Pipeline reactor for rapidly heating fluid for hydrogen production separator

Abstract

According to the pipeline reactor for rapidly heating the fluid for the hydrogen production separator, an inlet and an outlet which are communicated with each other are formed in the two ends of the pipeline reactor, the pipeline reactor is in the shape of a stepped straight-through round pipe with the two ends narrow and the middle wide, and a plurality of baffle plates are longitudinally arranged in the pipeline reactor in a separated mode; areas on the left and right sides of the three double-bow baffle plates are respectively a heating area A, a heating area B and a heating area C, the heating area B is arranged at the center of the widest section of the middle part of the pipeline reactor, and the heating area A and the heating area C are respectively arranged on the inner side of the width of the middle part in the inlet / outlet at the two ends of the pipeline reactor; the equipment can be quickly expanded in series and in parallel according to actual field requirements and emission requirements; the electromagnetic heating device and an electrolyte conveying pipeline can be combined for use; electrolyte entering an electrolytic hydrogen production device is fully and rapidly heated, the fluid temperature is increased, especially when a large standard square electrolytic cell is in cold start, more than 90% of time can be saved, and rapid start and stop are truly achieved.

Description

Technical Field

[0001] This article belongs to the technical field of heated fluid pipelines, specifically relating to a pipeline reactor for rapidly heated fluids used in a hydrogen production separator. Background Technology

[0002] With the development of human production activities and industry, the emission of greenhouse gases has been increasing. The main cause of global warming is the large amount of greenhouse gases emitted into the atmosphere, of which CO2 is the most emitted. 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 in the energy industry.

[0003] Green hydrogen produced from green electricity, as an absolutely clean energy source, has unparalleled advantages over other fossil fuels and does not produce greenhouse gases such as CO2. Therefore, electrolytic hydrogen production equipment and systems have developed rapidly. However, during the start-up and shutdown of hydrogen production equipment, there is a mismatch between the electrolyte temperature and the optimal reaction temperature of the electrolyzer to varying degrees. More often than not, it takes a considerable amount of time for the electrolyte to reach the minimum reaction temperature during hydrogen production. This also leads to problems with the timely and mismatched power output of wind and solar-based green electricity in the hydrogen production equipment. For example, even when photovoltaic power reaches more than 50% of its generating load, it still takes more than 2 hours for the electrolyte to reach the minimum reaction temperature required to enter the electrolyzer, resulting in a waste of green electricity (due to insufficient temperature preventing high-power startup).

[0004] Traditional start-up and shutdown methods use electrolyte insulation, requiring large insulation devices that are expensive and require significant space. Currently widely used electric heating systems suffer from heating element corrosion during operation, potentially leading to leaks, melting resistance wires (requiring frequent replacement and impacting production efficiency), and electrical sparks, all of which endanger the safety of the hydrogen production system. Steam heating systems also face issues like hydrogen corrosion or steam leaks over time, are costly and require a large space, and the use of steam boilers poses other safety risks. Therefore, achieving safe, reliable, and rapid heating of the reaction fluid has become a pressing issue.

[0005] Therefore, an electromagnetic heating device is proposed to address the problems encountered in the heating and insulation measures used in current electrolytic hydrogen production equipment, as well as in matching fluctuating power supplies. Utility Model Content

[0006] To address the aforementioned issues, this paper proposes a pipeline reactor for rapidly heating fluid in a hydrogen separator. The pipeline reactor has interconnected inlet and outlet at both ends. It is a stepped, straight-through circular pipe, narrow at both ends and wide in the middle. The interior of the pipeline reactor is longitudinally divided with several baffles. The exterior of the pipeline reactor is equipped with an externally wound electromagnetic generating coil. The baffles include single-bow baffles and double-bow baffles. Three double-bow baffles are located at the center and both ends of the pipeline reactor. Single-bow baffles are equidistantly positioned on the upper and lower sides between two adjacent double-bow baffles. The left and right sides of the three double-bow baffles represent heating zones A, B, and C, respectively. Heating zone B is located in the widest section of the pipeline reactor. In the center, the A-section heating zone and the C-section heating zone are respectively located inside the middle section of the inlet and outlet of the pipeline reactor. The electromagnetic generating coil is externally wrapped with heat insulation material on both sides. The inner surface of the inner heat insulation material is wrapped with engineering plastic pipe. The inner surface of the engineering plastic pipe is fixedly equipped with baffles. Several honeycomb porous electrode tubes are installed through the surface of the baffles. This equipment can be quickly expanded in series and parallel according to actual site needs and emission requirements. The electromagnetic heating device can be used in conjunction with the electrolyte delivery pipeline. It can fully and quickly heat the electrolyte entering the electrolytic hydrogen production device, increase the fluid temperature, and save more than 90% of the time, especially during the cold start of large standard electrolytic cells, truly achieving rapid start-up and shutdown.

