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公开(公告)号：US10435340B2
公开(公告)日：2019-10-08
申请号：US15505590
申请日：2014-09-05
发明人： Attapong Thirasak , Alisa Kammafoo , Wiroon Tanthapanichakoon , Zhongyi Ding , Sachin Joshi , Cole Nelson , Arnat Prombunglum
摘要： A process for the distillative separation of ethylbenzene from a mixture comprising ethylbenzene and at least one other C8 aromatic compound, comprising introducing a feed stream comprising said mixture into a first distillation column, introducing a first stream comprising a heavy solvent above the feed stream into the first distillation column, introducing an aqueous stream below the feed stream into the first distillation column.
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公开(公告)号：US10427994B2
公开(公告)日：2019-10-01
申请号：US15505593
申请日：2014-09-05
发明人： Attapong Thirasak , Alisa Kammafoo , Wiroon Tanthapanichakoon , Zhongyi Ding , Sachin Joshi , Arnat Prombunglum , Worawut Tamthaisong , Purachet Pitipuech
摘要： Process for the distillative separation of ethylbenzene from a mixture comprising ethylbenzene and at least one other C8 aromatic compound, comprising distilling said mixture in a distillation column in the presence of an extractive solvent, characterized in that the distillation column is operated at a sub-atmospheric pressure.
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公开(公告)号：US10975006B2
公开(公告)日：2021-04-13
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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公开(公告)号：US10035079B2
公开(公告)日：2018-07-31
申请号：US13830245
申请日：2013-03-14
发明人： Manish Bhargava , Ashraf Lakha , Sachin Joshi , TingTing Kok
IPC分类号： B01D3/00
CPC分类号： B01D3/007
摘要： The claimed invention relates to a method for reducing energy consumption in a distillation process by using thermal coupling. Embodiments of the claimed invention are directed to the inclusion of a side reboiler and a partial condenser in the prefractionation section of a first column, which in turn helps to uniformly distribute the vapor liquid traffic between a first column and a second column.
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公开(公告)号：US20140224637A1
公开(公告)日：2014-08-14
申请号：US13830245
申请日：2013-03-14
发明人： Manish Bhargava , Ashraf Lakha , Sachin Joshi , TingTing Kok
IPC分类号： B01D3/00
CPC分类号： B01D3/007
摘要： The claimed invention relates to a method for reducing energy consumption in a distillation process by using thermal coupling. Embodiments of the claimed invention are directed to the inclusion of a side reboiler and a partial condenser in the prefractionation section of a first column, which in turn helps to uniformly distribute the vapor liquid traffic between a first column and a second column.
摘要翻译： 所要求保护的发明涉及通过使用热耦合来减少蒸馏过程中的能量消耗的方法。 要求保护的发明的实施方案涉及在第一塔的初步分馏部分中包括侧面再沸器和部分冷凝器，这又有助于在第一塔和第二塔之间均匀分布蒸汽流体流动。
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