Electrolyser system of water electrolysis and process therefor

By integrating a gas cooling section within the gas separator to directly cool electrolysis gases using cooling water, the complexity and waste water issues of existing systems are addressed, resulting in a simpler, more efficient, and safer electrolyser system.

US20260139393A1Pending Publication Date: 2026-05-21LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
Filing Date
2026-01-12
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing electrolyser systems for water electrolysis are complex, produce waste water that requires costly management, and allow impurities to accumulate in the electrolyte due to the need for separate cooling and water balancing equipment, leading to inefficiencies and potential hazards.

Method used

Integrate a gas cooling section within the gas separator to directly cool electrolysis gases using cooling water from the water supply, eliminating the need for separate cooling equipment and allowing the condensed water to be recycled, thus simplifying the system and preventing impurity accumulation.

Benefits of technology

This integration reduces system complexity, minimizes waste water production, and maintains electrolyte purity by directly cooling electrolysis gases and recycling condensed water, thereby enhancing efficiency and safety.

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Abstract

An electrolyser system having an electrolysis stack and a direct current source, in order to generate oxygen and hydrogen as electrolysis gas by electrolysis of a water containing electrolysis medium. The electrolysis stack includes an anode section configured to generate oxygen and a cathode section configured to generate oxygen. Furthermore, the electrolyser system has an anode gas separator configured to separate oxygen from the electrolysis medium and a cathode gas separator configured to separate hydrogen from the electrolysis medium, wherein at least one of the gas separators includes a gas separating section and a gas cooling section, wherein the gas cooling section has a water inlet connected with a water supply, in order to supply cooling water to the gas cooling section of the gas separator, for the direct cooling of the electrolysis gas separated in the gas separating section of the gas separator within the gas cooling section.
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