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    Preparation of isobutene by dissociation of MTBE
    7.
    发明授权
    Preparation of isobutene by dissociation of MTBE 有权
    通过MTBE离解制备异丁烯

    公开(公告)号：US08940951B2

    公开(公告)日：2015-01-27

    申请号：US13381680

    申请日：2010-06-16

    申请人： Markus Winterberg ,  Dirk Roettger ,  Armin Rix ,  Reiner Bukohl ,  Walter Luh ,  Holger Wiederhold ,  Gunnar Schilling ,  Christian Boeing

    发明人： Markus Winterberg ,  Dirk Roettger ,  Armin Rix ,  Reiner Bukohl ,  Walter Luh ,  Holger Wiederhold ,  Gunnar Schilling ,  Christian Boeing

    IPC分类号： C07C1/20 ,  C07C11/09

    CPC分类号： C07C11/09 ,  C07C1/20

    摘要： A process for preparing isobutene by dissociation of MTBE, including: a) reaction of isobutene-containing hydrocarbon mixtures, with methanol, present in one or more methanol-containing streams, over acidic ion exchangers to give a stream, containing MTBE and TBA; b) separation of a stream containing MTBE and TBA, from a stream by distillation; c) dissociation of a stream in the gas phase over a heterogeneous catalyst to give a stream containing at least isobutene, methanol, MTBE and water and possibly TBA, d) separation of a stream by distillation to give a stream containing in each case more than 50% by mass of the amounts of methanol, TBA and water present in another stream and a stream containing isobutene, e) separation of water from stream to below 1% by mass by distillation to give a stream, f) total or partial recirculation of the methanol-containing stream.

    摘要翻译： 一种通过MTBE离解制备异丁烯的方法，包括：a）通过酸性离子交换剂使存在于一个或多个含甲醇的物流中的含异丁烯的烃混合物与甲醇反应，得到含有MTBE和TBA的物流; b）通过蒸馏从流中分离含有MTBE和TBA的物流; c）气相中的物流在非均相催化剂上的解离，得到至少含有异丁烯，甲醇，MTBE和水以及可能的TBA的物流，d）通过蒸馏分离物流，得到含有多于 50重量％的甲醇，TBA和存在于另一个流中的水和含有异丁烯的物流，e）通过蒸馏将水从流分离成低于1质量％，得到流，f）全部或部分再循环 含甲醇的流。

    WORK-UP OF A 3-METHYL-1-BUTENE-CONTAINING MIXTURE
    9.
    发明申请
    WORK-UP OF A 3-METHYL-1-BUTENE-CONTAINING MIXTURE 失效
    一种含3-甲基-1-丁烯的混合物的研究

    公开(公告)号：US20120116140A1

    公开(公告)日：2012-05-10

    申请号：US13375091

    申请日：2010-04-29

    申请人： Markus Winterberg ,  Alfred Kaizik ,  Armin Rix ,  Michael Grass ,  Wilfried Bueschken ,  Marc Becker

    发明人： Markus Winterberg ,  Alfred Kaizik ,  Armin Rix ,  Michael Grass ,  Wilfried Bueschken ,  Marc Becker

    IPC分类号： C07C5/00 ,  B01D3/36 ,  C07C7/04 ,  B01D3/14

    CPC分类号： C07C7/04 ,  C07C1/24 ,  C07C7/06 ,  C07C11/10

    摘要： The invention is a method for processing a mixture containing water, 3-methyl-1-butene and at least one other methylbutene. The method comprises primary distillation of the mixture, giving a gaseous primary overhead product containing methylbutene and water and a water-free primary bottom product containing 3-methyl-1-butene; condensation of the gaseous primary overhead product so as to give a condensate comprising a liquid aqueous phase and a liquid organic phase; separation of the condensate into a liquid aqueous phase and a liquid organic phase; discharge of the liquid aqueous phase; recirculation of the organic phase to the primary distillation; and finally secondary distillation of the water-free primary bottom product from the primary distillation so as to give a secondary overhead product comprising 3-methyl-1-butene and a secondary bottom product. The secondary overhead product obtained has a purity which enables it to be used directly as monomer or comonomer for preparing polymers or copolymers.

    摘要翻译： 本发明是一种处理含有水，3-甲基-1-丁烯和至少一种其它甲基丁烯的混合物的方法。 该方法包括对该混合物进行一次蒸馏，得到含有甲基丁烯和水的气态初级塔顶馏出物和含有3-甲基-1-丁烯的无水初级底物产物; 气态一级塔顶产物的冷凝，以产生包含液态水相和液体有机相的冷凝物; 将冷凝物分离成液态水相和液体有机相; 液体水相的排出; 将有机相再循环至初级蒸馏; 最后从初级蒸馏二次蒸馏无水初级底部产物，得到包含3-甲基-1-丁烯和二级底部产物的二级塔顶产物。 获得的二次塔顶产物具有使其能够直接用作制备聚合物或共聚物的单体或共聚单体的纯度。