A hydrogen purification device and an electrolytic hydrogen generation system
Patent Information
- Application Number
- CN202521898983.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-03
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-09-03
AI Technical Summary
[0003]上述设备的液位状态直接关系到整个干燥系统的运行效率和安全性：若气水分离器液位过高，可能导致液态水被携带进入干燥塔，造成吸附剂失效或性能下降；集水器液位控制过低，可能导致氢气大量流失，存在氢气泄漏的安全隐患
[0010]根据本申请的氢气纯化装置，通过增加水封排放装置，并在气水分离装置、集水装置以及水封排放装置上均设置液位检测控制，实现对水的三级排放，不但能够有效防止氢气泄漏，还可以达到减压的效果。
Smart Images
Figure CN224812652U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrolytic hydrogen production technology, and more specifically to a hydrogen purification device and an electrolytic hydrogen production system. Background Technology
[0002] In modern industrial production, hydrogen, as an important industrial gas and clean energy carrier, is widely used in petrochemicals, electronics and semiconductors, metallurgy, and new energy fields. The drying process of hydrogen is a crucial step in ensuring its quality and safe use. Gas-liquid separators and water collectors are important auxiliary equipment in hydrogen drying systems. Gas-liquid separators separate the condensate generated during the drying process, preventing liquid water from re-mixing into the hydrogen and affecting the drying effect; water collectors collect the condensate discharged from each gas-liquid separator for centralized treatment.
[0003] The liquid level status of the aforementioned equipment directly affects the operating efficiency and safety of the entire drying system: if the liquid level in the gas-liquid separator is too high, liquid water may be carried into the drying tower, causing adsorbent failure or performance degradation; if the liquid level in the water collector is too low, a large amount of hydrogen may be lost, posing a safety hazard of hydrogen leakage. However, current technologies lack systematic monitoring of the liquid levels in each unit, making it difficult to fully grasp the operating status of the entire condensate collection and discharge system, which can easily lead to problems such as water entering the drying tower or hydrogen loss.
[0004] Therefore, a hydrogen purification device and an electrolytic hydrogen production system are needed to at least partially solve the above problems. Utility Model Content
[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0006] To at least partially solve the above problems, a first aspect of this utility model provides a hydrogen purification device for an electrolytic hydrogen production system, the electrolytic hydrogen production system including an electrolytic cell having a hydrogen-side exhaust port, and the hydrogen purification device comprising:
[0007] At least one gas-liquid separation device, wherein the inlet of the gas-liquid separation device is connected to the hydrogen-side exhaust port, the gas-liquid separation device is equipped with a first liquid level gauge, the gas-liquid separation device also has a liquid outlet, a liquid discharge pipe is connected downstream of the liquid outlet, a first control valve is provided on the liquid discharge pipe, and the first control valve is signal-connected to the first liquid level gauge;
[0008] A water collection device is provided, which is also equipped with a second level gauge. The water collection device has a water collection inlet and a water collection outlet. The water collection inlet is connected to the liquid discharge pipe. A water collection discharge pipe is connected downstream of the water collection outlet. A second control valve is provided on the water collection discharge pipe. The second control valve is signal-connected to the second level gauge.
[0009] A water seal discharge device has a discharge inlet and a discharge outlet. The discharge inlet is connected to the water collection discharge pipe of the water collection device. The water seal discharge device is equipped with a third level gauge. The discharge outlet is connected to a discharge pipeline. A third control valve is installed on the discharge pipeline. The third level gauge is signal-connected to the third control valve. The water seal discharge device is connected to the atmosphere.
[0010] According to the hydrogen purification device of this application, by adding a water seal discharge device and setting liquid level detection and control on the gas-liquid separation device, water collection device and water seal discharge device, a three-stage discharge of water can be achieved, which can not only effectively prevent hydrogen leakage, but also achieve the effect of pressure reduction.
[0011] Optionally, the first control valve and the second control valve are signal interlocked.
