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：US11021417B2

公开(公告)日：2021-06-01

申请号：US16710784

申请日：2019-12-11

Applicant: Evonik Operations GmbH

Inventor： Stephan Peitz ,  Guido Stochniol ,  Reiner Bukohl

IPC: C07C2/10 ,  B01J38/02

Abstract: A process is useful for the oligomerization of short-chain olefins in the presence of a catalyst, wherein the catalyst is kept in a dry atmosphere prior to being used in the process.

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：US10882028B2

公开(公告)日：2021-01-05

申请号：US16293717

申请日：2019-03-06

Applicant: Evonik Operations GmbH

Inventor： Fabian Nadolny ,  Stephan Peitz ,  Guido Stochniol ,  Helene Reeker ,  Wladimir Reschetilowski

IPC: B01J23/78 ,  B01J21/12 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  C07C2/12 ,  B01J23/755 ,  C07C2/10 ,  B01J35/00 ,  B01J23/02

Abstract: The present invention relates to an oligomerization catalyst for oligomerization of low-molecular-weight olefins, to the use of said catalyst and to a process for oligomerization of low-molecular-weight olefins using the oligomerization catalyst according to the invention.

公开(公告)号：US10882027B2

公开(公告)日：2021-01-05

申请号：US16293702

申请日：2019-03-06

Applicant: Evonik Operations GmbH

Inventor： Fabian Nadolny ,  Stephan Peitz ,  Guido Stochniol ,  Robert Franke ,  Thomas Quandt

IPC: B01J23/78 ,  B01J21/12 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  C07C2/10 ,  C07C2/24 ,  C07C2/30 ,  B01J23/755 ,  B01J35/00

Abstract: The invention relates to a process for producing an oligomerization catalyst comprising nickel oxide and a silicon-alumina support material, wherein the silica-alumina support material is in the ammonium form. The present invention further relates to a process for oligomerization of C3- to C6-olefins using the oligomerization catalyst produced according to the invention.

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：US10647630B2

公开(公告)日：2020-05-12

申请号：US15000837

申请日：2016-01-19

Applicant: Evonik Operations GmbH

Inventor： Guido Stochniol ,  Stephan Peitz ,  Dietrich Maschmeyer ,  Helene Reeker ,  Joerg Schallenberg

IPC: C07C2/24 ,  C07C7/04 ,  C07C2/10

Abstract: A process for the combined preparation of at least butene and octene from ethane, proceeds by a) providing an inert solvent having a boiling point or boiling range below the boiling point of butene; b) providing a first feed mixture comprising at least the inert solvent and ethene dissolved therein; c) converting the first feed mixture in a first synthesis; d) in the first synthesis, oligomerizing at least a portion of the ethene present in the first feed mixture in the presence of a first heterogeneous catalyst and in the presence of the inert solvent to obtain a first reaction mixture comprising at least the inert solvent, butene, hexene and octene; e) working-up of the first reaction mixture and/or a substance stream based thereon into a low boiler fraction comprising the inert solvent, at least one C4-fraction comprising butenes, a C6-fraction comprising hexenes, a C8-fraction comprising octenes and into a C8+-fraction comprising hydrocarbons having more than eight carbon atoms; f) using at least a portion of the low boiler fraction for providing the first feed mixture; g) providing a second feed mixture comprising at least hexene and ethene dissolved in the hexene using at least a portion of the C6-fraction; h) converting the second feed mixture in a second synthesis, wherein the second synthesis is spatially separated from the first synthesis; i) in the second synthesis, reacting at least a portion of the ethene present in the second feed mixture with at least a portion of the hexene present in the second feed mixture in the presence of a second heterogeneous catalyst to obtain a second reaction mixture comprising at least octene; and k) joint working-up of the second reaction mixture with the first reaction mixture or with the substance stream based thereon.

公开(公告)号：US20200123080A1

公开(公告)日：2020-04-23

申请号：US16654135

申请日：2019-10-16

Applicant: Evonik Operations GmbH

Inventor： Guido STOCHNIOL ,  Jörg Schallenberg ,  Stephan Peitz

IPC: C07C2/10 ,  C07C7/04 ,  C07C7/00 ,  B01J23/78 ,  B01J21/12

Abstract: A process is used for oligomerizing C2- to C8-olefins in several reaction stages in which the starting mixture and the respective outputs from the reaction stages are separated and are fed to different reaction stages.

公开(公告)号：US20230313054A1

公开(公告)日：2023-10-05

申请号：US18191139

申请日：2023-03-28

Applicant: Evonik Operations GmbH

Inventor： Stephan Peitz ,  Guido Stochniol ,  Armin Matthias Rix ,  Matthias Böse ,  Tanita Valèrie Six ,  Martin Althoff ,  Ralf Boll ,  Helena Lopez-Fernandez

IPC: C10G65/04

CPC classification number: C10G65/04 ,  C10G2300/1037 ,  C10G2300/4081 ,  C10G2400/28

Abstract: A process can be used for purifying a hydrocarbon stream containing at least Cx alkanes, Cx olefins, low boilers such as Cx−1 hydrocarbons, and high boilers such as Cx+1 hydrocarbons, with x=3 or 4. The process involves separating off low boilers and separating off high boilers, wherein the separating-off of high boilers is performed in the presence of hydrogen and hence a hydrogenation of the olefins present takes place.