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    FACILITY AND METHOD FOR THE PRODUCTION OF ANHYDROUS FORMIC ACID
    1.
    发明申请
    FACILITY AND METHOD FOR THE PRODUCTION OF ANHYDROUS FORMIC ACID 审中-公开
    SYSTEM AND METHOD FOR WATER FREE FORMIC生产

    公开(公告)号：WO0155077A3

    公开(公告)日：2002-02-07

    申请号：PCT/EP0100748

    申请日：2001-01-24

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

    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

    CPC classification number: C22C38/44 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C22C14/00 ,  C22C38/001 ,  C22C38/42 ,  C07C53/02

    Abstract: The invention concerns a device and a method for obtaining anhydrous or substantially anhydrous formic acid. Said device is partly or totally made of a zirconium-free material. A liquid of general formula (I) is used as extracting agent, wherein radicals R and R represent alkyl, cycloalkyl, aryl or aralkyl groups or R and R form together with the N atom a heterocyclic five or six-membered ring and in which only one of the radicals is an aryl group and in which R stands for hydrogen or a C1-C4-alkyl group. The device comprises the following equipment: (i) a synthesis reactor (6); (ii) a hydrolysis reactor (1); (iii) a first distillation device (2); (iv) a second distillation device (4); (v) an extraction device (3) and (vi) a third distillation device (5). The material has been selected from the group consisting of the following classes of materials: titanium-palladium alloys, nickel-based materials containing chrome, molybdenum, and/or wolfram and high-alloy, austenitic special chrome-nickel steels containing molybdenum.

    Abstract translation: 本发明涉及一种装置和用于获得无水或基本上无水的甲酸的方法。 该装置部分地或完全地由zirkoniumarmen材料构成。 作为提取手段是通式（I）的液体被使用，其中基团R <1>和R <2>表示或烷基，环烷基，芳基或芳烷基的基团R <1>和R <2>连同 的N原子形成杂环5或6元环，且其中仅一个基团是芳基和<3>，其中R是氢或C1-C4烷基。 该装置包括下列装置（I）的合成反应器（6），（II）的水解反应器（1），（iii）第一蒸馏装置（2），（iv）第二蒸馏装置（4），（v）的提取装置 （3）和（vi）第三蒸馏装置（5）。 所述材料是选自以下组的材料类钛 - 钯合金，铬，钼和/或含钨的镍基材料和含钼高合金化的奥氏体铬 - 镍特种钢。

    4.
    发明专利
    未知

    公开(公告)号：NO327850B1

    公开(公告)日：2009-10-05

    申请号：NO20023515

    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

    IPC: C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C22C14/00 ,  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 ).

    6.
    发明专利
    未知

    公开(公告)号：DK1523477T3

    公开(公告)日：2006-01-16

    申请号：DK03763731

    申请日：2003-07-07

    Applicant: BASF AG

    Inventor： KAIBEL GERD ,  MERGER MARTIN ,  DOMSCHKE THOMAS ,  DECKERT PETRA ,  SAUER FRIEDRICH

    IPC: C07D307/62

    Abstract: The invention relates to a method for the separation of ascorbic acid from a mixture containing ascorbic acid and 2-keto-L-gulonic acid in a polar, preferably aqueous solvent, by means of liquid/liquid extraction using an amide. The method preferably also comprises steps for the back-extraction of the ascorbic acid, recycling of the extraction solvent and/or the back extraction solvent and for isolation of the ascorbic acid from the back extraction solvent. The invention further relates to a method for the production of ascorbic acid from KGA and isolation of the ascorbic acid so produced.

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