公开(公告)号：CA2278574A1

公开(公告)日：1998-08-06

申请号：CA2278574

申请日：1998-01-29

Applicant: BASF AG

Inventor： MAYER THOMAS ,  AUER HEINZ ,  BESSLING BERND ,  HASSE HANS ,  PLUECKHAN JUERGEN

IPC: C07D301/32 ,  C07D303/04 ,  B01D3/32

Abstract: In a pure ethylene oxide distillation process, an aqueous mixture containing ethylene oxide, formaldehyde and at least 5 % by weight water is supplied via an inlet to a distillation device with at least one distillation column at a height above the column bottom of at least 8 theoretical stages. The ethylene oxide is removed at the head of the column and a mixture is obtained at the bottom of the column with less than 5 % by weight ethylene oxide.

公开(公告)号：AU7565096A

公开(公告)日：1997-06-11

申请号：AU7565096

申请日：1996-11-05

Applicant: BASF AG

Inventor： BESSLING BERND ,  ZECK SEBASTIAN ,  PLUCKHAN JURGEN ,  MAYER THOMAS ,  LOFFLER ULRICH ,  SPIEGEL GUNTER ,  BALLENWEG RUBENS ,  BRUDI GERHARD ,  GIESELBERG KLAUS ,  HILPRECHT LUTZ ,  TERJUNG WINFRIED ,  AUER HEINZ ,  POLT AXEL WERNER ,  SCHOLL STEPHAN

IPC: B01D3/00 ,  B01D3/16 ,  C07D301/32 ,  C07D303/02 ,  C07D303/04

Abstract: PCT No. PCT/EP96/04818 Sec. 371 Date May 18, 1998 Sec. 102(e) Date May 18, 1998 PCT Filed Nov. 5, 1996 PCT Pub. No. WO97/19069 PCT Pub. Date May 29, 1997A process for distilling ethylene oxide out of a mixture including ethylene oxide in a column at an absolute pressure of from 2 to 10 bar and a temperature of 20 to 180 DEG C. by withdrawing pure ethylene oxide in the liquid or gaseous state overhead or via a sidestream in the rectifying section of the column includes effecting the distillation in a column having on its inside a plurality of successive zones of structured sheet-metal packing or dumped beds of packing elements, these zones being assigned one or more extinguishing systems on the outside of the column.

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：MY122327A

公开(公告)日：2006-04-29

申请号：MYPI20003800

申请日：2000-08-18

Applicant: BASF AG

Inventor： PESCHEL WERNER DR ,  BESSLING BERND ,  REUTER PETER DR ,  LORZ PETER MICHAEL DR ,  ULRICH BERNHARD DR ,  KNAB JEAN WERNER ,  KUMMER MATTHIAS DR ,  XDCHL THOMAS R DR

IPC: C07D307/89 ,  B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  C07C51/573 ,  C07C63/16

Abstract: ON-SPEC PHTHALIC ANHYDRIDE IS PREPARED BY DISTILLATIVE PURIFICATION OF CRUDE PHTHALIC ANHYDRIDE BY A PROCESS IN WHICH CRUDE PHTHALIC ANHYDRIDE IS FED TO A DISTILLATION COLUMN WHICH IS OPERATED AT REDUCED PRESSURE, THE LOW BOILERS ARE REMOVED AT THE TOP OR IN THE VICINITY OF THE TOP OF THE DISTILLATION COLUMN AND THE ON-SPEC PHTHALIC ANHYDRIDE IS REMOVED FROM THE COLUMN VIA A SIDE TAKE-OFF.

公开(公告)号：AT302178T

公开(公告)日：2005-09-15

申请号：AT00958412

申请日：2000-08-10

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  BESSLING BERND ,  REUTER PETER ,  LORZ PETER MICHAEL ,  ULRICH BERNHARD ,  KNAB JEAN WERNER ,  KUMMER MATTHIAS ,  RUEHL THOMAS

IPC: B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  C07C51/573 ,  C07C63/16 ,  C07D307/89

Abstract: On-spec phthalic anhydride is prepared by distillative purification of crude phthalic anhydride by a process in which crude phthalic anhydride is fed to a distillation column which is operated at reduced pressure, the low boilers are removed at the top or in the vicinity of the top of the distillation column and the on-spec phthalic anhydride is removed from the column via a side take-off.

公开(公告)号：AT273265T

公开(公告)日：2004-08-15

申请号：AT01915134

申请日：2001-01-12

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDRICH ,  VICARI MAXIMILIAN ,  ADRIAN TILL

IPC: C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02

Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is produced by hydrolysis of methyl formate, with the methanol content in the methyl formate having been reduced in advance. The process according to the invention has the special feature that-before the hydrolysis of the methyl formate-the methanol content of the methanol-containing methyl formate is reduced in a distillation column, this distillation column simultaneously being employed for other separation functions during work-up of the formic acid.

公开(公告)号：NO20023513L

公开(公告)日：2002-08-26

申请号：NO20023513

申请日：2002-07-23

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDRICH ,  VICARI MAXIMILIAN ,  WAGNER GERHARD ,  ADRIAN TILL

IPC: C07C51/56 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02 ,  C07C

Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid in which, during the work-up, a compound of the general formula Iwhere the radicals R1 and R2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R1 and R2 jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R3 is hydrogen or a C1-C4-alkyl group,is employed simultaneously as extractant for formic acid and as antifoam for a distillation process.

公开(公告)号：NO20023480A

公开(公告)日：2002-08-22

申请号：NO20023480

申请日：2002-07-22

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDRICH ,  VICARI MAXIMILIAN ,  WAGNER GERHARD ,  ADRIAN TILL

IPC: C07C51/56 ,  B01J14/00 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02 ,  C07C

CPC classification number: C07C51/445 ,  B01J14/00 ,  B01J2219/00006 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02

公开(公告)号：NO20023481A

公开(公告)日：2002-08-21

申请号：NO20023481

申请日：2002-07-22

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDRICH ,  VICARI MAXIMILIAN ,  ADRIAN TILL

IPC: B01J14/00 ,  C07C27/02 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02 ,  C07C

CPC classification number: C07C51/445 ,  B01J14/00 ,  B01J2219/00006 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02

公开(公告)号：NO20023514D0

公开(公告)日：2002-07-23

申请号：NO20023514

申请日：2002-07-23

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDRICH ,  VICARI MAXIMILIAN ,  ADRIAN TILL

IPC: C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02 ,  C07C

Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is produced by hydrolysis of methyl formate, with the methanol content in the methyl formate having been reduced in advance. The process according to the invention has the special feature that-before the hydrolysis of the methyl formate-the methanol content of the methanol-containing methyl formate is reduced in a distillation column, this distillation column simultaneously being employed for other separation functions during work-up of the formic acid.