Highly-integrated container type hydrogen production system suitable for offshore platform

Abstract

The utility model relates to a highly integrated container type hydrogen production system suitable for an offshore platform. Comprising a hydrogen production body electrolytic bath, a 30% KOH heat exchanger is arranged above the hydrogen production body electrolytic bath, a cooling water regulating valve is arranged at one end of the hydrogen production body electrolytic bath, a hydrogen / oxygen drainer is arranged at one end of the hydrogen production body electrolytic bath, and a 30% KOH solution circulating pump is arranged at one end of the hydrogen production body electrolytic bath. The hydrogen production device has extremely high integration level, the single container is used for loading the electrolytic bath and the post-treatment system required by hydrogen production, and the pipeline interface is reserved on the side surface of the container, so that the field installation is greatly facilitated; the hydrogen production electrolytic cell, the gas-liquid separation skid and the gas purification skid are placed in one container to form an independent hydrogen production skid, and compared with an existing product, the integrated level is higher. And the special interface is arranged on the side surface of the container, so that field installation is more convenient, and hydrogen can be produced only by providing water, electricity and gas on site.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production systems, and particularly relates to a highly integrated containerized hydrogen production system applicable to offshore platforms. Background Technique

[0002] The Dutch PosHYdon project is the world's first offshore wind power hydrogen production project. The PosHYdon project based on the Q13a platform is the world's first offshore wind power hydrogen production project, jointly undertaken by multiple Dutch enterprises and institutions to promote emission reduction and establish a new energy model in the North Sea. Neptune Energy's Q13a platform is the first fully electrified oil and gas platform in the Dutch North Sea and will be transformed into a hydrogen production platform in the PosHYdon project. The containerized hydrogen production equipment is very small and can be accommodated by the vast majority of offshore platforms.

[0003] At the current stage, the platform power is temporarily supplied by connecting to the onshore power grid through submarine cables (and simulated according to the fluctuating offshore wind power generation). In the future, it will be supplied by a nearby offshore wind farm. The hydrogen production technology in the above-mentioned technology is slightly complicated. Now, a highly integrated containerized hydrogen production system applicable to offshore platforms is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a highly integrated containerized hydrogen production system applicable to offshore platforms is proposed. The technical solution adopted by the utility model is as follows:

[0005] A highly integrated containerized hydrogen production system applicable to offshore platforms, including a hydrogen production main electrolyzer. Above the hydrogen production main electrolyzer, there is a 30% KOH heat exchanger. At one end of the hydrogen production main electrolyzer, there is a cooling water regulating valve. At one end of the hydrogen production main electrolyzer, there is a hydrogen / oxygen drainer. At one end of the hydrogen production main electrolyzer, there is a 30% KOH solution circulation pump, and the 30% KOH solution circulation pump is arranged close to the lower part of the hydrogen / oxygen drainer. At one end of the hydrogen production main electrolyzer, there is a hydrogen / oxygen water separator. At one end of the hydrogen production main electrolyzer, there is a hydrogen / oxygen gas cooler, which is arranged above the hydrogen / oxygen water separator. At one end of the hydrogen production main electrolyzer, there is a hydrogen / oxygen gas-liquid separator, which is arranged close to the hydrogen / oxygen gas cooler. At one end of the hydrogen production main electrolyzer, close to one end of the hydrogen / oxygen water separator, there is a hydrogen / oxygen gas supplementary dropper. Above the hydrogen production main electrolyzer, there is a hydrogen purification deoxidation tower, and the hydrogen purification deoxidation tower is arranged close to the hydrogen / oxygen gas supplementary dropper. On one side of the hydrogen purification deoxidation tower, there is a hydrogen purification drying tower. On one side of the hydrogen purification drying tower, there is a hydrogen purification cooler, which is arranged on the side of the hydrogen purification drying tower far from the hydrogen purification deoxidation tower. On one side of the hydrogen purification cooler, there is a hydrogen purification regeneration tower, and the hydrogen purification regeneration tower is arranged on the side of the hydrogen purification cooler far from the hydrogen purification drying tower. On one side of the hydrogen purification regeneration tower, there is a hydrogen purification heater, and the hydrogen purification heater is arranged on the side of the hydrogen purification regeneration tower far from the hydrogen purification cooler. Above the 30% KOH heat exchanger, there is a hydrogen gas vent flame arrester. Above the 30% KOH heat exchanger, there is a hydrogen purification self-standing pressure stabilizing valve. Above the 30% KOH heat exchanger, there is a hydrogen outlet regulating valve, and the hydrogen outlet regulating valve is arranged close to the hydrogen purification self-standing pressure stabilizing valve. On one side of the hydrogen purification self-standing pressure stabilizing valve, there is a hydrogen purification gas filter.

