Process for the electrolytic dissociation of hydrogen sulfide

Details Process for the electrolytic dissociation of hydrogen sulfide Process for the electrolytic dissociation of hydrogen sulfide

C - Chemistry, Metallurgy

25

B

C25B 1/00 (2006.01) B01D 53/14 (2006.01) C01B 17/05 (2006.01)

Patent

CA 2759498

The invention relates to a method for electrolytically decomposing hydrogen sulfide dissolved in an amine scrubber solution in an electrolysis cell (11), which comprises an anode chamber (9) and a cathode chamber (15), wherein the anode chamber (9) and the cathode chamber (15) are separated by a membrane (13), wherein at least one conducting salt is added to the amine scrubber solution, an anion-conducting membrane is used to separate the anode chamber (9) and the cathode chamber (15), and/or the amine scrubber solution in which the hydrogen sulfide is dissolved contains at least 10 vol.% potassium-N,N-dimethylamino acetic acid. The invention further relates to a use of the method.

L'invention concerne un procédé permettant la séparation électrolytique d'hydrogène sulfuré dissous dans une solution de lavage aux amines dans une cellule d'électrolyse (11) comprenant un compartiment anodique (9) et un compartiment cathodique (15) séparés l'un de l'autre par une membrane (13). Selon le procédé, au moins un sel conducteur est ajouté à la solution de lavage aux amines, une membrane perméable aux anions est utilisée pour séparer le compartiment anodique (9) du compartiment cathodique (15) et/ou la solution de lavage aux amines, dans laquelle est dissous l'hydrogène sulfuré, contient au moins 10% en volume de N,N-diméthylaminoacétate de potassium. L'invention concerne en outre une utilisation de ce procédé.

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