Liquid purification or separation – Recirculation
Patent
1992-03-11
1994-07-19
Lithgow, Thomas M.
Liquid purification or separation
Recirculation
210196, 210202, 210205, 210411, 21033301, 2103331, 210770, 210771, 210791, 210805, 536 76, 536 77, 536127, 536128, B01D 2962, B01D 2966, B01D 2980
Patent
active
053306422
ABSTRACT:
Apparatus for filtering cellulose acetate solutions, including a backflush filter to effect filtration so as to avoid solvent losses and filtering aids that must be dumped, dilution means including solvent supply means for diluting the backflush liquid, separation means for eliminating solid insoluble components, and means for recycling backflush liquid freed from solids to a plant for producing new cellulose acetate spin solution.
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Lenzing Aktiengesellschaft
Lithgow Thomas M.
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