[0006] As an improvement, the hydrogen / oxygen drainer is arranged at one end of the hydrogen production main electrolyzer far from the cooling water regulating valve.

[0007] As an improvement, the hydrogen / oxygen water separator is arranged above and close to the hydrogen / oxygen drainer at one end of the hydrogen production main electrolyzer.

[0008] The beneficial effects of the present utility model are as follows:

[0009] The highly integrated containerized hydrogen production system applicable to offshore platforms of the present utility model has a very high degree of integration. A single container loads the electrolyzer required for hydrogen production and the post-treatment system, and there are pipeline interfaces left on the side of the container, which greatly facilitates on-site installation. The hydrogen production electrolyzer, the gas-liquid separation skid block, and the gas purification skid block are placed in a single container to form a separate hydrogen production skid block, which has a higher degree of integration compared with existing products. And there are special interfaces on the side of the container, which is more convenient for on-site installation. Only water, electricity, and gas need to be provided on-site to produce hydrogen. Description of the Drawings

[0010] Figure 1 This is the front view structural schematic diagram of the present utility model.

[0011] Corresponding table of reference numerals in the drawings:

[0012] 1. Hydrogen production main body electrolytic cell; 2. 30% KOH heat exchanger; 3. 30% KOH solution circulation pump; 4. Hydrogen / oxygen drainer; 5. Hydrogen / oxygen water separator; 6. Hydrogen / oxygen gas-liquid separator; 7. Hydrogen / oxygen gas cooler; 8. Hydrogen / oxygen gas make-up dropper; 9. Hydrogen purification deoxidation tower; 10. Hydrogen purification drying tower; 11. Hydrogen purification cooler; 12. Hydrogen purification regeneration tower; 13. Hydrogen purification heater; 14. Hydrogen gas vent flame arrester; 15. Hydrogen purification gas filter; 16. Hydrogen purification self-standing pressure stabilizing valve; 17. Hydrogen outlet regulating valve; 18. Cooling water regulating valve. Specific implementation manners

[0013] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0014] Embodiment: To solve the technical problems in the background art, the following is a kind of highly integrated containerized hydrogen production system applicable to offshore platforms:

