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公开(公告)号：US11613717B2
公开(公告)日：2023-03-28
申请号：US16633311
申请日：2018-07-27
发明人： Guillermo Leal , Kareemuddin Mahaboob Shaik , Mohammed Bismillah Ansari , Hiren Shethna , Zhonglin Zhang
摘要： A method of producing a fuel additive includes passing a feed stream comprising C4 hydrocarbons through a methyl tertiary butyl ether unit producing a first process stream; passing the first process stream through a selective hydrogenation unit producing a second process stream; passing the second process stream through an isomerization unit producing a third process stream; and passing the third process stream through a hydration unit producing the fuel additive and a recycle stream.
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公开(公告)号：US11505516B2
公开(公告)日：2022-11-22
申请号：US16631633
申请日：2018-07-17
摘要： Systems and methods for producing propylene using an MTBE synthesis raffinate are disclosed. An MTBE synthesis raffinate stream first passes through a molecular sieve to separate n-butane and isobutane from the rest of C4 hydrocarbons of the MTBE synthesis raffinate. The 1-butene in the rest of C4 hydrocarbons of the MTBE synthesis raffinate is then isomerized to form 2-butene. Therefore, the concentration of 2-butene in the subsequent propylene production process increases due to the separation of n-butane and isobutane and the isomerization of 1-butene, resulting in an improved reaction rate and reaction efficiency for propylene production.
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公开(公告)号：US20220185750A1
公开(公告)日：2022-06-16
申请号：US17436753
申请日：2020-03-05
发明人： Guillermo Leal , Naif Mohammed Al-Naddah Al-Otaibi , Kareemuddin Mahaboob Shaik , Mohammed Bismillah Ansari , Vijay Dinkar Bodas
摘要： A method of producing a fuel additive includes passing a feed stream comprising C4 hydrocarbons through a first hydrogenation unit producing a first process stream; passing the first process stream through a distillation unit; withdrawing a 2-butene stream from the distillation unit: passing the 2-butene stream through a second hydrogenation unit producing a 1-butene stream; passing at least a portion of the 1-butene stream through a separation unit; and passing the 1-butene stream through a hydration unit producing the fuel additive.
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公开(公告)号：US20210024843A1
公开(公告)日：2021-01-28
申请号：US16981189
申请日：2019-03-18
发明人： Guillermo Leal , Naif Mohammed Al-Naddah Al-Otaibi , Kareemuddin Mahaboob Shaik , Mohammed Bismillah Ansari , Vijay Dinkar Bodas
摘要： A method of producing a fuel additive includes passing a feed stream comprising C4 hydrocarbons through a hydrogenation unit producing a hydrogenated stream; passing the hydrogenated stream through a distillation unit producing a first stream and a second stream; producing an isobutylene stream by passing the first stream through a molecular sieve unit; passing the isobutylene stream to a hydration unit as a feedstock for the fuel additive; and forming the fuel additive in the hydration unit.
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公开(公告)号：US20210024837A1
公开(公告)日：2021-01-28
申请号：US17042614
申请日：2019-04-11
发明人： Guillermo Leal , Kareemuddin Mahaboob Shaik , Hiren Shethna , Naif Mohammed Al-Naddah Al-Otaibi , Mohammed Bismillah Ansari , Zhonglin Zhang
摘要： A method of producing a fuel additive includes passing a feed stream comprising C4 hydrocarbons through a butadiene extraction unit producing a first process stream; passing the first process stream through a methyl tertiary butyl ether unit producing a second process stream and a methyl tertiary butyl ether product; passing the second process stream through a hydration unit producing the fuel additive and a recycle stream; passing the recycle stream through a hydrogenation unit; and recycling the recycle stream to a steam cracker unit and/or to the feed stream
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公开(公告)号：US11427518B2
公开(公告)日：2022-08-30
申请号：US16981183
申请日：2019-03-18
发明人： Guillermo Leal , Naif Mohammed Al-Naddah Al-Otaibi , Mohammed Bismillah Ansari , Kareemuddin Mahaboob Shaik , Hiren Shethna , Zhonglin Zhang
摘要： A method of producing a fuel additive includes producing a first product stream comprising butadiene by passing a feed stream comprising C4 hydrocarbons through a steam cracker; transforming greater than or equal to 90 weight % of the butadiene in the first product stream into a second product stream by passing the first product stream through a first hydrogenation unit, wherein the second product stream comprises 1-butene, 2-butene, n-butane, isobutylene, isobutane, or a combination thereof; and converting the second product stream into the fuel additive by passing the second product stream through a fuel additive synthesis unit with an acid catalyst.
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公开(公告)号：US11414611B2
公开(公告)日：2022-08-16
申请号：US17052407
申请日：2019-04-18
发明人： Guillermo Leal , Kareemuddin Mahaboob Shaik , Naif Mohammed Al-Naddah Al-Otaibi , Hiren Shethna , Mohammed Bismillah Ansari , Zhonglin Zhang
摘要： A method of producing a fuel additive includes passing a feed stream comprising C4 hydrocarbons through a methyl tertiary butyl ether unit producing a first process stream; passing the first process stream through a selective butadiene hydrogenation unit transforming greater than or equal to 90% by weight of the butadiene to 1-butene and 2-butene, preferably greater than or equal to 93%, preferably, greater than or equal to 94%, more preferably, greater than or equal to 95% producing a second process stream; passing the second process stream through a hydration unit producing a third process stream and the fuel additive; passing the third process stream through a total hydrogenation unit producing a hydrogenated stream; and passing the hydrogenated stream to a cracker unit.
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公开(公告)号：US11358916B2
公开(公告)日：2022-06-14
申请号：US17047001
申请日：2019-04-23
摘要： Described is a process for producing field butane. The process includes increasing the n-butane concentration in field butane. The process may include a concentration process that includes distillation and a thermal cracking process.
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公开(公告)号：US11124470B2
公开(公告)日：2021-09-21
申请号：US16496511
申请日：2018-03-29
摘要： A method of producing methyl tertiary butyl ether (MTBE) and propylene is disclosed. The method involves the use of a crude C4 stream and the integration of a MTBE synthesis process and a cracking process. The method may include processing a byproduct stream from an MTBE synthesis unit to produce high purity olefin streams for an olefins conversion technology unit.
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公开(公告)号：US20210155862A1
公开(公告)日：2021-05-27
申请号：US17045669
申请日：2019-04-18
发明人： Guillermo Leal , Mohammed Bismillah Ansari , Kareemuddin Mahaboob Shaik , Hiren Shethna , Zhonglin Zhang
摘要： A method of producing a fuel additive includes: passing a first process stream comprising C4 hydrocarbons through a methyl tertiary butyl ether synthesis unit producing a first recycle stream; passing the first recycle stream through a hydration unit producing the fuel additive and a second recycle stream; passing the second recycle stream through a recycle hydrogenation unit and a deisobutanizer unit; and recycling the second recycle stream to the methyl tertiary butyl ether synthesis unit.
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