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公开(公告)号：US09932284B2
公开(公告)日：2018-04-03
申请号：US14892436
申请日：2014-05-28
Applicant: SHELL OIL COMPANY
Inventor： Kai Jürgen Fischer , Wouter Koot , Sipke Hidde Wadman , Jean Paul Andre Marie Joseph Gishlain Lange
IPC: C07C29/86 , C07D307/08 , C07D307/33
CPC classification number: C07C29/86 , C07D307/08 , C07D307/33 , C07C31/207 , C07C31/12
Abstract: The present invention provides a process for the recovery of 1,4-butanediol and at least one co-product selected from γ-butyrolactone, n-butanol and tetrahydrofuran from an aqueous stream, said process comprising the steps of providing the aqueous stream, providing a first solvent stream, combining said aqueous stream with said first solvent stream and recovering at least a portion of the 1,4-butanediol and at least a portion of at least one of the co-products by liquid-liquid extraction.
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公开(公告)号：US11384039B2
公开(公告)日：2022-07-12
申请号：US16303196
申请日：2017-05-19
Applicant: SHELL OIL COMPANY
Inventor： Kai Jürgen Fischer , Carmelo Perez Golf , Pieter Huizenga
Abstract: The invention provides a process for the separation of a first C3 to C7 diol from a first mixture of C3 to C7 diols. The first mixture is provided to a first distillation column. An extractant is fed to the first distillation column above the first mixture. A stream comprising the first diol and the extractant is removed as a bottoms stream from the first distillation column and subjected to distillation in a second distillation column. A high purity first diol stream is removed from the top section of the second distillation column, while a used extractant stream is removed from the bottom section. The extractant is a C3 to C6 sugar alcohol or mixture thereof. The first diol is a close-boiler to and/or forms an azeotrope with one or more of the other C3 to C7 diols present in the first mixture.
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公开(公告)号：US11203561B2
公开(公告)日：2021-12-21
申请号：US16970449
申请日：2019-02-19
Applicant: SHELL OIL COMPANY
Inventor： Pieter Huizenga , Kai Jürgen Fischer
Abstract: A method for separating monoethylene glycol (MEG) from one or more oxygenates. The method includes providing a stream comprising MEG and one or more oxygenates to a distillation column, providing a water feed stream to a bottom of the distillation column, and removing a recovery stream comprising MEG from the distillation column. The distillation column is operated at higher temperatures than the thermal stability of MEG and the one or more oxygenates.
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公开(公告)号：US10099980B2
公开(公告)日：2018-10-16
申请号：US14893608
申请日：2014-05-28
Applicant: SHELL OIL COMPANY
Inventor： Kai Jürgen Fischer , Wouter Koot
Abstract: A method of recovering an alcohol from an aqueous stream comprising: providing an aqueous stream comprising water and an alcohol; providing a solvent stream; combining the aqueous stream and the solvent stream; and recovering at least a portion of the alcohol by liquid-liquid extraction.
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公开(公告)号：US09718752B2
公开(公告)日：2017-08-01
申请号：US14893273
申请日：2014-05-28
Applicant: SHELL OIL COMPANY
Inventor： Kai Jürgen Fischer , Wouter Koot , Arlette Wesenhagen , Roel Guillaume Hubertus Leonardus Bastings
Abstract: The invention provides a process for the recovery of an alkylene glycol from an aqueous stream comprising the alkylene glycol and the corresponding dialkylene glycol, said process comprising the steps of providing the aqueous stream comprising the alkylene glycol and the corresponding dialkylene glycol, providing a first solvent stream, combining said aqueous stream comprising the alkylene glycol and the corresponding dialkylene glycol with said first solvent stream and recovering at least a portion of the alkylene glycol by liquid-liquid extraction, wherein said solvent comprises an amine.
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Patent Agency Ranking
公开(公告)号：US11891574B2
公开(公告)日：2024-02-06
申请号：US17441380
申请日：2020-04-14
Applicant: SHELL OIL COMPANY
Inventor： Jean-Paul Andre Marie Joseph Ghislain Lange , Luis Alberto Grau Lisnier , Willem Derks , Kai Jürgen Fischer
CPC classification number: C10G1/002 , C10G21/006 , C10G21/02 , C10G55/04 , C10G1/10
Abstract: The invention relates to a process for the recovery of aliphatic hydrocarbons from a liquid hydrocarbon feedstock stream, which comprises aliphatic hydrocarbons and additionally comprises aromatic hydrocarbons and/or polar components, said process comprising the steps of: feeding the liquid hydrocarbon feedstock stream to a first column; feeding a first solvent stream which comprises an organic solvent to the first column at a position which is higher than the position at which the liquid hydrocarbon feedstock stream is fed; contacting at least a portion of the liquid hydrocarbon feedstock stream with at least a portion of the first solvent stream; and recovering at least a portion of the aliphatic hydrocarbons by liquid-liquid extraction of aromatic hydrocarbons and/or polar components with organic solvent, resulting in a stream comprising recovered aliphatic hydrocarbons and optionally organic solvent and a bottom stream from the first column comprising organic solvent and aromatic hydrocarbons and/or polar components.
