PROCESS FOR OBTAINING ALDEHYDES
    2.
    发明专利

    公开(公告)号:DE3260698D1

    公开(公告)日:1984-10-18

    申请号:DE3260698

    申请日:1982-03-30

    Applicant: BASF AG

    Abstract: Aldehydes are obtained from the gaseous product of the hydroformylation of olefinically unsaturated compounds using a rhodium catalyst by a process (cf. FIG. 2) in which (a) this gaseous product is introduced, without being cooled or depressured, into a distillation column D, (b) the top fraction from this column is cooled in a condenser K so that the greater part of the aldehydes contained therein is condensed, (c) the condensate is separated, in a separator A, into a gas phase and a liquid phase, (d) the gas phase from A, after waste gas has been separated off, is again brought to the hydroformylation pressure by means of a compressor P, and is returned to the reactor as a recycle gas, (e) the liquid phase from A is returned to D, and (f) the aldehydes are taken off from column D as liquid bottom products and/or as a vaporous side stream.

    OBTAINING ALDEHYDES
    3.
    发明专利

    公开(公告)号:CA1173060A

    公开(公告)日:1984-08-21

    申请号:CA399835

    申请日:1982-03-30

    Applicant: BASF AG

    Abstract: O. Z. OO5O/35O76 Aldehydes are obtained from the gaseous product of the hydroformylation of olefinically unsaturated compounds using a rhodium catalyst by a process (cf. Figure 2) in which a) this gaseous product is introduced, without being cooled or let down, into a distillation column D, b) the top fraction from this column is cooled in a condenser K so that the greater part of the aldehydes contained therein is condensed, c) the condensate is separated, in a separator A, into a gas phase and a liquid phase, d) the gas phase from A, after waste gas has been separa ted off, is again brought to the synthesis pressure by means of a compressor P, and is returned to the reactor as a recycle gas, e) the liquid phase from A is returned to D, and f) the aldehydes are taken off from column D as liquid bottom products and/or as a vaporous side stream.

    CONTINUOUS MANUFACTURE OF FORMAMIDE

    公开(公告)号:CA1072118A

    公开(公告)日:1980-02-19

    申请号:CA277695

    申请日:1977-05-04

    Applicant: BASF AG

    Abstract: O.Z. 32,004 Formamide is manufactured continuously from methyl formate and gaseous ammonia. The reaction is carried out in a reactor at from 30 to 90.degree.C, from 5 to 20% by volume of the reactor output is drawn off continuously and fed to the formamide working-up stage, and the remainder of the reactor output is cooled, in an external circuit maintained by means of a pump, to from 25 to 60.degree.C and is mixed with the amount of fresh methyl formate required for steady-state operation, after which the appropriate amount of gaseous ammonia is introduced into the stream of liquid through a jet, by the sucking-jet principle, and the stream of liquid is recycled to the reactor.

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