[0007] The pipeline reactor is a hollow circular tube with open ends. A wide-diameter heating section B is located in the middle of the reactor. Heating sections A and C are symmetrically arranged at both ends of section B. Inlet and outlet cavities are located at the outer ends of both sections A and C. The heating sections B, A, and C, as well as the inlet and outlet cavities, are connected by a slope transition. This special heating element structure and arrangement increases the heat exchange area and reduces flow resistance. Furthermore, the use of antioxidant materials ensures that the heating element exhibits excellent chemical stability, thermal stability, antioxidant capacity, and heat exchange capacity under gas, liquid, and thermal conditions.

[0008] The B-section heating zone is longitudinally divided by a double-baffle plate in the middle, with low-frequency magnetic field heating zones on both sides. The A-section heating zone is also longitudinally divided by a double-baffle plate in the middle, with high-frequency magnetic field heating zones on both sides. A multi-segment arrangement coupled with a variable frequency magnetic field ensures omnidirectional heating, uniform and controllable heating, and continuous feeding. A PLC temperature control and interlocking system further enhances operation convenience.

[0009] Single-arch baffles are equidistantly arranged on both the upper and lower sides of the double-arch baffles in heating zones A and C, and in heating zone B. These single-arch baffles are all located inside heating zone B. The single-arch baffles and double-arch baffles are equidistantly spaced. Each single-arch baffle has a semi-circular baffle surface, and the radius of its arc end is the same as the inner radius of the connection between the single-arch baffle and the pipeline reactor. The arc-shaped edges of the single-arch baffle are fixedly connected to the inner wall of the engineering plastic pipe. The double-arch baffles have arc-shaped baffle surfaces at both ends, and the radius of their arc ends is the same as the inner radius of the connection between the double-arch baffle and the pipeline reactor. The arc-shaped edges of both ends of the double-arch baffle are fixedly connected to the inner wall of the engineering plastic pipe. Electromagnetic generation... The coil includes a hollow electromagnetic cavity and a heating hollow coil winding. A hollow, conductive cavity is provided between the inner and outer sides of the thermal insulation material. Cooling fluid flows through the hollow electromagnetic coil (tube) to cool it. The flow rate of the cooling fluid (such as refrigerant cooling water) is interlocked with the electromagnetic frequency and the temperature of the fluid in the pipe. The hollow electromagnetic cavity is a spring-shaped wound cavity. The heating hollow coil winding is internally enclosed within the hollow electromagnetic cavity. This eliminates the need for all-around heating of the fluid using traditional heating equipment, which is time-consuming, labor-intensive, slow to start, and wastes energy. It is suitable for heating a small portion of liquid that needs to enter the reaction, meeting the rapid start-up requirements of electrolytic cells, especially in large-scale electrolytic cells, where its energy-saving or rapid start-up effects are more significant. Beneficial effects

[0010] This equipment can be quickly expanded in series or parallel according to actual site needs and emission requirements; it can be used in conjunction with the electromagnetic heating device and the electrolyte delivery pipeline; it can fully and quickly heat the electrolyte entering the electrolytic hydrogen production unit, increasing the fluid temperature. Especially during the cold start of large-scale electrolyzers, it can save more than 90% of the time, truly achieving rapid start-up and shutdown.

