公开(公告)号：US3654143A

公开(公告)日：1972-04-04

申请号：US3654143D

申请日：1969-12-29

Applicant: AGENCY IND SCIENCE TECHN

Inventor： KODERA YOSHIHIDE ,  SHIMADA KAZUO ,  SUZUKI MORIO ,  OHSE HIDETAKA ,  OHSHIMA SATOSHI ,  KURIKI YASUNORI ,  KATO JUN

IPC: B01J8/00 ,  C10G23/06

CPC classification number: B01J8/0015 ,  B01J8/0025 ,  B01J8/004 ,  B01J2208/00761

Abstract: IN CATALYST IN A REACTION TANK HAVING A MATERIAL FEED PIPE AT THE LOWER PORTION THEREOF AND A PRODUCT-TAKINGOUT-PIPE AT THE UPPER PORTION THEREOF, A DISCHARGE NOZZLE AND A SUCTION NOZZLE ARE PROVIDED, THE DISCHARGE NOZZLE BEING CONNECTED TO THE DISCHARGE SIDE OF A PUMP PROVIDED OUTSIDE THE REACTION TANK AND THE SUCTION NOZZLE BEING CONNECTED TO THE SUCTION SIDE OF THE PUMP, RESPECTIVELY. WHEN THE PUMP OPERATES, A REACTION LIQUID IS DISCHARGED FROM THE DISCHARGED NOZZLE AND THEN SUCKED INTO THE SUCTION NOZZLE ALONG WITH CATALYST. THUS, CATALYST IS RECOVERED IN A CATALYST RECOVERY TANK PROVIDED BETWEEN THE SUCTION NOZZLE AND THE PUMP, AND THE REACTION LIQUID IS CIRCULATED FROM THE PUMP TO THE SUCTION NOZZLE THROUGH THE DISCHARGE NOZZLE. EITHER THE DISCHARGE NOZZLE OR THE SUCTION NOZZLE

IS, AS OCCASION DEMANDS, SLID SO AS TO MAKE CONTACT WITH THE OTHER. THUS, THE INNER SURFACE OF THE SUCTION NOZZLE IS RINSED BY CIRCULATING A REACTION LIQUID, AND THEREBY CATALYST ADHERING TO THE INNER SURFACE OF THE SAID SUCTION NOZZLE IS REMOVED.