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

Inventor： FISCHER KARL ,  GRENACHER ARMIN V ,  HERR MANFRED ,  STROHMEYER MAX

IPC: B01J23/00 ,  B01J23/46 ,  C07B61/00 ,  C07C45/00 ,  C07C45/50 ,  C07C45/81 ,  C07C45/82 ,  C07C47/02 ,  C07C67/00

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.