公开(公告)号：US3784538A

公开(公告)日：1974-01-08

申请号：US3784538D

申请日：1971-09-20

Applicant: BASF AG

Inventor： PFANNMUELLER H ,  URBAN F ,  BUECHNER O ,  SISTIG W

IPC: B01J19/00 ,  C08F2/00 ,  C08F10/00 ,  C08F1/60 ,  C08F3/04

CPC classification number: B01J19/0006 ,  C08F10/00 ,  Y10S526/921 ,  C08F4/28

Abstract: A PROCESS FOR POLYMERIZING OLEFINS AT HIGH PRESSURE IN TUBULLAR REACTORS IN WHICH THE PRESSURE IS LOWERED AT INTERVALS FOR SHORT PRIODS, THE WHOLE OF THE TUBULAR REACTION ZONE BEING SUBDIVIDED ONE OR MORE TIME AND THE DECREASES IN PRESSURE BEING CARRIED OUT IN ONLY ONE SUBDIVISION, AND A NUMBER OF EXAMPLES OF CONSTRUCTION OF APPROPRIATE REACTION ZONES AND CONTROL EQUIPMENT OR CARRYING OUT THE PROCESS.