PROCESS AND CELL FOR ELECTROLYSIS

摘要

PURPOSE:To reutilize a mercury process electrolytic cell for the electrolysis of aq. NaCl soln. to an electrolytic cell using a horizontal cation exchange membrane advantageously by rebuilding the mercury process cell without discarding it as scrap. CONSTITUTION:A cover of a mercury process electrolytic cell and side walls of an anode chamber are utilized as they are for a cover 4 and side walls 5 for an electrolytic cell using a horizontal cation exchange membrane which have been used for manufacturing gaseous Cl2 and NaOH by the electrolysis of aq. NaCl soln. An insoluble anode plate 12 prepd. by covering graphite or a metal such as Ti with a Pt group metal is suspended from an anode bus bar 8 with a conductive rod 9; a cation exchange membrane 3 is provided horizontally beneath the anode bus bar, and a cathode chamber 2 is constructed with the rear surface of the cation exchange membrane, a cathode plate 16 consisting of a bottom plate of the mercury process electrolytic cell, and side walls 17 of the cathode chamber. An introducing port 13 and a discharging port 14 of anolyte are provided to the anode chamber 1, and a collecting port 15 of gaseous Cl2 produced at the anode is also provided.