Liquid purification or separation – Processes – Separating
Patent
1994-05-20
1997-10-14
Dawson, Robert A.
Liquid purification or separation
Processes
Separating
210805, 210194, 210217, 210403, 210404, 210398, B01D 3306
Patent
active
056768478
ABSTRACT:
A method for recovering crystals from a crystal-containing slurry, which comprises supplying the slurry to a rotary filter having a rotating cylindrical filter medium, filtering the supplied slurry in a filtering region to retain the crystals on the filter medium and washing the filter cake formed on the rotating filter medium repeatedly in a plurality of washing regions by spraying a washing liquid onto the cake in each region by supplying any one of washing regions on the aft side in the rotating direction of the filter medium with the spent washing liquid of the washing region adjacent to said one washing region on the fore side in the rotating direction.
REFERENCES:
patent: 3409139 (1968-11-01), Jackson et al.
patent: 4255264 (1981-03-01), Madsen
patent: 5093001 (1992-03-01), Ueda
patent: 5175355 (1992-12-01), Streich et al.
BHS-Fest Druck-Vakuum Filter, Huttenwerk Sonthofen, 1961, Complete Document in German (and English Translation).
Okamoto Etsuro
Sakata Toshiyuki
Suzuki Hiroshi
Yamamoto Ryoichi
Dawson Robert A.
Mitsui Petrochemical Industries Ltd.
Popovics Robert James
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