Water electrolysis hydrogen production saturation device

Abstract

The utility model relates to a water electrolysis hydrogen production saturation device, and relates to the field of hydrogen energy preparation. According to the technical scheme, through structural innovation and temperature measurement technology optimization, the safety and the operation efficiency of the water electrolysis hydrogen production saturation device are remarkably improved, the electric heater is adopted to replace a traditional heat exchanger to achieve quick starting, high-heat-conductivity medium circulation in the jacketed pipe is combined, the dry burning risk is effectively reduced, cold and hot interface temperature difference sudden change is reduced, and energy consumption is reduced. The temperature uniformity in the first cavity is greatly improved, the PT100 platinum resistor is matched for temperature measurement, the temperature measurement delay time is remarkably shortened, the precision is improved, and reliable support is provided for precise temperature control.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy production technology, and in particular to a saturated device for producing hydrogen by electrolysis of water. Background Technology

[0002] In the water electrolysis hydrogen production process, the oxygen and moisture entrained in the hydrogen not only reduce the gas purity but also pose an explosion risk. Therefore, a deoxygenation device is needed for efficient purification. Traditional deoxygenation processes rely on catalytic reactions to remove oxygen, but catalyst activity is highly sensitive to temperature, requiring strict control of the reaction temperature within a specific range. Existing temperature monitoring methods have significant limitations: one method involves indirectly measuring the inlet / outlet temperature using a thermometer, but due to heat conduction delays and gas flow interference, the monitoring data exhibits a significant lag; another method uses a PT100 platinum resistance thermometer directly inserted into the heating chamber for temperature measurement, but this is limited by uneven airflow distribution and differences in heat exchange efficiency within the heating chamber, resulting in a deviation between the measured temperature and the actual catalyst operating temperature, leading to insufficient temperature control accuracy.

[0003] The aforementioned monitoring deficiencies are particularly prominent under dynamic operating conditions: for example, during the start-up phase of the device, the deoxygenation efficiency may decrease in some areas due to the temperature not reaching the catalytic threshold, while the high-temperature area may experience catalyst sintering failure due to heat accumulation; more seriously, hydrogen, as a highly diffusive and explosive medium, is prone to local overheating or even dry burning due to temperature gradients, which may lead to equipment damage or safety accidents, especially under high-load operation or poor heat dissipation scenarios. Summary of the Invention

[0004] The purpose of this invention is to provide a saturated device for producing hydrogen through water electrolysis, in order to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A water electrolysis hydrogen production saturation device, comprising:

[0007] The deaerator has a mixed gas inlet, a drain outlet, a catalyst inlet, and a catalyst outlet on its wall; and

[0008] The heater has multiple electric heating tubes arranged vertically inside and PT100 platinum resistance thermometers located between the multiple electric heating tubes. The heater is divided into a first cavity, a second cavity located below the first cavity, and a third cavity located above the first cavity by a baffle. The heater wall is provided with a hydrogen outlet connected to the first cavity, a heat transfer medium inlet connected to the second cavity, and a heat transfer medium outlet connected to the third cavity.

[0009] The heater has a first end inserted into the deaerator from the top, and a second end located outside the deaerator. Multiple electric heating tubes and the PT100 platinum resistance thermometer are fitted with jacketed tubes, the two ends of which are connected to the second cavity and the third cavity, respectively. The heater wall is also provided with multiple sets of air inlets, the two ends of which are connected to the first cavity and the interior of the deaerator, respectively.

[0010] In one possible implementation, an orifice plate is also provided on the lower inner side of the deaerator, the orifice plate having a number of small holes for water and gas to pass through, and a central hole for fitting with the outer periphery of the heater;

[0011] The mixed gas inlet, catalyst inlet, and catalyst outlet are all located above the orifice plate, while the drain outlet and multiple sets of air inlets are located below the orifice plate. The orifice plate supports the catalyst packing above it.

[0012] In one possible implementation, the mixed gas inlet is located at the top of the deoxidizer, the catalyst inlet is located at the upper part of the deoxidizer, the catalyst outlet is located at the lower part of the deoxidizer, and the drain outlet is located at the bottom of the deoxidizer.

[0013] In one possible implementation, a gap is provided between the plurality of electric heating tubes and the PT100 platinum resistance and the jacket tube for the passage of a heat transfer medium.

[0014] In one possible implementation, multiple sets of the air inlets are evenly spaced along the axial direction of the heater.

[0015] In one possible implementation, each group of air inlets consists of multiple through holes that are evenly spaced along the circumference of the heater.

[0016] In one possible implementation, a plurality of staggered baffles are further provided in the first cavity along the axial direction of the heater.

[0017] In one possible implementation, the plurality of the electric heating tubes and the PT100 platinum resistance thermometer are all connected to the control box.

