Spirally wrapped reverse osmosis membrane cell

Details Spirally wrapped reverse osmosis membrane cell Spirally wrapped reverse osmosis membrane cell

1988-04-04

1989-03-21

Spear, Frank

Liquid purification or separation

Casing divided by membrane into sections having inlet

Coiled membrane

210456, 210487, 2104941, B01D 1300

Patent

active

048140791

ABSTRACT:
A spirally-wrapped reverse osmosis membrane cell employing an envelope of semipermeable membrane sheets spirally wound or wrapped about a tubular mandrel. The convolutions of the membrane assembly are separated to form an open channel, directed feed flow path leading into a lateral opening or series of openings in a communicating tubular member defining an unobstructed bore throughout its length. The feed separator may comprise a plurality of substantially parallel strips of impermeable material of a thickness sufficient to provide desired separation between membrane sheets and wherein the strips define a meandering fluid flow path throughout the length and width of the membrane sheet.

REFERENCES:
patent: 2599604 (1949-07-01), Bauer
patent: 3173867 (1965-03-01), Michaels
patent: 3367504 (1968-02-01), Westmoreland
patent: 3695446 (1972-10-01), Lyall
patent: 3813334 (1974-05-01), Bray
patent: 3827564 (1974-08-01), Rak
patent: 3928204 (1975-12-01), Thomas
patent: 3962096 (1976-06-01), Ishii et al.
patent: 4053418 (1977-10-01), Newman

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