Patent ID: 10946304

Abstract:
A process for the separation of an aldehyde and a second component from a feed stream (3a, 3b, 3c) comprising the aldehyde and the second component, said process comprising: providing the feed stream to one or both of a first separation vessel (1) operating at a first pressure and a second separation vessel (2) operating at a second pressure wherein said second pressure (2) is greater than said first pressure; operating said first separation vessel (1) and said second separation vessel (2) such that separation occurs; recovering an aldehyde product stream (4) from at or near the bottom of the first separation vessel (1), said aldehyde product stream (4) having a concentration of aldehyde which is higher than that in the feed stream (3a, 3b, 3c); recovering a second component stream (8) from at or near the top of the second separation vessel (2), said second component stream having a concentration of second component which is higher than in the feed stream (3a, 3b, 3c); removing a first recycle stream (5, 6) from at or near the top of the first separation vessel (1) and feeding it to the second separation vessel (2); and removing a second recycle stream (9, 10) from at or near the bottom of the second separation vessel (2) and feeding it to the first separation vessel (1).