-
公开(公告)号：US11691130B2
公开(公告)日：2023-07-04
申请号：US16747131
申请日：2020-01-20
发明人： Vasily Simanzhenkov , Xiaoliang Gao , David Jeffrey Sullivan , Leonid Modestovich Kustov , Aleksey Victorovich Kucherov , Elena Dmitrievna Finashina
IPC分类号： B01J27/057 , B01J23/00 , C07C5/48 , B01J37/10 , B01J37/02 , B01J23/652 , B01J37/04 , B01J37/08
CPC分类号： B01J27/0576 , B01J23/002 , B01J23/6525 , B01J37/0207 , B01J37/0213 , B01J37/0236 , B01J37/04 , B01J37/08 , B01J37/10 , C07C5/48 , B01J2523/00 , Y02P20/52 , B01J2523/00 , B01J2523/55 , B01J2523/56 , B01J2523/64 , B01J2523/68 , B01J2523/824 , C07C5/48 , C07C11/04
摘要： A catalyst for oxidative dehydrogenation (ODH) of ethane with an empirical formula Mo—V—Te—Nb—Pd—O produced using a process comprising impregnation of the Pd component on the surface of the catalyst following a calcination step using a Pd compound free of halogens. The resulting catalyst can be used in both diluted and undiluted ODH processes and shows higher than expected activity without any loss of selectivity.
-
公开(公告)号：US20220144722A1
公开(公告)日：2022-05-12
申请号：US17419382
申请日：2019-12-20
IPC分类号： C07C1/24 , C07C29/147 , C07C5/48
摘要： A process, a system, and an apparatus are provided for converting a lower alkane to an alkene. Oxygen and a lower alkane are provided to an ODH reactor. At least a portion of the lower alkane is converted to an alkene and an ODH stream comprising the alkene, an oxygenate, water, and carbon monoxide is produced. The ODH stream is provided to a water gas shift/hydrogenation (WGS/H) reactor including a WGS/H catalyst. The ODH stream is reacted within the WGS/H reactor and hydrogen and carbon dioxide are generated from the carbon monoxide and water. At least a portion of the oxygenate and hydrogen are converted to an alcohol. Additionally, the alcohol may be dehydrated to form additional alkene and water.
-
公开(公告)号：US11230512B2
公开(公告)日：2022-01-25
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.
-
公开(公告)号：US20210309592A1
公开(公告)日：2021-10-07
申请号：US17316556
申请日：2021-05-10
IPC分类号： C07C5/48 , B01J23/00 , B01J23/28 , B01J23/648 , B01J23/755
摘要： Provided in this disclosure is a process for the oxidative dehydrogenation of a lower alkane into a corresponding alkene. The process includes providing a gas stream comprising the lower alkane to a reactor; contacting, in the oxidative dehydrogenation reactor, the lower alkane with a catalyst that includes a mixed metal oxide; and providing to the last 50% of the oxidative dehydrogenation reactor a stream comprising from 0.01 vol. % to 10 vol. % of a C1-C3 alcohol.
-
公开(公告)号：US10894276B2
公开(公告)日：2021-01-19
申请号：US15921714
申请日：2018-03-15
发明人： Michael Koselek , Leslie Benum , Vasily Simanzhenkov , Hany Farag
摘要： In chemical processes for cracking hydrocarbons, reactors are subject to coking. This results in carburization of the metal substrate for the reactor leading to a reduced reactor life. If the reactor is subject to a decoke process, followed by a steam scour and nitriding there is a reduced tendency to carburization of the metal substrate improving the reactor life.
