公开(公告)号：US12180141B2

公开(公告)日：2024-12-31

申请号：US17659086

申请日：2022-04-13

Applicant: Evonik Operations GmbH

Inventor： Dirk Roettger ,  Sebastian Reimann ,  Niklas Paul ,  Armin Matthias Rix ,  Moritz Schröder ,  Philip Zitzewitz

IPC: C07C29/70

Abstract: A process produces sodium and/or potassium alkoxides in countercurrent by reactive rectification. Alcohol is reacted in countercurrent with the respective alkali metal hydroxide. The vapours containing alcohol and water are separated in at least two serially arranged rectification columns. The energy of the vapour obtained in the second rectification is utilized for operating the first rectification. This specific energy integration coupled with establishing a certain pressure difference in the two rectification stages makes it possible to cover a particularly large proportion of the energy required for the rectification through heating steam and minimizes the use of electricity.

公开(公告)号：US20230391689A1

公开(公告)日：2023-12-07

申请号：US18260071

申请日：2022-01-21

Applicant: Evonik Operations GmbH

Inventor： Philip Lutze ,  Stephan Peitz ,  Armin Matthias Rix ,  Tanita Valèrie Six ,  Moritz Schröder ,  Niklas Paul

IPC: C07C7/08 ,  C07C7/11

CPC classification number: C07C7/08 ,  C07C7/11

Abstract: A method for separating butenes from C4 hydrocarbon streams containing butanes and butenes involves extractive distillation with a suitable solvent, and a subsequent adiabatic oligomerisation. The method also involves heat integration, which makes it possible to use the heat of the solvent in order to heat and/or at least partly evaporate various streams.

公开(公告)号：US20210053892A1

公开(公告)日：2021-02-25

申请号：US16991436

申请日：2020-08-12

Applicant: Evonik Operations GmbH

Inventor： Stephan Peitz ,  Guido Stochniol ,  Armin Matthias Rix ,  Niklas Paul ,  Tatina Valèrie Six

IPC: C07C7/04 ,  C07C2/10 ,  B01J23/78 ,  B01D3/00 ,  B01D3/14

Abstract: The present invention relates to a process for oligomerization of C2- to C8-olefins in at least two reaction stages, wherein in the last distillation column the reaction mixture is fractionated such that only very small amounts of the reactant olefins and the analogous alkanes remain in the bottom of the distillation column.

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.

公开(公告)号：US20220411352A1

公开(公告)日：2022-12-29

申请号：US17808250

申请日：2022-06-22

Applicant: Evonik Operations GmbH

Inventor： Philip Lutze ,  Stephan Peitz ,  Armin Matthias Rix ,  Tanita Valèrie Six ,  Moritz Schröder ,  Niklas Paul

IPC: C07C7/08 ,  B01D3/14 ,  B01D3/40 ,  B01D3/00

Abstract: An extractive distillation column system contains a combination column and a side rectification column. A process can be used for separation of butenes from C4-hydrocarbon streams using the extractive distillation column system.

公开(公告)号：US11254631B2

公开(公告)日：2022-02-22

申请号：US16991327

申请日：2020-08-12

Applicant: Evonik Operations GmbH

Inventor： Stephan Peitz ,  Guido Stochniol ,  Armin Matthias Rix ,  Niklas Paul ,  Tatina Valèrie Six

IPC: C07C7/04 ,  B01D3/00 ,  B01D3/14 ,  B01J23/78 ,  C07C2/10

Abstract: The present invention relates to a process for oligomerization of C2- to C8-olefins in at least two reaction stages, wherein in the last distillation column the reaction mixture is fractionated such that only very small amounts of the oligomers formed remain in the distillate.

公开(公告)号：US20210053891A1

公开(公告)日：2021-02-25

申请号：US16991327

申请日：2020-08-12

Applicant: Evonik Operations GmbH

Inventor： Stephan Peitz ,  Guido Stochniol ,  Armin Matthias Rix ,  Niklas Paul ,  Tatina Valèrie Six

IPC: C07C7/04 ,  C07C2/10 ,  B01J23/78 ,  B01D3/00 ,  B01D3/14

Abstract: The present invention relates to a process for oligomerization of C2- to C8-olefins in at least two reaction stages, wherein in the last distillation column the reaction mixture is fractionated such that only very small amounts of the oligomers formed remain in the distillate.

公开(公告)号：US20200216763A1

公开(公告)日：2020-07-09

申请号：US16722127

申请日：2019-12-20

Applicant: Evonik Operations GmbH

Inventor： Stephan Peitz ,  Helene Reeker ,  Reiner Bukohl ,  Thomas Quandt ,  Stefan Röder ,  Armin Matthias Rix ,  Andreas Wolff ,  Guido Stochniol

IPC: C10G29/04 ,  B01J23/44 ,  B01J35/10 ,  C10G55/06 ,  C07C319/18

Abstract: The invention relates to a catalyst for a process for removing mercaptans and optionally disulfides (if present) from hydrocarbon streams, in particular C4 streams, in the presence of higher dienes, in particular C5 dienes. At the same time, the invention also relates to a process for removing mercaptans and disulfides (if present) from hydrocarbon streams, in particular C4 streams, in one embodiment in the presence of 1-butene, by thioetherification of the mercaptans with polyunsaturated hydrocarbons, wherein the process is carried out in a reactor with addition of hydrogen in the presence of higher dienes, in particular C5 dienes.

公开(公告)号：US20240059633A1

公开(公告)日：2024-02-22

申请号：US18260069

申请日：2022-01-21

Applicant: Evonik Operations GmbH

Inventor： Philip Lutze ,  Stephan Peitz ,  Armin Matthias Rix ,  Tanita Valèrie Six ,  Moritz Schröder ,  Niklas Paul

IPC: C07C7/11 ,  C07C7/04

CPC classification number: C07C7/11 ,  C07C7/04

Abstract: A process for removing butenes from C4-hydrocarbon streams containing butanes and butenes involves extractive distillation with a suitable solvent. The process also involves heat integration, which allows utilization of the heat of the solvent for heating and/or at least partly evaporating various streams.

公开(公告)号：US20240059632A1

公开(公告)日：2024-02-22

申请号：US18260102

申请日：2022-01-21

Applicant: Evonik Operations GmbH

Inventor： Tanita Valèrie SIX ,  Armin Matthias Rix ,  Moritz Schröder ,  Stephan Peitz ,  Niklas Paul ,  Philip Lutze ,  Andreas Oldenkott ,  Franz-Josef Stock ,  Marius Tiesbohnenkamp

IPC: C07C7/08 ,  C07C11/08

CPC classification number: C07C7/08 ,  C07C11/08

Abstract: A process for removing butenes from C4-hydrocarbon streams containing butanes and butenes involves extractive distillation with a suitable solvent. The process also involves heat integration, which allows utilization of the heat of the solvent for heating and/or at least partly evaporating various streams.