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公开(公告)号：US20200283356A1
公开(公告)日：2020-09-10
申请号：US16885134
申请日：2020-05-27
申请人： LG CHEM, LTD.
发明人： Jae Ik LEE , Eun Kyo KIM , Mi Kyung KIM , Jeong Seok LEE
摘要： Provided is a device for preparing butadiene. The device includes an oxidative dehydrogenation reaction part, in which oxidative dehydrogenation of reaction raw materials containing butene, oxygen (O2), steam, and a diluent gas is performed to obtain oxidative dehydrogenation reaction products containing butadiene; a cooling separation part for removing water from the reaction products; a condensation separation part for condensing hydrocarbons from the reaction products from which water is removed; an absorption separation part for recovering all hydrocarbons from the reaction products containing hydrocarbons not condensed in the condensation separation part; and a purification part for separating butadiene from crude hydrocarbons condensed in the condensation separation part, wherein n-butane remaining after butadiene is separated in the purification part is fed again into the oxidative dehydrogenation reaction part. The device can provide high-purity butadiene while reducing energy consumption and raw material and production costs, thereby improving economic efficiency of processes.
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公开(公告)号：US10730810B2
公开(公告)日：2020-08-04
申请号：US16472435
申请日：2017-12-22
摘要： A process for producing an olefin having N carbon atoms is proposed in which using a dehydrogenation a process gas is formed which contains at least the olefin having N carbon atoms, a paraffin having N carbon atoms and a hydrocarbon having N−1 carbon atoms and in which using at least a portion of the process gas a separation input is formed which is subjected to a low temperature separation in which the separation input is cooled stepwise over a plurality of temperature levels and condensates are separated from the separation input, wherein the condensates are at least partly subjected to a first low temperature rectification to obtain a first gas fraction and a first liquid fraction, wherein the first gas fraction contains at least the olefin having N carbon atoms in a lower proportion than in the condensates and the hydrocarbon having N−1 in a higher proportion than in the condensates. It is provided that the first gas fraction is at least partly subjected to a second low temperature rectification using a liquid reflux containing predominantly or exclusively the hydrocarbon having N−1 carbon atoms in which the first gas fraction undergoes depletion in the olefin having N carbon atoms. A corresponding plant (100) likewise forms part of the subject matter of the invention.
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公开(公告)号：US10703690B2
公开(公告)日：2020-07-07
申请号：US16073279
申请日：2017-12-18
申请人： LG CHEM, LTD.
发明人： Jae Ik Lee , Eun Kyo Kim , Mi Kyung Kim , Jeong Seok Lee
摘要： The present invention relates to a method of preparing butadiene and a device for preparing the same. According to the present invention, when butadiene is prepared by oxidative dehydrogenation of butene, unlike conventional methods, in which nitrogen is used as a diluent gas and an absorption method is used to separate butadiene from reaction products, butane is used as a diluent gas and a condensation method, in which butadiene is liquefied and separated from reaction products using a low-temperature refrigerant or cooling water, is used. In addition, an absorption method of recovering all hydrocarbons from an upper stream generated in a condensation process is used, so that loss of hydrocarbons is minimized. Therefore, the method and device of the present invention may provide high-purity butadiene while reducing raw material costs, production costs, and energy consumption, thereby improving economic efficiency of processes.
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公开(公告)号：US10675612B2
公开(公告)日：2020-06-09
申请号：US15510170
申请日：2015-09-30
申请人： LG CHEM, LTD.
发明人： Cheolock Song , Gyo Hyun Hwang , Ara Cho , Jungup Bang
IPC分类号： B01J23/881 , B01J35/02 , B01J35/10 , B01J37/02 , B01J37/08 , B01J23/28 , B01J37/04 , C01G49/02 , B01J35/00 , B01J37/00 , C07C5/48
摘要： According to the present invention, a composite including amorphous iron molybdate islands, shows a smaller island size and a uniform distribution of islands compared with a conventional composite including crystalline islands, and thus has a higher specific surface area, thereby exhibiting excellent activity as a catalyst.
