Liquid purification or separation – Constituent mixture variation responsive
Patent
1994-11-07
1996-11-26
Ball, Michael W.
Liquid purification or separation
Constituent mixture variation responsive
210143, 210167, 210269, 204480, 205 99, 118602, 118400, 118429, B01J 4702, B05D 118, B05D 714
Patent
active
055781993
ABSTRACT:
A system automated for providing at least periodic removal of metal ions and contaminants from a chemical bath, consists of a microprocessor programmed for controlling fluid circuits of pumps and valves, for in one state of operation circulating a first predetermined quantity of the chemical bath from a first tank, through an ion exchange column, and back to the first tank; for in a second state of operation circulating deionized water from a second tank into the IEX column for displacing residual chemical bath therefrom for return to the first tank; for in a third state of operation circulating deionized water through the IEX column, and discharging the rinse water from a waste port; for in a fourth state of operation circulating regenerant acid through the ion exchange column, and discharging the used acid from a waste port; for in a fifth state of operation circulating deionized water through the IEX column for rinsing acid regenerant therefrom and discharging the same out of a waste port; and for in a sixth state of operation circulating chemical bath into the IEX column for displacing residual rinse water therefrom, and discharging the same out of the waste port, in preparation for a cycle of treatment of the chemical bath.
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Kozak William G.
Topping Joseph C.
Ball Michael W.
Henkel Corporation
Jaeschke Wayne C.
Lorin Francis J.
Szoke Ernest G.
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