C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
204/195
C25B 1/14 (2006.01) C25B 1/00 (2006.01) C25B 9/00 (2006.01) C25B 11/02 (2006.01) C25B 11/04 (2006.01)
Patent
CA 1324783
ABSTRACT OF THE INVENTION An improved multiple layered porous electrode for use in an electrochemical membrane cell is provided having a first perforated support layer, a second layer of fibers, a third layer of fibers less dense than the second layer and a fourth layer of meshed wire cloth. The electrode may be used as a cathode in the cell for the electrochemical production of an alkali metal hydrosulfite by the reduction of an alkali metal bisulfite component of a circulated aqueous catholyte solution. Additionally, a flow barrier is provided for interrupting the catholyte flowing between the top and bottom of the cell to cause substantially all the catholyte to change flow direction and pass twice through the cathode plate.
561171
Olin Corporation
Osler Hoskin & Harcourt Llp
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