-
公开(公告)号：US20200171468A1
公开(公告)日：2020-06-04
申请号：US16747119
申请日：2020-01-20
发明人： Vasily Simanzhenkov , Xiaoliang Gao , David Jeffrey Sullivan , Leonid Modestovich Kustov , Aleksey Victorovich Kucherov , Elena Dmitrievna Finashina
IPC分类号： B01J27/057 , B01J23/652 , B01J37/02 , B01J37/10 , C07C5/48 , B01J23/00 , B01J37/08 , B01J37/04
摘要： A catalyst for oxidative dehydrogenation (ODH) of ethane with an empirical formula Mo—V—Te—Nb—Pd—O produced using a process comprising impregnation of the Pd component on the surface of the catalyst following a calcination step using a Pd compound free of halogens. The resulting catalyst can be used in both diluted and undiluted ODH processes and shows higher than expected activity without any loss of selectivity.
-
公开(公告)号：US10668454B2
公开(公告)日：2020-06-02
申请号：US15728948
申请日：2017-10-10
IPC分类号： B01J27/057 , B01J37/04 , B01J37/08 , B01J37/12 , B01J37/10 , B01J37/00 , B01J37/06 , C07C5/48 , B01J37/03 , B01J23/00
摘要： The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step. In some embodiments, the activity and reproducibility of the catalyst is improved by conducting the hydrothermal step while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream of the outlet of the reactor.
-
公开(公告)号：US20200157023A1
公开(公告)日：2020-05-21
申请号：US16597156
申请日：2019-10-09
摘要： A process, a system, and an apparatus are provided for converting a lower alkane to an alkene. Oxygen and the lower alkane are provided to an ODH reactor to convert at least a portion of the lower alkane to an alkene. An ODH stream comprising the alkene, an oxygenate, steam, and a carbon-based oxide is produced. The bulk of the oxygenate is removed from the ODH outlet stream by non-dilutive cooling, with residual oxygenate being removed using dilutive quenching with a carbonate. Subsequently, separation of the carbon-based oxide from the alkene is achieved using a caustic tower, which also produces spent caustic in the form of a carbonate, which is then used as the carbonate for dilutive quenching. Dilutive quenching using a carbonate allows conversion of the oxygenate to an acetate, which can then be used to simplify separation of the oxygenate from water.
-
公开(公告)号：US20200156055A1
公开(公告)日：2020-05-21
申请号：US16690372
申请日：2019-11-21
IPC分类号： B01J38/12 , B01J23/96 , B01J23/652
摘要： Oxidative dehydrogenation of alkanes employs a catalyst, usually a mixed metal oxide, to convert, in the presence of oxygen, a lower alkane into its corresponding alkene. Continuous operation of an oxidative dehydrogenation process may result in a gradual decrease of catalyst activity and or selection, requiring downtime for regeneration. Provided herein is a process for regeneration of an oxidative dehydrogenation catalyst including initiating regeneration by passing a regeneration gas over the catalyst, monitoring regeneration by comparing the oxygen concentration of the regeneration gas before and after being passed over the catalyst, and ceasing regeneration when the oxygen concentration of the regeneration gas after passed over the catalyst is at least 90% of the concentration of the regeneration gas before being passed over the catalyst.
-
公开(公告)号：US10647635B2
公开(公告)日：2020-05-12
申请号：US16164849
申请日：2018-10-19
IPC分类号： C07C5/333 , C07C5/48 , C07C5/42 , B01J27/057
摘要： In some embodiments provided herein are processes for controlling carbon dioxide output levels coming from an oxidative dehydrogenation (ODH) process. Carbon dioxide output from an ODH process includes that produced in the ODH reaction and carry over when carbon dioxide is used as an inert diluent. Under certain circumstances carbon dioxide can also be consumed in the ODH process by acting as an oxidizing agent. By varying the amount of steam introduced into the ODH process an operator may alter the degree to which carbon dioxide acts as an oxidizing agent. This in turn allows a level of control in the degree to which carbon dioxide is consumed in the process, effecting overall carbon dioxide output. Minimizing the carbon dioxide output provides an opportunity to limit or eliminate the requirement for release of carbon dioxide into the atmosphere.
-
-
-
-
-
-
-
-
-
搜索结果
116 条记录 (耗时 0.026 秒)
