Small PEM water electrolysis hydrogen production combined membrane tube purification system and purification method

By using membrane tube purification technology in small PEM electrolytic hydrogen production systems, the problems of low purity and high complexity of hydrogen in traditional systems are solved, and an efficient and simplified hydrogen purification process is achieved, which is suitable for small system requirements.

CN119640290APending Publication Date: 2025-03-18YANTAI HAORUN ENERGY TECH CO LTD
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Patent Information

Application Number
CN202411913348.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

Traditional PEM electrolytic hydrogen production equipment generates impurity gas during operation, affecting the purity of hydrogen. The existing purification process is complex, large in size and high in maintenance costs, making it difficult to meet the needs of small systems.

Method used

A small PEM electrolytic hydrocarbon-making combined with membrane tube purification system is adopted, including PEM electrolytic hydrogen production unit, hydrogen pretreatment unit and membrane tube purification unit. The hydrogen purification is achieved through selective permeation of membrane materials, simplifying the purification process and reducing system complexity.

Benefits of technology

It realizes efficient purification of hydrogen, reduces the volume and complexity of the system, reduces operation and maintenance costs, and is suitable for small PEM electrolytic hydrogen production systems.

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Abstract

The invention relates to the technical field of hydrogen energy, and particularly provides a small PEM water electrolysis hydrogen production combined membrane tube purification system and method.The small PEM water electrolysis hydrogen production combined membrane tube purification system comprises a PEM water electrolysis hydrogen production unit, a hydrogen pretreatment unit and a membrane tube purification unit, and the PEM water electrolysis hydrogen production unit comprises a pure water tank, a circulating water pump, a filter, a flowmeter, a deionization tank and a PEM electrolytic bath; the filter is used for conveying deionized water in the pure water tank to the PEM electrolytic bath, and the filter and the flow meter are sequentially arranged on a communicating pipeline between the circulating water pump and the PEM electrolytic bath in a communicating manner. The PEM water electrolysis hydrogen production technology and the membrane tube purification technology are combined, the hydrogen production efficiency is guaranteed, the hydrogen purity is improved, meanwhile, membrane tube purification is more suitable for being applied to a water electrolysis hydrogen production system of a small standard party due to the fact that the membrane tube purification can treat the gas amount, the overall size of the system can be reduced, modular design is convenient, and the production cost is reduced. The membrane purification technology has a good application prospect in the PEM water electrolysis hydrogen production market of a small standard party.
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