Rapid fluid heating device for producing hydrogen by electrolyzing water and process method of rapid fluid heating device

Abstract

According to the rapid fluid heating device for hydrogen production through water electrolysis, the rapid fluid heating device is a conduction type fluid heating device, and a plurality of honeycomb porous electrode tubes are arranged in the fluid heating device in a conduction type; the outer sides of the plurality of honeycomb porous electrode tubes are transversely and horizontally arranged in the fluid heating device in a suspended and fixed manner through baffle plates, so that the fluid heating device can be effectively applied to an electrolytic hydrogen production scene needing fluid heating; leakage of open fire, electric sparks and the like is avoided, and the intrinsic safety of hydrogen production equipment is improved; meanwhile, the heat efficiency is high, the heating speed is high, and the hot start time of an equipment system is greatly shortened; according to the process and the system equipment, the heating efficiency is improved, the defects that a traditional heating mode is low in efficiency and long in heating time are overcome, energy consumption and carbon emission are reduced, and economic benefits are improved; the device can be adapted to quick start and stop of an electrolytic hydrogen production equipment system, and fluctuation caused by renewable energy sources such as wind and light can be effectively inhibited.

Description

Technical Field

[0001] This article belongs to the technical field of hydrogen production by water electrolysis, and specifically relates to a rapid fluid heating device and a process method for hydrogen production by water electrolysis. Background Art

[0002] With the development of human production activities and industry, greenhouse gas emissions are increasing day by day. The main cause of global warming is the large amount of greenhouse gases emitted into the atmosphere, among which CO2 is the most emitted greenhouse gas. Therefore, in order to prevent global warming and the occurrence of extreme weather caused by it, carbon reduction and cost reduction have become the mainstream of the energy industry.

[0003] Green hydrogen produced from green electricity, as an absolutely clean energy, has unparalleled advantages over other fossil energy sources, and does not produce greenhouse gases such as CO2; therefore, electrolytic hydrogen production equipment and systems have been rapidly developed, and hydrogen production equipment has different degrees of mismatch between electrolyte temperature and the optimal reaction temperature of the electrolyzer during the start-up and shutdown process. What's more, it takes a long time for the electrolyte to reach the minimum reaction temperature during the hydrogen production process. This also causes the problem of untimely and mismatched hydrogen production power in the power supply process of hydrogen production equipment based on wind and light. For example, when photovoltaic power generation has reached more than 50% of the power generation load, it still takes more than 2 hours for the electrolyte to reach the minimum reaction temperature of the electrolyzer, which results in a waste of green electricity (because the temperature is insufficient and it cannot be started at a higher power).

[0004] The traditional start-stop method uses electrolyte insulation, which requires a huge insulation device, which is both expensive and occupies a large area. The currently widely used electric heating system will cause corrosion of the heating tube during operation. In severe cases, leakage, fuse fusing (which requires frequent replacement, affecting production efficiency), electric sparks and other problems may occur, endangering the safety of the hydrogen production system. Steam heating is used, and its heating pipes will produce hydrogen corrosion or steam leakage problems over time. The cost and space are also high, and the use of steam boilers will cause other safety problems. In summary, how to achieve safe, reliable and rapid heating of the reaction fluid has become a very urgent issue.

[0005] Therefore, in view of the problems arising from the heating and insulation measures used in the current electrolytic hydrogen production equipment and the matching of fluctuating power supplies, a system process method and system equipment of an electromagnetic heating device are proposed. Summary of the invention