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公开(公告)号：US10081584B2
公开(公告)日：2018-09-25
申请号：US15536270
申请日：2015-12-16
Applicant: SHELL OIL COMPANY
Inventor： Kai Jürgen Fischer , Waldo Eugene De Villiers , Pieter Huizenga , Carmelo Perez Golf
CPC classification number: C07C29/82 , C07C29/132 , C07C29/76 , C07C31/202 , C07C31/205 , C07C31/207
Abstract: The invention provides a process for the separation of MEG from a glycol stream comprising MEG and 1,2-BDO, said process comprising the steps of: (a) providing the glycol stream and an azeotrope-forming agent to a distillation column, (b) subjecting the glycol stream and the azeotrope-forming agent to distillation at a distillation temperature and a distillation pressure; (c) obtaining a first overhead stream comprising an azeotrope of MEG and the azeotrope-forming agent and a first bottoms stream comprising 1,2-BDO; and (d) subjecting the first overhead stream to phase separation in the presence of water to obtain an MEG-rich aqueous stream and an azeotrope-forming agent rich stream, wherein the azeotrope-forming agent is an organic solvent that forms a homogeneous azeotrope with MEG and does not form an azeotrope with 1,2-BDO at the distillation temperature and pressure.
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公开(公告)号：US10035744B2
公开(公告)日：2018-07-31
申请号：US15524276
申请日：2015-11-04
Applicant: SHELL OIL COMPANY
Inventor： Pieter Huizenga , Kai Jürgen Fischer , Waldo Eugene De Villiers , Karin Bus , Dorien Veldhuizen
CPC classification number: C07C29/86 , B01D11/0426 , B01D11/0492 , B01D2011/002 , C07C31/202 , C07C31/207
Abstract: The invention provides a process for the separation of MEG and 1,2-BDO from a first mixture comprising MEG and 1,2-BDO in a first solvent by the steps of: (i) combining said first mixture with a second solvent stream comprising a second solvent in a first extraction column; (ii) recovering (a) a second mixture of MEG and 1,2-BDO in the second solvent, wherein the molar ratio of MEG:1,2-BDO is lower in the second mixture than in the first mixture; and (b) a solution comprising MEG in the first solvent; (iii) combining said second mixture with a first washing stream, said first washing stream also comprising the first solvent in a second extraction column; (iv) recovering (c) a first extract stream comprising the second solvent and 1,2-BDO and (d) a third mixture comprising MEG and, optionally, 1,2-BDO in the first solvent.
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公开(公告)号：US12110269B2
公开(公告)日：2024-10-08
申请号：US17311826
申请日：2019-12-16
Applicant: SHELL OIL COMPANY
Inventor： Kai Jürgen Fischer , Evert Van Der Heide
IPC: C07C68/065 , C07C29/48 , C07C68/08
CPC classification number: C07C68/065 , C07C68/08
Abstract: The invention relates to a process wherein a dialkyl carbonate stream containing an ether alkanol impurity is subjected to extractive distillation using an extraction solvent to obtain a top stream comprising dialkyl carbonate and a bottom stream comprising the extraction solvent and the ether alkanol impurity, wherein the extraction solvent is an organic compound containing one or more hydroxyl groups and one or more ester moieties and/or ether moieties. Further, the invention relates to a process for making a diaryl carbonate, comprising reacting an aryl alcohol with a stream containing a dialkyl carbonate from which stream an ether alkanol impurity has been removed in accordance with the above-described process.
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公开(公告)号：US12098125B2
公开(公告)日：2024-09-24
申请号：US17642438
申请日：2020-09-28
Applicant: SHELL OIL COMPANY
Inventor： Evert Van Der Heide , Kai Jürgen Fischer
IPC: C07C68/065 , C07C29/48
CPC classification number: C07C68/065 , C07C29/48
Abstract: The invention relates to a process wherein a dialkyl carbonate stream containing an ether alkanol impurity is subjected to extractive distillation using an extraction solvent to obtain a top stream comprising dialkyl carbonate and a bottom stream comprising the ether alkanol impurity and the extraction solvent, wherein the extraction solvent is an organic compound containing one or more ester moieties and/or ether moieties which organic compound does not contain a hydroxyl group. Further, the invention relates to a process for making a diaryl carbonate, comprising reacting an aryl alcohol with a stream containing a dialkyl carbonate from which stream an ether alkanol impurity has been removed in accordance with the above-described process.
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