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vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.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：CA2345053C

公开(公告)日：2008-07-15

申请号：CA2345053

申请日：1999-09-21

Applicant: BASF AG

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

IPC: C07C29/80 ,  C07C29/10 ,  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 boilers is drawn off and then sluiced out, optionally after reprocessing.

公开(公告)号：AR020655A1

公开(公告)日：2002-05-22

申请号：ARP990104764

申请日：1999-09-22

Applicant: BASF AG

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

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

公开(公告)号：DE19855910A1

公开(公告)日：2000-06-08

申请号：DE19855910

申请日：1998-12-03

Applicant: BASF AG

Inventor： VANSANT FRANS ,  DE HERT JOZEF ,  KOEFFER DIETER ,  THEIS GERHARD ,  TERJUNG WINFRIED

IPC: B01D1/22 ,  B08B3/08 ,  B08B9/08 ,  B01D1/00 ,  B01D3/00

Abstract: The rinsing apparatus for removing residue from the sump run-off of an evaporator comprises (a) a run-off container (7), (b) a collector container (8), (c) a run-off valve (10), (d) a rinsing water valve (11), (e) run-off container valve (12), (f) rinsing run-off valve (13), (g) vent valve (14), (h) a delivery pipe (17) from the sump to the run-off valve (10), (i) a inlet pipe (3) for the rinsing agent, (j) a run-off pipe device (6,16) and a connector to the devices (a) to (j). An Independent claim is included for the use of a rinsing apparatus.

公开(公告)号：AU6466399A

公开(公告)日：2000-04-10

申请号：AU6466399

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：DE19843697A1

公开(公告)日：2000-03-30

申请号：DE19843697

申请日：1998-09-23

Applicant: BASF AG

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

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 boilers is drawn off and then sluiced out, optionally after reprocessing.

公开(公告)号：DE19843652A1

公开(公告)日：2000-03-30

申请号：DE19843652

申请日：1998-09-23

Applicant: BASF AG

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

IPC: C07C29/10 ,  C07C29/76 ,  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. According to the inventive method, the pressure dehydration column or at least 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.

公开(公告)号：CA2343767A1

公开(公告)日：2000-03-30

申请号：CA2343767

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: The invention relates to a method for optimizing the specific energy consumption of a method for producing ethylene oxide by direct oxidization o f ethylene with air or oxygen, using water as the heat transfer medium for removing the heat of the reaction so that water vapor is formed. According t o the invention, the water vapor is first expanded in one or several back pressure steam turbine(s) T for operating machines M before being supplied f or use by one or several other consumers, such as bottom evaporators or steam injectors.