Rapid vapour transport through unwetted porous barriers

Details Rapid vapour transport through unwetted porous barriers Rapid vapour transport through unwetted porous barriers

B - Operations, Transporting

01

D

182/13.1

B01D 61/36 (2006.01) B01D 67/00 (2006.01) C12G 3/08 (2006.01)

Patent

CA 1282011

ABSTRACT A method of increasing the rate of transport of volatiles through porous barriers such as membranes consists of subjecting the porous barrier to a vacuum for sufficient time to remove any permanent gas from the pores, admitting a non-wetting liquid to the barrier either before or during the application of the vacuum and then releasing the vacuum whereby the non-wetting liquid forms films or bubbles which seal the pores to create a low pressure region within each pore which is filled with vapour of the non-wetting liquid. The invention may be used to transport volatiles such as ethanol across a membrane and to transfer heat across a membrane.

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