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公开(公告)号：US20200024217A1
公开(公告)日：2020-01-23
申请号：US16516656
申请日：2019-07-19
发明人： Alisa KAMMAFOO , Attapong THIRASAK , Zhongyi DING
IPC分类号： C07C7/08 , C07C15/073 , B01D3/40 , B01D3/14
摘要： Extractive agent compounds are disclosed, with exemplary compounds having Formula (I): wherein Ra and Rb are independently selected from the group consisting of an oxygen radical, a hydrogen radical, and a hydrocarbyl radical having from about 1 to about 20 carbon atoms, and wherein R2-R6 are independently selected from the group consisting of halo, a hydrogen radical, and a hydrocarbyl radical having from about 1 to about 20 carbon atoms, and further wherein at least two of R2-R6 are halo. Also disclosed are extractive distillation processes, comprising distilling a liquid mixture comprising ethylbenzene, a further C8 aromatic compound, and an extractive agent compound as described herein. The extractive agent contributes to improved separability of ethylbenzene from the further C8 aromatic compound. The separability may be quantified in terms of increasing relative volatility of ethylbenzene to the further C8 aromatic compound or may alternatively be quantified in terms of a competitive factor, D, as described herein.
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公开(公告)号：US10647641B2
公开(公告)日：2020-05-12
申请号：US16516656
申请日：2019-07-19
发明人： Alisa Kammafoo , Attapong Thirasak , Zhongyi Ding
IPC分类号： C07C7/08 , C07C15/073 , B01D3/14 , B01D3/40
摘要： Extractive agent compounds are disclosed, with exemplary compounds having Formula (I): wherein Ra and Rb are independently selected from the group consisting of an oxygen radical, a hydrogen radical, and a hydrocarbyl radical having from about 1 to about 20 carbon atoms, and wherein R2-R6 are independently selected from the group consisting of halo, a hydrogen radical, and a hydrocarbyl radical having from about 1 to about 20 carbon atoms, and further wherein at least two of R2-R6 are halo. Also disclosed are extractive distillation processes, comprising distilling a liquid mixture comprising ethylbenzene, a further C8 aromatic compound, and an extractive agent compound as described herein. The extractive agent contributes to improved separability of ethylbenzene from the further C8 aromatic compound. The separability may be quantified in terms of increasing relative volatility of ethylbenzene to the further C8 aromatic compound or may alternatively be quantified in terms of a competitive factor, D, as described herein.
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公开(公告)号：US20200024216A1
公开(公告)日：2020-01-23
申请号：US16516687
申请日：2019-07-19
发明人： Zhongyi DING , Sachin JOSHI , Weihua JIN
摘要： Para-xylene production processes are disclosed, with such processes being integrated with extractive distillation or other separation to effectively separate, for example to remove and recover, ethylbenzene and other components that co-boil with the isomers of xylene. This allows for xylene isomerization, downstream of the separation of para-xylene from its other isomers, to be operated under milder conditions (e.g., liquid phase, absence of added hydrogen) without the need for ethylbenzene conversion. The associated decreased yields of byproducts such as light gases and non-aromatic hydrocarbons, together with the generation of purified ethylbenzene having value for styrene monomer production, can significantly improve overall process economics.
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4.发明申请公开(公告)号：US20200239388A1
公开(公告)日：2020-07-30
申请号：US16847644
申请日：2020-04-13
发明人： Cole Nelson , Venkata K. Ramanujam
摘要： Apparatuses, systems and methods for separating highly pure unsaturated olefinic hydrocarbon stream with zero cooling water and or steam consumption, with minimum possible capital investment and uncompromised operational ease are disclosed herein from a mixture of hydrocarbon stream consisting of saturated and unsaturated hydrocarbons. Embodiments of the invention are directed to producing a hydrocarbon stream containing polymer, chemical grade ethylene, propylene, butylenes, isoprene, hexane stream which are of value in manufacturing chemicals, polymers, and rubbers. Embodiments of the process provided can be applied to concentrating ethylene, propylene, butylenes, cyclopentadiene, isoprene, 2 methyl butene-2, isopentane, hexene etc.
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