公开(公告)号：US3738814A

公开(公告)日：1973-06-12

申请号：US3738814D

申请日：1969-05-08

Applicant: NAT RES DEV

Inventor： CLOETE F ,  STREAT M

IPC: B01D9/00 ,  B01D11/02 ,  B01J47/10 ,  B01D11/04

CPC classification number: B01J47/10 ,  B01D9/004 ,  B01D9/0059 ,  B01D11/0242

Abstract: APPARATUS FOR EFFECTING COUNTERCURRENT CONTINUOUS LIQUID-SOLIDS CONTACT COMPRISING A STACK OF INTERCONNECTED STAGES THROUGH WHICH ONLY LIQUID IS PULSED IN ONE DIRECTION AND ONLY SETTLED SOLIDS ARE PULSED IN THE OPPOSITE DIRECTION AFTER FIRST SETTLING IN ONE OF THE STAGES BEFORE PASSING TO THE NEXT STAGE. EACH STAGE IS CONNECTED TO THE NEXT STAGE BY A CONDUIT WHOICH COMMUNICATES WITH THE BELOW-SETTLEDSOLIDS LEVEL OF ONE STAGE AND WITH THE ABOVE-SETTLED-SOLIDS LEVEL OF THE NEXT STAGE. EACH CONDUIT INCLUDES A NONDESCENDINGG SECTION WHICH PREVENTS PASSAGE OF FLUIDIZED SOLIDS UNDER GRAVITY.