COMBINED PREPARATION OF BUTENE AND OCTENE FROM ETHENE
    23.
    发明申请
    COMBINED PREPARATION OF BUTENE AND OCTENE FROM ETHENE 审中-公开
    从乙烯组合制备储藏物和金属

    公开(公告)号:US20160207848A1

    公开(公告)日:2016-07-21

    申请号:US15000807

    申请日:2016-01-19

    IPC分类号: C07C2/24

    摘要: A process for the combined preparation of a butene and an octene from ethene, proceeds by: a) providing a solvent having a boiling point or boiling range above the boiling points of the butenes and below the boiling points of the octenes and wherein the solvent is an inert solvent or is hexene alone or is hexene admixed with pentane or hexane or heptane or is a mixture of pentane, hexane, and heptane; b) providing a first feed mixture containing at least the solvent and ethene dissolved therein; c) providing a second feed mixture containing at least hexene, the solvent and also ethene dissolved in the solvent and/or in the hexene; d) transferring the first feed mixture into a first synthesis and the second feed mixture into a second synthesis, wherein the first and second syntheses are physically separated from one another; e) oligomerising of at least part of the ethene present in the first feed mixture in the presence of a first heterogeneous catalyst and in the presence of the solvent in the first synthesis to give a first reaction mixture comprising at least the solvent, butene and hexene; f) separating a butene-containing low boiler fraction from the first reaction mixture or from a stream based on the first reaction mixture; g) separating an intermediate boiler fraction containing hexene and the solvent from the first reaction mixture or from a stream based on the first reaction mixture; h) using at least part of the intermediate boiler fraction in the course of providing the second feed mixture; and i) reacting at least part of the ethene present in the second feed mixture with at least part of the hexene present in the second feed mixture in the presence of a second heterogeneous catalyst and in the presence of the solvent in the second synthesis to give a second reaction mixture comprising at least octene and the solvent.

    摘要翻译: 从乙烯组合制备丁烯和辛烯的方法是通过以下方式进行的:a)提供沸点或沸点范围高于丁烯沸点并低于辛烯沸点的溶剂,其中溶剂是 惰性溶剂或己烯或己烯与戊烷或己烷或庚烷混合,或是戊烷,己烷和庚烷的混合物; b)提供至少含有溶解在其中的溶剂和乙烯的第一进料混合物; c)提供至少含有己烯,溶剂和溶解在溶剂和/或己烯中的乙烯的第二进料混合物; d)将第一进料混合物转移到第一合成物中,将第二进料混合物转移到第二合成物中,其中第一和第二合成物在物理上彼此分离; e)在第一种非均相催化剂的存在下和在第一种合成中的溶剂存在下,存在于第一进料混合物中的至少部分乙烯的低聚反应,得到至少包含溶剂,丁烯和己烯的第一反应混合物 ; f)从第一反应混合物或基于第一反应混合物的物流中分离含丁烯的低沸点馏分; g)从第一反应混合物或基于第一反应混合物的流中分离含有己烯和溶剂的中间锅炉馏分; h)在提供第二进料混合物的过程中使用至少部分中间锅炉馏分; 和i)使第二进料混合物中存在的乙烯的至少一部分与第二进料混合物中存在的第二进料混合物中的至少部分己烯在第二种非均相催化剂的存在下反应,并在第二次合成中在溶剂存在下反应,得到 至少包含辛烯和溶剂的第二反应混合物。

    Silicon-aluminum mixed oxide powder
    24.
    发明授权
    Silicon-aluminum mixed oxide powder 有权
    硅铝混合氧化物粉末

    公开(公告)号:US08980784B2

    公开(公告)日:2015-03-17

    申请号:US13997677

    申请日:2012-02-03

    摘要: Silicon-aluminum mixed oxide powder having a weight ratio of (Al2O3/SiO2)ttl in the total primary particle of from 0.003 to 0.05, a weight ratio (Al2O3/SiO2)surface of the primary particles in a surface layer having a thickness of about 5 nm which is less than in the total primary particle and a BET surface area of from 50 to 250 m2/g. It is prepared by igniting one or more silicon compounds selected from the group consisting of CH3SiCl3, (CH3)2SiCl2, (CH3)3SiCl and (n-C3H7)SiCl3, a hydrolysable and oxidizable aluminum compound, at least one fuel gas and air and burning the flame into a reaction chamber, subsequently separating the solid from gaseous materials and subsequently treating the solid with water vapor. The silicon-aluminum mixed oxide powder can be used as catalyst.

