公开(公告)号：US3533507A

公开(公告)日：1970-10-13

申请号：US3533507D

申请日：1968-06-11

Applicant: PATERSON CANDY INT

Inventor： AITKEN ROBERT WILLIAM

IPC: B01D24/38 ,  B01D23/24

CPC classification number: B01D24/4636 ,  B01D24/22 ,  B01D2201/087

公开(公告)号：US3682312A

公开(公告)日：1972-08-08

申请号：US3682312D

申请日：1970-06-05

Applicant: PATERSON CANDY INT

Inventor： STEVENSON DAVID GORDON

IPC: B01D15/04 ,  B01J47/04 ,  B01D23/10

CPC classification number: B01J47/04

Abstract: A continuous ion-exchange apparatus having a multi-stage open ion-exchange column and a multi-stage closed regenerator column in which the mixed resins from the lower part of the ion exchange column are withdrawn by means of a pipe and are conveyed to an air cavity at the top of the regenerator column while there is a pipe connecting the bottom of the regenerator column to a point above the level of the surface of the liquid in the ion-exchange column and the resins are induced to flow by alternately supplying a sub-atmospheric pressure or a super-atmospheric pressure at the cavity at the top of the regenerator column by the alternative operation of valves controlling the sub- and super-atmospheric pressures.