Chlorine cell design for electrolyte series flow

In a bank or series of chlor-alkali electrolytic cells, wherein each cell comprises at least one electrode pair separated by a cation permselective, substantially hydraulically impermeable membrane, with means for flowing catholyte from cell-to-cell sequentially,

• the embodiment in which the means for flowing catholyte from cell-to-cell comprises, in operable combination,
• entry means for adding water or dilute caustic to the catholyte portion of a first cell of the bank or series,
• flow means for directing gas-lifted catholyte liquor from said first cell to a de-gassing compartment above said cathodes,
• flow means for directing at least a portion of the de-gassed catholyte to a point below the surface of the catholyte liquor in the next successive cell while allowing at least a portion of the de-gassed catholyte to re-enter the cell from which it came,
• flow means for directing gas-lifted catholyte liquor from said next successive cell and each additional successive cell in the series thereafter, to a degassing compartment above the cathodes, at least a portion of the de-gassed catholyte of each cell being directed to a next successive cell while allowing at least a portion of the de-gassed catholyte to re-enter the cell from which it came,
• flow means for directing de-gassed catholyte liquor from the last cell of the bank or series, and
• flows means for removing cell gasses from the de-gassing compartment.