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公开(公告)号：US20240208892A1
公开(公告)日：2024-06-27
申请号：US18287503
申请日：2022-04-11
Applicant: BASF SE
Inventor： Edward RICHMOND , Wolf-Steffen WEISSKER , Rocco PACIELLO
CPC classification number: C07C51/48 , B01D11/0492 , C07C51/15
Abstract: A method for separating a salt S, wherein the salt S is present dispersed in an aprotic polar liquid A, the liquid A containing the dispersed salt S is extracted with a non-polar liquid B, wherein the salt S is dispersed in the liquid B, and the liquid B containing the dispersed salt S is extracted with water, wherein the solid is dissolved in water.
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公开(公告)号：US20240018078A1
公开(公告)日：2024-01-18
申请号：US18039504
申请日：2021-12-01
Applicant: BASF SE
Inventor： Wolf-Steffen WEISSKER , Edward RICHMOND
CPC classification number: C07C31/30 , C07C29/705 , B01D3/009 , B01D3/4277
Abstract: A method for controlling a reactive distillation column for effecting a transalcoholisation reaction, comprising feeding a metal methoxide into the reactive distillation column via a side feed; feeding a reactant alcohol into a lower part of the reactive distillation column; withdrawing methanol from the top of the reactive distillation column; and withdrawing a solution of a product metal alkoxide in the reactant alcohol from the bottom of the reactive distillation column; wherein the method comprises a process control scheme selected from: Scheme A: establishing a signal S1 which is responsive to a temperature in the rectifying section disposed above the feed of the metal methoxide; and manipulating in response to the signal S1 the feed amount of the reactant alcohol; Scheme B: establishing a signal S1 which is responsive to a temperature in the rectifying section disposed above the feed of the metal methoxide; and manipulating in response to the signal S1 the heat supplied to the bottom of the reactive distillation column. The invention also relates to a method for controlling a reactive distillation column for effecting a transalcoholisation reaction, comprising feeding a metal methoxide into the reactive distillation column via a side feed; feeding a reactant alcohol into a lower part of the reactive distillation column; causing an auxiliary alcohol to be present in the reactive distillation column; and optionally replenishing the auxiliary alcohol via a side feed located above the feed of the reactant alcohol and below the top of the column; withdrawing methanol from the top of the reactive distillation column; and withdrawing a solution of a product metal alkoxide in the reactant alcohol from the bottom of the reactive distillation column; wherein the method comprises a process control scheme selected from: Scheme C: establishing a signal S2 which is responsive to a temperature at a point located between the feed of the metal methoxide and the bottom of the reactive distillation column; and manipulating in response to the signal S2 the feed amount of the reactant alcohol; Scheme D: establishing a signal S2 which is responsive to a temperature at a point located between the feed of the metal methoxide and the bottom of the reactive distillation column; and manipulating in response to the signal S2 the heat supplied to the bottom of the reactive distillation column. The methods of the invention allow for improved controlling of a reactive distillation column for effecting a transalcoholisation reaction.
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公开(公告)号：US20230174447A1
公开(公告)日：2023-06-08
申请号：US17916063
申请日：2021-03-24
Applicant: BASF SE
Inventor： Rainer PAPP , Frank HUETTEN , Dirk JUNGMANN , Edward RICHMOND
CPC classification number: C07C45/505 , B01J19/0006 , B01J23/75 , B01J2219/00164
Abstract: Process for hydroformylation of olefins having 6 to 20 carbon atoms in the presence of a cobalt catalyst in the presence of an aqueous phase with thorough mixing in a reactor wherein a hydroformylation products-containing first stream is withdrawn at the top of the reactor and an aqueous phase-containing second stream is withdrawn from the bottom of the reactor via at least one line leading out of the bottom of the reactor, which process comprises controlling one or more mass flow parameters of the second stream in accordance with the density of the second stream.
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公开(公告)号：US20240002319A1
公开(公告)日：2024-01-04
申请号：US18039503
申请日：2021-12-01
Applicant: BASF SE
Inventor： Wolf-Steffen WEISSKER , Edward RICHMOND
CPC classification number: C07C29/705 , C07C29/80
Abstract: A process for preparing metal alkoxides by transalcoholisation, comprising: feeding a lower metal alkoxide and a higher alcohol into a reactive distillation column; removing a solution of a higher metal alkoxide in the higher alcohol from the bottom of the column or from a recycle stream taken from the bottom of the column; and removing a gaseous lower alcohol from the top of the column, at least partially condensing the gaseous lower alcohol, and recirculating a part of the condensate to the top of the column; wherein an auxiliary alcohol is provided in the reactive distillation column, the boiling point of the auxiliary alcohol being between the boiling point of the lower alcohol and the boiling point of the higher alcohol at the pressure prevailing in the reactive distillation column. The process allows for high conversion of a lower metal alkoxide to a higher metal alkoxide while limiting the formation of solid deposits in the column, while having low energy requirements.
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