[0012] Optionally, the third control valve is signal-interlocked with the second control valve.
[0013] Optionally, the hydrogen purification device further includes a controller, which is signal-connected to the first level gauge, the second level gauge, the third level gauge, the first control valve, the second control valve, and the third control valve;
[0014] The gas-liquid separator has a first maximum liquid level and a first minimum liquid level. The first liquid level gauge detects the liquid level in the gas-liquid separator. When the liquid level reaches the first maximum liquid level, the controller controls the first control valve to open. When the liquid level reaches the first minimum liquid level, the controller controls the first control valve to close.
[0015] The water collection device has a second highest liquid level and a second lowest liquid level. The second liquid level gauge detects the liquid level in the water collection device. When the liquid level reaches the second highest liquid level, the controller controls the second control valve to open. When the liquid level reaches the second lowest liquid level, the controller controls the second control valve to close.
[0016] The water seal discharge device has a third highest liquid level and a third lowest liquid level. The third liquid level gauge detects the liquid level in the water seal discharge device. When the liquid level reaches the third highest liquid level, the controller controls the third control valve to open. When the liquid level reaches the third lowest liquid level, the controller controls the third control valve to close.
[0017] Optionally, the discharge outlet of the water seal discharge device is lower than the discharge inlet of the water seal discharge device, and the water seal discharge device has a third minimum liquid level, with the discharge inlet being lower than the third minimum liquid level.
[0018] Optionally, the water seal discharge device is connected to the atmosphere, and the discharge inlet of the water seal discharge device is lower than the water collection outlet of the water collection device.
[0019] Optionally, the water collection outlet of the water collection device is lower than the water collection inlet of the water collection device.
[0020] Optionally, the water inlet of the water collection device is lower than the liquid outlet of the gas-liquid separator.
[0021] Optionally, the liquid outlet of the gas-liquid separator is lower than the inlet of the gas-liquid separator.
[0022] Optionally, the hydrogen purification device includes three sets of gas-water separation devices, which are connected in parallel.
[0023] The second aspect of this utility model provides an electrolytic hydrogen production system, which includes the hydrogen purification device described in the first aspect above.
[0024] The electrolytic hydrogen production system according to this utility model has similar technical effects to the hydrogen purification device described in the first aspect above. Attached Figure Description
[0025] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.
[0026] In the attached image:
[0027] Figure 1 This is a schematic diagram of a hydrogen purification device according to one embodiment of the present invention.
[0028] Explanation of reference numerals in the attached figures:
[0029] 100: Hydrogen purification device; 110: Gas-liquid separation device
[0030] 111: First level gauge; 112: Liquid outlet.
[0031] 113: Liquid discharge pipe; 114: First control valve
[0032] 120: Water collection device; 121: Second level gauge
[0033] 122: Water collection inlet; 123: Water collection outlet
[0034] 124: Water collection and discharge pipe; 125: Second control valve
[0035] 130: Water seal discharge device; 131: Third level gauge
[0036] 132: Emission Inlet 133: Emission Outlet
[0037] 134: Discharge line 135: Third control valve Detailed Implementation
[0038] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.
[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.
[0040] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.
[0041] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.
[0042] This invention provides both a hydrogen purification device 100 and an electrolytic hydrogen production system incorporating the hydrogen purification device 100. The electrolytic hydrogen production system includes an electrolytic cell with a hydrogen-side exhaust port.
[0043] refer to Figure 1 The hydrogen purification device 100 of this utility model includes at least one set of gas-water separation device 110, water collection device 120, and water seal discharge device 130. Preferably, the hydrogen purification device 100 includes three sets of gas-water separation devices 110. In this embodiment, there are three sets of gas-water separation devices 110.
