipped with a second liquid level gauge 73, which is located on the outside of the gas-liquid separator 70 and is used to detect the liquid content in the gas-liquid separator 70. The detection of the liquid in the gas-liquid separator 70 can ensure the gas-liquid separation efficiency of the gas-liquid separator 70.

[0062] Preferred, see Figures 9-11 The buffer tank 80 is equipped with a buffer chamber 83, which is used to store hydrogen. By setting up the buffer tank 80, the hydrogen is buffered, thereby ensuring the efficiency of the hydrogen production system and further improving the user experience.

[0063] Furthermore, the buffer tank 80 is equipped with a second hydrogen inlet pipe 81 and a third hydrogen outlet pipe 82, which are located outside the buffer tank 80. One end of the second hydrogen inlet pipe 81 is connected to the buffer chamber 83, and the other end is connected to the second hydrogen outlet pipe 72 of the gas-liquid separator 70. The hydrogen gas separated by the gas-liquid separator 70 is transported to the buffer chamber 83 through the second hydrogen outlet pipe 72 and the second hydrogen inlet pipe 81. The third hydrogen outlet pipe 82 is connected to the buffer chamber 83 and can discharge the hydrogen gas inside the buffer chamber 83 to the outside of the buffer tank 80 for further utilization through a hydrogen storage device. At the same time, the second hydrogen inlet pipe 81 is located above the buffer tank 80, and the third hydrogen outlet pipe 82 is located below the buffer tank 80.

[0064] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An electrically heated steam generator, wherein the electrically heated steam generator is used to prepare steam, characterized in that, include: The generator body (10) has a steam material receiving cavity (12) and a steam receiving cavity (13) inside. A steam material pipe (20) is provided outside the generator body (10) and communicates with the steam material receiving cavity (12). The steam material pipe (20) is used to transport steam material to the steam material receiving cavity (12). The first heating element (30) is disposed on the generator body (10) near the steam receiving cavity (13) for heating the steam material receiving cavity (12) and the steam receiving cavity (13); The second heating element (31) is disposed on the generator body (10) near the steam material receiving cavity (12) for heating the steam material receiving cavity (12); The steam material conduit (20) includes: A steam material conveying pipe (24) is connected to a steam material conveying device; Connecting pipe (21), which is connected to steam material conveying pipe (24); The first pipe (22) has one end connected to the connecting pipe (21) and the other end connected to the steam material receiving cavity (12). The second pipe (23) has one end connected to the connecting pipe (21) and the other end connected to the steam material receiving cavity (12). The liquid vapor material after gas-liquid separation is transported to the vapor material receiving cavity (12) by the second pipe (23); the gas vapor material after gas-liquid separation is transported to the vapor material receiving cavity (12) by the first pipe (22); the second pipe (23) is arranged parallel to the first pipe (22), and the first pipe (22) is located above the second pipe (23) in the vertical direction.

2. The electrically heated steam generator according to claim 1, characterized in that, The steam material pipeline (20) also includes: Drainage pipe (25); one end of the drainage pipe (25) is connected to the steam material receiving cavity (12), and the other end is connected to the steam recovery device. The drainage pipe (25) can discharge the steam material in the steam material receiving cavity (12) to the outside.

3. The electrically heated steam generator according to claim 1, characterized in that, Both the first heating element (30) and the second heating element (31) are electric heaters.

4. A hydrogen production system, characterized in that, The hydrogen production system is equipped with an electrically heated steam generator (50) as described in any one of claims 1-3; the hydrogen production system (100) further includes: A hydrogen reactor (60) connected to the electrically heated steam generator (50) for producing hydrogen; A gas-liquid separator (70) is connected to a hydrogen reactor (60); Buffer tank (80), the buffer tank (80) is connected to the gas-liquid separator (70); The electric heating steam generator (50), the hydrogen reactor (60), the gas-liquid separator (70), and the buffer tank (80) are connected in sequence.

5. The hydrogen production system according to claim 4, characterized in that, The hydrogen reactor (60) includes: The reactor body (61) has a hydrogen containment chamber (65) inside. A vapor input pipe (62) is connected at one end to the vapor receiving chamber (13) and at the other end to the hydrogen receiving chamber (65) for transporting the vapor inside the vapor receiving chamber (13) to the hydrogen receiving chamber (65). The first hydrogen output pipe (64) is connected at one end to the vapor containment chamber (13) and at the other end to the gas-liquid separator (70).

6. The hydrogen production system according to claim 5, characterized in that, The hydrogen reactor (60) further includes: At least one partition (66) is disposed in the hydrogen containment cavity (65), and a plurality of gas flow holes are provided on the at least one partition (66); A hydrogen production catalyst is provided on at least one of the partition plates.

7. The hydrogen production system according to claim 5, characterized in that, The gas-liquid separator (70) includes: The first hydrogen input pipe (71) is disposed in the gas-liquid separator (70) and connected to the first hydrogen output pipe (64). The second hydrogen output pipe (72) has one end connected to the gas-liquid separator (70) and the other end connected to the buffer tank (80).

8. The hydrogen production system according to claim 7, characterized in that, The buffer tank (80) includes: A buffer chamber (83) is provided for storing hydrogen. The second hydrogen input pipe (81) has one end connected to the buffer chamber (83) and the other end connected to the second hydrogen output pipe (72). The third hydrogen output pipe (82) has one end connected to the buffer chamber (83).

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