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105 条记录 (耗时 0.015 秒)

    Method of increasing alpha-olefin content
    1.
    发明授权
    Method of increasing alpha-olefin content 有权

    公开(公告)号：US11453627B2

    公开(公告)日：2022-09-27

    申请号：US16805259

    申请日：2020-02-28

    申请人： Liquidpower Specialty Products Inc.

    发明人： Stuart N. Milligan

    IPC分类号： C07C6/04 ,  C10G35/04 ,  C08F10/14 ,  C08F10/08 ,  C07C4/06 ,  C10G11/02 ,  C07C5/27 ,  C07C5/25 ,  C07C4/10

    摘要： Implementations described herein generally relate to methods for purifying alpha-olefins. The alpha-olefins may be used to form drag reducing agents for improving flow of hydrocarbons through conduits, particularly pipelines. In one implementation, a method of increasing alpha-olefin content is provided. The method includes providing an olefin feedstock composition having an alpha-mono-olefin and at least one of a diolefin having an equal number of carbon atoms to the alpha-mono-olefin and/or a triolefin having an equal number of carbon atoms to the alpha-mono-olefin. The method further includes contacting the olefin feedstock composition with ethylene in the presence of a catalyst composition including an olefin metathesis catalyst. The method further includes reacting the olefin feedstock composition and ethylene at metathesis reaction conditions to produce an alpha-olefin product comprising the alpha-mono-olefin and alpha-olefins having fewer carbon atoms than the alpha-mono-olefin.

    Process and system for the production of isoprene
    3.
    发明授权
    Process and system for the production of isoprene 有权

    公开(公告)号：US08178736B2

    公开(公告)日：2012-05-15

    申请号：US12462688

    申请日：2009-08-07

    申请人： Robert J Gartside ,  Shane R Kleindienst

    发明人： Robert J Gartside ,  Shane R Kleindienst

    IPC分类号： C07C6/04 ,  C07C4/10 ,  C07C5/25

    CPC分类号： C07C11/18 ,  C07C4/04

    摘要： Disclosed herein is a process for producing isoprene that includes reacting a mixed C4 metathesis feed stream comprising isobutylene and at least one of 1-butene and 2-pentene in a first metathesis reactor in the presence of a first metathesis catalyst under conditions sufficient to produce an intermediate product stream comprising at least 30 wt. % 2-methyl-2-pentene based upon the olefin content of fresh feed in the mixed C4 feed stream, and at least one of ethylene and propylene, separating the 2-methyl-2-pentene, subjecting the separated 2-methyl-2-pentene to pyrolysis to produce a reaction product stream comprising isoprene, and separating the isoprene into an isoprene product stream using fractionation. A system used in producing isoprene is also disclosed.

    Hydrocracking process utilizing group VIII metal/alumina catalysts activated with hydrogen halide/halosilane/organic halide
    6.
    发明授权
    Hydrocracking process utilizing group VIII metal/alumina catalysts activated with hydrogen halide/halosilane/organic halide 失效
    使用由卤化氢/卤代硅烷/有机卤化物活化的第VIII族金属/氧化铝催化剂的加氢裂化工艺

    公开(公告)号：US4035283A

    公开(公告)日：1977-07-12

    申请号：US720523

    申请日：1976-09-07

    申请人： John W. Myers

    发明人： John W. Myers

    IPC分类号： B01J23/40 ,  B01J37/22 ,  C07C4/10 ,  C10G47/14 ,  C10G13/08 ,  B01J27/06

    CPC分类号： C10G47/14 ,  B01J23/40 ,  B01J37/22 ,  C07C4/10 ,  C07C2521/04 ,  C07C2523/42 ,  C07C2523/44 ,  C07C2523/46

    摘要： A catalyst comprising a Group VIII metal selected from Pt, Ir, Os, Ru, Rh, or Pd supported on alumina is activated at an elevated temperature with an activating gas comprising a hydrogen halide such as HCl, a halosilane such as silicon tetrachloride, and an organic halide such as ethyl chloride. The resulting catalysts exhibit an outstandingly high isomerization rate constant in the isomerization of feedstocks such as n-butane to isobutane. These catalysts are also suitable for hydrocracking operations.

    摘要翻译： 包含选自负载在氧化铝上的Pt，Ir，Os，Ru，Rh或Pd的Ⅷ族金属的催化剂在升高的温度下用包含卤化氢如HCl的活化气体，卤代硅烷如四氯化硅和 有机卤化物如乙基氯。 所得到的催化剂在诸如正丁烷到异丁烷的原料异构化中表现出非常高的异构化速率常数。 这些催化剂也适用于加氢裂化操作。

    Pyrolysis processes
    7.
    发明授权
    Pyrolysis processes 失效
    热解法

    公开(公告)号：US3637886A

    公开(公告)日：1972-01-25

    申请号：US3637886D

    申请日：1967-09-22

    申请人： KENNETH J FRECH

    发明人： FRECH KENNETH J

    IPC分类号： C07C4/10 ,  C07C3/58

    CPC分类号： C07C4/10 ,  C07C11/12

    摘要： THERE IS DISCLOSED A METHOD TO IMPROVE THE SELECTIVITY OF A PROCESS WHEREBY CERTAIN OLEFINS WHICH ARE DIOLEFIN PRECURSORS, ARE DEMETHANATED OR DE-ETHANATED BY PYROLYSIS TO PRODUCE CERTAIN DIOLEFINS. THE IMPROVEMENT CONSISTS OF ADDING TO THE DIOLEFIN PRECURSORS SMALL AMOUNTS OF DIOLEFINS, CONTAINING THE SAME NUMBER OF CARBON ATOMS AND SIDE CHAINS IN THE SAME POSITION, IF ANY, AS THE DIOLEFIN PRECURSORS, PRIOR TO THE PYROLYSIS.