公开(公告)号：BR0107822A

公开(公告)日：2002-10-29

申请号：BR0107822

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: C07C51/56 ,  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, 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：NO20023513D0

公开(公告)日：2002-07-23

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：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

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vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.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：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：AU2848601A

公开(公告)日：2001-08-07

申请号：AU2848601

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

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.

公开(公告)号：AU2681001A

公开(公告)日：2001-08-07

申请号：AU2681001

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: C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C22C14/00 ,  C22C38/00 ,  C22C38/42 ,  C22C38/44 ,  C07C53/02 ,  C22C19/05

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 ).

公开(公告)号：DE10002793A1

公开(公告)日：2001-07-26

申请号：DE10002793

申请日：2000-01-24

Applicant: BASF AG

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

IPC: C07C51/56 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02 ,  B01D19/04 ,  C07C233/05

Abstract: In the production of anhydrous formic acid by hydrolysis of methyl formate followed by distillation, extraction of the bottom product with an amide extractant (I) and further distillation stages, a part-stream of (I) is taken out and fed into the first distillation column at a point between the inlet for the hydrolysis mixture and the methanol take-off point. A process for the production of (essentially) anhydrous formic acid (FA) involves: (i) hydrolysis of methyl formate (MF), (ii) removal of methanol and excess MF by distillation, (iii) liquid-liquid extraction of the bottom product with an amide of formula R (R )NC(O)R (I), (iv) distillation of the extract, (v) recycling the top product from (iv) (containing water and some FA) to the lower part of the distillation column used in stage (ii), (vi) separation of the bottom product from (iv) by distillation into anhydrous FA and extractant (I) and (vii) recycling (I) into the process from stage (vi). In this process, part of the extractant (I) is taken off and fed into the distillation unit for stage (ii) at a point above the inlet for the hydrolysis mixture and below the take-off point for methanol. R , R = alkyl, cycloalkyl, aryl or aralkyl, or R plus R plus the linking nitrogen may form a 5- or 6-membered heterocycle, with the proviso that only one of these groups is aryl; R = H or 1-4C alkyl. An Independent claim is also included for the apparatus used for this process, comprising a synthesis reactor (6), a hydrolysis reactor (1), a distillation column (2) for stage (ii), a distillation column (4) for stage (iv), an extraction unit (3), a distillation column (5) for stage (vi) and a connecting line (8) for transferring a part-stream of extractant (I) to distillation column (2).

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.