Hydrogen production and liquid separation system of inland river hydrogen production and hydrogenation wharf
By designing a hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal, the problem of removing moisture from hydrogen was solved, achieving efficient separation of hydrogen and reuse of pure water, meeting the hydrogen refueling needs of ships, and improving resource utilization efficiency.
Patent Information
- Application Number
- CN202423310480.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-26
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing technologies, it is difficult to effectively remove the moisture entrained in hydrogen during the hydrogen production process, resulting in hydrogen quality that does not meet the requirements for ship refueling and water resources not being effectively utilized.
A hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal was designed, including components such as an electrolyzer, hydrogen-water separator, oxygen-water separator, cooler, and gas-water separator. Through multi-stage gas-liquid separation and a circulating cooling water system, efficient separation of hydrogen and reuse of pure water are achieved.
It achieves efficient hydrogen separation, meets the hydrogen refueling needs of ships, and achieves resource conservation by reusing pure water, thereby improving the overall efficiency of the hydrogen production system.
Smart Images
Figure CN223660247U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydrogen production and refueling technology, specifically to a hydrogen gas-liquid separation system for an inland waterway hydrogen production and refueling terminal. Background Technology
[0002] With the development and operation of inland waterway hydrogen fuel cell powered ships, there is a need to provide supporting hydrogen production and refueling stations for the ships. Currently, the initial selection for marine hydrogen fuel cells is 500kW. During high-power navigation, the hydrogen fuel cell and lithium battery work together to propel the motor. During low-power navigation, the hydrogen fuel cell supplies power to the propulsion motor, and the excess power charges the lithium battery.
[0003] Currently, the main hydrogen production process uses water electrolysis. Based on the principle of water electrolysis, the raw material pure water in the electrolyzer decomposes under the action of direct current, producing hydrogen and oxygen on the cathode and anode surfaces of each electrolysis chamber, respectively. The gases produced from the electrolysis chambers, carrying pure water vapor, flow into their respective gas channels through hydrogen and oxygen outlets above each electrode plate for collection. After being collected in the hydrogen and oxygen gas chambers, they flow into the gas separation system through hydrogen and oxygen pipelines, respectively. To ensure that the hydrogen produced meets the requirements for normal ship refueling, moisture needs to be removed from the hydrogen; therefore, a corresponding gas-liquid separation system is required to meet the separation requirements. Utility Model Content
[0004] To address the existing technical problems, the main objective of this utility model is to provide a hydrogen gas-liquid separation system for inland waterway hydrogen production and refueling terminals. This system can separate the hydrogen produced during the hydrogen production process in the hydrogen production station into gas and liquid components, enabling it to meet the requirements for subsequent ship refueling. Furthermore, the separated pure water can be collected for reuse, thereby achieving the goal of resource conservation.
[0005] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: A hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal includes an electrolytic cell for hydrogen production, connected to a pure water refueling system; a coarse hydrogen pipe of the electrolytic cell is connected to a hydrogen-water separator, the hydrogen-water separator is connected to a hydrogen cooler, the hydrogen cooler is connected to a first gas-water separator, and a hydrogen outlet pipe is connected to the first gas-water separator; a coarse oxygen pipe of the electrolytic cell is connected to an oxygen-water separator, the oxygen-water separator is connected to an oxygen cooler, the oxygen cooler is connected to a second gas-water separator, and an oxygen outlet pipe is connected to the second gas-water separator.
[0006] The pure water filling system includes a pure water tank, which is connected to a pure water circulation pump via a first pure water pipe. The outlet of the pure water circulation pump is connected to the electrolytic cell via a pure water heat exchanger. A pure water supply pipe is connected to the pure water tank.
[0007] The pure water heat exchanger is connected to a circulating cooling water supply pipe and a circulating cooling water outlet pipe.
[0008] The hydrogen-water separator and oxygen-water separator are connected to the pure water replenishment system;
[0009] The pure water replenishment system includes a pure water replenishment pump connected to the pure water tank. The outlet of the pure water replenishment pump is connected to the pure water replenishment main pipe. The pure water replenishment main pipe is connected to the hydrogen-water separator through the first branch replenishment pipe. The pure water replenishment main pipe is connected to the oxygen-water separator through the second branch replenishment pipe.
[0010] The bottoms of the hydrogen-water separator and the oxygen-water separator are connected to the pure water tank via a pure water return pipe, and a substandard pure water discharge pipe is connected to the pure water return pipe via a valve.
