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公开(公告)号：NO20023480D0
公开(公告)日：2002-07-22
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
Abstract: The invention relates to a process for the preparation of anhydrous or substantially anhydrous formic acid. The process has the special feature that a liquid of the general formula Iwhere the radicals R and R are alkyl, cycloalkyl, aryl or aralkyl groups, or R and R 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 R is hydrogen or a C1-C4-alkyl group, employed as extractant is also employed as washing liquid for the offgases produced in the process.
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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
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公开(公告)号：AR020654A1
公开(公告)日：2002-05-22
申请号：ARP990104762
申请日：1999-09-22
Applicant: BASF AG
Inventor： TILL ADRIAN , BESSLING BERND , HASSE HANS VANSANT , FRANS THEIS GERHARD
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公开(公告)号：RU2181721C2
公开(公告)日：2002-04-27
申请号：RU98111932
申请日：1996-11-05
Applicant: BASF AG
Inventor： BESSLING BERND , TSEK SEBASTIAN , PLJUKKHAN JURGEN , MAJER TOMAS , LEFFLER UL RIKH , SHPIGEL GJUNTER , BALLENVEG RUBENS , BRUDI GERKHARD , GIZEL BERG KLAUS , KHIL PREKHT LUTTS , TERJUNG VINFRID , AUEHR KHAJNTS , POL T AKSEL VERNER , SHOLL SHTEFAN
IPC: B01D3/00 , B01D3/16 , C07D301/32 , C07D303/02 , C07D303/04
Abstract: chemical engineering. SUBSTANCE: method involves distillation of initial medium in column and withdrawal of (i) pure ethylene oxide in liquid or gas state from the top section of column and through lateral tap-off disposed in the concentrating section of column and (ii) bottom product. In emergency situations, a fire-extinguishing means is supplied to the column. Process is characterized by that the distillation column is operated at pressure 2 to 10 bar and temperature from 20 to 180 C. Mixture is passed through several in-series disposed zones with structured metal sheet inserts or charge beds arranged within the column, from which at least one zone is connected to a water source. Water functions as ethylene oxide-miscible fire- extinguishing means, which raises pressure in the column by 0.01 to 4 bar. EFFECT: optimized process parameters. 8 cl, 1 dwg
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公开(公告)号：DE59607379D1
公开(公告)日：2001-08-30
申请号：DE59607379
申请日：1996-11-05
Applicant: BASF AG
Inventor： BESSLING BERND , ZECK SEBASTIAN , PLUECKHAN JUERGEN , MAYER THOMAS , LOEFFLER ULRICH , SPIEGEL GUENTER , BALLENWEG RUBENS , BRUDI GERHARD , GIESELBERG KLAUS , HILPRECHT LUTZ , TERJUNG WINFRIED , AUER HEINZ , POLT 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.
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Patent Agency Ranking
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
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：NO327829B1
公开(公告)日：2009-10-05
申请号：NO20023513
申请日：2002-07-23
Applicant: BASF AG
Inventor： AUER HEINZ , HAMMER HANS , BESSLING BERND , HASSE HANS , SAUER FRIEDRICH , WAGNER GERHARD , ADRIAN TILL , VICARI MAXIMILIAN
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.
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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：DE50109620D1
公开(公告)日：2006-06-01
申请号：DE50109620
申请日：2001-01-24
Applicant: BASF AG
Inventor： AUER HEINZ , BESSLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , WAGNER GERHARD , ADRIAN TILL
IPC: C07C53/02 , C07C51/09 , C07C51/44 , C07C51/48 , C22C14/00 , C22C19/05 , C22C38/00 , C22C38/42 , C22C38/44
Abstract: The invention relates to an apparatus and a process for the preparation of anhydrous or substantially anhydrous formic acid. This apparatus is constructed partly or entirely of substantially zirconium-free materials. The extractant employed is a liquid of the general formula I where the radicals R 1 and R 2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R 1 and R 2 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 R 3 is hydrogen or a C 1 -C 4 -alkyl group. The apparatus has a synthesis reactor ( 6 ), a hydrolysis reactor ( 1 ), three distillation devices ( 2,4,5 ) and an extraction device ( 3 ).
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公开(公告)号：DE50107981D1
公开(公告)日：2005-12-15
申请号：DE50107981
申请日：2001-01-24
Applicant: BASF AG
Inventor： AUER HEINZ , BESSLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , WAGNER GERHARD , ADRIAN TILL
Abstract: The invention relates to a process for the preparation of anhydrous or substantially anhydrous formic acid. The process has the special feature that a liquid of the general formula Iwhere the radicals R and R are alkyl, cycloalkyl, aryl or aralkyl groups, or R and R 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 R is hydrogen or a C1-C4-alkyl group, employed as extractant is also employed as washing liquid for the offgases produced in the process.
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