Producing C5 olefins from steam cracker C5 feeds

    公开(公告)号:US10814301B2

    公开(公告)日:2020-10-27

    申请号:US15901415

    申请日:2018-02-21

    Abstract: Producing C5 olefins from steam cracker C5 reeds 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 traction 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.

    PRODUCING C5 OLEFINS FROM STEAM CRACKER C5 FEEDS
    13.
    发明申请
    PRODUCING C5 OLEFINS FROM STEAM CRACKER C5 FEEDS 审中-公开
    从蒸汽破碎机C5饲料生产C5油脂

    公开(公告)号:US20160221894A1

    公开(公告)日:2016-08-04

    申请号:US15010173

    申请日:2016-01-29

    Abstract: 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.

    Abstract translation: 从蒸汽裂化器C5进料生产C5烯烃可以包括在二聚反应器中使包含环戊二烯,C 5烯烃和C 6 +烃的混合烃流反应,其中环戊二烯被二聚化成二环戊二烯。 二聚反应器流出物可以分离成包含C 6 +烃和二环戊二烯的馏分和包含C5烯烃和C5二烯的第二级分。 可以将第二馏分,饱和烃稀释剂流和氢气进料到催化蒸馏反应器系统中,以将来自饱和烃稀释剂,环状C 5烯烃和包含在第二馏分中的C5二烯烃的线性C5烯烃同时分离并选择性氢化C5二烯。 从催化蒸馏反应器系统回收包括直链C 5烯烃和包含环状C 5烯烃的塔底产物的塔顶馏出物。 还描述了C5烯烃体系和方法的其它方面,包括催化剂配置和控制方案。

    Producing C5 olefins from steam cracker C5 feeds

    公开(公告)号:US10252240B2

    公开(公告)日:2019-04-09

    申请号:US15901261

    申请日:2018-02-21

    Abstract: 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.

    PROCESS AND APPARATUS FOR ENHANCED REMOVAL OF CONTAMINANTS IN A FLUID CATALYTIC CRACKING PROCESSES

    公开(公告)号:US20180079968A1

    公开(公告)日:2018-03-22

    申请号:US15705769

    申请日:2017-09-15

    Abstract: Systems for separating a contaminant trapping additive from a cracking catalyst may include a contaminant removal vessel having one or more fluid connections for receiving contaminated cracking catalyst, contaminated contaminant trapping additive, fresh contaminant trapping additive, and a fluidizing gas. In the contaminant removal vessel, the spent catalyst may be contacted with contaminant trapping additive, which may have an average particle size and/or density greater than the cracking catalyst. A separator may be provided for separating an overhead stream from the contaminant removal vessel into a first stream comprising cracking catalyst and lifting gas and a second stream comprising contaminant trapping additive. A recycle line may be used for transferring contaminant trapping additive recovered in the second separator to the contaminant removal vessel, allowing contaminant trapping additive to accumulate in the contaminant removal vessel. A bottoms product line may provide for recovering contaminant trapping additive from the contaminant removal vessel.

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