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公开(公告)号：CA2345140C
公开(公告)日：2009-06-16
申请号：CA2345140
申请日：1999-09-21
Applicant: BASF AG
Inventor： VANSANT FRANS , HASSE HANS , ADRIAN TILL , THEIS GERHARD , BESSLING BERND
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. According to the inventive method, the pressure dehydration column or at lea st the first pressure dehydration column of the cascade (2, 3, 4) has a stripping section with at least one separation stage, preferably 2- 10 separation stages, especially 3-6 stages, and in that part of the top flow of the dehydration column(s) (2, 3, 4) is sluiced out with the stripping section.
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公开(公告)号：SA1102B1
公开(公告)日：2006-08-12
申请号：SA99200783
申请日：1999-11-30
Applicant: BASF AG
Inventor： THEIS GERHARD , ADRIAN TILL , BEBLING BERND , HASSE HANS , VANSANT FRANS
Abstract: الملخص: عمليةللتقطيرالاستخلاصلاحاديايثيلينجيكول monoethylene glycol عاليالنقاءمنناتجالتحللالمائيلاكسيدالايثيلين ethylene oxide بواسطةنزعالماءبالضغط،ويفضلفيمجموعةمتواحدة،مننزعالماءبالتفريغوالتقطيرالمنقىالتالي،حيثيتماثناءنزعالماءبالتفريغحسبتيارمائييحتويعلىاحاديايثيلينجيكول monoethylene glycol بتركيزاقلمن 1% بالوزن،ويفضلاقلمن 0,1% بالوزن،ومركباتمتوسطةالغليانومركباتمنخفضةالغليان . ويتمازالةالتيارالمائيالذيتمسحبةاختياريابعدالمعالجةمرةأخرىمنالنظام.20 ،
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公开(公告)号：ES2212671T3
公开(公告)日：2004-07-16
申请号：ES99969405
申请日：1999-09-21
Applicant: BASF AG
Inventor： THEIS GERHARD , ADRIAN TILL , BESSLING BERND , HASSE HANS , VANSANT FRANS
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vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.
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公开(公告)号：DE59909416D1
公开(公告)日：2004-06-09
申请号：DE59909416
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.
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公开(公告)号：ES2194518T3
公开(公告)日：2003-11-16
申请号：ES99952457
申请日：1999-09-21
Applicant: BASF AG
Inventor： ADRIAN TILL , BESSLING BERND , HASSE HANS , VANSANT FRANS , THEIS GERHARD
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.
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Patent Agency Ranking
公开(公告)号：DE10213968A1
公开(公告)日：2003-10-30
申请号：DE10213968
申请日：2002-03-28
Applicant: BASF AG
Inventor： ASPRION NORBERT , GROSMANN CHRISTOPH , HOELEMANN KARL , THEIS GERHARD , WAHL PETER , HEFNER WERNER , BORCHERT HOLGER
IPC: C07D301/32 , C07D301/08 , C07D303/04
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公开(公告)号：PL347580A1
公开(公告)日：2002-04-08
申请号：PL34758099
申请日：1999-09-21
Applicant: BASF AG
Inventor： THEIS GERHARD , ADRIAN TILL , BESSLING BERND , HASSE HANS , VANSANT FRANS
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.
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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.
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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
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.
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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
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