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    PREPARATION OF ISOBUTENE BY DISSOCIATION OF MTBE
    1.
    发明申请
    PREPARATION OF ISOBUTENE BY DISSOCIATION OF MTBE 有权
    通过MTBE的分离制备ISOBUTEN

    公开(公告)号：US20120142985A1

    公开(公告)日：2012-06-07

    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 ,  F28F1/00

    CPC分类号： C07C11/09 ,  C07C1/20

    摘要： The invention relates to a method for producing isobutene by cracking MTBE, wherein the following steps are carried out: a) MTBE synthesis; reacting isobutene-containing hydrocarbon mixtures (II) with methanol (III), contained in one or more methanol-containing streams (VIII, IX), on acidic ion exchangers obtaining a stream (IV) containing MTBE and TBA, b) MTBE separation; separating a stream (V) containing MTBE and TBA from stream (IV) by means of distillation, c) MTBE cracking; cracking the stream (V) on a heterogenic catalyst in the gas phase, thus obtaining a stream (VI) which contains at least isobutene, methanol, MTBE, water, and optionally TBA, d) isobutene separation; separating the stream (VI) by means of distillation, thus obtaining a stream (VII) containing more than 50 mass % of the amounts of methanol, TBA, and water contained in stream (VI), and a stream (XVII) containing isobutene, e) water separation; separating, water from the stream (VII) to below 1 mass % by means of distillation, thus obtaining a stream (VIII), f) recirculating; complete or partial recirculation of the methanol-containing stream (VIII) into the MTBE synthesis. The invention further relates to a tube bundle device comprising the following elements: i) tube bundle, ii) tube bottom, iii) deflection plates, iv) inner shell, iv) pressure bearing outer shell, comprising at least one inlet and outlet, vi) shell chamber, comprising a fluid releasing or absorbing heat, characterized in that the inner shell is connected to the deflection plates attached over the length of the tube bundle without a gap, or with a small gap, and is connected to the tube bottom, wherein the fluid present in the shell chamber encloses the inner shell on both sides.

    摘要翻译： 本发明涉及通过裂解MTBE生产异丁烯的方法，其中进行以下步骤：a）MTBE合成; 使含异丁烯的烃混合物（II）与含有一种或多种含甲醇的物流（VIII，IX）中的甲醇（III）在酸性离子交换剂上反应，得到含有MTBE和TBA的物流（Ⅳ），b）MTBE分离; 通过蒸馏从流（IV）分离含有MTBE和TBA的物流（V）; c）MTBE裂解; 在气相中的异源催化剂上裂解物流（V），从而获得至少含有异丁烯，甲醇，MTBE，水和任选的TBA的流（VI），d）异丁烯分离; 通过蒸馏分离料流（VI），从而获得含有大于50质量％的流（VI）中所含的甲醇，TBA和水量的流（VII）和含有异丁烯的料流（XVII） e）水分离; 通过蒸馏从水（VII）中将水分离成低于1质量％，从而获得流（VIII），f）再循环; 将含甲醇的物流（VIII）完全或部分再循环到MT​​BE合成中。 本发明还涉及一种管束装置，其包括以下元件：i）管束，ii）管底，iii）偏转板，iv）内壳，iv）承压外壳，包括至少一个入口和出口，vi ）壳体，其包括释放或吸收热量的流体，其特征在于，所述内壳连接到在所述管束的长度上连接的所述偏转板，而没有间隙或具有小间隙，并且连接到所述管底部， 其中存在于壳室中的流体在两侧封闭内壳。

    Preparation of isobutene by dissociation of MTBE
    2.
    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。