Capillary membrane device

Details Capillary membrane device Capillary membrane device

1994-03-16

1997-06-17

Fortuna, Ana

Liquid purification or separation

Casing divided by membrane into sections having inlet

Cylindrical membrane

21032179, 21032178, 21032188, 21050023, 210638, 210175, 204210, 204409, 204241, 264DIG48, B01D 6300, B01D 1504

Patent

active

056393687

ABSTRACT:
A channelized mass transfer membrane (MTM) is disclosed which has improved ion separation characteristics when employed in electrodialysis cells. The MTM exploits the unexpected ion separation ability of channelized membrane geometries. A major improvement of the disclosed invention is the use of tubular channels formed by means of hollow fibers which limit the directions in which ions can diffuse. The chief embodiments of the MTM exploit either the formation of capillary voids in solid material or the use of hollow fibers to form capillary channels. Additional levels of MTM porosity are achieved by filling of the channels with microporous material. Means are disclosed for cooling the MTM and adaptation of the MTM hydraulic resistance.

REFERENCES:
patent: 4105731 (1978-08-01), Yamazaki
patent: 4231871 (1980-11-01), Lipps et al.
patent: 4247393 (1981-01-01), Wallace
patent: 4310399 (1982-01-01), Columbus
patent: 4381985 (1983-05-01), Ryder, Jr.
patent: 4666543 (1987-05-01), Kawano
patent: 5139668 (1992-08-01), Pan et al.

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