[0011] It is used for electrolyte heating in fields such as electrolytic hydrogen production, and can also be applied to other fluids (liquids or gases); it is widely used in various fields with needs for rapid heating, energy saving and carbon reduction, with high thermal efficiency and large processing capacity.

[0012] This equipment can be used independently or in conjunction with other systems. It boasts advantages such as a small footprint, large processing capacity, high processing efficiency, low energy consumption, and good environmental adaptability and system compatibility. It can be widely applied to various complex working conditions and external environments. Skid-mounted installation is convenient and cost-effective. It features short heating time, high energy conversion efficiency, and direct heating of liquids, reducing the intermediate heat transfer processes used in traditional heating methods and improving heat utilization efficiency.

[0013] The product is inherently safe, producing no open flames, electric sparks, or steam leaks. It also features a long service life and easy installation; it eliminates the hazards associated with traditional electric heating (electric spark ignition) and steam heating (steam leaks).

[0014] It adopts a multi-segment coupled variable frequency magnetic field for all-round heating, which is uniform and controllable and allows for continuous feeding; it also uses a PLC temperature control and interlocking system for easier operation.

[0015] By adopting a special heating element structure and arrangement, the heat exchange area is increased and the flow field resistance is reduced. At the same time, the use of antioxidant and stable materials makes the heating element have good chemical stability, thermal stability, antioxidant capacity and good heat exchange capacity under gas, liquid and heat working conditions.

[0016] The materials are simple and readily available, and easy to process and install. The heating module adopts a honeycomb through-hole form (rapid heat exchange and large heat exchange area), and the internal flow is guided by single and double bow baffles. Different heating powers are used in different external areas, which makes the heating uniform and efficient.

[0017] It can heat fluids from all directions without the need for traditional heating equipment, which is time-consuming, labor-intensive, slow to start, and wasteful of energy. It can heat a small portion of liquid that needs to enter the reaction, meeting the needs of rapid start-up in electrolytic cells, especially in large-scale electrolytic cells, where its energy-saving or rapid start-up effect is more obvious. Attached Figure Description

[0018] Figure 1 This is a schematic cross-sectional view of a pipeline reactor for rapidly heating fluids used in a hydrogen production separator;

[0019] Figure 2 This is a schematic diagram of the enlarged DE region cross-section of a pipeline reactor for rapidly heating fluids used in a hydrogen production separator.

[0020] In the diagram: 1. Single-bow baffle, 2. Heating cavity, 3. Thermal insulation material, 4. Electromagnetic generating coil, 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. Hollow electromagnetic wire cavity, 11. Engineering plastic pipe, 12. Heating hollow coil winding. Detailed Implementation

[0021] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0022] 1. Single-bow baffle plate, 2. Heating cavity, 3. Thermal insulation material, 4. Electromagnetic generating coil, 5. Inlet and outlet, 6. Double-bow baffle plate, 7. Honeycomb porous electrode tube, 8. High-frequency magnetic field heating zone, 9. Low-frequency magnetic field heating zone, 10. Hollow electromagnetic wire cavity, 11. Engineering plastic pipe, 12. Heating hollow coil winding.

[0023] like Figure 1 ,2 As shown;

