Process for removing cellulose ethers from a cellulose ether sus

Details Process for removing cellulose ethers from a cellulose ether sus Process for removing cellulose ethers from a cellulose ether sus

1989-02-03

1990-09-04

Hruskoci, Peter

Liquid purification or separation

Processes

Separating

210784, 210798, 210393, 210402, 210411, 210489, 210499, 536 85, B01D 3348

Patent

active

049542680

ABSTRACT:
A process is disclosed for recovering a cellulose ether from a cellulose ether suspension in which the cellulose ether is recovered as a filter cake from a pressure filtration, particularly using a rotary pressure filter. Clogging of the separation or filtration device is avoided, providing for a long useful life. A multi-layer wire mesh filter medium is employed, formed of mesh layers of different wire thicknesses and/or mesh size. After removal of the filter cake, the filter medium is cleaned with steam, compressed air or pressurized water.

REFERENCES:
patent: 2352304 (1944-06-01), Young
patent: 2814620 (1957-11-01), Stewart et al.
patent: 3592341 (1971-07-01), Emmett, Jr. et al.
patent: 4132642 (1979-01-01), Muller et al.
patent: 4728422 (1988-03-01), Bailey

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