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Experimental study on the application of membrane integration process in PEM water electrolysis for hydrogen production

Authors： WANG Xiaoli1, HUANG Pengfei1, CHEN Chen1, MA Zhenqiang2, WANG Shenghui1,3, JIANG Lidong3, LI Dongyang1

Units： 1. The Institute of Seawater Desalination and Multipurpose Utilization, MNR(Tianjin), Tianjin 300192, China; 2. Tianjin SDIC Jinneng Electricity Generating Co., Ltd., Tianjin 300480,China; 3. Tianjin Lanshizi Membrane Technology Co., Ltd., Tianjin 300192, China

KeyWords： PEM water electrolysis for hydrogen production; high-quality fresh water; membrane integration process; energy recovery

ClassificationCode：TQ051

year,volume(issue):pagination： 2025,45(1):92-100

Abstract：

With the rapid development of the hydrogen energy industry, its water consumption will surge in the future. PEM electrolysis of water for hydrogen production is one of the most promising hydrogen production processes, which requires high-quality fresh water resources. Reverse osmosis seawater desalination, as an open-source incremental technology, is an important way to solve the shortage of fresh water resources. To alleviate the demand pressure for high-quality fresh water in electrolytic hydrogen production, this study compared the desalination treatment effects of different membrane integration processes and the presence or absence of energy recovery devices using seawater as raw water through a combination of membrane integration processes. The designed experimental device has a processing capacity of 40 m3/d, and the process mainly consists of medium filtration, three-stage reverse osmosis, and EDI, with an integrated design using a high-pressure pump energy recovery machine. The experimental results show that the conductivity of the produced water (25 ℃) is ≤ 0.1 mS/m, and the power consumption per ton of water is about 2.9 kW·h. Compared with no energy recovery, it can save 49% of energy consumption, forming a membrane integrated seawater desalination process suitable for PEM electrolysis water hydrogen production water, providing technical reference for seawater desalination in hydrogen production water.

Funds：

2023年国家（兵团）科技计划项目（2023AB034 ）; 农业农村部西北绿洲节水农业重点实验室开放课题（2023OWSL-01）; 山东省重大科技创新工程项目（LSKJ202204503）; 天津市科技计划项目（22JCYBIC00660）; 中央级公益性科研院所基本科研业务费专项资金项目（K-JBYWF-2023-T04，K-JBYWF-2024-ZT06，K-JBYWF-2021-T06，KJBYWF-2024-QR-06，KJBYWF-2024-QR-08）

AuthorIntro：

王晓丽（1986-），女，河北石家庄人，工程师，硕士，从事海水与苦咸水淡化技术研究

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