Tubesheet for semipermeable membrane devices

Details Tubesheet for semipermeable membrane devices Tubesheet for semipermeable membrane devices

1988-04-22

1989-01-24

Spear, Frank

Liquid purification or separation

Casing divided by membrane into sections having inlet

Cylindrical membrane

55158, 21032189, 210450, B01D 1300

Patent

active

048000191

ABSTRACT:
A method for producing hollow fiber permeable devices having an essentially leak-free seal between the hollow fibers and the tubesheet that consists of heating the tubesheet containing the hollow fibers potted therein at a temperature essentially equal to or greater than the glass transition temperature of the thermoplastic material or the softening point of the thermoset material of the hollow fiber for a period of time sufficient to essentially densify the hollow fibers in the potted portion of the tubesheet and whereby a major portion of the interior diameter of the bores of the hollow fibers embedded in the tubesheet is enlarged; and the fiber permeable devices themselves.

REFERENCES:
patent: 4323453 (1982-04-01), Zampini
patent: 4380460 (1983-04-01), Otstot et al.
patent: 4547289 (1985-10-01), Okano et al.
patent: 4623460 (1986-11-01), Kuzumoto et al.
patent: 4671809 (1987-06-01), Taketomo et al.

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