process for the preparation of a alkalimetaal hydroxide by electrolysis of an aqueous salt solution with halogeenionen in a elektrolysecel with at least three compartments.

摘要

This invention relates to an improved method of operating a three compartment electrolytic cell which comprises an anode compartment, a buffer compartment and a cathode compartment. More specifically, it concerns an improved method of operating a three compartment cell used in the electrolytic production of chlorine and caustic wherein the solution produced in the buffer compartment is either chemically or physically treated to optimize the overall operation of the three compartment electrolytic cell.