[0015] Combined with Figure 1As shown in the figure, a highly integrated containerized hydrogen production system applicable to an offshore platform provided by the present utility model includes a hydrogen production main body electrolyzer 1. Above the hydrogen production main body electrolyzer 1, there is a 30% KOH heat exchanger 2. At one end of the hydrogen production main body electrolyzer 1, there is a cooling water regulating valve 18. At one end of the hydrogen production main body electrolyzer 1, there is a hydrogen / oxygen drainer 4. The hydrogen / oxygen drainer 4 is arranged at one end of the hydrogen production main body electrolyzer 1 away from the cooling water regulating valve 18. At one end of the hydrogen production main body electrolyzer 1, there is a 30% KOH solution circulation pump 3, and the 30% KOH solution circulation pump 3 is arranged close to the lower part of the hydrogen / oxygen drainer 4. At one end of the hydrogen production main body electrolyzer 1, there is a hydrogen / oxygen water separator 5. The hydrogen / oxygen water separator 5 is arranged at one end of the hydrogen production main body electrolyzer 1 close to the upper part of the hydrogen / oxygen drainer 4. At one end of the hydrogen production main body electrolyzer 1, there is a hydrogen / oxygen gas cooler 7, and it is arranged above the hydrogen / oxygen water separator 5. At one end of the hydrogen production main body electrolyzer 1, there is a hydrogen / oxygen gas-liquid separator 6, and it is arranged close to the hydrogen / oxygen gas cooler 7. At one end of the hydrogen production main body electrolyzer 1 close to one end of the hydrogen / oxygen water separator 5, there is a hydrogen / oxygen gas make-up dropper 8. Above the hydrogen production main body electrolyzer 1, there is a hydrogen purification deoxidation tower 9, and the hydrogen purification deoxidation tower 9 is arranged close to the hydrogen / oxygen gas make-up dropper 8. On one side of the hydrogen purification deoxidation tower 9, there is a hydrogen purification drying tower 10. On one side of the hydrogen purification drying tower 10, there is a hydrogen purification cooler 11, and it is arranged on the side of the hydrogen purification drying tower 10 away from the hydrogen purification deoxidation tower 9. On one side of the hydrogen purification cooler 11, there is a hydrogen purification regeneration tower 12, and the hydrogen purification regeneration tower 12 is arranged on the side of the hydrogen purification cooler 11 away from the hydrogen purification drying tower 10. On one side of the hydrogen purification regeneration tower 12, there is a hydrogen purification heater 13, and the hydrogen purification heater 13 is arranged on the side of the hydrogen purification regeneration tower 12 away from the hydrogen purification cooler 11. Above the 30% KOH heat exchanger 2, there is a hydrogen gas vent flame arrester 14. Above the 30% KOH heat exchanger 2, there is a hydrogen purification self-standing pressure stabilizing valve 16. Above the 30% KOH heat exchanger 2, there is a hydrogen outlet regulating valve 17, and the hydrogen outlet regulating valve 17 is arranged close to the hydrogen purification self-standing pressure stabilizing valve 16. On one side of the hydrogen purification self-standing pressure stabilizing valve 16, there is a hydrogen purification gas filter 15.

[0016] The working principle and usage process of the present utility model are as follows:

[0017] The usage steps are as follows:

[0018] 1. After alkaline water enters the hydrogen production main body electrolyzer 1, under the action of direct current, electrolysis occurs. A reduction reaction occurs at the cathode-solution interface, releasing hydrogen, and an oxidation reaction occurs at the anode-solution interface, releasing oxygen. The working pressure of the whole system is 1.6 Mpa, and the temperature of the alkaline solution is 85 ± 5 °C;

[0019] 2. The hydrogen / oxygen gas and electrolyte generated by the hydrogen production main electrolyzer 1 first pass through the 30% KOH heat exchanger 2 under the action of the 30% KOH solution circulation pump 3 and gas lift, and then enter the hydrogen / oxygen gas-liquid separator 6 within the hydrogen production framework. Gas-liquid separation is carried out under the action of gravity. The separated hydrogen / oxygen gas is cooled to 30°C - 40°C respectively through the hydrogen / oxygen gas cooler 7. After the free water is removed through the hydrogen / oxygen gas replenishing and dropping device 8, the gas enters the hydrogen / oxygen water separator 5 to separate out some liquid again. After the separated gas rises to the rated pressure or given pressure under the action of the thin film regulating valve, it is sent to the next process. The liquid enters the hydrogen / oxygen drainer 4 through the separation of the hydrogen / oxygen water separator 5 and is discharged regularly. The electrolyte at the lower part of the hydrogen separator is pumped out by the 30% KOH solution circulation pump 3, and the mechanical impurities in the electrolyte are filtered out through the lye filter. The heat generated by the decomposition of H2O by the 30% KOH heat exchanger 2 is carried out by the cooling water, ensuring the constant working temperature of the electrolyzer, and then returns to the hydrogen production main electrolyzer 1 to complete the circulation of the hydrogen / oxygen side electrolyte;

