A method of discharging accumulated hydrogen and oxygen from the electrolysis system under high pressure

Problem. The article proposes a method for regulating the discharge of hydrogen (oxygen) from the electrolysis system during continuous operation of the electrolyzer under pressure. Goal. Development of a functional diagram of the operation of a membraneless electrolyzer equipped with shut-off and control valves with a PID controller. Methodology. This method allows for the metered discharge of hydrogen and oxygen from the corresponding separators during operation and maintenance of the electrolysis system. Results. The proposed method allows for the safe discharge of hydrogen and oxygen from the high-pressure electrolysis system during operation and maintenance. Originality. The resulting hydraulic circuit for the operation of a membraneless electrolyzer allows for the metered discharge of hydrogen and oxygen from the separators into gas storage tanks, both during the development and operation of existing high-pressure electrolyzers. When implementing the proposed technology, with the cyclical nature of the delivery of gases (H2 and O2) to the consumer, the water decomposition reaction occurs continuously with the simultaneous release of hydrogen and oxygen in the electrolysis cell. In this case, in the first half-cycle, hydrogen is released on the passive electrode in gaseous form and fed into the high-pressure main, and oxygen is chemically bound by the active electrode (forming a chemical compound). In the next half-cycle, electrochemical reduction of the active electrode with hydrogen is carried out, which is accompanied by the release of oxygen on the passive electrode and its withdrawal into the external main. Practical value. The use of this hydraulic circuit for the operation of a membraneless electrolyzer equipped with shut-off and control valves with a PID controller allows for the metered discharge of hydrogen and oxygen from the electrolysis system into gas storage tanks.