[0006] In order to solve the above problems, this paper proposes a rapid heating fluid device for electrolyzing water to produce hydrogen. The rapid heating fluid device is a conductive heating fluid device. The internal conductive heating fluid device is provided with a plurality of honeycomb porous electrode tubes. The outer sides of the plurality of honeycomb porous electrode tubes are suspended horizontally and fixedly arranged inside the heating fluid device through baffles. The baffles are fixed to the inner wall surface of the heating fluid device. The surface of the baffles is equidistantly provided with a plurality of electrode tube positioning and fixing holes. The baffles include single-bow baffles and double-bow baffles. The double-bow baffles are arranged at the center and both ends of the heating fluid device. Single-bow baffles are equidistantly arranged on the upper and lower sides between two adjacent double-bow baffles. The electrode spacing L of the center distance of the adjacent motor tube positioning and fixing holes is 5-20cm. The electrode angle O of the center angle of the adjacent electrode tube positioning and fixing holes is 30-90°. The outer side of the honeycomb porous electrode tube is connected to the electrode tube positioning and fixing hole through the electrode tube fixing outer ring. The interior of the honeycomb porous electrode tube is provided with a number of honeycomb combined hexagonal heating electrode modules. The center of each heating electrode module is connected with an inner flow channel hole. The thickness d of the heating electrode module is 0.1-1.0mm, and the inner diameter r of the inner flow channel hole is 5-10mm. The outer side of the combined hot electrode module is embedded in the inner side of the electrode fixing outer ring. It can be used alone or in coordination, with small footprint, large processing capacity, high processing efficiency, low operating energy consumption, good environmental adaptability and system compatibility. It can be widely used in different complex working conditions and external environments, convenient skid installation, and low installation cost. The heating time is short, the energy conversion efficiency is high, the liquid is directly heated, the intermediate heat transfer process used in traditional heating is reduced, and the heat utilization efficiency is improved.

[0007] The outside of the heating fluid device is provided with an electromagnetic generating coil winding, the outside of the electromagnetic generating coil winding is provided with thermal insulation cotton, the inside of the thermal insulation cotton is embedded and wrapped with an inner lining pipe, the electromagnetic generating coil winding is a hollow inner cooling fluid coil winding, which is used to cool the electromagnetic coil (tube), and the cooling fluid flow rate is controlled and interlocked with the electromagnetic frequency and the pipeline fluid temperature. There is no need for all-round heating fluid of traditional heating equipment, which is time-consuming, labor-intensive, slow to start, and wastes energy. It heats a small amount of liquid that needs to enter the reaction to meet the needs of rapid start-up of electrolytic cells, etc., especially in the use of large-scale electrolytic cells, the power saving or rapid start-up effect is more obvious.

[0008] A high-frequency magnetic field heating zone and a low-frequency magnetic field heating zone are provided inside the heating fluid device. The high-frequency magnetic field heating zone is provided on both sides of the double-bow baffles at both ends, and the low-frequency magnetic field heating zone is provided on both sides of the double-bow baffles in the middle. Sensors are provided on the outsides of the high-frequency magnetic field heating zone and the low-frequency magnetic field heating zone. The sensors are connected to the system control cabinet through signal cables. The system control cabinet is connected to the electromagnetic generating coil winding control of the high-frequency magnetic field heating zone and the low-frequency magnetic field heating zone through electromagnetic coil wires. A multi-section arrangement is adopted to couple the variable frequency magnetic field to perform all-round heating. The heating is uniform and controllable, and continuous feeding is possible. The PLC temperature control and interlocking system is adopted, which makes the operation more convenient.

[0009] The shape of the single-bow baffle is a semicircular baffle surface, the arc end radius of the single-bow baffle is the same as the inner radius of the heating fluid device, and the arc edge of the single-bow baffle is fixedly connected to the inner wall of the lining pipe. The shape of the double-bow baffle is a baffle surface with arc shapes at both ends, the arc end radius of the double-bow baffle is the same as the inner radius of the heating fluid device, and the arc edges at both ends of the double-bow baffle are fixedly connected to the inner wall of the lining pipe. The special heating body structure and layout form are adopted to increase the heat exchange area and reduce the flow field resistance. At the same time, the use of antioxidant stability materials makes the heating body have good chemical stability, thermal stability, antioxidant ability, and good heat exchange ability under gas, liquid, heat and other working conditions.

