Membrane transfer process and apparatus

Details Membrane transfer process and apparatus Membrane transfer process and apparatus

1974-12-30

1976-11-02

Spear, Jr., Frank A.

Liquid purification or separation

With heater or heat exchanger

With treating fluid addition

210321B, B01D 3100

Patent

active

039896269

ABSTRACT:
The present invention relates to a tubular membrane apparatus, which may be made as a disposable unit, and the method of operation of that apparatus to achieve a transfer or exchange function. More specifically, the present invention may be used to oxygenate blood, purify water, as a dialysis medium, and for other purposes. The apparatus comprises a series of tubular membranes which are deformed at spaced intervals along their lengths to induce turbulent flow and secondary flow patterns which displace the stationary boundary layer which would otherwise exist adjacent to the inner surface of the tubular membrane such that the resistance to diffusion or exchange is substantially reduced. Pulsatile flow of the fluid within the tubular membrane and/or the fluid surrounding the tubular membrane may be employed to enhance the effectiveness of the unit. In a preferred embodiment, a liquid is flowed through the tubular membranes and a gaseous medium is caused to flow around the outer surface of the tubular membrane.

REFERENCES:
patent: 3228876 (1966-01-01), Mahon
patent: 3332746 (1967-07-01), Claff et al.
patent: 3557962 (1971-01-01), Kohl
patent: 3704223 (1972-11-01), Dietzsch et al.

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