Filter wash for chloralkali process

Details Filter wash for chloralkali process Filter wash for chloralkali process

2011-07-05

2011-07-05

Phasge, Arun S (Department: 1724)

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Preparing inorganic compound

Reexamination Certificate

active

07972493

ABSTRACT:
Filter wash methods and apparatuses for chloralkali processes are provided. The filter wash uses in-process fluids from the chloralkali process to wash filters. The in-process fluids may be drawn from a point in the chloralkali process where the in-process fluids contain active chlorine values such as bleach. A filter may then be isolated from the chloralkali process and contacted with the in-process fluids containing active chlorine values to wash the filter. The in-process fluids containing active chlorine values may be operable to oxidize organic material clinging to the filter, thereby cleaning the filter. After washing, the in-process fluids containing active chlorine values may be returned to the chloralkali process to a point at or near where they were drawn from. The filters may be membrane filters. The filters may comprise expanded polytetrafluoroethylene.

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