公开(公告)号：US3455091A

公开(公告)日：1969-07-15

申请号：US3455091D

申请日：1967-11-21

Applicant: BASF AG

Inventor： HERBER HORST ,  HAGEN WERNER ,  SCHROEDER WOLFGANG

IPC: C07C27/22 ,  C07C29/16 ,  C07C45/50 ,  C07C45/78 ,  B01D53/14 ,  B01D47/00

CPC classification number: C07C45/783 ,  C07C27/22 ,  C07C29/16 ,  C07C45/50 ,  C07C31/10 ,  C07C31/125 ,  C07C47/02

Abstract: 1,195,877. Separation of vaporous aldehydes obtained in the oxo process. BADISCHE ANILIN- & SODA FABRIK A.G. 29 Nov., 1967 [30 Nov., 1966], No. 54282/67. Heading C2C. Vaporous aldehydes are separated from offgas formed in the oxo process, by scrubbing the offgas with an oxonation product boiling above 95‹ C. and/or a hydrogenated oxonation product boiling above 95‹ C. Preferably 0À1-2 kg. of the scrubbing material is used per cubic metre of offgas to be scrubbed. Examples recover (a) propionaldehyde by scrubbing the oxo product obtained from ethylene, carbon monoxide and water with a mixture comprising npropanol, para-propionaldehyde and higher boiling condensation products of propionaldehyde, (b) n - butyraldehyde and isobutyraldehyde. Valeraldehyde is also particularly suitable for separation by the method of the invention.