[0018] The beneficial effects of the technical solution provided by this utility model include at least the following:

[0019] This technical solution significantly improves the safety and operating efficiency of the water electrolysis hydrogen production saturation device through structural innovation and temperature measurement technology optimization. It adopts an electric heater to replace the traditional heat exchanger to achieve rapid start-up. Combined with the circulation of high thermal conductivity medium in the jacket tube, it effectively reduces the risk of dry burning, reduces sudden temperature differences at the hot and cold interfaces, and greatly improves the temperature uniformity in the first chamber. With the help of PT100 platinum resistance temperature measurement, it significantly shortens the temperature measurement lag time and improves accuracy, providing reliable support for precise temperature control. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0021] Figure 1 A schematic diagram of the structure of an electrolytic water hydrogen production saturation device provided in an exemplary embodiment of the present invention is shown.

[0022] Figure 2 A schematic diagram of the orifice plate of an electrolytic water hydrogen production saturation device provided in an exemplary embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram of the air inlet of an electrolytic water hydrogen production saturation device provided in an exemplary embodiment of the present invention is shown.

[0024] In the picture:

[0025] 1. Deoxidizer; 11. Mixed gas inlet; 12. Drain outlet; 13. Catalyst inlet; 14. Catalyst outlet; 15. Orifice plate; 16. Small hole; 17. Central hole; 18. Catalyst packing;

[0026] 2. Heater; 21. Electric heating tube; 22. PT100 platinum resistance thermometer; 23. Baffle; 24. First chamber; 25. Second chamber; 26. Third chamber; 27. Hydrogen outlet; 28. Heat transfer medium inlet; 29. ​​Heat transfer medium outlet; 210. Jacketed tube; 211. Air inlet; 212. Baffle plate; 213. Control box. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This diagram illustrates the structure of an electrolytic water hydrogen production saturation device according to an exemplary embodiment of the present invention. The device includes a deaerator 1 and a heater 2. The first end of the heater 2 is inserted into the interior of the deaerator 1 from the top, and the second end of the heater 2 is located outside the deaerator 1. The wall of the deaerator 1 is provided with a mixed gas inlet 11, a drain outlet 12, a catalyst inlet 13, and a catalyst outlet 14. The interior of the heater 2 is vertically arranged with multiple electric heating tubes 21 and PT100 platinum resistance thermometers 22 located between the multiple electric heating tubes 21. The interior of the heater 2 is divided into a first chamber 24 by a baffle 23. The heater 2 has a second cavity 25 below the first cavity 24 and a third cavity 26 above the first cavity 24. The heater 2 has a hydrogen outlet 27 connected to the first cavity 24, a heat transfer medium inlet 28 connected to the second cavity 25, and a heat transfer medium outlet 29 connected to the third cavity 26. The heater 2 has multiple electric heating tubes 21 and PT100 platinum resistance tubes 22, each with a jacket tube 210 on its outer periphery. The two ends of the jacket tube 210 are connected to the second cavity 25 and the third cavity 26, respectively. The heater 2 also has multiple sets of air inlets 211, the two ends of which are connected to the interior of the first cavity 24 and the deoxygenator 1, respectively.

[0031] It is understood that there are gaps between the multiple electric heating tubes 21 and the PT100 platinum resistance thermometer 22 and the jacket tube 210, allowing the heat transfer medium to pass through. Maintaining a specific gap between the electric heating tubes and the jacket tube forms a heat transfer medium channel. By controlling the gap size and medium flow rate, turbulence is ensured to enhance heat exchange, while the medium's heat capacity buffers temperature fluctuations. The medium within the gap serves both as a heat conduction medium and as protection against fusion failure of the electric heating tubes. The PT100 platinum resistance thermometer is inserted in the middle of the gap to directly measure the medium temperature, eliminating gas temperature measurement lag. The gap's heat storage capacity buffers instantaneous power fluctuations, maintaining temperature stability.

[0032] In this embodiment, the heater is divided into three chambers (upper, middle, and lower) by baffles, corresponding to the inlet and outlet of the heat transfer medium and the hydrogen processing zone, respectively, forming a closed loop. The electric heating tube and the PT100 platinum resistance thermometer are jacketed, utilizing a heat-conducting medium for indirect heating, avoiding direct contact between the high-temperature components and hydrogen, preventing hydrogen decomposition due to overheating, and providing a stable detection environment for the PT100 platinum resistance thermometer. The series design of the deoxygenator and heater achieves a two-stage purification process of "catalytic deoxygenation - high-temperature drying." Through the synergistic effect of gas-liquid separation and heat exchange, the purity of hydrogen is significantly improved, while reducing energy consumption and equipment size.

