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    RECOVERY OF FORMIC ACID BY DISTILLATION
    1.
    发明专利
    RECOVERY OF FORMIC ACID BY DISTILLATION 未知

    公开(公告)号：CA1211736A

    公开(公告)日：1986-09-23

    申请号：CA455386

    申请日：1984-05-29

    Applicant: BASF AG

    Inventor： BOTT KASPAR ,  KAIBEL GERD ,  HARTMANN HORST ,  IRNICH RUDOLF ,  BUELOW HORST

    IPC: C07C53/02 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00

    Abstract: Formic acid is recovered, by distillation, from its mixtures with solvents of the general formula I where R1 is hydrogen, methyl, ethyl or vinyl and R2 and R3 are each alkyl, cycloalkyl, aryl or aralkyl, or R2 and R3 together form a 1,4- or 1,5-alkylene group of 1 to 8 carbon atoms, with the provisos that the sum of the number of carbon atoms in R2 and R3 is 7 to 14 and that only one of these radicals is aryl, by a method in which the distillation is carried out in the presence of a carboxamide II which has a boiling point lower than that of the solvent I.

    7.
    发明专利
    未知

    公开(公告)号：FI56668C

    公开(公告)日：1980-03-10

    申请号：FI171972

    申请日：1972-06-15

    Applicant: BASF AG

    Inventor： HOHENSCHUTZ HEINZ ,  FRANZ DIETER ,  BUELOW HORST ,  DINKHAUSER GUENTER

    IPC: B01D1/00 ,  C07C51/14 ,  C07C51/487 ,  C07C53/22

    Abstract: A process for the production of propionic acid which comprises the reaction of ethylene with carbon monoxide and water in the presence of a nickel carbonyl complex at a temperature of from 250 DEG to 320 DEG C in the liquid phase and at a pressure of from 100 to 300 atmospheres in a vertical cylindrical reaction zone, a gaseous zone being maintained at the upper end of the reaction zone and a bottom zone being maintained at the lower end of the reaction zone which is not in communication with said reaction zone over the entire cross section.

    9.
    发明专利
    未知

    公开(公告)号：NO137781B

    公开(公告)日：1978-01-16

    申请号：NO221472

    申请日：1972-06-21

    Applicant: BASF AG

    Inventor： HOHENSCHUTZ HEINZ ,  FRANZ DIETER ,  BUELOW HORST ,  DINKHAUSER GUENTHER

    IPC: C07C51/14 ,  C07C51/487 ,  B01D1/00 ,  C07C53/22

    Abstract: A process for the production of propionic acid which comprises the reaction of ethylene with carbon monoxide and water in the presence of a nickel carbonyl complex at a temperature of from 250 DEG to 320 DEG C in the liquid phase and at a pressure of from 100 to 300 atmospheres in a vertical cylindrical reaction zone, a gaseous zone being maintained at the upper end of the reaction zone and a bottom zone being maintained at the lower end of the reaction zone which is not in communication with said reaction zone over the entire cross section.

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