Process for isolating cellulose ethers from a suspension

In a process for isolating cellulose ethers, especially cellulose ethers with plastic properties and/or high flocculation point, from a cellulose ether suspension in which the cellulose ethers are separated out as filter cake by pressure filtration, especially in a rotary pressure filter, the intent...

Full description

Saved in:
Bibliographic Details
Main Authors WUEST, WILLI, JUST, GUENTHER
Format Patent
LanguageEnglish
French
German
Published 30.11.1994
Edition5
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
POLYSACCHARIDES
SEPARATION
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:In a process for isolating cellulose ethers, especially cellulose ethers with plastic properties and/or high flocculation point, from a cellulose ether suspension in which the cellulose ethers are separated out as filter cake by pressure filtration, especially in a rotary pressure filter, the intention is to avoid blockage of the separating device and for the separating device to have a long useful life. This is achieved by carrying out the isolation in a rotary pressure filter (I) with a multilayer, preferably sintered, metal wire gauze (8) as filter medium, where the wire gauze (8) is formed from gauze layers of different wire thickness and/or mesh width, and by purifying the filter medium after removal of the filter cake with steam, compressed air or water under pressure.
Bibliography:Application Number: EP19890101327