Aromatic hydrocarbon dehydrogenation process
    6.
    发明授权
    Aromatic hydrocarbon dehydrogenation process 失效
    芳烃脱氢工艺

    公开(公告)号:US4113787A

    公开(公告)日:1978-09-12

    申请号:US758092

    申请日:1977-01-10

    Applicant: Dennis J. Ward

    Inventor: Dennis J. Ward

    Abstract: Alkylaromatic hydrocarbons including ethylbenzene are dehydrogenated in a vapor phase reactant stream, preferably at subatmospheric conditions. The resultant reaction zone effluent is partially condensed and then separated in a subatmospheric product settler. Hydrocarbons from the product settler are fractionated to yield a styrene bottoms stream, an overhead liquid recycled to the reaction zone and an overhead vapor. This vapor is admixed with vapors from the product settler, compressed to a superatmospheric pressure, and partially condensed to form a liquid which is fractionated to remove the net light aromatic hydrocarbons produced in the process.

    Abstract translation: 包括乙苯在内的烷基芳族烃在气相反应物流中脱氢,优选在低于大气压的条件下脱氢。 所得反应区流出物部分冷凝,然后在低于大气压的产物沉降器中分离。 将来自产物沉降器的碳氢化合物分馏以产生苯乙烯塔底物流,再循环至反应区的塔顶液体和塔顶蒸气。 将该蒸气与来自产物沉降器的蒸气混合,压缩至超大气压,并部分冷凝以形成液体,其被分馏以除去在该过程中产生的净光芳烃。

    Reaction apparatus
    7.
    发明授权
    Reaction apparatus 失效
    反应装置

    公开(公告)号:US3807963A

    公开(公告)日:1974-04-30

    申请号:US23305572

    申请日:1972-03-09

    Applicant: SMITH J

    Inventor: SMITH J

    Abstract: Endothermic and exothermic reactions utilizing inert diluents or thermally stable reactants or product components are conducted by employing the inert diluent, etc., initially as a heat exchange medium followed by combining at least a portion thereof with the principal reactant to form the reactant feed stream to the reaction zone. The concept is useful in situations wherein isothermal conditions are desired. Both method and apparatus are described for carrying out the concept with particular application to reactions involving the dehydrogenation of alkylated aromatic hydrocarbons.

    Abstract translation: 使用惰性稀释剂或热稳定反应物或产物组分的吸热和放热反应通过使用惰性稀释剂等,最初作为热交换介质进行,然后将其至少一部分与主要反应物组合以形成反应物进料流 反应区。 该概念在需要等温条件的情况下是有用的。 描述了用于实施具有特定应用于涉及烷基化芳烃的脱氢反应的概念的方法和装置。

    C-nitrosoaniline compounds and their blends as polymerization inhibitors
    10.
    发明授权
    C-nitrosoaniline compounds and their blends as polymerization inhibitors 失效
    C-亚硝基苯胺化合物及其共混物作为聚合抑制剂

    公开(公告)号:US06899806B2

    公开(公告)日:2005-05-31

    申请号:US10703592

    申请日:2003-11-10

    Abstract: Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of:A) at least one first inhibitor selected from the group consisting of C-nitrosoaniline compounds; andB) at least one second inhibitor selected from the group consisting of quinone alkides, nitroaromatic compounds, hydroxylamine compounds, phenylenediamine compounds, quinone compounds, and hydroquinone compounds. Also disclosed is a composition of matter comprising:A) at least one member selected from the group consisting of C-nitrosoaniline compounds; andB) at least one member selected from the group consisting of quinone alkides, nitroaromatic compounds, hydroxylamine compounds, phenylenediamine compounds, quinone compounds, and hydroquinone compounds.

    Abstract translation: 本文公开了抑制烯属不饱和单体过早聚合的方法,包括向所述单体中加入有效量的:A)至少一种选自C-亚硝基苯胺化合物的第一抑制剂; 和B)选自由醌类,硝基芳族化合物,羟胺化合物,苯二胺化合物,醌化合物和氢醌化合物组成的组中的至少一种第二抑制剂。 还公开了一种物质组合物,其包含:A)至少一种选自C-亚硝基苯胺化合物; 和B)选自由醌类,硝基芳族化合物,羟胺化合物,苯二胺化合物,醌化合物和氢醌化合物组成的组中的至少一种。

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