Conversion of normal alkenes to tertiary alkyl ethers
    41.
    发明授权
    Conversion of normal alkenes to tertiary alkyl ethers 失效
    正链烯烃转化为叔烷基醚

    公开(公告)号:US5243090A

    公开(公告)日:1993-09-07

    申请号:US914973

    申请日:1992-07-16

    IPC分类号: C07C41/06

    CPC分类号: C07C41/06

    摘要: A process is disclosed for the production of tertiary alkyl ethers wherein linear olefins, particularly n-butene, are isomerized in the vapor phase at high temperature in contact with shape selective metallosilicate catalyst to produce iso-olefin vapor, particularly isobutene. The vaporous iso-butene is then etherified with alkanol to provide alkyl tert-alkyl ether such as MTBE. Unreacted iso-olefin and/or linear olefin and product ether are separated by fractionation and unreacted olefin components recycled. Fractionation of the vapor phase etherification product is carried out by using the fresh liquid linear olefin feedstream as a reflux stream to the fractionator.

    摘要翻译: 公开了用于生产叔烷基醚的方法,其中线性烯烃,特别是正丁烯在气相中在与形状选择性金属硅酸盐催化剂接触的高温下异构化以产生异烯烃蒸气,特别是异丁烯。 然后将气态异丁烯与烷醇醚化,得到烷基叔烷基醚如MTBE。 通过分级分离未反应的异烯烃和/或直链烯烃和产物醚,并回收未反应的烯烃组分。 通过使用新鲜液体线性烯烃进料流作为回流流向分馏器进行气相醚化产物的分馏。

    Catalytic cracking process utilizing an iso-olefin enhancer catalyst
additive
    42.
    发明授权
    Catalytic cracking process utilizing an iso-olefin enhancer catalyst additive 失效
    使用异烯烃增强剂催化剂添加剂的催化裂化方法

    公开(公告)号:US5234575A

    公开(公告)日:1993-08-10

    申请号:US738370

    申请日:1991-07-31

    IPC分类号: C10G11/18 C10G51/02

    CPC分类号: C10G11/18 C10G51/026

    摘要: The invention relates to improving the selectivity of the production of isobutylene or 2-methylpropene during fluid catalytic cracking of heavy C.sub.9 + aromatic containing feeds including resids and/or gas oils by employing two catalyst components, one of which comprises ZSM-23, ZSM-22, ZSM-35 or similarly structured catalysts and the other catalyst component being effective under the fluid catalytic cracking conditions to produce high octane gasoline.

    摘要翻译: 本发明涉及通过使用两种催化剂组分,其中一种包括ZSM-23,ZSM-22(其中一种包括ZSM-23,ZSM-22),改进了含C 9 +芳族化合物进料的重C9 +芳族化合物进料的生产异丁烯或2-甲基丙烯的选择性 ,ZSM-35或类似结构的催化剂,另一种催化剂组分在流化催化裂化条件下是有效的,以产生高辛烷值汽油。

    Conversion of synthesis gas to liquid hydrocarbons
    44.
    发明授权
    Conversion of synthesis gas to liquid hydrocarbons 失效
    合成气转化为液态烃

    公开(公告)号:US4978689A

    公开(公告)日:1990-12-18

    申请号:US324795

    申请日:1989-03-17

    IPC分类号: B01J23/78 C07C1/04 C10G2/00

    摘要: The medium pressure Fischer-Tropsch synthesis of liquid hydrocarbons conducted with an iron catalyst is made more efficient by temporarily suspending conventional synthesis and treating the catalyst with a high partial pressure of water vapor, after which conventional synthesis is resumed. The treatment inparts a large increase in selectivity for liquids with reduction of methane formation. The treatment is very effective with alkali (e.g. potassium) promoted precipitated iron catalyst.

    摘要翻译: 用铁催化剂进行的液体碳氢化合物的中压费 - 托合成通过暂时悬浮常规合成和用高分压水蒸气处理催化剂而更有效,之后恢复常规合成。 该处理对于减少甲烷形成的液体的选择性大大增加。 该处理对于碱(例如钾)促进的沉淀铁催化剂是非常有效的。

    Fischer-tropsch process
    45.
    发明授权
    Fischer-tropsch process 失效
    费 - 托过程

    公开(公告)号:US4906671A

    公开(公告)日:1990-03-06

    申请号:US18657

    申请日:1987-02-25

    IPC分类号: C07C1/04 C10G2/00

    CPC分类号: C10G2/334 C07C1/043 C07C1/044

    摘要: An improved Fischer-Tropsch process for hydrocarbon synthesis operated in the fluid mode of the Sasol's Synthol Process provides increased diesel and heavier hydrocarbon yield wherein a Fischer-Tropsch synthesis catalyst modified by a minor amount of a zeolite catalyst selectively converts enough waxy product to prevent adhesion between catalyst particles which might interfere with catalyst flow thereby permitting maximization of diesel oil and heavy hydrocarbon yield.

    摘要翻译: 在Sasol的Synthol过程的流体模式下操作的用于烃合成的改进的费 - 托方法提供增加的柴油和较重的烃产率,其中通过少量沸石催化剂改性的费 - 托合成催化剂选择性地转化足够的蜡质产物以防止粘附 在可能干扰催化剂流动的催化剂颗粒之间,从而允许最大化柴油和重质烃产率。

    Xylene isomerization
    49.
    发明授权
    Xylene isomerization 失效
    二甲苯异构化

    公开(公告)号:US4159282A

    公开(公告)日:1979-06-26

    申请号:US913999

    申请日:1978-06-09

    CPC分类号: C07C5/2775 Y02P20/52

    摘要: A catalytic process is provided for isomerizing an isomerization feed containing an aromatic C.sub.8 mixture of ethylbenzene and xylene in which the para-xylene content is less than equilibrium which comprises contacting said feed, under conversion conditions, with a catalyst comprising a crystalline aluminosilicate zeolite having a crystal size of at least about 1 micron, a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12 to yield an isomerization product characterized by a reduced ethylbenzene content and an enhanced para-xylene content.

    摘要翻译: {PG,1提供了异构化异构化进料异构化的异构化原料,该异构化进料含有芳族C {HD 8 {乙基苯和二甲苯的混合物,其中对二甲苯含量小于平衡,其包括在转化条件下将所述进料与 催化剂,其包含晶体尺寸为至少约1微米,二氧化硅与氧化铝之比为至少约12的结晶硅铝酸盐沸石和约1至12的约束指数,以产生异构化产物 其特征在于乙苯含量降低和对二甲苯含量增加。