Abstract:

The large-scale integrated hydrogen production model has become an important way to solve the problem of the “wind and solar curtailment” and promote the development of hydrogen energy industry. Whether it is pure water electrolysis or alkaline electrolysis, water is a core element for raw material supply and a key medium for equipment cooling. In actual operations, there are significant regional differences in water intake and consumption for electrolysis-based hydrogen production projects, especially in arid regions of Northwest China. Utilizing scientific water management and advanced water-saving technologies is strategically important for promoting the sustainable development of green hydrogen industries. This paper systematically analyzed the water quality indicators and process design requirements for water systems in electrolysis-based hydrogen production plants, including water generation systems, circulating cooling water systems, chilled water systems, and wastewater treatment systems. The water usage and discharge volumes, water migration paths, water balance diagrams, and water-saving measures in a specific hydrogen production plant case study were also examined. Combining water treatment technologies, water management, and advanced hydrogen production techniques, this paper proposed a comprehensive hydrogen-water co-production technology approach that integrated hydrogen production with wastewater treatment and deep water conservation in hydrogen production plants, as well as future technological development directions.

Key words: electrolysis hydrogen production plant, water treatment, water management, zero waste water discharge

摘要：

大型风光制氢一体化模式已成为解决“弃风弃光”问题和推动氢能产业发展的重要途径，无论是纯水电解还是碱性电解的制氢技术，水既是原料供给的核心要素，也是设备冷却的关键介质。实际运营中，电解制氢项目的取水量与耗水量存在显著的地域差异，尤其在西北干旱地区，利用科学的水务管理与先进的节水技术对于推动绿氢产业可持续发展具有战略意义。系统分析了电解制氢工厂水系统用水水质指标和工艺设计要求，包括制水系统、循环冷却水系统、冷冻水系统、废水处理系统等；结合某制氢工厂案例分析了用水和排水量、水迁移路径、水平衡图和节水措施。结合水处理技术、水务管理及先进的制氢技术现状，提出了集制氢与污水/废水治理协同和制氢工厂深度节水为一体的完整氢水协同技术思路和未来技术发展方向。

关键词: 电解制氢工厂, 水处理, 水务管理, 废水零排放

CLC Number: 

• TB495