[0033] It's worth noting that the temperature measurement principle of the PT100 platinum resistance thermometer is based on the characteristic that the resistance of platinum metal changes with temperature. Its core lies in utilizing the temperature coefficient of resistance of platinum (approximately 0.003925 Ω / Ω·℃) to convert the temperature signal into a change in resistance. When the temperature rises, the thermal motion of atoms inside the platinum wire intensifies, and electron migration is hindered, leading to a linear increase in resistance; conversely, when the temperature decreases, the resistance decreases. By accurately measuring the resistance change of the platinum resistance thermometer and combining it with its reference value of 100 Ω at 0℃ and standard calibration tables (such as IEC 751), the corresponding temperature value can be calculated. This resistance change is typically converted into a voltage signal using a Wheatstone bridge or constant current source circuit, achieving high-precision temperature detection.

[0034] Furthermore, Figure 2 This diagram illustrates the structure of an orifice plate in an exemplary embodiment of the electrolytic water hydrogen production saturation apparatus of the present invention. An orifice plate 15 is also provided on the lower interior side of the deoxidizer 1. The orifice plate 15 has several small holes 16 for water and gas supply, and a central hole 17 for fitting with the outer periphery of the heater 2. The mixed gas inlet 11, catalyst inlet 13, and catalyst outlet 14 are all located above the orifice plate 15, while the drain outlet 12 and multiple sets of air inlets 211 are located below the orifice plate 15. The orifice plate 15 supports the catalyst packing 18 above it. Specifically, the mixed gas inlet 11 is located at the top of the deoxidizer 1, the catalyst inlet 13 is located at the upper part of the deoxidizer 1, the catalyst outlet 14 is located at the lower part of the deoxidizer 1, and the drain outlet 12 is located at the bottom of the deoxidizer 1.

[0035] In this embodiment, the orifice plate employs a mechanical sieving design, with uniformly distributed small holes and a central positioning hole. The pore size is controlled (smaller than the catalyst particle size) to support the catalyst while allowing gas-liquid flow. Specifically, the orifice plate divides the deoxidizer into upper and lower zones: the upper zone is the catalytic reaction zone, and the lower zone is the gas-liquid separation zone. The central positioning hole is nested with the heater for positioning and sealing. The catalyst inlet and outlet are located in the upper and lower sections respectively, forming a packing circulation path to avoid bridging. The mixed gas inlet is located at the top, and the drain outlet is located at the bottom, creating natural convection. The combination of the orifice plate and the catalyst bed forms a highly efficient reaction interface. Stable catalyst loading is achieved through gravity and the pore size difference, significantly improving oxygen conversion efficiency while simultaneously increasing gas-liquid separation efficiency and reducing catalyst loss.

[0036] For details, please refer to Figure 1 Multiple sets of air inlets 211 are evenly spaced along the axial direction of the heater 2. In one example, three sets of air inlets 211 are evenly spaced along the axial direction of the heater 2.

[0037] More in detail, Figure 3 The diagram shows a schematic of the air inlet of an electrolytic water hydrogen production saturation device according to an exemplary embodiment of the present invention. Each group of air inlets 211 consists of multiple through holes, which are evenly spaced along the circumference of the heater 2. In one example, eight through holes are evenly spaced along the circumference of the heater 2.

[0038] In this embodiment, the air inlets can be optimized for gas distribution and anti-clogging performance by controlling their diameter, spacing, and tilt angle. The axial distribution of the multiple sets of air inlets balances the gas velocity gradient, while the circumferential openings of each set of air inlets counteract airflow deviation, forming a spiral air intake pattern.

[0039] Specifically, please refer to Figure 1 Within the first cavity 24, multiple staggered baffles 212 are also arranged along the axial direction of the heater 2. These staggered baffles within the heater cavity promote gas turbulence, enhance radial mixing, improve temperature uniformity, extend the gas path length, and increase heat exchange time. Combined with the aforementioned inlet design, this significantly improves the heater's volumetric heat transfer coefficient.

[0040] For more details, please refer to Figure 1 Multiple electric heating tubes 21 and PT100 platinum resistance thermometers 22 are connected to the control box 213 to monitor the current of the electric heating tubes and the temperature data of the PT100 platinum resistance thermometers in real time, so as to achieve rapid response and precise temperature control.

[0041] Next, the working principle of an electrolytic water hydrogen production saturation device involved in the embodiments of this utility model will be explained.

