Process for the preparation of catalyst microspheres
    101.
    发明授权
    Process for the preparation of catalyst microspheres 失效
    催化剂微球的制备方法

    公开(公告)号:US07160830B2

    公开(公告)日:2007-01-09

    申请号:US10731917

    申请日:2003-12-10

    Abstract: The present invention relates to a process for the preparation of catalyst particles with a particle diameter in the range 20–2000 microns involving the steps of agitating at least two dry catalyst ingredients, spraying a liquid binding agent on the catalyst ingredients while continuing the agitation, and isolating formed catalyst particles with the desired particle diameter and comprising the catalyst ingredients. In contrast to the conventional way of preparing such particles, spray-drying, the present process allows the formation of small particles from slurries with a high solids content. Hence, smaller amounts of liquid have to be evaporated, which makes the process energy efficient.

    Abstract translation: 本发明涉及一种制备粒径在20-2000微米范围内的催化剂颗粒的方法,包括搅拌至少两种干燥催化剂成分的步骤,在继续搅拌下将液体粘合剂喷洒在催化剂成分上, 并分离具有所需粒径的形成的催化剂颗粒并且包含催化剂成分。 与制备这种颗粒的常规方法相反,喷雾干燥,本方法允许从固体含量高的浆料形成小颗粒。 因此,必须蒸发较少量的液体,这使得工艺能量效率高。

    Preparation of a supported catalyst for the polymerization of
.alpha.-olefins
    108.
    发明授权
    Preparation of a supported catalyst for the polymerization of .alpha.-olefins 失效
    制备用于α-烯烃聚合的负载型催化剂

    公开(公告)号:US5625013A

    公开(公告)日:1997-04-29

    申请号:US422937

    申请日:1995-05-24

    CPC classification number: C08F10/00

    Abstract: A process for the preparation of a supported catalyst for the polymerization of .alpha.-olefins, in which(1) a silicon dioxide-containing support gel is prepared by(1.1) introducing a sodium water glass or potassium water glass solution into a swirling stream of an aqueous mineral acid longitudinally and tangentially to the stream, spraying the resultant silica hydrosol in drop form into a gaseous medium and allowing it to solidify to form a hydrogel, and freeing the resultant hydrogel from salts by washing without prior ageing,(1.2) drying the hydrogel resulting from (1.1) to form the support gel,(2) the support gel (1) is charged with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of process step (3), giving a chromium-containing support gel, and(3) the chromium-containing support gel (2) is heated at from 400.degree. to 1100.degree. C. for from 10 to 1000 minutes in an anhydrous gas stream containing oxygen in a concentration of greater than 10% by volume,comprises drying the hydrogel resulting from step (1.1) in step (1.2) within a time of not more than 60 seconds in a shaping, high-speed dryer at an inlet temperature of from 80.degree. to 400.degree. C.

    Abstract translation: 一种制备用于α-烯烃聚合的负载催化剂的方法,其中(1)含二氧化硅的载体凝胶通过(1.1)将钠水玻璃或钾水玻璃溶液引入旋流 将水性无机酸纵向和切向于料流,将所得的二氧化硅水溶胶以液滴形式喷雾到气态介质中并使其固化形成水凝胶,并通过在没有预先熟化的情况下洗涤将所得水凝胶从盐中释放,(1.2)干燥 由(1.1)产生的形成支持凝胶的水凝胶,(2)载体凝胶(1)中加入三氧化铬或铬化合物,其可以在工艺步骤(3)的条件下转化为三氧化铬,得到 含铬载体凝胶,(3)含铬载体凝胶(2)在含有浓度浓度的氧的无水气流中在400〜1100℃下加热10〜1000分钟 大于10体积%包括在入口温度为80°至400°的成形高速干燥器中在不超过60秒的时间内将步骤(1.2)中由步骤(1.1)得到的水凝胶干燥 DEG C.

    Process for producing spherical zeolite catalyst and apparatus for
producing the same
    110.
    发明授权
    Process for producing spherical zeolite catalyst and apparatus for producing the same 失效
    球形沸石催化剂的制造方法及其制造方法

    公开(公告)号:US5464593A

    公开(公告)日:1995-11-07

    申请号:US273874

    申请日:1994-07-12

    CPC classification number: B01J29/06 B01J29/40 B01J35/08 B01J2229/42

    Abstract: A process for producing a spherical zeolite catalyst is disclosed, which comprises dropping a zeolite-containing alumina sol into a surfactant-containing oil phase from a dropping opening directly or through air to thereby form spherical droplets of the sol, and then allowing the droplets to gel in an aqueous alkaline solution phase underlying the oil phase and withdrawing the thus gelled droplets, said dropping of the sol being conducted while the dropping opening is being impulsed to thereby impart a spherical and uniform shape to the resulting zeolite particles containing alumina as a binder, and a novel apparatus therefor.

    Abstract translation: 公开了一种制备球形沸石催化剂的方法,其包括将含沸石的氧化铝溶胶直接或通过空气从滴入口滴入含表面活性剂的油相中,从而形成溶胶的球形液滴,然后使液滴 凝胶在水相下面的碱性溶液相中并且抽出如此凝胶化的液滴,当滴下的开口被冲击时,所述溶胶的滴下被引导,从而赋予所得到的含有氧化铝作为粘合剂的沸石颗粒的球形和均匀形状 ,及其新颖的装置。

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