ELECTROLYSER AND METHOD FOR PRODUCING SYNTHESIS GAS BY WATER ELECTROLYSIS USING GRAPHITE/CARBON ELECTRODES

摘要

The present invention relates to an alkaline electrolyser characterised in that electrolysis is performed without separating the hydrogen and oxygen gases obtained by the dissociation of the water by the graphite electrodes (2) that are isolated by separating plates (1) and permanently attached inside a suitably sealed tank (5) containing de-ionised water to which a sodium hydroxide electrolyte with a low concentration is added, the terminal electrodes forming the positive pole (4) and the negative pole (3). Each of the graphite plates (2) has two holes that form two electrolyte circulation channels; the bottom channel (6) is connected to the electrolyte inlet and the top channel (7) corresponds to the electrolyte outlet channel, entraining the gases produced during the electrolysis and oxidation process. The present invention also relates to the electrolytic process carried out in the electrolyser designed according to claim 1, supplied by an electric power source and producing a gaseous mixture containing hydrogen and oxygen which are conveyed to a reactor containing the carbonaceous material, yielding synthesis gas.