[0044] The gas-liquid separator 110 has an inlet that connects to the hydrogen-side exhaust port. It is equipped with a first level gauge 111, which has a first maximum liquid level and a first minimum liquid level. The level gauge 111 detects the liquid level within the gas-liquid separator 110. The gas-liquid separator 110 also has a liquid outlet 112, downstream of which is connected a liquid discharge pipe 113. A first control valve 114 is installed on the liquid discharge pipe 113. The first control valve 114 is signal-connected to the first level gauge 111, for example, by connecting the first control valve 114 to the first level gauge 111 via a controller (described in detail below). The first control valve 114 and the first level gauge 111 are used to control the liquid level in the gas-liquid separator 110 between the first maximum liquid level and the first minimum liquid level.
[0045] The water collection device 120 is also equipped with a second level gauge 121, which detects the liquid level in the water collection device. The water collection device 120 has a second maximum liquid level and a second minimum liquid level. The water collection device 120 has a water collection inlet 122 and a water collection outlet 123. The water collection inlet 122 is connected to a liquid discharge pipe 113, and a water collection discharge pipe 124 is connected downstream of the water collection outlet 123. A second control valve 125 is installed on the water collection discharge pipe 124. The second control valve 125 is signal-connected to the second level gauge 121. For example, the second control valve 125 is connected to the second level gauge 121 through a controller (described in detail below). The second control valve 125 and the second level gauge 121 are used to control the liquid level in the water collection device 120 between the second maximum liquid level and the second minimum liquid level.
[0046] More specifically, when three sets of gas-water separation devices 110 are installed, the three liquid discharge pipes 113 of the three sets of gas-water separation devices 110 can be connected to the water collection inlet 122 of the water collection device 120 by merging through a three-way valve or by merging through two two-way valves.
[0047] The water seal discharge device 130 has a discharge inlet 132 and a discharge outlet 133. The discharge inlet 132 is connected to the water collection and discharge pipe 124 of the water collection device 120. The water seal discharge device 130 is equipped with a third level gauge 131, which detects the liquid level in the water seal discharge device. The water seal discharge device 130 has a third maximum liquid level and a third minimum liquid level. The discharge outlet 133 is connected to a discharge pipe 134, and a third control valve 135 is installed on the discharge pipe 134. The third level gauge 131 is signal-connected to the third control valve 135, for example, the third level gauge 131 is connected to the third control valve 135 through a controller (described in detail below). The third level gauge 131 and the third control valve 135 are used to control the liquid level in the water seal discharge device 130 between the third maximum liquid level and the third minimum liquid level.
[0048] It should be noted that the discharge inlet 132 of the water seal discharge device 130 is always liquid-sealed, in other words, the discharge inlet 132 is below the third minimum liquid level to form a reliable liquid seal, thereby preventing hydrogen from leaking through the discharge outlet 133.
[0049] According to the hydrogen purification device 100 of this application, by adding a water seal discharge device 130 and setting liquid level detection and control on the gas-water separation device 110, the water collection device 120 and the water seal discharge device 130, a three-stage discharge of water can be achieved, which can not only effectively prevent hydrogen leakage, but also achieve the effect of pressure reduction.
[0050] Specifically, when the condensate in the gas-liquid separator 110 reaches the first maximum liquid level, the first level gauge 111 sends a signal to the first control valve 114, which opens, allowing the condensate to drain into the water collection device 120, preventing liquid condensate from re-mixing into the hydrogen and affecting the drying effect. When the condensate in the gas-liquid separator 110 is discharged to the first minimum liquid level, the first control valve 114 closes to prevent the liquid level in the gas-liquid separator 110 from falling below the set low liquid level, thus preventing hydrogen from entering the water collection device 120.
[0051] Preferably, the water collection inlet 122 of the water collection device 120 is lower than the liquid outlet 112 of the gas-liquid separator 110. Therefore, the condensate in the gas-liquid separator 110 can be discharged into the water collection device 120 under the combined action of system pressure and gravity. It can be understood that since the liquid outlet 112 of the gas-liquid separator 110 is lower than its inlet, the condensate can collect under gravity.
