CHLORINE CELL DESIGN FOR ELECTROLYTE SERIES FLOW

摘要

A bank or series of chlor-alkali electrolytic cells is provided wherein each cell comprises at least one electrode pair separated by a cation perm-selective membrane with means for series flow of an electrolyte comprising an anolyte and a catholyte sequentially through the cells such that the anolyte flow is in a direction countercurrently to the catholyte flow. The invention distinguishes over electrolytic cells that are in use by flow means for 1) directing gas lifted electrolyte from a first of said cells to a de-gassing compartment located above the electrodes; 2) for directing at least a portion of the de-gassed electrolyte to a point below the surface of the electrolyte in the next successive cell while allowing at least a portion of the de-gassed electrolyte to re-enter the cell from which it came; 3) for directing de-gassed electrolyte from the last of the series of cells, and 4) for removing cell gasses from the de-gassing compartment. The cells of the invention are suitably employed as monopolar or bipolar cells wherein the electrodes are of a pocket or flute plate design.