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Abstract

Use of a method for reduction of heavy end formation and catalyst loss in a hydroformylation process, wherein the method comprises the steps;

a) Reacting an olefin and syngas in a reactor assembly (1) utilizing at least one catalyst and at least one ligand,b) Separating an obtained aldehyde from a mixture of aldehyde, catalyst, ligand and early heavy ends in a distillation unit (2),c) Entering the mixture of catalyst, ligand, early heavy ends and rest aldehyde into a short residence time evaporator unit (3) having at least a first rest aldehyde stripper stage (3a) and at least one last early heavy ends stripper stage (3b). Said evaporator units (3) being of a falling film and/or wiped film type,d) That the catalyst/ligand mixture from a lower end (3b1) of the at least one last early heavy ends stripping stage (3b) is entered into a cooling unit (4) immediately after stripping of early heavy ends.

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First Claim