초록 ▼

A process for the removal of at least one non-water vapor component of a vaporous mixture, the basic process comprising directing a vaporous mixture against the feed side of a membrane, directing a condensable vapor sweep stream past the permeate side of the membrane in a manner such that the flow o

A process for the removal of at least one non-water vapor component of a vaporous mixture, the basic process comprising directing a vaporous mixture against the feed side of a membrane, directing a condensable vapor sweep stream past the permeate side of the membrane in a manner such that the flow of the condensable vapor sweep is substantially countercurrent to the flow of the vaporous mixture, thereby transporting at least a portion of at least one non-water vapor component of the vaporous mixture from the feed side to the permeate side of the membrane to form a combined permeate side mixture of condensable vapor and at least one non-water vapor transported component.

대표청구항 ▼

A countercurrent sweep vapor permeation process for the removal of at least one non-water vapor component of a vaporous mixture feed, said vaporous mixture feed consisting essentially of vapors and being predominantly condensable and including at least one non-water vapor component, comprising the s

A countercurrent sweep vapor permeation process for the removal of at least one non-water vapor component of a vaporous mixture feed, said vaporous mixture feed consisting essentially of vapors and being predominantly condensable and including at least one non-water vapor component, comprising the steps of: (a) providing a membrane that has a feed side and a permeate side and is selectively permeable to said at least one non-water vapor component; (b) directing said vaporous mixture feed against said feed side of said membrane while maintaining said vaporous mixture feed near saturation without condensing the same; (c) directing a sweep stream of condensable vapor past said permeate side of said membrane in a manner such that the flow of said sweep stream is substantially countercurrent to the flow of said vaporous mixture feed, thereby forming a retentate stream of non-permeating components and transporting at least a portion of said at least one non-water vapor component of said vaporous mixture feed from said feed side to said permeate side of said membrane to form a combined non-condensed permeate side mixture of said condensable vapor and said at least one non-water vapor component; and (d) removing said combined permeate side mixture wherein the partial pressure of said at least one non-water vapor component in said vaporous mixture feed exceeds the partial pressure of said at least one non-water vapor component on said permeate side.