[0020] 3. The hydrogen separated by the separation skid enters the hydrogen purification unit. First, it enters the hydrogen purification deoxidation tower 9 for deoxidation. The deoxidized gas will generate some water and enter the hydrogen purification cooler 11 along with the gas to condense the water in the gas. The condensed gas enters the hydrogen purification water separator for gas-water separation. Part of the qualified product hydrogen after separation is filtered through the hydrogen purification gas filter 15, and then directly transported to the client through the hydrogen purification self-standing pressure stabilizing valve 16 and the hydrogen outlet regulating valve 17. Another part of the gas enters the hydrogen purification regeneration tower 12 to blow and cool the interior of the equipment. The function of the cooling water regulating valve 18 is to adjust the amount of cooling water supplied to the whole system.

[0021] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly integrated containerized hydrogen production system applicable to offshore platforms, characterized in that, It includes a hydrogen production main electrolyzer (1). Above the hydrogen production main electrolyzer (1), there is a 30% KOH heat exchanger (2). At one end of the hydrogen production main electrolyzer (1), there is a cooling water regulating valve (18). At one end of the hydrogen production main electrolyzer (1), there is a hydrogen / oxygen drainer (4). At one end of the hydrogen production main electrolyzer (1), there is a 30% KOH solution circulation pump (3), and the 30% KOH solution circulation pump (3) is arranged close to the lower part of the hydrogen / oxygen drainer (4). At one end of the hydrogen production main electrolyzer (1), there is a hydrogen / oxygen water separator (5). At one end of the hydrogen production main electrolyzer (1), there is a hydrogen / oxygen gas cooler (7), and it is arranged above the hydrogen / oxygen water separator (5). At one end of the hydrogen production main electrolyzer (1), there is a hydrogen / oxygen gas-liquid separator (6), and it is arranged close to the hydrogen / oxygen gas cooler (7). At one end of the hydrogen production main electrolyzer (1) close to one end of the hydrogen / oxygen water separator (5), there is a hydrogen / oxygen gas make-up dropper (8). Above the hydrogen production main electrolyzer (1), there is a hydrogen purification deoxidation tower (9), and the hydrogen purification deoxidation tower (9) is arranged close to the hydrogen / oxygen gas make-up dropper (8). On one side of the hydrogen purification deoxidation tower (9), there is a hydrogen purification drying tower (10). On one side of the hydrogen purification drying tower (10), there is a hydrogen purification cooler (11), and it is arranged on the side of the hydrogen purification drying tower (10) far from the hydrogen purification deoxidation tower (9). On one side of the hydrogen purification cooler (11), there is a hydrogen purification regeneration tower (12), and the hydrogen purification regeneration tower (12) is arranged on the side of the hydrogen purification cooler (11) far from the hydrogen purification drying tower (10). On one side of the hydrogen purification regeneration tower (12), there is a hydrogen purification heater (13), and the hydrogen purification heater (13) is arranged on the side of the hydrogen purification regeneration tower (12) far from the hydrogen purification cooler (11). Above the 30% KOH heat exchanger (2), there is a hydrogen gas vent flame arrester (14). Above the 30% KOH heat exchanger (2), there is a hydrogen purification self-acting pressure stabilizing valve (16). Above the 30% KOH heat exchanger (2), there is a hydrogen outlet regulating valve (17), and the hydrogen outlet regulating valve (17) is arranged close to the hydrogen purification self-acting pressure stabilizing valve (16). On one side of the hydrogen purification self-acting pressure stabilizing valve (16), there is a hydrogen purification gas filter (15).

2. The highly integrated containerized hydrogen production system applicable to an offshore platform according to claim 1, wherein The hydrogen / oxygen drainer (4) is arranged at one end of the hydrogen production main electrolyzer (1) far from the cooling water regulating valve (18).

3. The highly integrated containerized hydrogen production system applicable to an offshore platform according to claim 2, characterized in that, The hydrogen / oxygen water separator (5) is arranged above the hydrogen / oxygen drainer (4) at one end of the hydrogen production main electrolyzer (1).

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