[0042] The catalyst packing 18 in the deoxidizer 1 is introduced through the catalyst inlet 13 and discharged through the catalyst outlet 14;

[0043] The mixed gas (gas-liquid two-phase medium) enters the deoxidizer 1 through the mixed gas inlet 11 and reacts with the catalyst packing 18. The oxygen in the mixed gas is catalyzed by the reaction. Due to the setting of several small holes 16 on the orifice plate 15, the catalyst packing 18 is supported and will not fall below the orifice plate 15. The water is discharged from the drain outlet 12. The hydrogen after the first purification carries a small amount of oxygen and water through the air inlet 211 and enters the first chamber 24 of the heater 2 for secondary purification. The hydrogen after the second purification is discharged from the hydrogen outlet 27.

[0044] The heat transfer medium enters the second cavity 25 of the heater 2 from the heat transfer medium inlet 28, flows in from the bottom end of the jacket tube 210, passes through the gap between the multiple electric heating tubes 21 and the PT100 platinum resistance 22 and the jacket tube 210, flows from the top end of the jacket tube 210 to the third cavity 26 of the heater 2, and flows out from the heat transfer medium outlet 29.

[0045] When the electric heating tube 21 heats, it heats the gas through the heat transfer medium. At the same time, the heat transfer medium acts as a protective medium against overheating of the electric heating tube 21, and also provides a detection environment with a smaller temperature difference for the PT100 platinum resistance thermometer 22.

[0046] In summary, the electrolytic water hydrogen production saturation device provided by this technical solution achieves multi-stage hydrogen purification through the synergistic effect of gas-liquid separation and heat exchange. Compared with traditional devices, this device has significant improvements in key indicators such as start-up time, hydrogen purity, and energy consumption, meeting the needs of large-scale industrial applications.

[0047] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A hydrogen saturation device for electrolysis of water, characterized by, The device comprises: a deoxidizer (1) with a wall body provided with a mixed gas inlet (11), a drainage outlet (12), a catalyst inlet (13), and a catalyst outlet (14); and a heater (2) with a plurality of electric heating pipes (21) and a PT100 platinum resistance (22) arranged in a vertical direction between the electric heating pipes (21), a first cavity (24) separated by a baffle (23), a second cavity (25) below the first cavity (24), and a third cavity (26) above the first cavity (24), and a wall body provided with a hydrogen outlet (27) connected with the first cavity (24), a heat transfer medium inlet (28) connected with the second cavity (25), and a heat transfer medium outlet (29) connected with the third cavity (26); wherein the first end of the heater (2) is inserted into the inside of the deoxidizer (1) from the top of the deoxidizer (1), and the second end of the heater (2) is located outside the deoxidizer (1); the outer periphery of the plurality of electric heating pipes (21) and the PT100 platinum resistance (22) is sleeved with a jacket pipe (210), and the two ends of the jacket pipe (210) are respectively connected with the second cavity (25) and the third cavity (26); the wall body of the heater (2) is further provided with a plurality of groups of air inlet holes (211), and the two ends of the air inlet holes (211) are respectively connected with the first cavity (24) and the inside of the deoxidizer (1).

2. The water electrolysis hydrogen saturation device according to claim 1, characterized in that, The inside of the deoxidizer (1) is further provided with a hole plate (15) having a plurality of small holes (16) for water and gas passing through and a central hole (17) for sleeving the outer periphery of the heater (2); the mixed gas inlet (11), the catalyst inlet (13), and the catalyst outlet (14) are located above the hole plate (15), the drainage outlet (12) and a plurality of groups of the air inlet holes (211) are located below the hole plate (15), and the hole plate (15) supports the catalyst filler (18) above the hole plate (15).

3. The water electrolysis hydrogen saturation device according to claim 2, characterized in that, The mixed gas inlet (11) is located at the top of the deoxidizer (1), the catalyst inlet (13) is located at the upper part of the deoxidizer (1), the catalyst outlet (14) is located at the lower part of the deoxidizer (1), and the drainage outlet (12) is located at the bottom of the deoxidizer (1).

4. The water electrolysis hydrogen saturation device according to claim 1, characterized in that, The plurality of electric heating pipes (21) and the PT100 platinum resistance (22) have a gap for the heat transfer medium passing through between the electric heating pipes (21) and the jacket pipe (210).

5. The water electrolysis hydrogen saturation device according to claim 1, characterized in that, A plurality of groups of the air inlet holes (211) are uniformly distributed in the axial direction of the heater (2).

6. The water electrolysis hydrogen saturation device according to claim 5, characterized in that, Each group of the air inlet holes (211) is composed of a plurality of through holes, and the plurality of through holes are uniformly distributed in the circumferential direction of the heater (2).

7. The water electrolysis hydrogen saturation device according to claim 1, characterized in that, The first cavity (24) is further provided with a plurality of staggered baffles (212) in the axial direction of the heater (2). 8.The saturated hydrogen production device of water electrolysis according to claim 1, characterized in that, A plurality of the electric heating pipes (21) and the PT100 platinum resistance (22) are connected with a control electric box (213).

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