Curved channel membrane filtration

Details Curved channel membrane filtration Curved channel membrane filtration

1992-06-24

1993-04-20

Sever, Frank

Liquid purification or separation

Processes

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

21032174, 21032183, B01D 6118, B01D 6310

Patent

active

052040020

ABSTRACT:
A filtration apparatus and method utilizes inner and outer walls of porous material which curve around an axis of curvature to define a narrow channel having a spiral shape. The curvature of the spiral and/or the gap width of the channel is selected to create and maintain Dean vortices within the flow of fluid along the channel to maintain good flux of filtrate through the porous walls.

REFERENCES:
PCT/CH90/00022, Swiss PCT Application.
Brochure-Romembra Toray Reverse Osmosis Elements.
G. Belfort, "Fluid Mechanics in Membrane Filtration: Recent Developments", J. Memb. Sc., 40, 123-147 (1989).
S. Bland, et al., "Transitions Toward Turbulence in a Curved Channel", Phys. Fluids, A3(1), Jan. 1991.
P. Ligrani, et al., "Flow Visualization of Dean Vortices in a Curved Channel with 40 to 1 Aspect Ratio", Phys. Fluids, 31(12), Dec. 1988.

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