[0010] The thickness of the electrode flow channel in the high-frequency magnetic field heating zone is 0.1-0.5 mm, and the thickness of the electrode flow channel in the low-frequency magnetic field heating zone is 0.5-1.0 mm.

[0011] Beneficial effects:

[0012] It is used for electrolyte heating in the fields of electrolytic hydrogen production, and can also be applied to other fluids (liquids or gases); various fields with rapid heating, energy saving and carbon reduction requirements, with a wide range of uses, high thermal efficiency and large processing capacity.

[0013] This equipment can be used alone or in combination, with small footprint, large processing capacity, high processing efficiency, low operating energy consumption, good environmental adaptability and system compatibility. It can be widely used in different complex working conditions and external environments, convenient skid installation, and low installation cost. It has short heating time, high energy conversion efficiency, direct heating of liquid, reducing the intermediate heat transfer process used in traditional heating, and improving heat utilization efficiency.

[0014] The product has intrinsic safety performance and will not produce open flames, electric sparks, steam leakage, etc. In addition, it has the characteristics of long service life and easy installation; there are no dangerous points of traditional electric heating (electric spark ignition) and steam heating (steam leakage).

[0015] The multi-section arrangement is adopted to couple the variable frequency magnetic field, which can carry out all-round heating, the heating is uniform and controllable, and the feeding can be continuous; the PLC temperature control and interlocking system are adopted, which makes the operation more convenient.

[0016] The special heating body structure and layout form are adopted to increase the heat exchange area and reduce the flow field resistance. At the same time, the use of antioxidant and stable materials makes the heating body have good chemical stability, thermal stability, antioxidant ability and good heat exchange ability under gas, liquid and heat working conditions;

[0017] The materials are simple and easy to obtain, and are easy to process and install. The heating module adopts a honeycomb through-hole form (rapid heat exchange and large heat exchange area), and single and double-bow baffles are used to guide the flow inside. Different heating powers are used in different external areas to make the heating uniform and efficient.

[0018] There is no need for all-round heating of fluid by traditional heating equipment, which is time-consuming, labor-intensive, slow to start, and wastes energy. It only heats a small portion of liquid that needs to enter the reaction to meet the needs of rapid start-up of electrolytic cells, etc., especially during the use of large-scale electrolytic cells, the power saving or rapid start-up effect is more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a process flow chart of rapid heating fluid for producing hydrogen by electrolysis of water;

[0020] Figure 2 It is a cross-sectional view of a rapid fluid heating device for producing hydrogen by electrolysis of water;

[0021] Figure 3 It is an AA cross-sectional view of a rapid fluid heating device for producing hydrogen by electrolysis of water;

[0022] Figure 4 It is a surface diagram of a baffle plate of a rapid fluid heating device for producing hydrogen by electrolysis of water;

[0023] Figure 5 It is a cross-sectional view of an electrode tube of a rapid fluid heating device for producing hydrogen by electrolysis of water;

[0024] In the figure; 1. single-bow baffle, 2. heating chamber, 3. insulation cotton, 4. electromagnetic generating coil winding, 5. inlet and outlet, 6. double-bow baffle, 7. honeycomb porous electrode tube, 8. high-frequency magnetic field heating zone, 9. low-frequency magnetic field heating zone, 10. system control cabinet, 11. signal cable, 12. sensor, 13. electromagnetic coil wire, 15. lining pipe, 19. electrode tube positioning and fixing hole, 20. baffle surface, 21. electrode tube fixing outer ring, 22. heating electrode module, 23. inner flow channel hole, 24. outer flow channel cavity. DETAILED DESCRIPTION

[0025] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0026] Single-bow baffle 1, heating chamber 2, thermal insulation cotton 3, electromagnetic generating coil winding 4, inlet and outlet 5, double-bow baffle 6, honeycomb porous electrode tube 7, high-frequency magnetic field heating zone 8, low-frequency magnetic field heating zone 9, system control cabinet 10, signal cable 11, sensor 12, electromagnetic coil wire 13, lining pipe 15, electrode tube positioning and fixing hole 19, baffle surface 20, electrode tube fixing outer ring 21, heating electrode module 22, inner flow channel hole 23, outer flow channel cavity 24.

