公开(公告)号：NO875046L

公开(公告)日：1988-06-06

申请号：NO875046

申请日：1987-12-03

Applicant: BASF AG

Inventor： KANNE FRIEDRICH ,  MIETZNER FRANZ GEORG ,  PFLEGER KLAUS ,  KURSAWE SIEGFRIED ,  BOETTCHER KLAUS ,  ARNOLD GERHARD

IPC: B01J19/00 ,  C08F2/00 ,  C08F2/34 ,  C08F6/00 ,  C08F10/00 ,  C08F10/02

Abstract: The pressure in a continuous high pressure polymerization system, in which ethylene, with or without comonomers, is polymerized under high pressures and temperatures and the unconverted amounts of gas are recycled through the high pressure recycle gas system into the polymerization system, is rapidly reduced to below the particular reaction pressure when predetermined limiting pressure and/or temperature values are exceeded or when other faults occur by opening one or more pressure-relief apparatuses mounted on the high pressure polymerization system and transferring the hot let-down reaction mixture from the polymerization system via one or more let-down lines through one or more separator systems into the atmosphere, by a process in which the high pressure polymerization system is divided into a plurality of isolated sections at the same time as the let-down process is triggered and only the section in which the let-down process is triggered is let down to the atmosphere. Preferably, the sections in which the let-down process is not triggered can be let down into the high pressure recycle gas system, if necessary through a product separator, in synchronization with triggering of the let-down to the atmosphere.

公开(公告)号：NO874154L

公开(公告)日：1988-04-05

申请号：NO874154

申请日：1987-10-02

Applicant: BASF AG

Inventor： KANNE FRIEDRICH ,  PFLEGER KLAUS ,  GLOMB HANS ,  ARNOLD GERHARD ,  BOETTCHER KLAUS ,  KURSHAWE SIEGFRIED

IPC: B01J3/04 ,  B01J8/00 ,  B01J19/00 ,  C08F2/00 ,  C08F2/34 ,  C08F6/00 ,  C08F6/28 ,  C08F10/00 ,  C08F ,  B01J

Abstract: Separating system (1 to 11) for tubular reactors or autoclaves used for the polymerisation of ethylene or copolymerisation of ethylene with ethylenically unsaturated comonomers in the presence of initiators at pressures of from 500 to 4000 bar and temperatures of from 150 to 350 DEG C, for reducing the emission of solids during relaxation processes of the reaction mixture present in the reactor or autoclave, characterised in that the relaxed reaction mixture is passed through at least two separating tanks (1, 1a) installed in series, before reaching the atmosphere.

公开(公告)号：NO874154D0

公开(公告)日：1987-10-02

申请号：NO874154

申请日：1987-10-02

Applicant: BASF AG

Inventor： KANNE FRIEDRICH ,  PFLEGER KLAUS ,  GLOMB HANS ,  ARNOLD GERHARD ,  BOETTCHER KLAUS ,  KURSHAWE SIEGFRIED

IPC: B01J3/04 ,  B01J8/00 ,  B01J19/00 ,  C08F2/00 ,  C08F2/34 ,  C08F6/00 ,  C08F6/28 ,  C08F10/00 ,  C08F ,  B01J

Abstract: Separating system (1 to 11) for tubular reactors or autoclaves used for the polymerisation of ethylene or copolymerisation of ethylene with ethylenically unsaturated comonomers in the presence of initiators at pressures of from 500 to 4000 bar and temperatures of from 150 to 350 DEG C, for reducing the emission of solids during relaxation processes of the reaction mixture present in the reactor or autoclave, characterised in that the relaxed reaction mixture is passed through at least two separating tanks (1, 1a) installed in series, before reaching the atmosphere.

公开(公告)号：CA845652A

公开(公告)日：1970-06-30

申请号：CA845652D

Applicant: BASF AG

Inventor： BILLE HEINZ ,  PFLEGER KLAUS ,  BRANDEIS HANS