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8 条记录 (耗时 0.013 秒)

    Pressure-tuned solid catalyzed heterogeneous chemical reactions
    1.
    发明申请
    Pressure-tuned solid catalyzed heterogeneous chemical reactions 失效
    压力调节固体催化的异质化学反应

    公开(公告)号：US20030073876A1

    公开(公告)日：2003-04-17

    申请号：US09940015

    申请日：2001-08-27

    发明人： Bala Subramaniam ,  Christopher James Lyon

    IPC分类号： C07C002/58 ,  C07C002/56 ,  C07C015/067 ,  C07C015/12

    CPC分类号： B01J31/4007 ,  B01J3/008 ,  B01J8/0207 ,  B01J8/0278 ,  B01J31/10 ,  B01J35/10 ,  B01J35/1014 ,  B01J35/1019 ,  B01J38/00 ,  B01J2038/005 ,  B01J2208/00628 ,  B01J2219/00202 ,  B01J2219/00213 ,  B01J2219/00231 ,  B01J2231/323 ,  B01J2231/52 ,  B01J2231/641 ,  C07C2/58 ,  C07C2531/10 ,  C10G29/205 ,  Y02P20/544 ,  Y02P20/584 ,  Y10S585/952

    摘要： Improved methods for conducting solid acid-catalyzed, near- or supercritical heterogeneous chemical reactions (e.g., alkylation reactions) are provided which give enhanced product yields and permit longer processing runs. The preferred reactions of the invention are carried out in the presence of a solid macroporous catalyst having a surface area of from about 50-400 m2/g and a pore size of from about 70-150 null. Product selectivity is enhanced by pressure-tuning of the reaction to promote production and separation of desired reaction products. In continuous processing, the chemical reaction may be interrupted before significant catalyst deactivation, followed by increasing reactor pressure and/or reducing reactor temperature to remove the accumulating coke; when the catalyst is regenerated, the original reaction conditions and reactant introduction may be resumed.

    摘要翻译： 提供了用于进行固体酸催化，近或超临界异质化学反应（例如烷基化反应）的改进方法，其提供增强的产物产率并允许更长的处理运行。 本发明的优选反应在表面积为约50-400m 2 / g和孔径为约70-150的固体大孔催化剂存在下进行。 产物选择性通过反应的压力调节来增强，以促进所需反应产物的产生和分离。 在连续加工中，化学反应可能在显着的催化剂失活之前中断，随后增加反应器压力和/或降低反应器温度以除去积聚的焦炭; 当再生催化剂时，可以恢复原始的反应条件和反应物的引入。

    Alkylation process using a sulfur-containing alkylation catalyst
    3.
    发明申请
    Alkylation process using a sulfur-containing alkylation catalyst 审中-公开
    使用含硫烷基化催化剂的烷基化方法

    公开(公告)号：US20030092948A1

    公开(公告)日：2003-05-15

    申请号：US10278143

    申请日：2002-10-22

    发明人： Emanuel Hermanus van Broekhoven ,  Pieter Bogaard

    IPC分类号： C07C015/12 ,  C07C002/04 ,  C07C002/24

    CPC分类号： B01J29/068 ,  B01J27/045 ,  B01J29/126 ,  B01J37/20 ,  C07C2/58 ,  C07C2521/04 ,  C07C2527/045 ,  C07C2529/12

    摘要： The invention relates to a process for alkylating a hydrcarbon feed which comprises contacting the hydrocarbon feed to be alkylated with an alkylation agent in the presence of a catalyst comprising a solid acid, a hydrogenation component consisting essentially of one or more Group VIII noble metals, and at least about 0.05 wt % of sulfur, based on the total weight of the catalyst composition. The invention further pertains to a catalyst suitable for said process and to a process for the preparation of said catalyst. The use of said catalyst results in a high conversion of the alkylation agent, a high C5null alkylate yield, and a good stability, while the selectivity has improved over the use of a comparable catalyst without sulfur.

