Method for multi-stage washing

Details Method for multi-stage washing Method for multi-stage washing

1980-03-28

1982-03-16

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 254, 134 255, 134 26, 134 60, 134 72, B08B 302

Patent

active

043199305

ABSTRACT:
In a multi-stage washing system comprising a plurality of washing tanks, fresh liquid is applied over a treated material at a front position in the zone of a furthermost tank, whereas in the tanks excluding a nearest tank, washing liquid is pumped from the individual washing tanks in an amount of more than that of the applied fresh liquid and applied over the treated material at a front position in the zones of individual adjacent washing tanks placed after said individual washing tanks in an amount of the applied fresh liquid and a rear position in the zones of said individual washing tanks in the remaining amount.

REFERENCES:
patent: 2541901 (1951-02-01), Zademach et al.
patent: 2583183 (1952-01-01), Marvin et al.
patent: 3888693 (1975-06-01), Schevey et al.
patent: 3938214 (1976-02-01), Hodsen et al.
patent: 3979220 (1976-09-01), Ishiyama et al.
patent: 4039349 (1977-08-01), Kwasnoski et al.
patent: 4062697 (1977-12-01), Egli et al.
patent: 4183115 (1980-01-01), Zakarian

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