[0024] A pipeline reactor for rapidly heating fluid in a hydrogen separator is disclosed. The pipeline reactor has interconnected inlet and outlet 5 at both ends. The reactor is a stepped, straight-through circular pipe, narrow at both ends and wide in the middle. The interior of the pipeline reactor is longitudinally divided with several baffles. The exterior of the pipeline reactor is externally wrapped with an electromagnetic generating coil. The baffles include single-bow baffles 1 and double-bow baffles 6. Three double-bow baffles 6 are respectively located at the center and both ends of the pipeline reactor. Single-bow baffles 1 are equidistantly positioned on the upper and lower sides between two adjacent double-bow baffles 6. The left and right sides of the three double-bow baffles 6 represent heating zones A, B, and C, respectively. The heating zone B is located within the pipeline... The A-section heating zone and the C-section heating zone are respectively located inside the middle section of the inlet and outlet 5 at both ends of the pipeline reactor. The electromagnetic generating coil is externally wrapped with heat-insulating material 3. An engineering plastic pipe 11 is wrapped around the inner surface of the inner heat-insulating material 3. A baffle plate is fixedly installed on the inner surface of the engineering plastic pipe 11. Several honeycomb porous electrode tubes 7 are perforated on the surface of the baffle plate. The pipeline reactor is a hollow circular tube with open ends. A wide-diameter B-section heating zone is located in the middle of the pipeline reactor. The A-section heating zone and the C-section heating zone are symmetrically located at both ends of the B-section heating zone. The outer end of each of the C-section heating zones is equipped with inlet and outlet 5 cavities. The B-section heating zones, A-section heating zones, C-section heating zones, and the inlet and outlet 5 cavities are all connected by a slope transition. The B-section heating zone has a longitudinally divided double-bow baffle 6 in the middle, with low-frequency magnetic field heating zones 9 on both sides of the double-bow baffle 6. The A-section heating zone also has a longitudinally divided double-bow baffle 6 in the middle, with high-frequency magnetic field heating zones 8 on both sides of the double-bow baffle 6. Single-bow baffles 1 are equidistantly positioned on the upper and lower sides of the double-bow baffles 6 in the A and C sections and the B-section heating zone, respectively. All single-bow baffles 1 are located inside the B-section heating zone, and are equidistant from each other. The single-baffle plate 1 is semi-circular in shape, with its arc-end radius matching the inner radius of the pipe reactor. The arc-shaped edge of the single-baffle plate 1 is fixedly connected to the inner wall of the engineering plastic pipe 11. The double-baffle plate 6 is arc-shaped at both ends, with its arc-end radius matching the inner radius of the pipe reactor. The arc-shaped edges of the double-baffle plate 6 are fixedly connected to the inner wall of the engineering plastic pipe 11. The electromagnetic generating coil 4 includes a hollow electromagnetic cavity 10 and a heating hollow coil winding 12. A hollow electromagnetic cavity 10 is provided between the inner and outer sides of the heat insulation material 3, and the hollow electromagnetic cavity 10 is a spring-shaped wound cavity.The hollow electromagnetic coil cavity 10 contains an internally enclosed heating hollow coil winding 12. Cooling fluid flows through the hollow electromagnetic coil (tube) to cool it. The flow rate of the cooling fluid (such as refrigerant or cooling water) is interlocked with the electromagnetic frequency and the temperature of the fluid in the pipe.

[0025] Implementation example;

[0026] The liquid enters the heating fluid device through turbulence. The flow velocity in the high-frequency magnetic field heating zone 8 is controlled at 0.01-0.5 m / s; the flow velocity in the low-frequency magnetic field heating zone 9 is controlled at 0.005-0.2 m / s. The variable load system control cabinet rectifies, converts, and filters 220V or 380V AC power, then converts DC to AC, generating frequency magnetic lines of force in the induction coil. This causes eddy currents on the surface of the conductor workpiece within the induction coil, which heats up due to the internal resistance of the conductor. As the fluid passes through the high-frequency magnetic field heating zone 8, the high-frequency magnetothermal effect (electromagnetic induction frequency of 20-50 kHz) allows it to quickly reach an initial temperature. Taking the ALK electrolytic hydrogen production cell as an example, the temperature at the inlet of the high-frequency magnetic field heating zone 8 quickly reaches 30-40℃. Entering the low-frequency magnetic field heating zone 9, medium and low-frequency magnetic field heating is used to raise the temperature to 50-70℃. At the outlet of the high-frequency magnetic field heating zone 8, high-frequency magnetic field heating is used again to raise the fluid temperature to 70-85℃.

[0027] Depending on the actual situation, continuous series or parallel connection methods can be used to introduce the heated fluid into the electrolytic cell. When the outlet fluid temperature of the electrolytic cell reaches above 55°C and the cell temperature reaches above 30°C, the electrolysis reaction can be started, gradually increasing to the rated power of the hydrogen production cell. The initial start-up time is roughly equivalent to the time required to replace the electrolyte in the electrolytic cell.