[0052] When the condensate in the water collection device 120 reaches the second highest liquid level, the second control valve 125 opens, and the condensate is discharged into the water seal discharge device 130. When the condensate in the water collection device 120 is discharged to the second lowest liquid level, the second control valve 125 closes. In this way, the condensate undergoes two-stage discharge: through the gas-liquid separator 110 to the water collection device 120, and then through the water seal discharge device 130. The final discharged condensate contains almost no hydrogen, ensuring that the final discharge point, such as a sewer, is free of hydrogen.
[0053] Preferably, the discharge inlet 132 of the water seal discharge device 130 is lower than the water collection outlet 123 of the water collection device 120. Therefore, condensate in the water collection device 120 can be discharged into the water seal discharge device 130 under the combined action of system pressure and gravity. It can be understood that since the water collection outlet 123 of the water collection device 120 is lower than the water collection inlet 122, condensate can collect under gravity.
[0054] The upper part of the water seal discharge device 130 is connected to the atmosphere, and its interior is under normal pressure. The discharge outlet 133 of the water seal discharge device 130 is lower than the discharge inlet 132 of the water seal discharge device 130. When the liquid level in the water seal discharge device 130 reaches the third highest liquid level, the third control valve 135 opens, and the condensate is automatically discharged under gravity, slowly flowing into the ditch; when the liquid level in the water seal discharge device 130 reaches the third lowest liquid level, the third control valve 135 closes.
[0055] As one implementation, the first control valve 114 and the second control valve 125 are signal-interlocked, preventing them from opening simultaneously. Similarly, the third control valve 135 is signal-interlocked with the second control valve 125, preventing them from opening simultaneously. This effectively prevents hydrogen from flowing with the condensate to the next stage of equipment due to excessive pressure.
[0056] In summary, the three-stage discharge process strictly controls the liquid levels of the gas-liquid separator 110, water collection device 120, and water seal discharge device 130 during condensate drainage, effectively preventing hydrogen leakage. The three-stage interlocking achieves a pressure reduction effect, thus providing important protection for product safety.
[0057] The first level gauge 111, the second level gauge 121, and the third level gauge 131 can be float-type level gauges or differential pressure level gauges; the first control valve 114, the second control valve 125, and the third control valve 135 can be solenoid valves or pneumatic valves.
[0058] Each of the aforementioned level gauges is directly signal-connected to its corresponding solenoid valve. Alternatively, in other embodiments, the hydrogen purification device may also include a controller. The first control valve 114 and the first level gauge 111, the second control valve 125 and the second level gauge 121, and the third control valve 135 and the third level gauge 131 may also be signal-connected via the controller. The first level gauge 111, the second level gauge 121, and the third level gauge 131 respectively send the detected level signals to the controller. Based on the received level signals, the controller controls the first control valve 114, the second control valve 125, and the third control valve 135 to operate (start or close), as specifically configured below:
[0059] When the first level gauge 111 detects that the liquid level in the gas-liquid separator has reached the first maximum level, the first level gauge sends a level signal to the controller, and the controller opens the first control valve 114; when the liquid level is detected to drop to the first minimum level, the first level gauge sends the signal to the controller, and the controller controls the first control valve 114 to close.
[0060] When the second level gauge 121 detects that the liquid level in the water collection device reaches the second highest liquid level, the second level gauge 121 sends a liquid level signal to the controller, and the controller controls the second control valve 125 to open; when the second level gauge detects that the liquid level drops to the second lowest liquid level, the second level gauge 121 sends a liquid level signal to the controller, and the controller controls the second control valve 125 to close.
[0061] When the third level gauge 131 detects that the liquid level in the water seal discharge device has reached the third highest level, the third level gauge 131 sends a signal to the third control valve 135, and the controller controls the third control valve 135 to open; when the liquid level is detected to drop to the third lowest level, the third level gauge 131 sends a signal to the third control valve 135, and the controller controls the third control valve 135 to close.
