Alkylaromatic process using efficient prefractionation
    1.
    发明授权
    Alkylaromatic process using efficient prefractionation 失效
    使用有效的初步分选的烷基芳族工艺

    公开(公告)号:US06479720B1

    公开(公告)日:2002-11-12

    申请号:US09474973

    申请日:1999-12-29

    IPC分类号: C07C15067

    CPC分类号: C07C15/00

    摘要: A process for the production of alkylaromatic hydrocarbons by alkylating aromatic hydrocarbons with linear olefinic hydrocarbons is disclosed. The linear olefinic hydrocarbons are produced by dehydrogenating linear paraffinic hydrocarbons which are extracted from a heartcut that is distilled from a kerosene boiling range fraction in either a dividing wall fractionation column or in two fully thermally coupled fractionation columns. The process significantly decreases the cost of utilities in producing alkylaromatic precursors for detergent manufacture.

    摘要翻译: 公开了通过用直链烯烃烷基化芳烃来生产烷基芳烃的方法。 线性烯烃是通过从线性链烷烃脱氢制备的,所述线性链烷烃是从分裂壁分馏塔中的煤油沸程馏分或两个完全热耦合的分馏塔中蒸馏的心切出提取的。 该方法显着降低了生产用于洗涤剂制造的烷基芳族前体的公用事业的成本。

    Fluid-bed aromatics alkylation with staged injection of alkylating agents
    2.
    发明授权
    Fluid-bed aromatics alkylation with staged injection of alkylating agents 有权
    流化床芳族化合物烷基化,分期注入烷基化剂

    公开(公告)号:US06642426B1

    公开(公告)日:2003-11-04

    申请号:US09166188

    申请日:1998-10-05

    IPC分类号: C07C15067

    CPC分类号: C07C2/864 C07C15/08

    摘要: A system and process for producing xylene and other alkylated aromatics includes one or more fluidized bed reaction zones that provide contact between the reactants (i.e., an aromatic reactant and an alkylating reagent). Improved conversion and selectivity is realized when the alkylating reagent is stagewise injected into the fluidized bed at one or more locations downstream from the location of aromatic reactant introduction into the fluidized bed. Preferably, the alkylating reagent is introduced at a plurality of locations along the axial direction of the fluidized bed reaction zone, or at plural locations between a plurality of different fluidized bed reaction zones.

    摘要翻译: 用于生产二甲苯和其它烷基化芳族化合物的体系和方法包括提供反应物(即芳族反应物和烷基化试剂)之间的接触的一个或多个流化床反应区。 当将烷基化试剂在芳族反应物引入流化床的位置下游的一个或多个位置分阶段注入流化床时,实现了改进的转化率和选择性。 优选地,烷基化试剂沿着流化床反应区的轴向的多个位置或多个不同的流化床反应区之间的多个位置引入。

    Method and apparatus for alkylation using solid catalyst particles in a transport reactor
    4.
    发明授权
    Method and apparatus for alkylation using solid catalyst particles in a transport reactor 失效
    在运输反应器中使用固体催化剂颗粒进行烷基化的方法和装置

    公开(公告)号:US06486374B1

    公开(公告)日:2002-11-26

    申请号:US09249749

    申请日:1999-02-12

    IPC分类号: C07C15067

    摘要: A method and apparatus for alkylating an alkylation substrate with an alkylating agent in the presence of solid catalyst particles in a transport reactor is disclosed. Solid catalyst particles in the transport reactor effluent recirculate to the inlet of the transport reactor through one or more conduits. The rate through each conduit is regulated by fluid-controlled valves that use the alkylation substrate as the regulating fluid. This method and apparatus help ensure uniform or symmetric flow of catalyst from the effluent of the transport reactor to the bottom of the transport reactor. This method and apparatus also help ensure uniform or symmetric flow of alkylation substrate to the bottom of the transport reactor with minimal bypassing by the alkylating agent around of the transport reactor. This invention finds use in the production of motor fuels by the alkylation of liquid hydrocarbons in the presence of solid catalyst particles.