    摘要翻译: 总一次粒子中的重量比(Al 2 O 3 / SiO 2)tt1为0.003〜0.05的硅铝混合氧化物粉末,表层的一次粒子的重量比(Al 2 O 3 / SiO 2)表面的厚度为约 5nm,小于总一次粒子,BET表面积为50〜250m 2 / g。 通过点燃一种或多种选自CH 3 SiCl 3,(CH 3)2 Cl 2,(CH 3)3 SiCl和(n-C 3 H 7)SiCl 3)的硅化合物,可水解和可氧化的铝化合物,至少一种燃料气体和空气以及 将火焰燃烧到反应室中,随后将固体与气态物质分离,随后用水蒸汽处理固体。 硅铝混合氧化物粉末可用作催化剂。

    Process for the dissociation of MTBE
    28.
    发明授权
    Process for the dissociation of MTBE 有权
    MTBE解离过程

    公开(公告)号:US07919662B2

    公开(公告)日:2011-04-05

    申请号:US11838340

    申请日:2007-08-14

    IPC分类号: C07C1/20

    摘要: Isobutene is prepared by dissociation of MTBE in the gas phase, by a) fractional distillation of an MTBE-containing stream comprising feed MTBE (I) and a recycle stream (VIII) to give an MTBE-containing overhead stream (II) and a bottom stream (III) having a boiling point higher than MTBE, b) catalytic dissociation of the overhead stream (II) obtained in step a) to give a dissociation product (IV), c) separation by distillation of the dissociation product (IV) obtained in step b) into an overhead stream (V) comprising more than 90% by mass of isobutene and a bottom stream (VI) comprising diisobutene, MTBE and more than 50% of the methanol present in the dissociation product (IV), d) fractional distillation of the bottom stream obtained in step c) under conditions under which the methanol is obtained as bottom product (VII) and more than 99% of the MTBE is obtained in the overhead product (VIII), and e) recirculation of the overhead product (VIII) to step a).

    摘要翻译: 通过a)分馏含有进料MTBE(I)和再循环物流(VIII)的含MTBE的物流,得到含MTBE的塔顶馏出物流(II)和底部 沸点高于MTBE的流(III),b)步骤a)中获得的塔顶馏出物流(II)的催化解离,得到解离产物(IV),c)通过蒸馏分离获得的解离产物(IV) 在步骤b)中进入包含大于90质量%的异丁烯的塔顶物流(V)和包含二异丁烯,MTBE和存在于解离产物(IV)中的甲醇的50%以上的底部物流(VI),d) 在塔顶馏出物(VIII)中获得步骤c)中获得的底部物流的分馏,其中获得作为底部产物(VII)的甲醇和高于99%的MTBE的馏分,和e)塔顶馏出物的再循环 产物(VIII)至步骤a)。

    PROCESS FOR PREPARING ISOOLEFINS
    30.
    发明申请
    PROCESS FOR PREPARING ISOOLEFINS 审中-公开
    制备ISOOLEFINS的方法

    公开(公告)号:US20080058572A1

    公开(公告)日:2008-03-06

    申请号:US11839597

    申请日:2007-08-16

    IPC分类号: C07C1/20

    摘要: A continuous process for preparing an isoolefin having 4 to 6 carbon atoms is performed by cleaving a compound of the formula I R1—O—R2   (I) wherein R1=a tertiary alkyl radical having 4 to 6 carbon atoms, and R2=H or an alkyl radical, in a gas phase over a solid catalyst, in the temperature range of 200 to 400° C., at a pressure of 0.1 to 1.2 MPa, in a reactor which is equipped with a heating jacket and is heated with a liquid heat carrier, wherein the cleavage is carried out in such a way that a temperature drop in the catalyst zone at any point in relation to the entrance temperature is less than 50° C., wherein (i) a reaction mixture in the reactor and (ii) the heat carrier in the jacket flow through the reactor in cocurrent, and wherein a temperature difference of the heat carrier between a feed point to the reactor and an outlet from the reactor is adjusted to less than 40° C.

    摘要翻译: 用于制备具有4至6个碳原子的异烯烃的连续方法是通过将式I的化合物<?in-line-formula description =“In-Line Formulas”end =“lead”→> R 1 (I)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中R 1 = 在固体催化剂上的气相中,在200-400℃的温度范围内,具有4-6个碳原子的叔烷基和R 2 = H或烷基,在 在装有加热套的反应器中的压力为0.1至1.2MPa,并用液体热载体加热,其中切割是以任何相关位置的催化剂区域的温度下降的方式进行的 入口温度低于50℃,其中(i)反应器中的反应混合物和(ii)夹套中的热载体并流流过反应器,并且其中热载体的温度差在 进料点到反应器 并将来自反应器的出口调节至小于40℃。