[0062] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.
[0063] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This utility model is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.
Claims
1. A hydrogen purification apparatus for an electrolytic hydrogen production system, the electrolytic hydrogen production system comprising an electrolytic cell having a hydrogen-side exhaust port, characterized in that, The hydrogen purification device includes: At least one gas-liquid separation device, wherein the inlet of the gas-liquid separation device is connected to the hydrogen-side exhaust port, the gas-liquid separation device is equipped with a first liquid level gauge, the gas-liquid separation device also has a liquid outlet, a liquid discharge pipe is connected downstream of the liquid outlet, a first control valve is provided on the liquid discharge pipe, and the first control valve is signal-connected to the first liquid level gauge; A water collection device is provided, which is also equipped with a second level gauge. The water collection device has a water collection inlet and a water collection outlet. The water collection inlet is connected to the liquid discharge pipe. A water collection discharge pipe is connected downstream of the water collection outlet. A second control valve is provided on the water collection discharge pipe. The second control valve is signal-connected to the second level gauge. A water seal discharge device has a discharge inlet and a discharge outlet. The discharge inlet is connected to the water collection discharge pipe of the water collection device. The water seal discharge device is equipped with a third level gauge. The discharge outlet is connected to a discharge pipeline. A third control valve is installed on the discharge pipeline. The third level gauge is signal-connected to the third control valve.
2. The hydrogen purification apparatus according to claim 1, characterized in that, The first control valve is signal-interlocked with the second control valve; and / or the third control valve is signal-interlocked with the second control valve.
3. The hydrogen purification apparatus according to claim 1, characterized in that, The hydrogen purification device further includes a controller, which is signal-connected to the first level gauge, the second level gauge, the third level gauge, the first control valve, the second control valve, and the third control valve. The gas-liquid separator has a first maximum liquid level and a first minimum liquid level. The first liquid level gauge detects the liquid level in the gas-liquid separator. When the liquid level reaches the first maximum liquid level, the controller controls the first control valve to open. When the liquid level reaches the first minimum liquid level, the controller controls the first control valve to close. The water collection device has a second highest liquid level and a second lowest liquid level. The second liquid level gauge detects the liquid level in the water collection device. When the liquid level reaches the second highest liquid level, the second control valve opens. When the liquid level reaches the second lowest liquid level, the controller controls the second control valve to close. The water seal discharge device has a third highest liquid level and a third lowest liquid level. The third liquid level gauge detects the liquid level in the water seal discharge device. When the detected liquid level reaches the third highest liquid level, the third control valve opens. When the detected liquid level reaches the third lowest liquid level, the third control valve closes.
4. The hydrogen purification apparatus according to claim 1, characterized in that, The water seal discharge device is connected to the atmosphere, the discharge outlet of the water seal discharge device is lower than the discharge inlet of the water seal discharge device, the water seal discharge device has a third minimum liquid level, and the discharge inlet is lower than the third minimum liquid level.
5. The hydrogen purification apparatus according to claim 4, characterized in that, The discharge inlet of the water seal discharge device is lower than the water collection outlet of the water collection device.
6. The hydrogen purification apparatus according to claim 5, characterized in that, The water collection outlet of the water collection device is lower than the water collection inlet of the water collection device.
7. The hydrogen purification apparatus according to claim 6, characterized in that, The water inlet of the water collection device is lower than the liquid outlet of the gas-water separator.
8. The hydrogen purification apparatus according to claim 7, characterized in that, The liquid outlet of the gas-liquid separator is lower than the inlet of the gas-liquid separator.
9. The hydrogen purification apparatus according to any one of claims 1-8, characterized in that, The hydrogen purification device includes three sets of gas-water separation devices, which are connected in parallel.
10. An electrolytic hydrogen production system, characterized in that, The electrolytic hydrogen production system includes a hydrogen purification device according to any one of claims 1-9.