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公开(公告)号：US10654773B2
公开(公告)日：2020-05-19
申请号：US16175630
申请日：2018-10-30
发明人： Hima Bindu Doosa , Ram Mohan Thakur , Vineeth Venu Nath , Kamlesh Gupta , Debasis Bhattacharyya , Sanjiv Kumar Mazumdar , Sankara Sri Venkata Ramakumar
摘要： The present invention is related to an integrated process for enhancing the yields of propylene and other light olefins from Fluid catalytic cracking (FCC) process in combination with Oxidative propane dehydrogenation (OPDH) where in a hydrocarbon stream from Propylene recovery section consisting of propane predominantly, is converted to high value light olefins primarily C3 and C2 olefins by catalytic oxidative dehydrogenation using carbon dioxide from FCC flue gas exiting the regenerator. Several process configurations for the conversion of C3 and C4 alkanes to their respective alkenes separately or simultaneously by integrating with FCC are provided.
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公开(公告)号：US10589258B2
公开(公告)日：2020-03-17
申请号：US15651366
申请日：2017-07-17
发明人： Vasily Simanzhenkov , Xiaoliang Gao , David Jeffrey Sullivan , Hanna Drag , Marie Annette Barnes
IPC分类号： B01J27/057 , B01J23/00 , B01J23/28 , B01J37/00 , B01J37/06 , B01J37/08 , B01J37/10 , C07C5/48
摘要： The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step the activity and reproducibility of the catalyst is improved by conduction the hydrothermal step at higher pressures while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream of the pressure relief valve.
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公开(公告)号：US20200079710A1
公开(公告)日：2020-03-12
申请号：US16462686
申请日：2017-12-04
摘要： Systems and methods for the production of n-butene isomers and/or 1,3-butadiene are disclosed. The systems and method involve an oxidative dehydrogenation (ODH) process for the production of n-butene isomers and 1,3-butadiene light olefins using an adjustable, multi-purpose, and multi-layer-catalyst bed for a reactor.
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公开(公告)号：US20200070136A1
公开(公告)日：2020-03-05
申请号：US16570954
申请日：2019-09-13
发明人： Erik C. Scher , Fabio R. Zurcher , Joel M. Cizeron , Wayne P. Schammel , Alex Tkachenko , Joel Gamoras , Dmitry Karshtedt , Greg Nyce
IPC分类号： B01J35/06 , C10G9/00 , C10G2/00 , C07C5/48 , C07C2/84 , C01G45/02 , C01G45/00 , C01G41/02 , C01G31/02 , C01G25/00 , C01F17/00 , C01F11/02 , C01F7/02 , C01F5/14 , C01F5/02 , B82Y30/00 , B01J37/10 , B01J37/08 , B01J37/03 , B01J37/00 , B01J35/00 , B01J23/34 , B01J23/22 , B01J23/10 , B01J21/10 , B01J21/06
摘要： Nanowires useful as heterogeneous catalysts are provided. The nanowires catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethylene. Related methods for use and manufacture of the same are also disclosed.
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公开(公告)号：US20200038847A1
公开(公告)日：2020-02-06
申请号：US16528828
申请日：2019-08-01
发明人： Vasily Simanzhenkov , Xiaoliang Gao , Marie Barnes , David Sullivan , Yoonhee Kim , Perry de Wit
IPC分类号： B01J27/057 , C07C5/48 , B01J23/22 , B01J35/10 , B01J37/00 , B01J37/04 , B01J37/12 , C01B19/00
摘要： Provided in this disclosure are oxidative dehydrogenation catalysts that include a mixed metal oxide having the empirical formula: Mo1.0V0.12-0.49Te0.05-0.17Nb0.10-0.20Od wherein d is a number to satisfy the valence of the oxide. The oxidative dehydrogenation catalyst is characterized by having XRD diffraction peaks (2θ degrees) at 22±0.2, 27±0.2, 28.0±0.2, and 28.3±0.1. The disclosure also provides methods of making the catalysts that include wet ball milling.
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公开(公告)号：US20200024215A1
公开(公告)日：2020-01-23
申请号：US16515105
申请日：2019-07-18
发明人： Xiaoliang Gao , Marie Barnes , Vasily Simanzhenkov , Elena Sebastiao , David Sullivan , Yoonhee Kim
摘要： This document relates to oxidative dehydrogenation catalysts that include molybdenum, vanadium, and oxygen.
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