Back-flushable filtration device and method of forming and using

Details Back-flushable filtration device and method of forming and using Back-flushable filtration device and method of forming and using

1991-01-10

1992-05-19

Dawson, Robert A.

Liquid purification or separation

Processes

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

210653, 210108, 21032175, 21050027, 210506, 2105101, 55 16, 55523, 264 60, B01D 6100, B01D 2900, B01D 2400

Patent

active

051145812

ABSTRACT:
A back-flushable filtration device is provided. The device includes a monolith of porous material having an inlet end and an outlet end. The passageways of the monolith are plugged at the inlet and outlet ends of the monolith, thereby preventing direct passage of feed stock through the passageways from the inlet end to the outlet end. A microporous membrane of mean pore size smaller than the mean pore size of the monolith material covers the surface of the passageways. Methods for making the back-flushable filter as well as methods for using the back-flushable filter also are provided.

REFERENCES:
patent: 4329162 (1982-05-01), Pitcher, Jr.
patent: 4364760 (1982-12-01), Higuchi et al.
patent: 4416675 (1983-11-01), Montierth
patent: 4416676 (1983-11-01), Montierth
patent: 4417908 (1983-11-01), Pitcher, Jr.
patent: 4419108 (1983-12-01), Frost et al.
patent: 4428758 (1984-01-01), Montierth
patent: 4464185 (1984-08-01), Tomita et al.
patent: 4830749 (1989-05-01), Okamoto et al.
patent: 4874516 (1989-10-01), Kondo
patent: 4983423 (1991-01-01), Goldsmith

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