Process for the dechlorination and cooling of the anolyte of...

Details Process for the dechlorination and cooling of the anolyte of... Process for the dechlorination and cooling of the anolyte of...

C - Chemistry, Metallurgy

25

B

204/57.1

C25B 1/34 (2006.01) C25B 15/08 (2006.01)

Patent

CA 1165273

Abstract of the Disclosure: The electrolysis of aqueous alkali metal chloride solutions under pressure has already been carried out. In accordance with the invention there is applied a pressure of at least 8 bars in the anode apace for such an electro- lysis, as well as a special process for the work-up of the products of the anode space. The mixture of gas and ano- into leaving the anode space is at first mechanically se- parated, and the anolyte is then depressurized into a stripping column. In the course of this process a dechlo- rination and cooling of the anolyte are taking place. The anolyte is to enter the pressure release vessel (stripping column) with a temperature being above the boiling point of the anolyte at atmospheric pressure. The reduced pressure in to be between 2 bars and atmospheric pressure. By means or these measures it may be ensured that the anolyte in the stripping column reaches boiling point. Finally the chlo- rine set free in the pressure release operation is separat- ed from the anolyte.

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