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公开(公告)号：US11773041B2
公开(公告)日：2023-10-03
申请号：US18055989
申请日：2022-11-16
Applicant: Evonik Operations GmbH
Inventor： Frank Geilen , Alexander Brächer , Stefan Drees , Benedikt Dereks , Robert Franke , Ana Markovic , Armin Matthias Rix , Martin Oldemeyer , Dirk Fridag
IPC: C07C45/50
CPC classification number: C07C45/505 , C07C2523/46
Abstract: A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.
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公开(公告)号：US20220193611A1
公开(公告)日：2022-06-23
申请号：US17549709
申请日：2021-12-13
Applicant: Evonik Operations GmbH
Inventor： Frederik Gluth , Marc Schäpertöns , Thomas Quell , Frank Geilen , Stefan Drees , Fabian Höckelmann , Robert Franke
Abstract: The invention provides an improvement in terms of control and process technology for a method of continuous removal of a component from a liquid mixture using a membrane unit comprising at least one membrane stage. The improvement is that a portion of the overall permeate stream is recycled to the feed vessel and/or beyond the feed vessel but upstream of the conveying device, and the remainder of the overall permeate stream is removed, with the recycled permeate having a higher concentration of the component to be separated off than the removed permeate. The presently disclosed method can especially be used for separation of a homogeneously dissolved catalyst from a liquid reaction mixture.
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公开(公告)号：US11820739B2
公开(公告)日：2023-11-21
申请号：US18055442
申请日：2022-11-15
Applicant: Evonik Operations GmbH
Inventor： Ana Markovic , Frank Geilen , Alexander Brächer , Benedikt Dercks , Stefan Drees , Tonia Weber , Robert Franke , Dirk Fridag
CPC classification number: C07C45/50 , B01J23/464 , B01J27/14 , C07C45/62
Abstract: A process for preparing aldehydes by a homogeneously catalysed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream.
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公开(公告)号：US20230159425A1
公开(公告)日：2023-05-25
申请号：US18055989
申请日：2022-11-16
Applicant: Evonik Operations GmbH
Inventor： Frank Geilen , Alexander Brächer , Stefan Drees , Benedikt Dercks , Robert Franke , Ana Markovic , Armin Matthias Rix , Martin Oldemeyer , Dirk Fridag
IPC: C07C45/50
CPC classification number: C07C45/505 , C07C2523/46
Abstract: A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.
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Patent Agency Ranking
公开(公告)号：US11174207B2
公开(公告)日：2021-11-16
申请号：US16949691
申请日：2020-11-11
Applicant: Evonik Operations GmbH
Inventor： Frank Geilen , Felix Gärtner , Horst-Werner Zanthoff , Guido Stochniol
Abstract: A process is useful for the isomerization of C4 to C9 olefins having an internal double bond into the corresponding olefins having a terminal double bond using a heterogeneous catalyst system of a silicon-aluminium mixed oxide composition.
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公开(公告)号：US20210147320A1
公开(公告)日：2021-05-20
申请号：US16949691
申请日：2020-11-11
Applicant: Evonik Operations GmbH
Inventor： Frank Geilen , Felix Gärtner , Horst-Werner Zanthoff , Guido Stochniol
Abstract: A process is useful for the isomerization of C4 to C9 olefins having an internal double bond into the corresponding olefins having a terminal double bond using a heterogeneous catalyst system of a silicon-aluminium mixed oxide composition.
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公开(公告)号：US10589249B2
公开(公告)日：2020-03-17
申请号：US16388518
申请日：2019-04-18
Applicant: Evonik Operations GmbH
Inventor： Jan Willaert , Martina Ludwig , Frank Geilen , Johannes Knossalla , Thomas Quell , Robert Franke
Abstract: A heat exchanger system can be used for removal or introduction of heat from or into a chemical reactor in which a chemical reaction is proceeding. The system further provides an apparatus for controlling the temperature of a reactor and a process for performing a chemical reaction, in each case using a heat exchanger system with a thermally insulated inner tube.
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公开(公告)号：US11806669B2
公开(公告)日：2023-11-07
申请号：US17549709
申请日：2021-12-13
Applicant: Evonik Operations GmbH
Inventor： Frederik Gluth , Marc Schäpertöns , Thomas Quell , Frank Geilen , Stefan Drees , Fabian Höckelmann , Robert Franke
CPC classification number: B01D61/12 , B01D61/027 , B01D2311/14 , B01D2311/16 , B01D2311/25 , B01D2311/263 , B01D2311/2696 , B01D2315/10 , B01D2317/022
Abstract: The invention provides an improvement in terms of control and process technology for a method of continuous removal of a component from a liquid mixture using a membrane unit comprising at least one membrane stage. The improvement is that a portion of the overall permeate stream is recycled to the feed vessel and/or beyond the feed vessel but upstream of the conveying device, and the remainder of the overall permeate stream is removed, with the recycled permeate having a higher concentration of the component to be separated off than the removed permeate. The presently disclosed method can especially be used for separation of a homogeneously dissolved catalyst from a liquid reaction mixture.
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公开(公告)号：US20230159423A1
公开(公告)日：2023-05-25
申请号：US18055442
申请日：2022-11-15
Applicant: Evonik Operations GmbH
Inventor： Ana MARKOVIC , Frank Geilen , Alexander Brächer , Benedikt Dercks , Stefan Drees , Tonia Weber , Robert Franke , Dirk Fridag
CPC classification number: C07C45/50 , B01J23/464 , B01J27/14 , C07C45/62
Abstract: A process for preparing aldehydes by a homogeneously catalysed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream.
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