[0028] The heated fluid is introduced into the electrolytic cell. When the outlet fluid temperature of the electrolytic cell reaches above 55°C and the cell temperature reaches above 30°C, the electrolysis reaction can be started. The power of the hydrogen production cell is gradually increased to the rated power. The initial start-up time is roughly equivalent to the time required to replace the electrolyte in the electrolytic cell.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe reactor for rapid heating of a fluid for a hydrogen production separator, the pipe reactor having a pair of mutually conductive inlet and outlet ports at opposite ends thereof, characterized by, The pipeline reactor is a stepped straight-through circular pipe with narrow ends and wide middle part, and the inside of the pipeline reactor is longitudinally divided into several baffles, and the outside of the pipeline reactor is wrapped with electromagnetic generating coils, the baffles include single-bow baffles and double-bow baffles, the double-bow baffles are arranged at the center and two ends of the pipeline reactor, single-bow baffles are arranged at the upper and lower sides of two adjacent double-bow baffles, the left and right sides of the three double-bow baffles are respectively A heating section, B heating section and C heating section, the B heating section is arranged at the center of the widest section of the middle part of the pipeline reactor, the A heating section and the C heating section are arranged at the inside of the middle section of the two ends of the pipeline reactor, the inside and outside of the electromagnetic generating coils are wrapped with heat insulation materials, the inside surface of the inside heat insulation material is wrapped with engineering plastic pipes, the inside surface of the engineering plastic pipes is fixedly provided with baffles, and the surface of the baffles is penetrated by a plurality of honeycomb porous electrode pipes.

2. A pipe reactor for rapid heating of fluid for a hydrogen generator separator according to claim 1, characterized in that, The pipeline reactor is a hollow circular pipe with two ends connected, and the middle part of the pipeline reactor is provided with a wide-diameter B heating section, the two ends of the B heating section are symmetrically provided with A heating sections and C heating sections, and the outer ends of the A heating sections and the C heating sections are provided with inlet and outlet cavities, and the B heating section, the A heating section, the C heating section and the inlet and outlet cavities are connected through slope surfaces.

3. A pipe reactor for rapid heating of fluid for a hydrogen generator separator according to claim 2, characterized in that, The middle part of the B heating section is longitudinally divided into double-bow baffles, and the two sides of the double-bow baffles of the B heating section are low-frequency magnetic field heating zones.

4. A pipe reactor for rapid heating of fluid for a hydrogen generator separator according to claim 1, characterized in that, The middle part of the A heating section is longitudinally divided into double-bow baffles, and the two sides of the double-bow baffles of the A heating section are high-frequency magnetic field heating zones.

5. A pipe reactor for rapid heating of fluid for a hydrogen generator separator according to claim 1, characterized in that, The double-bow baffles of the A heating section and the C heating section are respectively arranged at the inside of the B heating section, and the single-bow baffles are arranged at the upper and lower sides of the double-bow baffles of the B heating section.

6. A pipe reactor for rapid heating of fluid for a hydrogen generator separator according to claim 1, 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 inside radius connected with the pipeline reactor, and the arc-shaped edge of the single-bow baffle is fixedly connected with the inner wall of the engineering plastic pipe.

7. A pipe reactor for rapid heating of fluid for a hydrogen generator separator according to claim 1, characterized in that, The shape of the double-bow baffle is a baffle surface with two arc-shaped ends, the arc end radius of the double-bow baffle is the same as the inside radius connected with the pipeline reactor, and the arc-shaped edges of the two ends of the double-bow baffle are fixedly connected with the inner wall of the engineering plastic pipe.

8. A pipe reactor for rapid heating of fluid for a hydrogen generator separator according to claim 1, characterized in that, The electromagnetic generating coil includes a hollow electromagnetic wire cavity and a heating hollow coil winding, the hollow electromagnetic wire cavity is arranged in the hollow electromagnetic wire cavity between the inside and outside of the heat insulation material, the hollow electromagnetic wire cavity is a spring-shaped winding cavity, and the heating hollow coil winding is arranged in the inside of the hollow electromagnetic wire cavity.

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