Process for separating solid particulates from a nonaqueous susp

Details Process for separating solid particulates from a nonaqueous susp Process for separating solid particulates from a nonaqueous susp

1992-06-02

1993-10-12

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 21032169, B01D 6508

Patent

active

052522180

ABSTRACT:
A method for processing a flowable nonaqueous, high viscosity dispersion which includes a product, where the product is a particulate material having a particle size between about 1.0 microns to about 200 microns, is disclosed. The flowable dispersion has a viscosity from about 10 cps to about 500 cps at 140.degree. F. The method comprises cross flow filtering the dispersion through a porous nonmetallic inorganic filter having a pore size from about 0.5 to about 10 microns. The cross flow rate is in the range of from about 3.0 to about 9.0 feet/second (1 to 3 ml/sec) at least about 120.degree. F. and preferably there is at least one backflush at a rate of about 2 to about 5 seconds for every 3 to about 5 minutes of cross flow filtration.

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