Process for the separation and purification of cellulose ethers

Details Process for the separation and purification of cellulose ethers Process for the separation and purification of cellulose ethers

1988-08-31

1990-10-16

Fisher, Richard V.

Liquid purification or separation

Processes

Separating

210797, 210806, B01D 3704

Patent

active

049632710

ABSTRACT:
A process and apparatus for the separation and purification of cellulose ethers and other cellulose derivatives in a filter unit at relatively high temperatures and with narrow-mesh filters, employing a pressure vessel having candle filters to which pressure is introduced for separation of the suspension liquid, for the removal of residual liquid from the filter cake formed, and also for washing the filter cake.

REFERENCES:
patent: 4152267 (1979-05-01), Davis et al.
patent: 4789474 (1988-12-01), Gaudfrin
patent: 4790935 (1988-12-01), Johnson
Ullmans Encyklopdie der technischen Chemie, 4. Auflage, Band 2, Verfahrenstechnik I, 1972, pp. 177-178.
Chem. Ing. Techn. 55, 1983, Nr. 11, pp. 823-829 and 829-839.

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