公开(公告)号：US11981629B2

公开(公告)日：2024-05-14

申请号：US17624862

申请日：2020-06-23

Applicant: PERSTORP AB

Inventor： Matias Kangas ,  Stefan Nilsson

IPC: B01D3/14 ,  B01D3/42 ,  B01J31/18 ,  C07C45/86

CPC classification number: C07C45/86 ,  B01D3/148 ,  B01D3/42 ,  B01J31/185 ,  B01J2231/321 ,  B01J2531/822

Abstract: The present invention refers to a method for reducing heavy end formation and catalyst loss in a continuous hydroformylation process, where an olefin or an olefin mixture is reacted with carbon monoxide and hydrogen in a reactor assembly (1) in the presence of a rhodium complex catalyst, comprising at least one organobisphosphite ligand, in order to produce an aldehyde. Said method comprising the addition of an epoxide to the reaction mixture and the continuous or discontinuous removal of early heavy ends.

公开(公告)号：US12122743B2

公开(公告)日：2024-10-22

申请号：US17624879

申请日：2020-06-16

Applicant: PERSTORP AB

Inventor： Matias Kangas

IPC: C07C45/50 ,  B01J31/18 ,  C07F9/145 ,  C07F15/00

CPC classification number: C07C45/50 ,  B01J31/185 ,  C07F9/145 ,  C07F15/0073 ,  B01J2231/321 ,  B01J2531/822 ,  C07C45/50 ,  C07C47/02

Abstract: The present invention refers to the use of an epoxide in order to reduce the formation of heavy ends in a continuous hydroformylation process, where an olefin or olefin mixture is reacted with carbon monoxide and hydrogen in the presence of a rhodium complex catalyst, comprising at least one organobisphosphite ligand, in order to produce an aldehyde. Said epoxide is added to the reaction mixture in an amount of 0.01-1.5 wt %, reducing the formation of heavy ends by 10-80%.

公开(公告)号：US11981628B2

公开(公告)日：2024-05-14

申请号：US17625892

申请日：2020-06-12

Applicant: PERSTORP AB

Inventor： Matias Kangas ,  Stefan Nilsson

IPC: B01D1/06 ,  B01J31/18 ,  C07C45/50 ,  C07C45/82

CPC classification number: C07C45/82 ,  B01D1/065 ,  B01J31/185 ,  C07C45/50

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.