[0027] like Figure 1 , 2 , 3, 4, 5 as shown;

[0028] A rapid fluid heating device for producing hydrogen by electrolysis of water, the rapid fluid heating device is a conductive heating fluid device, the internal conductive heating fluid device is provided with a plurality of honeycomb porous electrode tubes 7, the outer sides of the plurality of honeycomb porous electrode tubes 7 are suspended horizontally and fixedly arranged inside the heating fluid device through baffles, the baffles are fixed to the inner wall surface of the heating fluid device, the surface of the baffles is equidistantly provided with a plurality of electrode tube positioning fixing holes 19, the baffles include single-bow baffles 1 and double-bow baffles 6, the double-bow baffles 6 are arranged at the center and both ends of the heating fluid device, single-bow baffles 1 are equidistantly arranged on the upper and lower sides between two adjacent double-bow baffles 6, the adjacent motor tube positioning The electrode spacing L of the center spacing of the fixing holes is 5-20cm, the electrode angle O of the center angle of the adjacent electrode tube positioning fixing holes 19 is 30-90°, the outer side of the honeycomb porous electrode tube 7 is connected to the electrode tube positioning fixing hole 19 through the electrode tube fixing outer ring 21, and the inside of the honeycomb porous electrode tube 7 is provided with a plurality of honeycomb-shaped heating electrode modules 22, each of the heating electrode modules 22 is provided with an inner flow channel hole 23, the thickness d of the heating electrode module 22 is 0.1-1.0mm, the inner diameter r of the inner flow channel hole 23 is 5-10mm, the outer side of the combined hot electrode module 22 is embedded in the inside of the electrode fixing outer ring 21, and the outer side of the heating fluid device is outsourced An electromagnetic generating coil winding 4 is provided, and the outer side of the electromagnetic generating coil winding 4 is provided with thermal insulation cotton 3, and the inner side of the thermal insulation cotton 3 is provided with an inner lining pipe 15. The electromagnetic generating coil winding 4 is a hollow inner cooling fluid coil winding for cooling the electromagnetic coil (tube), and the cooling fluid flow rate is controlled and interlocked with the electromagnetic frequency and the pipeline fluid temperature. A high-frequency magnetic field heating zone 8 and a low-frequency magnetic field heating zone 9 are provided inside the heating fluid device. The high-frequency magnetic field heating zone 8 is provided on both sides of the double-bow baffles 6 at both ends, and the low-frequency magnetic field heating zone 9 is provided on both sides of the middle double-bow baffle 6. Sensors 12 are provided on the outer sides of the high-frequency magnetic field heating zone 8 and the low-frequency magnetic field heating zone 9, and the sensors 12 are connected via signal cables. 11 is connected to the system control cabinet 10, and the system control cabinet 10 is respectively connected to the electromagnetic generating coil winding 4 of the high-frequency magnetic field heating zone 8 and the low-frequency magnetic field heating zone 9 through the electromagnetic coil wire 13. The shape of the single-bow baffle plate 1 is a semicircular baffle plate surface 20, and the arc end radius of the single-bow baffle plate 1 is the same as the inner radius of the heating fluid device. The arc edge of the single-bow baffle plate 1 is fixedly connected to the inner wall of the lining pipe 15. The shape of the double-bow baffle plate 6 is a baffle plate surface 20 with arc shapes at both ends. The arc end radius of the double-bow baffle plate 6 is the same as the inner radius of the heating fluid device. The arc edges at both ends of the double-bow baffle plate 6 are fixedly connected to the inner wall of the lining pipe 15. The electrode flow channel thickness of the high-frequency magnetic field heating zone 8 is 0.1-0.5mm, the thickness of the electrode flow channel of the low-frequency magnetic field heating zone 9 is 0.5-1.0mm.

