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    Methods and systems for separating olefins
    81.
    发明授权
    Methods and systems for separating olefins 有权

    公开(公告)号：US10766836B2

    公开(公告)日：2020-09-08

    申请号：US14210035

    申请日：2014-03-13

    申请人： Kellogg Brown & Root LLC

    发明人： Vijender Kumar Verma ,  Curtis Eng

    IPC分类号： C07C7/167 ,  C07C7/09 ,  C10G7/00 ,  C10G45/32 ,  F25J3/02

    摘要： Systems and methods for separating one or more olefins are provided. In one or more embodiments, the method for separating one or more olefins can include separating at least a portion of one or more C3 and heavier hydrocarbons from a hydrocarbon containing C1 to C20 hydrocarbons to provide a first mixture that can include methane, ethane, ethylene, and/or acetylene. At least a portion of the first mixture can be hydrogenated to convert at least a portion of the acetylene to ethane and ethylene. At least a portion of the methane can be separated from the hydrogenated mixture to provide a second mixture that can include ethane and ethylene. At least a portion of the ethylene can be separated from the second mixture to provide a first product that can include at least 95 mol % ethylene and a second product that can include at least 95 mol % ethane.

    PRODUCING C5 OLEFINS FROM STEAM CRACKER C5 FEEDS
    82.
    发明申请
    PRODUCING C5 OLEFINS FROM STEAM CRACKER C5 FEEDS 审中-公开

    公开(公告)号：US20200108368A1

    公开(公告)日：2020-04-09

    申请号：US16707197

    申请日：2019-12-09

    申请人： LUMMUS TECHNOLOGY LLC

    发明人： Yongqiang Xu ,  Peter Loezos ,  Willibrord A. Groten ,  Romain Lemoine

    IPC分类号： B01J19/24 ,  C07C6/04 ,  C07C7/05 ,  C07C7/163 ,  C07C7/167 ,  C07C7/177 ,  C10G45/32 ,  C10G50/00 ,  C10G9/36

    摘要： Producing C5 olefins from steam cracker C5 feeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control schemes, are also described.

    SYSTEMS AND METHODS FOR ISOPRENE PURIFICATION
    83.
    发明申请
    SYSTEMS AND METHODS FOR ISOPRENE PURIFICATION 审中-公开

    公开(公告)号：US20200055802A1

    公开(公告)日：2020-02-20

    申请号：US16604278

    申请日：2018-04-12

    申请人： SABIC Global Technologies B.V.

    发明人： Ernesto UEHARA

    IPC分类号： C07C7/167

    摘要： Methods for the selective hydrogenation of acetylenic compounds in a product stream that includes isoprene. A method of selectively hydrogenating an acetylenic hydrocarbon in the presence of isoprene may include obtaining a hydrocarbon mixture comprising an acetylenic hydrocarbon, isoprene, and butadiene or cyclopentadiene, or both. If cyclopentadiene is present, the hydrocarbon mixture may comprise greater than 2 wt. % cyclopentadiene. The method may further include contacting the hydrocarbon mixture and hydrogen (H2) with a hydrogenation catalyst under reaction conditions that are more selective to the hydrogenation of the acetylenic hydrocarbon than the isoprene.

    Producing C5 olefins from steam cracker C5 feeds
    84.
    发明授权
    Producing C5 olefins from steam cracker C5 feeds 有权

    公开(公告)号：US10543475B2

    公开(公告)日：2020-01-28

    申请号：US16379414

    申请日：2019-04-09

    申请人： LUMMUS TECHNOLOGY LLC

    发明人： Yongqiang Xu ,  Peter Loezos ,  Willibrord A. Groten ,  Romain Lemoine

    IPC分类号： C07C5/03 ,  C07C5/05 ,  B01J19/24 ,  C07C6/04 ,  C07C7/05 ,  C07C7/163 ,  C07C7/167 ,  C07C7/177 ,  C10G45/32 ,  C10G50/00 ,  C10G9/36

    摘要： Producing C5 olefins from steam cracker C5 feeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control schemes, are also described.

    USE OF ORGANIC DOPANTS TO ENHANCE ACETYLENE HYDROGENATION CATALYSTS
    86.
    发明申请
    USE OF ORGANIC DOPANTS TO ENHANCE ACETYLENE HYDROGENATION CATALYSTS 审中-公开

    公开(公告)号：US20190076831A1

    公开(公告)日：2019-03-14

    申请号：US15702411

    申请日：2017-09-12

    申请人： Chevron Phillips Chemical Company LP

    发明人： Ryan W. Snell ,  Zongxuan Hong

    IPC分类号： B01J31/02 ,  C07C7/167 ,  B01J31/28 ,  B01J37/02 ,  B01J37/16

    摘要： A composition comprising a supported hydrogenation catalyst comprising palladium and a support, wherein the supported hydrogenation catalyst is capable of selectively hydrogenating highly unsaturated hydrocarbons to unsaturated hydrocarbons; and a dopant comprising a fluorene structure. A method of making a selective hydrogenation catalyst including contacting a support with a palladium-containing compound to form a supported-palladium composition; contacting the supported-palladium composition with a dopant comprising a fluorene structure group to form a selective hydrogenation catalyst precursor; and reducing the selective hydrogenation catalyst precursor to form the selective hydrogenation catalyst. A method of selectively hydrogenating highly unsaturated hydrocarbons to an unsaturated hydrocarbon enriched composition by contacting a supported catalyst comprising palladium and a dopant comprising a fluorene structure with a feed comprising highly unsaturated hydrocarbon under conditions suitable for hydrogenating at least a portion of the highly unsaturated hydrocarbon feed to form the unsaturated hydrocarbon enriched composition.