Flow-through capacitor and method of treating liquids with it
AssigneeBiosource, Inc.
InventorsToshiro Otowa, Naoto Tanaka
Life of this patent
Estimating the term…
Abstract
A separator (1), electrode (2) and collector (3), each made of a polygonal sheet, are stacked up in a multi-layer serial arrangement of [{fraction (3/2)}/½] sub n/3, with the provision of a through-hole in the respective sheets in the corresponding position for passage of a liquid. The stack is accommodated in a housing (8) so that it may be compressed from both sides at a pressure 0.5 kg per cubic meter G by tightening a retainer (4) which doubles as a cover. The liquid to be treated is passed through the capacitor through an inlet and outlet (5).
Claims19
A flow through capacitor essentially comprising a separator, an electrode disposed on either side thereof, and a collector disposed externally of said electrode, characterized in that each of the separator, electrode and collector is an independent or folded flat sheet having a polygonal configuration,
- that said separator, electrode, and collector are disposed in a multi-layer serial arrangement of [3/2/1/2]n/3 where n is not less than 20,
- that each of said separator, electrode, and collector comprises a polygonal sheet provided with one or a plurality of through-holes for passage of a liquid in such a manner that when those sheets are assembled into a stack, the corresponding through-holes are aligned to form one or more internal flow passageways, and
- that the stack of sheets for said separator, electrode, and collector is retained in the condition compressed from both sides at a pressure of not less than 0.2 kg/cm2 G.
A method of treating a liquid using a flow-through capacitor essentially comprising a separator, an electrode disposed on either side thereof, and a collector disposed externally of said electrode and satisfying all of the following requirements:
- a) providing that each of the separator, electrode, and collector is an independant or folded flat sheet having a polygonal configuration;
- b) providing that said separator, electrode, and collector are disposed in a multi-layer serial arrangement of [3/2/1/2]n/3, where n is not less than 20;
- c) providing that each of said separator, electrode, and collector comprises a polygonal sheet provided with one or a plurality of through-holes for passage of a liquid in such a manner that when those sheets are assembled into a stack, the corresponding through-holes are aligned to form one or more internal flow passageways;
- and
- d) passing an ionic substance-containing liquid through said flow-through capacitor and subjecting the liquid to a combination of application of a DC constant voltage or a DC constant current to collectors and either short-circuiting between collectors or constant current discharge or a suitable combination of said application of said voltage or current, said short-circuiting or constant discharge, and reverse connection.
Dependencies are inferred from the claim text.