[0029] Implementation examples;

[0030] a. The liquid enters the interior of the heating fluid device through the turbulent flow, and the flow rate in the high-frequency magnetic field heating area is controlled at 0.01-0.5m / s; the flow rate in the low-frequency magnetic field heating area is controlled at 0.005-0.2m / s.

[0031] b. The variable load system control cabinet converts 220V or 380V AC power after rectification and filtering, and then converts DC into AC, generating frequency magnetic lines in the induction coil, causing eddy currents to be generated on the surface of the conductor workpiece in the induction coil, which generates heat due to the internal resistance of the conductor.

[0032] c. The fluid passes through the high-frequency magnetic field heating zone. Due to the high flow rate, high-frequency magnetic heat is used. The electromagnetic induction frequency is 20-50KHz, so that it quickly reaches the initial temperature.

[0033] d. Taking the ALK electrolytic hydrogen production cell as an example, the temperature of the fluid quickly reaches 30-40°C at the entrance of the high-frequency magnetic field heating zone; medium and low frequency magnetic fields are used for heating when entering the low-frequency magnetic field heating zone to make the temperature reach 50-70°C; at the exit of the high-frequency magnetic field heating zone, high-frequency magnetic field heating is used again to make the fluid temperature reach 70-85°C;

[0034] e. According to the actual situation, the heated fluid can be introduced into the electrolytic cell by continuous series connection, parallel connection, etc. When the outlet fluid temperature of the electrolytic cell reaches above 55°C and the cell body temperature reaches above 30°C, the electrolysis reaction can be started and gradually increased to the rated power of the hydrogen production cell. The time required for the initial startup is roughly equivalent to the time required to replace the electrolyte in the electrolytic cell.

[0035] Example 1, electromagnetic frequency (KHz); Zone A: 30, Zone B: 15, Zone C: 30, thickness of heating electrode module d (mm); 0.5, diameter of inner diameter of heating electrode module r; 5 (mm), electrode tube spacing L; 8 (cm), flow flux through electrolytic cell (m3 / h); 8, electrode tube arrangement angle (A zone a°, B zone a°, C zone a°); Zone A: a 30°, Zone B: a 45°, Zone C: a 30°

[0036] Electromagnetic frequency of Example 2 (KHz); Zone A: 30, Zone B: 15, Zone C: 30, thickness d of heating electrode module (mm); 0.5, diameter r of inner diameter of heating electrode module; 5 (mm), electrode tube spacing L; 6 (cm), flow flux through electrolytic cell (m3 / h); 0.8, electrode tube arrangement angle (A zone a°, B zone a°, C zone a°); Zone A: a 45°, Zone B: a 45°, Zone C: a 30°

[0037] Electromagnetic frequency of Example 3 (KHz); Zone A: 35, Zone B: 20, Zone C: 35, thickness of heating electrode module d (mm); 0.5, diameter of inner diameter of heating electrode module r; 10 (mm), electrode tube spacing L; 4 (cm), flow flux through electrolytic cell (m3 / h); 0.5, electrode tube arrangement angle (A zone a°, B zone a°, C zone a°); Zone A: a 45°, Zone B: a 45°, Zone C: a 45°

[0038] Electromagnetic frequency of Example 4 (KHz); Zone A: 30, Zone B: 20, Zone C: 30, thickness d of heating electrode module (mm); 0.5, diameter r of inner diameter of heating electrode module; 10 (mm), electrode tube spacing L; 5 (cm), flow flux through electrolytic cell (m3 / h); 0.6, electrode tube arrangement angle (A zone a°, B zone a°, C zone a°); Zone A: a 60°, Zone B: a 45°, Zone C: a 60°

