And monitoring procedure to ensure safety and yields electrolysers

摘要

Method for ensuring and monitoring the safety and performance of an electrolyser (1) in a manufacturing process which uses at least one cell (2) electrolysis comprising at least one cathode (5) and at least one anode (3), It comprising the steps of: a) determining an operating range safe single voltage which depends on the current and corresponding to a cell (2) electrolysis normally functioning; B) determining a deviation individual reference voltage depends on the temporal deviation of the current; C) measuring the single voltage over time at the terminals (303, 305) of the cell (2) electrolysis; D) determine the measured single voltage deviation by calculating the time derivative of the measured single voltage; E) comparing the measured single voltage of a cell with the operating range of safe single voltage and deviation of measured single voltage of a cell with the offset reference voltage and deviation of measured single voltage of a cell with the deviation medium voltage of a reference group of cells over time; F) stopping the manufacturing process when the measured single voltage is outside the operating range of safe single voltage or the difference between the deviation of measured single voltage and the deviation of reference voltage is out of a predetermined range or stress behavior individually is different from the average of a group of reference cells.