[0011] The hydrogen cooler and oxygen cooler are connected to circulating cooling water inlet pipes and circulating cooling water outlet pipes.
[0012] The hydrogen-water separator is connected to the hydrogen cooler via a first hydrogen gas connecting pipe; the hydrogen cooler is connected to the hydrogen-water separator via a first pure water return pipe; and the first gas-water separator is connected to the hydrogen-water separator via a second pure water return pipe.
[0013] The oxygen-water separator is connected to the oxygen cooler via a first oxygen connecting pipe; the oxygen cooler is connected to the oxygen-water separator via a third pure water return pipe; and the second gas-water separator is connected to the oxygen-water separator via a fourth pure water return pipe.
[0014] The bottom of the pure water tank is connected to a pure water discharge pipe.
[0015] The present invention has the following beneficial effects:
[0016] 1. The system of this utility model can perform gas-liquid separation of hydrogen produced in the hydrogen production process in the hydrogen production station, so that it can meet the requirements of subsequent ship hydrogen refueling; and by collecting the separated pure water, it can be reused, thereby saving resources.
[0017] 2. The pure water supply system described above can be used to supply pure water to the electrolyzer, which can then be used to produce hydrogen.
[0018] 3. The aforementioned circulating cooling water supply pipe and circulating cooling water outlet pipe can be used to cool and heat the pure water heat exchanger.
[0019] 4. The pure water replenishment system described above can be used to replenish water to the hydrogen-water separator and the oxygen-water separator, thereby ensuring the normal gas-water separation effect of both.
[0020] 5. The pure water return pipe described above allows for the reuse of the pure water produced after water-air separation, thus achieving excellent resource utilization. The substandard pure water discharge pipe can be used to treat and discharge substandard pure water.
[0021] 6. The above-mentioned circulating cooling water inlet and outlet pipes can be used to cool the hydrogen cooler and oxygen cooler.
[0022] 7. The first pure water return pipe described above can return the condensed pure water to the interior of the hydrogen-water separator, and the second pure water return pipe can return the condensed pure water from the first gas-water separator to the interior of the hydrogen-water separator.
[0023] 8. The condensed pure water can be returned to the interior of the oxygen-water separator through the third pure water return pipe mentioned above, and the condensed pure water from the second gas-water separator can be returned to the interior of the oxygen-water separator through the second pure water return pipe. Attached Figure Description
[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0025] Figure 1 This is a diagram of the overall system of this utility model.
[0026] In the diagram: 1. Circulating cooling water outlet pipe; 2. Circulating cooling water inlet pipe; 3. First hydrogen connection pipe; 4. Hydrogen cooler; 5. First pure water return pipe; 6. First branch water supply pipe; 7. Hydrogen-water separator; 8. First gas-water separator; 9. Second pure water return pipe; 10. Second gas-water separator; 11. Fourth pure water return pipe; 12. First oxygen connection pipe; 13. Hydrogen outlet pipe; 14. Oxygen outlet pipe; 15. Third pure water return pipe; 16. Second branch water supply pipe. 6. Oxygen-water separator; 17. Pure water makeup main pipe; 18. Pure water circulation pump; 19. Pure water heat exchanger; 20. Circulating cooling water supply pipe; 21. Circulating cooling water outlet pipe; 22. Crude hydrogen pipe; 23. Pure water return pipe; 24. Crude oxygen pipe; 25. Electrolytic cell; 26. First pure water pipe; 27. Pure water tank; 28. Pure water makeup pump; 29. Unqualified pure water discharge pipe; 30. Pure water supply pipe; 31. Pure water discharge pipe; 32. Oxygen cooler; 33. Detailed Implementation
[0027] The embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0028] See Figure 1The hydrogen production gas-liquid separation system at the inland waterway hydrogen production and refueling terminal includes an electrolyzer 26 for hydrogen production, connected to a pure water refueling system; a coarse hydrogen pipe 23 of the electrolyzer 26 is connected to a hydrogen-water separator 7, which is connected to a hydrogen cooler 4, which is connected to a first gas-water separator 8, with a hydrogen outlet pipe 13 connected to the first gas-water separator 8; a coarse oxygen pipe 25 of the electrolyzer 26 is connected to an oxygen-water separator 17, which is connected to an oxygen cooler 33, which is connected to a second gas-water separator 10, with an oxygen outlet pipe 14 connected to the second gas-water separator 10. This system can perform gas-liquid separation on the hydrogen produced during the hydrogen production process at the hydrogen production station, ensuring it meets the requirements for subsequent ship refueling; and by collecting the separated pure water for reuse, it achieves resource conservation.