[0039] Electromagnetic frequency of Example 5 (KHz); Zone A: 35, Zone B: 20, Zone C: 35, thickness of heating electrode module d (mm); 0.5, diameter of inner diameter of heating electrode module r; 10 (mm), electrode tube spacing L; 5 (cm), flow flux through electrolytic cell (m3 / h); 0.6, electrode tube arrangement angle (A zone a°, B zone a°, C zone a°); Zone A: a 90°, Zone B: a 60°, Zone C: a 90°

[0040] The inlet temperature is uniformly electrolyte (5°C), and the equipment is tested using a 30Nm3 / h electrolytic hydrogen production tank system; the rated power of the electromagnetic assisted heating equipment is 30KW (size: (φ200, φ300)×500mm).

[0041] Comparative Example 1 adopts the normal cold start mode without any auxiliary heating measures;

[0042] Comparative Example 2 adopts the currently widely used electric heating mode, uses electric heating tubes for heating, and the heating module uses explosion-proof electrical and control modules;

[0043] Comparative Example 3 adopts a steam heating mode, uses a steam heating pipe for auxiliary heating, and all steam pipes are insulated.

[0044] As shown in the following table. Test performance of each embodiment

[0045]

[0046]

[0047] From the data of the embodiment, it can be found that:

[0048] 1. The non-contact electromagnetic heating device and system used in the present invention are far superior to traditional auxiliary heating methods in terms of heating efficiency, heating time, floor space and volume, and convenience of installation or replacement. In addition, non-contact heating is inherently safe and has a long service life. Replacement or maintenance does not require large-scale disassembly and assembly, but only requires quick replacement, making it extremely convenient to use.

[0049] 2. Within a certain range, a higher electromagnetic induction frequency has a faster heating speed or efficiency, but too high an electromagnetic induction frequency will consume more energy and its efficiency will be slightly reduced.

[0050] 3. The interaction between the thickness d (mm) of the heating electrode module and the inner diameter r (mm) of the heating electrode module is complementary to each other. Appropriate thickness and flow diameter are conducive to flow heat transfer.

[0051] 4. Too large or too small distance between the electrodes (cm) is not conducive to heat transfer and efficiency. In this case, it is best to control it at about 5cm. The best arrangement angles of the electrode tubes are zone A: a 60°, zone B: a 45°, and zone C: a 60).

[0052] 5. The flow rate (m3 / h) flowing through the electrolytic cell must match the electrolytic water consumption demand and heat dissipation demand. At the beginning of startup, a lower flow rate has a good effect on shortening the heating time.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid fluid heating device for producing hydrogen by electrolysis of water, the rapid fluid heating device being a conductive heating fluid device, characterized in that: The heating fluid device is internally conductively provided with a plurality of honeycomb porous electrode tubes, the outer sides of the plurality of honeycomb porous electrode tubes are horizontally suspended and fixedly arranged inside the heating fluid device through baffles, the baffles are fixed to the inner wall surface of the heating fluid device, and the surface of the baffles is equidistantly provided with a plurality of electrode tube positioning and fixing holes, the baffles include single-bow baffles and double-bow baffles, the double-bow baffles are arranged at the center and both ends of the heating fluid device, and single-bow baffles are equidistantly arranged on the upper and lower sides between two adjacent double-bow baffles, and the center of the adjacent motor tube positioning and fixing holes is equidistant. The electrode spacing L is 5-20cm, the electrode angle O of the center angle of adjacent electrode tube positioning and fixing holes is 30-90°, the outer side of the honeycomb porous electrode tube is connected to the electrode tube positioning and fixing hole through the electrode tube fixing outer ring, and the interior of the honeycomb porous electrode tube is provided with a plurality of honeycomb combined hexagonal heating electrode modules, and the center of each heating electrode module is connected with an inner flow channel hole, the thickness d of the heating electrode module is 0.1-1.0mm, the inner diameter r of the inner flow channel hole is 5-10mm, and the outer side of the combined hot electrode module is embedded inside the electrode fixing outer ring.

