Method for improving mass transfer in a chlor-alkali...

Details Method for improving mass transfer in a chlor-alkali... Method for improving mass transfer in a chlor-alkali...

C - Chemistry, Metallurgy

25

B

204/156, 204/163

C25B 9/00 (2006.01) C25B 9/08 (2006.01) C25B 11/02 (2006.01)

Patent

CA 1338933

Operation of diaphragm monopolar electrolyzers for chlor-alkali electrolysis is improved by providing at least part of the anodes in their upper portion with hydrodynamic baffles able to generate a plurality of lifting and downcoming recirculation motions of the mixed anolyte-gas phase and of the anolyte separated from gas respectively. The baffles are characterized by their superior edge or overflow holes located under the free surface of the anolyte. The improvements introduced by the present invention provide a reduced cell voltage and an increase in the Faradic efficiency and in the quality of the products.

612564

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