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公开(公告)号：US10758838B2
公开(公告)日：2020-09-01
申请号：US15553761
申请日：2016-02-23
摘要： A process of purifying acetic acid is provided. The process includes feeding a stream of acetic acid into a distillation column and distilling acetic acid in the presence of an oxidizing agent in the distillation column, to oxidize oxidizable impurities in the acetic acid, wherein the oxidizing agent is an oxidant capable of cleaving C═C bonds. The process further includes removing a distilled acetic acid stream from the distillation column. Further processes for purifying acetic acid and systems for purifying acetic acid are also provided.
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公开(公告)号：US20200222827A1
公开(公告)日：2020-07-16
申请号：US16829458
申请日：2020-03-25
IPC分类号： B01D3/00 , B01D5/00 , C07C51/487 , C07C53/08
摘要： A process of purifying acetic acid is provided. The process includes feeding a feed stream comprising acetic acid into a bottom half of a distillation column and distilling the acetic acid in the presence of a homogeneous oxidizing agent in the distillation column, to oxidize oxidizable impurities in the acetic acid, wherein the homogeneous oxidizing agent is capable of cleaving C═C bonds. The process further includes removing a distilled acetic acid stream from the distillation column. Further processes for purifying acetic acid and systems for purifying acetic acid are also provided.
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公开(公告)号：US11331655B2
公开(公告)日：2022-05-17
申请号：US16474101
申请日：2017-12-21
发明人： Abdullah Saad Al-Dughaither , Shahid Azam , Abdulmajeed Mohammed Al-Hamdan , Dafer Mubarak Alshahrani , Sebastiano Licciulli , Anina Wohl , Wolfgang Muller , Heinz Bolt , Andreas Meiswinkel , Tobias Meier , Ralf Noack
IPC分类号： B01J31/18 , B01J31/14 , C07C2/26 , B01J37/24 , B01J37/22 , C08F4/78 , C07C11/08 , C07C11/107 , B01J31/16
摘要： A method for preparing a homogenous catalyst for the production of linear alpha olefins includes: preparing a first pre-catalyst solution comprising a modifier and an organoaluminum compound in a first solvent wherein the first pre-catalyst solution is reacted and stored in a first vessel for a period of time of 1 hour to 90 days; preparing a second pre-catalyst solution comprising a second solvent, a ligand, and a chromium containing compound, wherein the second pre-catalyst solution is stored in a second vessel for a period of time of 1 hour to 90 days; and after a period of time, adding the first pre-catalyst solution to a catalyst pre-formation unit; after the same period of time, adding the second pre-catalyst solution to the catalyst pre-formation unit; forming a homogenous catalyst by mixing the first pre-catalyst solution and the second pre-catalyst solution; adding the homogeneous catalyst to a reaction vessel, wherein the reaction vessel comprises an alpha olefin; and forming the linear alpha olefin by mixing the homogeneous catalyst and the homogenous catalyst.
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公开(公告)号：US11285469B2
公开(公告)日：2022-03-29
申请号：US16473674
申请日：2017-12-28
发明人： Abdullah Saad Al-Dughaither , Shahid Azam , Abdulmajeed Mohammed Al-Hamdan , Dafer Mubarak Alshahrani , Sebastiano Licciulli , Andreas Meiswinkel , Heinz Bolt , Wolfgang Muller , Anina Wohl
IPC分类号： B01J37/04 , B01J31/02 , B01J31/14 , C07C11/107
摘要： A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin includes: preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel; preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel; and simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent.
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公开(公告)号：US20240067588A1
公开(公告)日：2024-02-29
申请号：US18259962
申请日：2021-12-20
发明人： Shahid Azam , Abdulmajeed Mohammed Al-Hamdan , Mohammed Fahad Al-Anazi , Bander Bawareth , Ashim Kumar Ghosh , Debashis Chakraborty , Somak Paul , Rajan V. Deshmukh , Ahmed Hussain Eissa , Omar A. Marghalani , Sebastiano Licciulli
CPC分类号： C07C5/222 , C07C7/005 , C07C2529/40
摘要： A method for purifying 1-hexene is disclosed. The method can include contacting a first stream containing 1-hexene and 2-ethyl-1-butene with an isomerization catalyst containing an comprising an alumina, silica-alumina, a zeolite, or an ion exchange resin, or any combinations thereof, under conditions sufficient to selectively isomerize at least a portion of 2-ethyl-1-butene into 3-methyl-2-pentene and form a second stream containing 1-hexene and 3-methyl-2-pentene, and separating the second stream into a third stream containing 1-hexene and a fourth stream containing 3-methyl-2-pentene.
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公开(公告)号：US20190351403A1
公开(公告)日：2019-11-21
申请号：US16473674
申请日：2017-12-28
发明人： Abdullah Saad Al-Dughaither , Shahid Azam , Abdulmajeed Mohammed Al-Hamdan , Dafer Mubarak Alshahrani , Sebastiano Licciulli , Andreas Meiswinkel , Heinz Bolt , Wolfgang Muller , Anina Wohl
IPC分类号： B01J37/04 , B01J31/02 , B01J31/14 , C07C11/107
摘要： A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin includes: preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel; preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel; and simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent.
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公开(公告)号：US20190314798A1
公开(公告)日：2019-10-17
申请号：US16474101
申请日：2017-12-21
发明人： Abdullah Saad Al-Dughaither , Shahid Azam , Abdulmajeed Mohammed Al-Hamdan , Dafer Mubarak Alshahrani , Sebastiano Licciulli , Anina Wohl , Wolfgang Muller , Heinz Bolt , Andreas Meiswinkel , Tobias Meier , Ralf Noack
摘要： A method for preparing a homogenous catalyst for the production of linear alpha olefins includes: preparing a first pre-catalyst solution comprising a modifier and an organoaluminum compound in a first solvent wherein the first pre-catalyst solution is reacted and stored in a first vessel for a period of time of 1 hour to 90 days; preparing a second pre-catalyst solution comprising a second solvent, a ligand, and a chromium containing compound, wherein the second pre-catalyst solution is stored in a second vessel for a period of time of 1 hour to 90 days; and after a period of time, adding the first pre-catalyst solution to a catalyst pre-formation unit; after the same period of time, adding the second pre-catalyst solution to the catalyst pre-formation unit; forming a homogenous catalyst by mixing the first pre-catalyst solution and the second pre-catalyst solution; adding the homogeneous catalyst to a reaction vessel, wherein the reaction vessel comprises an alpha olefin; and forming the linear alpha olefin by mixing the homogeneous catalyst and the homogenous catalyst.
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公开(公告)号：US20180021692A1
公开(公告)日：2018-01-25
申请号：US15553761
申请日：2016-02-23
IPC分类号： B01D3/00 , C07C51/487 , C07C53/08 , B01D5/00
摘要： A process of purifying acetic acid is provided. The process includes feeding a stream of acetic acid into a distillation column and distilling acetic acid in the presence of an oxidizing agent in the distillation column, to oxidize oxidizable impurities in the acetic acid, wherein the oxidizing agent is an oxidant capable of cleaving C═C bonds. The process further includes removing a distilled acetic acid stream from the distillation column. Further processes for purifying acetic acid and systems for purifying acetic acid are also provided.
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