Spiral wound gas permeable membrane module and apparatus and met

Details Spiral wound gas permeable membrane module and apparatus and met Spiral wound gas permeable membrane module and apparatus and met

1991-02-26

1992-10-13

Spear, Frank

Liquid purification or separation

Processes

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

210247, 21032174, 21032183, B01D 6310

Patent

active

051548321

ABSTRACT:
A spiral wound gas permeable membrane module having a hollow mandrel with a plurality of holes, at least one envelope-like gas permeable membrane wrapped spirally around the mandrel, at least one feed water spacer positioned on the outer surfaces of the spirally wrapped envelope-like membrane, and at least one permeation side spacer provided in the envelope-like membrane. The module contains a partition block for blocking the flow of a gas flowing in the mandrel in its longitudinal direction and a flow regulating wall directing the flow of the gas introduced into the envelope-like membrane through the holes aligned on one side of the partition block so that the gas travels in the envelope-like membrane in a spirally outer direction, then returns in a spiral inner direction and flows into the mandrel through the holes aligned on the other side of the partition block. The gas dissolved in raw water supplied to the feed water spacer side is degasified by gas permeation to the permeation side spacer through the membrane which has a broad area for permeation with a high efficiency.

REFERENCES:
patent: 3892533 (1975-07-01), Freedman et al.
patent: 4033878 (1977-07-01), Foreman et al.
patent: 4268279 (1981-05-01), Shindo et al.

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