公开(公告)号：CA1065545A

公开(公告)日：1979-10-30

申请号：CA252149

申请日：1976-05-10

Applicant: BASF AG

Inventor： BUECHNER OSKAR ,  SCHLICHTHAERLE GOTTFRIED ,  URBAN FRIEDRICH

IPC: C08F6/00 ,  C08F2/00 ,  C08F6/06 ,  C08F10/02 ,  C08F110/02

Abstract: A process for the manufacture of ethylene polymers by high pressure polymerization of ethylene, if desired mixed with other compounds copolymerizable with ethylene, and isolation of the reaction product in a multi-stage isolation zone. The molecular weight of the ethylene polymer can be varied by varying the mean product residence time in the isolation zone. The isolation zone preferably consists of two stages, with a higher pressure prevailing in the first stage than in the second stage.

公开(公告)号：DK250184A

公开(公告)日：1984-11-26

申请号：DK250184

申请日：1984-05-22

Applicant: BASF AG ,  LINDE AG

Inventor： BROECKER FRANZ JOSEF ,  DUEMBGEN GERD ,  PIES WOLFGANG ,  SCHLICHTHAERLE GOTTFRIED ,  WEBER GUENTHER

IPC: C07C29/15 ,  C07C29/154 ,  C07C31/04 ,  C07C

Abstract: Methanol is prepared by catalytic conversion of a synthesis gas mixture, containing hydrogen, carbon monoxide, carbon dioxide and/or water, at from 200 DEG to 320 DEG C. and under from 30 to 300 bar in adiabatic and/or isothermal reactions in the presence of a catalyst containing copper and zinc, by a process in which the fresh catalyst is reduced with a hydrogen-containing gas before the start-up of the process, and then the synthesis is started under conventional conditions and is continued until the formation of methanol in the reaction zone has declined substantially, after which the reaction is interrupted and the catalyst is regenerated.

公开(公告)号：CA1273916A

公开(公告)日：1990-09-11

申请号：CA479477

申请日：1985-04-18

Applicant: BASF AG

Inventor： DIERKE RUEDIGER ,  SCHLICHTHAERLE GOTTFRIED ,  SCHUCHART PETER ,  SCHWEITZER ARMIN

IPC: C01B3/32 ,  C01B3/36 ,  F16L53/00 ,  F28D7/10 ,  F28F13/06 ,  B01J8/06

Abstract: Heat is removed from, or supplied to, a vertical pipe of any cross-section, whose internal temperature is above or below the ambient temperature and whose wall temperature must neither exceed nor fall below a predetermined temperature range, by a method in which, in order to maintain the predetermined temperature range, the pipe is provided with a coaxial sheath and gas is passed through the gap between the pipe and the sheath.

公开(公告)号：DK250184D0

公开(公告)日：1984-05-22

申请号：DK250184

申请日：1984-05-22

Applicant: BASF AG ,  LINDE AG

Inventor： BROECKER FRANZ JOSEF ,  DUEMBGEN GERD ,  PIES WOLFGANG ,  SCHLICHTHAERLE GOTTFRIED

IPC: C07C29/15 ,  C07C29/154 ,  C07C31/04 ,  C07C31

Abstract: Methanol is prepared by catalytic conversion of a synthesis gas mixture, containing hydrogen, carbon monoxide, carbon dioxide and/or water, at from 200 DEG to 320 DEG C. and under from 30 to 300 bar in adiabatic and/or isothermal reactions in the presence of a catalyst containing copper and zinc, by a process in which the fresh catalyst is reduced with a hydrogen-containing gas before the start-up of the process, and then the synthesis is started under conventional conditions and is continued until the formation of methanol in the reaction zone has declined substantially, after which the reaction is interrupted and the catalyst is regenerated.

公开(公告)号：DE10130670A1

公开(公告)日：2003-01-23

申请号：DE10130670

申请日：2001-06-28

Applicant: BASF AG

Inventor： STABEL UWE ,  BIRNBAUM EBERHARD ,  RIZK FARID ,  SCHLICHTHAERLE GOTTFRIED

IPC: B01J8/10 ,  B01J8/12 ,  C07C5/333 ,  B01J8/00 ,  C07C11/06 ,  C07C15/46

Abstract: The invention relates to the implementation of heterogeneous catalytic reactions in a moving-bed reactor. Expansion volumes for the catalyst are provided in the defining walls of the catalyst bed, said volumes being easily created by means of at least two graduated conical-or polygonal-frustrum-shaped walls. Said implementation reduces the catalyst abrasion and avoids damaging the catalyst screens.

公开(公告)号：CA1070899A

公开(公告)日：1980-01-29

申请号：CA252151

申请日：1976-05-10

Applicant: BASF AG

Inventor： BUECHNER OSKAR ,  SCHLICHTHAERLE GOTTFRIED ,  URBAN FRIEDRICH

IPC: C08F6/00 ,  C08F2/00 ,  C08F6/06 ,  C08F10/02 ,  C08F110/02 ,  C08F2/02

Abstract: A process for the manufacture of ethylene polymers by high pressure polymerization of ethylene, if desired mixed with other compounds copolymerizable with ethylene, and isolation of the reaction product in a multi-stage isolation zone. The molecular weight of the ethylene polymer can be varied by varying the temperature prevailing in the isolation zone. The isolation zone preferably consists of two stages, with a higher pressure prevailing in the first stage than in the second stage.

公开(公告)号：CA1070449A

公开(公告)日：1980-01-22

申请号：CA252138

申请日：1976-05-10

Applicant: BASF AG

Inventor： MIETZNER FRANZ G ,  BUECHNER OSKAR ,  STEIGERWALD KLAUS ,  SCHLICHTHAERLE GOTTFRIED ,  URBAN FRIEDRICH

IPC: C08F6/00 ,  C08F2/00 ,  C08F6/06 ,  C08F10/02 ,  C08F110/02

Abstract: A process for the manufacture of ethylene polymers by homopolymerization and copolymerization of ethylene at pressures of from 500 to 5,000 bars and at from 50 to 450.degree.C, with subsequent isolation of the polymers in high pressure product isolation zones and low pressure product isolation zones. The various parallel product isolation zones are at different temperatures, and the mean product residence times in the zones may be identical or different. Very different products, in amounts which can be chosen according to requirements, and with mutually independent polymer properties, can be obtained using only one high pressure polymerization system.