公开(公告)号：PL346778A1

公开(公告)日：2002-02-25

申请号：PL34677899

申请日：1999-09-20

Applicant: BASF AG

Inventor： THEIS GERHARD ,  VANSANT FRANS

IPC: F01K27/02 ,  C07C29/10 ,  C07C29/80 ,  C07C31/20 ,  C07D301/08 ,  C07D301/10 ,  C07D301/32 ,  C07D303/04 ,  F22B1/18

Abstract: In the preparation of ethylene oxide by direct oxidation of ethylene with air or oxygen using water as heat carrier to dissipate the heat of reaction, with water vapor being formed, a process for optimizing the specific energy consumption is proposed. In this, the water vapor is first expanded in one or more backpressure steam turbine(s) T for operating working machines M, before it is fed to one or more consumers, such as bottoms reboilers or steam injectors, for further utilization.

公开(公告)号：PL346752A1

公开(公告)日：2002-02-25

申请号：PL34675299

申请日：1999-09-21

Applicant: BASF AG

Inventor： ADRIAN TILL ,  BESSLING BERND ,  HASSE HANS ,  VANSANT FRANS ,  THEIS GERHARD

IPC: C07C29/10 ,  C07C29/76 ,  C07C29/80 ,  C07C31/20

Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis product of ethylene oxide by pressure dewatering, vacuum dewatering and subsequent purifying distillation, which includes the pressure dewatering columns or at least the first pressure dewatering column of the battery (2, 3, 4) having a stripping section with at least one separating stage, preferably with from 2 to 10 separating stages, particularly preferably with from 3 to 6 stages, and a portion of the overhead stream of the pressure dewatering column(s) (2, 3, 4) having a stripping section being removed from the system.

公开(公告)号：DK0880491T3

公开(公告)日：2001-09-03

申请号：DK97901073

申请日：1997-01-21

Applicant: BASF AG

Inventor： MOHR JUERGEN ,  VANSANT FRANS

IPC: C08J5/18 ,  C07C29/80 ,  C07C29/94 ,  C07C31/20 ,  C08G63/12 ,  C08G63/16 ,  C08G63/672 ,  D01F6/62

Abstract: PCT No. PCT/EP97/00271 Sec. 371 Date Jul. 16, 1998 Sec. 102(e) Date Jul. 16, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/27164 PCT Pub. Date Jul. 31, 1997A process for obtaining glycols of low aldehyde content in which the plant used to obtain the glycol(s) is surface-treated, in whole or in part, with at least one reductive phosphorus compound.

公开(公告)号：AU6192899A

公开(公告)日：2000-04-10

申请号：AU6192899

申请日：1999-09-20

Applicant: BASF AG

Inventor： ADRIAN TILL ,  HASSE HANS ,  VANSANT FRANS ,  THEIS GERHARD

IPC: C07C29/10 ,  C07D301/32

公开(公告)号：AU5980199A

公开(公告)日：2000-04-10

申请号：AU5980199

申请日：1999-09-21

Applicant: BASF AG

Inventor： THEIS GERHARD ,  ADRIAN TILL ,  BESSLING BERND ,  HASSE HANS ,  VANSANT FRANS

IPC: C07C29/10 ,  C07C29/80 ,  C07C31/20

Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.

公开(公告)号：CA2345053A1

公开(公告)日：2000-03-30

申请号：CA2345053

申请日：1999-09-21

Applicant: BASF AG

Inventor： VANSANT FRANS ,  THEIS GERHARD ,  BESSLING BERND ,  ADRIAN TILL ,  HASSE HANS

IPC: C07C29/10 ,  C07C29/80 ,  C07C31/20

Abstract: The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. During the vacuum dehydration, an aqueous stream containing monoethylene glycol in a concentration of less than 1 wt. %, preferably less than 0.1 wt. %, medium boilers and light boile rs is drawn off and then sluiced out, optionally after reprocessing.

公开(公告)号：DE19602116A1

公开(公告)日：1997-07-24

申请号：DE19602116

申请日：1996-01-22

Applicant: BASF AG

Inventor： MOHR JUERGEN DR ,  VANSANT FRANS

IPC: C08J5/18 ,  C07C29/80 ,  C07C29/94 ,  C07C31/20 ,  C08G63/12 ,  C08G63/16 ,  C08G63/672 ,  D01F6/62 ,  C07C29/74

Abstract: The invention concerns a method of obtaining glycols having a low aldehyde content, the system used for obtaining the glycols being surface-treated completely or partially with at least one reducing phosphorus compound.