2. The rapid fluid heating device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The outer side of the heating fluid device is provided with an electromagnetic generating coil winding, the outer side of the electromagnetic generating coil winding is provided with thermal insulation cotton, the inner side of the thermal insulation cotton is embedded and wrapped with an inner lining pipe, and the electromagnetic generating coil winding is a hollow inner cooling fluid coil winding.

3. The rapid fluid heating device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: A high-frequency magnetic field heating zone and a low-frequency magnetic field heating zone are provided inside the heating fluid device. The high-frequency magnetic field heating zone is provided on both sides of the double-bow baffles at both ends, and the low-frequency magnetic field heating zone is provided on both sides of the double-bow baffles in the middle. Sensors are provided on the outsides of the high-frequency magnetic field heating zone and the low-frequency magnetic field heating zone. The sensors are connected to the system control cabinet through signal cables, and the system control cabinet is connected to the electromagnetic generating coil winding control of the high-frequency magnetic field heating zone and the low-frequency magnetic field heating zone through electromagnetic coil wires.

4. The rapid fluid heating device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The shape of the single-bow baffle is a semicircular baffle surface, the arc end radius of the single-bow baffle is the same as the inner radius of the heating fluid device, and the arc edge of the single-bow baffle is fixedly connected to the inner wall of the lining pipe.

5. The rapid fluid heating device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The double-bow baffle is in the shape of a baffle surface with arc shapes at both ends. The arc end radius of the double-bow baffle is the same as the inner radius of the heating fluid device. The arc edges at both ends of the double-bow baffle are fixedly connected to the inner wall of the lining pipe.

6. A rapid fluid heating device for producing hydrogen by electrolysis of water according to claim 3, characterized in that: The thickness of the electrode flow channel in the high-frequency magnetic field heating zone is 0.1-0.5 mm, and the thickness of the electrode flow channel in the low-frequency magnetic field heating zone is 0.5-1.0 mm.

7. A process for rapidly heating a fluid for producing hydrogen by electrolysis of water, characterized in that: The specific process of the process is as follows: a. The liquid enters the interior of the heating fluid device through the turbulent flow, and the flow rate in the high-frequency magnetic field heating area is controlled at 0.01-0.5m / s; the flow rate in the low-frequency magnetic field heating area is controlled at 0.005-0.2m / s. b. The variable load system control cabinet converts 220V or 380V AC power after rectification and filtering, and then converts DC into AC, generating frequency magnetic lines in the induction coil, causing eddy currents to be generated on the surface of the conductor workpiece in the induction coil, which generates heat due to the internal resistance of the conductor. c. The fluid passes through the high-frequency magnetic field heating zone. Due to the high flow rate, high-frequency magnetic heat is used. The electromagnetic induction frequency is 20-50KHz, so that it quickly reaches the initial temperature. d. Taking the ALK electrolytic hydrogen production cell as an example, the temperature of the high-frequency magnetic field heating zone is quickly increased to 30-40°C at the entrance; medium and low frequency magnetic fields are used to heat the low-frequency magnetic field heating zone to reach a temperature of 50-70°C; At the outlet of the high-frequency magnetic field heating zone, high-frequency magnetic field heating is used again to make the fluid temperature reach 70-85°C; e. According to the actual situation, the heated fluid can be introduced into the electrolytic cell by continuous series connection, parallel connection, etc. When the outlet fluid temperature of the electrolytic cell reaches above 55°C and the cell body temperature reaches above 30°C, the electrolysis reaction can be started and gradually increased to the rated power of the hydrogen production cell. The time required for the initial startup is roughly equivalent to the time required to replace the electrolyte in the electrolytic cell.

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