[0029] Furthermore, the pure water supply system includes a pure water tank 28, which is connected to a pure water circulation pump 19 via a first pure water pipe 27. The outlet of the pure water circulation pump 19 is connected to the electrolytic cell 26 via a pure water heat exchanger 20. A pure water supply pipe 31 is connected to the pure water tank 28. This pure water supply system can be used to supply pure water to the electrolytic cell 26 for hydrogen production. During operation, the pure water stored in the pure water tank 28 is pumped by the pure water circulation pump 19, heat-exchanged by the pure water heat exchanger 20, and then transported to the electrolytic cell 26 for hydrogen production through electrolysis.
[0030] Furthermore, the pure water heat exchanger 20 is connected to a circulating cooling water supply pipe 21 and a circulating cooling water outlet pipe 22. The circulating cooling water supply pipe 21 and the circulating cooling water outlet pipe 22 can be used to cool and exchange heat in the pure water heat exchanger 20.
[0031] Furthermore, the hydrogen-water separator 7 and the oxygen-water separator 17 are connected to a pure water replenishment system. This system includes a pure water replenishment pump 29 connected to a pure water tank 28. The outlet of the pure water replenishment pump 29 is connected to a main pure water replenishment pipe 18. The main pure water replenishment pipe 18 is connected to the hydrogen-water separator 7 via a first branch pipe 6, and to the oxygen-water separator 17 via a second branch pipe 16. This pure water replenishment system can replenish water to both the hydrogen-water separator 7 and the oxygen-water separator 17, ensuring their proper gas-water separation. In operation, when water replenishment is needed, the pure water replenishment pump 29 pumps water from inside the pure water tank 28 to the main pure water replenishment pipe 18, which then pumps it to the first branch pipe 6 and the second branch pipe 16. The water is then supplied to the hydrogen-water separator 7 and the oxygen-water separator 17 via the first and second branch pipes, respectively.
[0032] Furthermore, the bottoms of the hydrogen-water separator 7 and the oxygen-water separator 17 are connected to the pure water tank 28 via a pure water return pipe 24. A defective pure water discharge pipe 30 is connected to the pure water return pipe 24 via a valve. The pure water return pipe 24 allows the pure water produced after water-gas separation to be reused, thus achieving good resource utilization. The defective pure water discharge pipe 30 can be used to discharge and treat defective pure water.
[0033] Furthermore, the hydrogen cooler 4 and the oxygen cooler 33 are connected to a circulating cooling water inlet pipe 2 and a circulating cooling water outlet pipe 1. The circulating cooling water inlet pipe 2 and the circulating cooling water outlet pipe 1 can be used to cool the hydrogen cooler 4 and the oxygen cooler 33.
[0034] Furthermore, the hydrogen-water separator 7 is connected to the hydrogen cooler 4 via the first hydrogen gas connecting pipe 3; the hydrogen cooler 4 is connected to the hydrogen-water separator 7 via the first pure water return pipe 5; and the first gas-water separator 8 is connected to the hydrogen-water separator 7 via the second pure water return pipe 9. The first pure water return pipe 5 allows condensed pure water to flow back into the hydrogen-water separator 7, and the second pure water return pipe 9 allows condensed pure water from the first gas-water separator 8 to flow back into the hydrogen-water separator 7.
[0035] Furthermore, the oxygen-water separator 17 is connected to the oxygen cooler 33 via the first oxygen connecting pipe 12; the oxygen cooler 33 is connected to the oxygen-water separator 17 via the third pure water return pipe 15; and the second gas-water separator 10 is connected to the oxygen-water separator 17 via the fourth pure water return pipe 11. The third pure water return pipe 15 allows condensed pure water to flow back into the oxygen-water separator 17, and the second pure water return pipe 9 allows condensed pure water from the second gas-water separator 10 to flow back into the oxygen-water separator 17.
[0036] Furthermore, a pure water discharge pipe 32 is connected to the bottom end of the pure water tank 28. The pure water discharge pipe 32 can be used to empty the pure water tank 28.