    摘要翻译: 公开了一种在运输反应器中在固体催化剂颗粒存在下用烷基化剂烷基化底物的方法和装置。 运输反应器流出物中的固体催化剂颗粒通过一个或多个导管再循环到输送反应器的入口。 通过每个管道的速率由使用烷基化底物作为调节流体的流体控制阀调节。 该方法和设备有助于确保催化剂从输送反应器的流出物到输送反应器底部的均匀或对称流动。 该方法和装置还有助于确保烷基化底物均匀或对称地流动到运输反应器的底部,同时通过运输反应器周围的烷基化剂的最小旁路。 本发明用于在固体催化剂颗粒存在下通过液体烃的烷基化来生产汽车燃料。

    Reactive distillation process for the alkylation of aromatic hydrocarbons
    5.
    发明授权
    Reactive distillation process for the alkylation of aromatic hydrocarbons 失效
    用于烷基化芳烃的反应蒸馏方法

    公开(公告)号:US06642425B2

    公开(公告)日:2003-11-04

    申请号:US10091199

    申请日:2002-03-05

    IPC分类号: C07C15067

    CPC分类号: C07C2/66 Y02P20/127

    摘要: A unified process for reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as benzene and cumene with straight chain C6-C18 olefins using a solid acid alkylation catalyst supported in the reflux zone of the distillation column. The process is continuous, using a reactive distillation configuration such that at least a portion of the olefin is injected below the benzene rectification zone at the top of the column. The aromatic hydrocarbon is injected continuously at a low rate above the rectification zone at the base of the column and above the reboiler. The alkylation reaction takes place primarily in the liquid phase on the solid acid catalyst and is characterized in that the molar ratio of aromatic hydrocarbon to olefin in the liquid phase may be adjusted. The molar ratio is adjustable up to about 100/1, through adjustment of the internal column operating pressure, the benzene reflux rate, the amount of benzene removed from the reflux condenser to storage or from the reboiler with the distillation column operated at or near total aromatic hydrocarbon reflux. The unexpectedly high liquid phase aromatic hydrocarbon to olefin molar ratios achieved in the reactive distillation column increases the selectivity to mono-alkylated aromatics and helps stabilize catalyst lifetime.

    摘要翻译: 在压力下进行反应蒸馏的统一方法是使用负载在蒸馏塔的回流区中的固体烷基化催化剂烷基化轻质芳烃如苯和枯烯与直链C 6 -C 18烯烃。 该方法是连续的,使用反应蒸馏构型使得至少一部分烯烃被注入塔顶部的苯精馏区下方。 芳族烃在柱的底部和再沸器上方的精馏区上方的低速率连续注入。 烷基化反应主要发生在固相酸催化剂上的液相中,其特征在于可调节芳族烃与烯烃在液相中的摩尔比。 通过调整内部柱的工作压力,苯回流速率,从回流冷凝器到储存器或从蒸馏塔中回收的蒸馏塔中除去的苯的量可调整到约100/1的摩尔比可以达到约100/1 芳烃回流。 在反应蒸馏塔中实现的意想不到的高液相芳烃与烯烃的摩尔比提高了对单烷基化芳族化合物的选择性,有助于稳定催化剂的使用寿命。

    Method for preparing diarylethane
    6.
    发明授权
    Method for preparing diarylethane 失效
    二芳基乙烷的制备方法

    公开(公告)号:US06395947B1

    公开(公告)日:2002-05-28

    申请号:US09600301

    申请日:2000-07-11

    IPC分类号: C07C15067

    摘要: A method for preparing diarylethane is disclosed. Alkylation is carried out in a continuous type process at 100-300° C. under a pressure of 1-45 kg/cm2 G in the presence of a solid acid catalyst while a reactant mixture comprising alpha-methylbenzylalcohol and at least one aromatic hydrocarbon at a volume ratio of 1:1-10, is fed at a weight hourly space velocity of 0.1-10 h−1. The alpha-methylbenzylalcohol acts as an ailylating agent. Diarylethane can be prepared at a low cost, but a high production yield by the method.

    摘要翻译: 公开了一种制备二乙基乙烷的方法。 烷基化在连续型方法中,在固体酸催化剂存在下,在1-300kg / cm2的压力下,在100-300℃下进行,而包含α-甲基苄醇和至少一种芳族烃的反应混合物在 体积比为1:1-10,以0.1-10h-1的重时空速进料。 α-甲基苄醇作为芳香化剂。 二芳基乙烷可以低成本制备,但通过该方法生产成品率高。