Process for chloro-alkali electrolysis cell
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United States of America Patent
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Aug 12, 1980
Issued Date -
N/A
app pub date -
Apr 2, 1979
filing date -
Sep 14, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved process and apparatus for pH control and energy savings in chlor-alkali electrolysis cells is disclosed wherein a fuel cell type spaced porous catalytic anode is utilized to chemically oxidize a controlled, sub stoichiometric amount of hydrogen to provide hydrogen ions to a recirculating anolyte. The pH is monitored and the flow of hydrogen fuel adjusted to provide a resultant desired pH in the range of about 2 to about 4. Optionally, hydrogen gas produced at the cell cathode may comprise the fuel supply and a spaced porous catalytic cathode may be employed for hydrogen supply control and depolarization.
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