[0037] The working process and principle of this utility model:
[0038] In the specific operation, hydrogen is produced by electrolyzing water in electrolytic cell 26. During the preparation process, the generated hydrogen gas is transported to hydrogen-water separator 7 through coarse hydrogen gas pipe 23 for gas-water separation. The separated hydrogen gas then enters hydrogen cooler 4, where it is cooled before entering first gas-water separator 8. After passing through first gas-water separator 8, it is output to hydrogen outlet pipe 13 for further processing. During this process, the condensed pure water produced by hydrogen cooler 4 and first gas-water separator 8 enters hydrogen-water separator 7. The oxygen produced by the electrolytic cell 26 enters the oxygen-water separator 17 through the coarse oxygen pipe 25, then enters the oxygen cooler 33, and then enters the second gas-water separator 10. Finally, it enters the oxygen outlet pipe 14 for discharge. During this process, the pure water condensed by the oxygen cooler 33 and the second gas-water separator 10 flows back into the oxygen-water separator 17. The water in the hydrogen-water separator 7 and the oxygen-water separator 17 flows back to the pure water tank 28 for storage.
Claims
1. A hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal, characterized in that, The system includes an electrolyzer (26) for hydrogen production, and a pure water filling system connected to the electrolyzer (26); a coarse hydrogen pipe (23) of the electrolyzer (26) is connected to a hydrogen-water separator (7), the hydrogen-water separator (7) is connected to a hydrogen cooler (4), the hydrogen cooler (4) is connected to a first gas-water separator (8), and a hydrogen outlet pipe (13) is connected to the first gas-water separator (8); a coarse oxygen pipe (25) of the electrolyzer (26) is connected to an oxygen-water separator (17), the oxygen-water separator (17) is connected to an oxygen cooler (33), the oxygen cooler (33) is connected to a second gas-water separator (10), and an oxygen outlet pipe (14) is connected to the second gas-water separator (10).
2. The hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal according to claim 1, characterized in that: The pure water filling system includes a pure water tank (28), which is connected to a pure water circulation pump (19) via a first pure water pipe (27). The outlet of the pure water circulation pump (19) is connected to an electrolytic cell (26) via a pure water heat exchanger (20). A pure water supply pipe (31) is connected to the pure water tank (28).
3. The hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal according to claim 2, characterized in that: The pure water heat exchanger (20) is connected to a circulating cooling water supply pipe (21) and a circulating cooling water outlet pipe (22).
4. The hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal according to claim 2, characterized in that: The hydrogen-water separator (7) and the oxygen-water separator (17) are connected to the pure water replenishment system; The pure water replenishment system includes a pure water replenishment pump (29) connected to a pure water tank (28). The outlet of the pure water replenishment pump (29) is connected to a pure water replenishment main pipe (18). The pure water replenishment main pipe (18) is connected to a hydrogen water separator (7) through a first branch replenishment pipe (6). The pure water replenishment main pipe (18) is connected to an oxygen water separator (17) through a second branch replenishment pipe (16).
5. The hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal according to claim 4, characterized in that: The bottom of the hydrogen-water separator (7) and the oxygen-water separator (17) are connected to the pure water tank (28) through a pure water return pipe (24), and a substandard pure water discharge pipe (30) is connected to the pure water return pipe (24) through a valve.
6. The hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal according to claim 1, characterized in that: The hydrogen cooler (4) and oxygen cooler (33) are connected to a circulating cooling water inlet pipe (2) and a circulating cooling water outlet pipe (1).
7. The hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal according to claim 6, characterized in that: The hydrogen-water separator (7) is connected to the hydrogen cooler (4) through the first hydrogen gas connecting pipe (3); the hydrogen cooler (4) is connected to the hydrogen-water separator (7) through the first pure water return pipe (5); and the first gas-water separator (8) is connected to the hydrogen-water separator (7) through the second pure water return pipe (9).
8. The hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal according to claim 6, characterized in that: The oxygen-water separator (17) is connected to the oxygen cooler (33) through the first oxygen connecting pipe (12); the oxygen cooler (33) is connected to the oxygen-water separator (17) through the third pure water return pipe (15); and the second gas-water separator (10) is connected to the oxygen-water separator (17) through the fourth pure water return pipe (11).
9. The hydrogen production gas-liquid separation system for an inland waterway hydrogen production and refueling terminal according to claim 5, characterized in that: The bottom of the pure water tank (28) is connected to a pure water discharge pipe (32).