Process of controlling heavies in a recycle catalyst stream

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 45/50 (2006.01)

Patent

CA 2729643

A process of controlling heavies in a recycle catalyst stream, particularly, for use in a continuous hydroformylation process of converting an olefin with synthesis gas in the presence of a hydroformylation catalyst to form an aldehyde product stream with subsequent separation of the catalyst for recycle to the hydroformylation step. Heavies are controlled, and preferably reduced, by means of feeding a recycle gas stream, taken as a portion of an overhead stream from a condenser, back to a vaporizer wherein the aldehyde product stream is separated.

L'invention concerne un procédé de régulation des métaux lourds dans un flux de catalyseur de recyclage, en particulier, pour l'utilisation dans un processus d'hydroformylation continu de conversion d'une oléfine avec un gaz de synthèse en présence d'un catalyseur d'hydroformylation pour former un flux de produit aldéhyde avec la séparation ultérieure du catalyseur pour le recyclage vers l'étape d'hydroformylation. Les métaux lourds sont régulés, et de préférence réduits, par l'intermédiaire d'une alimentation d'un flux de gaz de recyclage, pris en tant que partie d'un flux de tête provenant d'un condenseur, en retour vers un vaporiseur dans lequel le flux de produit aldéhyde est séparé.

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