Apparatus for the separation of mixtures by means of pervaporation
First Claim
1. An apparatus for the separation of components of a fluid mixture by pervaporation, comprising at least one unit comprised of(A) a first plate and a second plate, each of said plates presenting a membrane surface (i) and a feed surface (ii), respectively, and defining at least one first opening and one second opening, wherein each membrane surface (i) of said plates provides a recess;
- (B) two membranes, each of said membranes having an active surface and a nonactive surface, wherein the active surfaces of said membranes face, and are sealingly engaged to, a membrane surface (i) of said first and second plates, respectively;
(C) at least one spacer element through which a fluid can flow, said spacer element contacting a nonactive surface of one of said membranes;
(D) means for juxtaposing feed surfaces (ii) of said first and second plates, respectively, such that a space provided between the juxtaposed feed surfaces (ii) is divided into separated first portion and second portion;
(E) means for introducing a fluid into said first portion; and
(F) means for withdrawing fluid from said second portion, wherein said recess of each of said first plate and said second plate, together with a membrane (B), defines a first feed space and a second feed space, respectively, said two feed spaces together forming a raw feed chamber that communicates, via said first opening, with said first portion and, via said second opening, with said second portion, such that raw feed fluid introduced by means (E) into said first portion can flow through said raw feed chamber to said means (F).
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Abstract
An apparatus for membrane pervaporation, in which a raw feed chamber, constituting two partial chambers, is formed by two plates. On the respective sides of each plate which are faced away from each other, there is a surrounding profile, which serves as support for the membrane. A surrounding gasket is arranged between the respective plate and the membrane such that the compaction of the gasket is limited to a predetermined value. Several raw feed chambers and permeate chambers can be alternately arranged in a stack unit. The apparatus is characterized by a simple design and low number of elements.
70 Citations
22 Claims
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1. An apparatus for the separation of components of a fluid mixture by pervaporation, comprising at least one unit comprised of
(A) a first plate and a second plate, each of said plates presenting a membrane surface (i) and a feed surface (ii), respectively, and defining at least one first opening and one second opening, wherein each membrane surface (i) of said plates provides a recess; -
(B) two membranes, each of said membranes having an active surface and a nonactive surface, wherein the active surfaces of said membranes face, and are sealingly engaged to, a membrane surface (i) of said first and second plates, respectively; (C) at least one spacer element through which a fluid can flow, said spacer element contacting a nonactive surface of one of said membranes; (D) means for juxtaposing feed surfaces (ii) of said first and second plates, respectively, such that a space provided between the juxtaposed feed surfaces (ii) is divided into separated first portion and second portion; (E) means for introducing a fluid into said first portion; and (F) means for withdrawing fluid from said second portion, wherein said recess of each of said first plate and said second plate, together with a membrane (B), defines a first feed space and a second feed space, respectively, said two feed spaces together forming a raw feed chamber that communicates, via said first opening, with said first portion and, via said second opening, with said second portion, such that raw feed fluid introduced by means (E) into said first portion can flow through said raw feed chamber to said means (F). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification