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    43.
    发明专利
    未知

    公开(公告)号：DE50103216D1

    公开(公告)日：2004-09-16

    申请号：DE50103216

    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.

    Production of anhydrous formic acid involves hydrolysis of methyl formate followed by distillation, extraction with amide and further distillations, using the amide also as a foam suppressant in first distillation stage
    48.
    发明专利
    Production of anhydrous formic acid involves hydrolysis of methyl formate followed by distillation, extraction with amide and further distillations, using the amide also as a foam suppressant in first distillation stage 未知

    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).

    Process for preparing hydrogenation catalyst
    49.
    发明专利
    Process for preparing hydrogenation catalyst 未知

    公开(公告)号：CZ288323B6

    公开(公告)日：2001-05-16

    申请号：CZ197597

    申请日：1995-12-16

    Applicant: BASF AG

    Inventor： VICARI MAXIMILIAN ,  FLICK KLEMENS ,  MELDER JOHANN-PETER ,  SCHNURR WERNER ,  WULFF-DOERING JOACHIM

    IPC: B01J25/00 ,  B01J25/02 ,  B01J37/00 ,  C07B31/00 ,  C07C253/30

    Abstract: The proposed process for preparing a hydrogenation catalyst based on aluminium alloy and a transient metal is characterized by preparation of a kneading material from the alloy and an auxiliary agent, the kneading material is then formed to shaped bodies, the shaped bodies are subjected to calcination and the calcined shaped bodies are then treated with an alkali metal hydroxide, whereby the auxiliary agent is represented by (a) polyvinyl alcohol and water or (b) stearic acid. The catalyst is intended for hydrogenation and hydrogenolysis, particularly a partial hydrogenation of aliphatic alpha, omega-dinitriles to aliphatic alpha, omega-aminonitriles.

    50.
    发明专利
    未知

    公开(公告)号：DE19935038A1

    公开(公告)日：2001-02-01

    申请号：DE19935038

    申请日：1999-07-26

    Applicant: BASF AG

    Inventor： AUER HEINZ ,  DAHLHAUS JUERGEN ,  FISCHER KARL ,  HAMMER HANS ,  KELLENBENZ JOCHEN ,  SCHULZ MICHAEL ,  THIEL JOACHIM ,  VICARI MAXIMILIAN

    IPC: B01D3/00 ,  B01J3/00 ,  B01J3/02 ,  B01J19/00 ,  C07B61/00 ,  C07C29/80 ,  C07C31/04 ,  C07C67/36 ,  C07C69/06 ,  C07C67/54

    Abstract: The invention relates to a method of producing methyl formiate by reacting excess methanol with carbon monoxide under increased pressure and increased temperature in the presence of an alkalimethylate or alkaline earth methylate as the catalyst in a pressure-proof reactor. The inventive method uses at least two reactor elements, preferably countercurrent reactors, at a temperature of approximately 100 DEG C and a pressure of approximately 100 bar in combination with a solid-matter free desalination of the reactor product. The inventive method provides a means for producing methyl formiate of any quality desired and with an excellent production capacity in a very economical and complication-free manner. The invention further relates to a method of solid-matter free desalination and to devices for carrying out the inventive method.

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