Cleaning and liquid contact with solids – Processes – Including regeneration – purification – recovery or separation...
Patent
1982-02-16
1983-08-02
Fisher, Richard V.
Cleaning and liquid contact with solids
Processes
Including regeneration, purification, recovery or separation...
134 18, 134 26, B08B 304
Patent
active
043964354
ABSTRACT:
A fluid handling system for circulating a selected fluid medium from a selected tank through one of a plurality of wash tanks for a predetermined period of time, draining the selected wash tank and thereby returning the fluid to the selected tank, and then filling the selected wash tank from a different tank and continuing the sequence for each of the different tanks. After a wash by medium from each tank, the object being washed is removed, and another is inserted. The sequential washes are repeated. This operation continues until the contents of a predetermined one of the tanks has degraded by a predetermined increase in impurity concentration, and for thereafter initiating a cascade whereby the tank having fluid of highest impurity concentration is drained, and the contents of each other tank is transferred to an adjacent tank, and completing the sequence by filling the predetermined tank with relatively pure fluid. The cascading sequence is effected with minimal impact on the washing sequences. Each of the fluid transfers from tank to wash tank and back is effected on a timed basis without significant mixing notwithstanding the fact that the particular medium employed prevents the use of a level sensor to identify when a wash tank has been pumped dry.
REFERENCES:
patent: 3441035 (1969-04-01), Edwards
patent: 3515094 (1970-06-01), McVey
patent: 3916937 (1975-11-01), Nystrom
patent: 3945388 (1976-03-01), Clark
patent: 4184891 (1980-01-01), Pollozec et al.
patent: 4195500 (1980-04-01), Tobita et al.
patent: 4226642 (1980-10-01), Baran
patent: 4319930 (1982-03-01), Yano et al.
Catotti Arthur J.
Pensabene Saverio F.
West Jon K.
Fisher Richard V.
General Electric Company
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