Membrane filtration type hollow fibers

Details Membrane filtration type hollow fibers Membrane filtration type hollow fibers

1979-12-28

1982-07-20

Hart, Charles N.

Liquid purification or separation

Filter

Material

55158, B01D 3916

Patent

active

043404812

ABSTRACT:
The invention concerns a membrane filtration type hollow fiber. It is composed of a single material phase which material is a chain high polymer and capable of forming fibers by the spinning of the high polymer. The cylindrical wall defining the hollow fiber represents a three-dimensional net-like structure of fine filtering passages of 0.05 to 1 micron, preferably 0.1 to 1 micron. This structure occupies substantially the whole mass of the tubular wall or a closed ring band zone when seen in any cross-section of the wall, providing thus an effective and active filtering zone. The pore rate amounts to at least 55%, and active points of the filtering passages for governing minimum passable sizes of the passages for solids included in a filtering liquor to be treated upon are distributed at random throughout at least the active zone. These sizes are nearly uniform.

REFERENCES:
patent: 3526588 (1970-09-01), Michaels et al.
patent: 3674628 (1972-07-01), Fabre
patent: 3930105 (1975-12-01), Christen et al.
patent: 4234431 (1980-11-01), Mishiro et al.

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