    摘要翻译： 本发明涉及一种用于烷基化烃基进料的方法，该方法包括使烷基化的烃进料与烷基化试剂在催化剂存在下接触，所述催化剂包含固体酸，基本上由一种或多种VIII族贵金属组成的氢化组分和 至少约0.05重量％的硫，基于催化剂组合物的总重量。 本发明还涉及适用于所述方法的催化剂和制备所述催化剂的方法。 所述催化剂的使用导致烷基化试剂的高转化率，高的C5 +烷基化产率和良好的稳定性，而选择性比使用无硫的可比催化剂有所改善。

    Process for selective disproportionation of toluene and disproportionation and transalkylation of toluene and C9+ aromatics
    5.
    发明申请
    Process for selective disproportionation of toluene and disproportionation and transalkylation of toluene and C9+ aromatics 有权
    甲苯选择性歧化和甲苯和C9 +芳族化合物歧化和烷基转移的方法

    公开(公告)号：US20030130549A1

    公开(公告)日：2003-07-10

    申请号：US10277694

    申请日：2002-10-22

    申请人： China Petroleum & Chemical Corporation ,  Shanghai Research Institute of Petrochemical Technology

    发明人： Zaiku Xie ,  Weisheng Yang ,  Dejin Kong ,  Dongmao Zhu

    IPC分类号： C07C015/12

    CPC分类号： C07C15/08 ,  C07C6/123 ,  C07C6/126 ,  C07C15/04 ,  C07C2529/26 ,  C07C2529/44 ,  C07C2529/48 ,  C07C2529/78 ,  Y02P20/52

    摘要： The present invention relates to a process for the selective disproportionation of toluene and the disproportionation and transalkylation of toluene and C9null aromatics to mainly solve the problems in the prior arts of the great amount of recycle stream, high energy consumption or harsh requirement for the reaction feedstocks. The present invention has better solved these problems by the technical solution using a process for selective disproportionation of toluene to produce mixed xylenes containing a high concentration of p-xylene, and subsequent disproportionation and transalkylation of C9null aromatics and toluene to produce benzene and the mixed xylenes which are in the thermodynamic equilibrium. The process is applicable to the industrial production.

    摘要翻译： 本发明涉及甲苯的选择性歧化和甲苯和C9 +芳族化合物的歧化和烷基转移的方法，主要解决了现有技术中大量循环流的问题，高能耗或对反应原料的苛刻要求 。 本发明通过使用选择性歧化甲苯以产生含有高浓度对二甲苯的混合二甲苯的方法的技术解决方案更好地解决了这些问题，以及随后C9 +芳族化合物和甲苯的歧化和烷基转移以产生苯和混合二甲苯 它们处于热力学平衡状态。 该过程适用于工业生产。

    Aromatic alkylation process with direct recycle
    6.
    发明申请
    Aromatic alkylation process with direct recycle 审中-公开
    芳香烷基化方法直接回收

    公开(公告)号：US20040138511A1

    公开(公告)日：2004-07-15

    申请号：US10340082

    申请日：2003-01-10

    发明人： James Butler ,  James Merrill ,  Kevin Kelly

    IPC分类号： C07C005/22 ,  C07C015/12

    CPC分类号： C07C15/073 ,  C07C2/66 ,  C07C6/126 ,  C07C2529/06 ,  C07C2529/70 ,  Y02P20/544 ,  Y02P20/582 ,  Y02P20/584

    摘要： Process for the alkylation of an aromatic substrate with partial recycling of the alkylated product. A feedstock comprising an aromatic substrate and an alkylating agent is introduced into an alkylation reaction zone and into contact with a molecular sieve catalyst to produce an alkylation product which is withdrawn from the alkylation reaction zone and split into two portions. A first portion is recycled back to the alkylation reaction zone and supplied to the alkylation zone. A second portion is supplied to a suitable recovery zone for the separation of alkylated aromatic components from the unreacted aromatic substrate. The alkylation reaction zone may be operated under conditions in which the aromatic substrate is in the supercritical phase, and may comprise a plurality of catalyst beds wherein the recycled portion of the alkylation reaction product is subdivided into subproducts with one subproduct recycled to the inlet of the alkylation reaction zone and another subproduct introduced into the alkylation reaction zone between catalyst beds.

    摘要翻译： 烷基化产物的部分再循环烷基化方法。 将包含芳族底物和烷基化剂的原料引入烷基化反应区并与分子筛催化剂接触以产生从烷基化反应区取出并分成两部分的烷基化产物。 将第一部分循环回到烷基化反应区并供给至烷基化区。 将第二部分供应到合适的回收区，用于将烷基化芳族组分与未反应的芳族底物分离。 烷基化反应区可以在芳族底物处于超临界阶段的条件下操作，并且可以包括多个催化剂床，其中烷基化反应产物的再循环部分被再分成副产物，其中一个副产物被再循环到 烷基化反应区和引入催化剂床之间的烷基化反应区的另一个副产物。