Patent ID: 6123823
Filing Date: 2000-09-26
Classification: B01D,B01J,Y02A

Abstract:
A gasket for use in electrodeionization cell stacks, said gasket having a uniform thickness, manifold holes and ports for supplying and removing aqueous solutions into and out of said gaskets, at least some of said manifold holes providing conduits for enabling a solution to flow to other gaskets in the stack, there being a maximum of four of said manifold holes per series flow path, an active area of said gasket comprising multiple flow path sections connected together by flow restrictors in order to form at least one series flow path within said gasket, each of said flow path sections having a width which is greater than the width of the flow restrictors, said restrictor reducing the velocity of fluid flowing through said flow path to about 50-100% of the velocity of said fluid in said flow restrictor sections, each series flow path having a first of said ports for providing a fluid inlet to said path and a second of said ports for providing a fluid outlet from said path, said ports having a thickness which is substantially the same thickness of said gasket, said ports being more rigid than the gasket and comprising substantially flat top and bottom surfaces with at least one fluid flow channel therebetween; and an ion exchange material filling the series flow path sections and the connecting flow restrictor sections.