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106 条记录 (耗时 0.042 秒)

    Low Corrosion In Zeolite Oligomerisation
    31.
    发明申请
    Low Corrosion In Zeolite Oligomerisation 有权
    低沸点沸石低聚物

    公开(公告)号：US20080312484A1

    公开(公告)日：2008-12-18

    申请号：US11914643

    申请日：2006-06-16

    申请人： John S. Godsmark ,  Georges M.K. Mathys ,  Hubertus J. Beckers ,  Raphael F. Caers ,  Roger Eijkhoudt ,  Stephen H. Brown

    发明人： John S. Godsmark ,  Georges M.K. Mathys ,  Hubertus J. Beckers ,  Raphael F. Caers ,  Roger Eijkhoudt ,  Stephen H. Brown

    IPC分类号： C07C2/02

    CPC分类号： C07C2/12 ,  B01J29/7042 ,  B01J2219/00245

    摘要： Water reacts on molecular sieve catalysts used in oligomerisation reactions and forms oxygenated compounds, in particular organic acids that may cause corrosion problems downstream of the reactor, in particular in distillation tower overhead systems and downstream thereof. A lowering of the presence of water in the feed prior to contacting thereof with the molecular sieve brings a significant reduction in corrosion downstream. At the same time, it has a significant beneficial effect on catalyst activity and brings a significant extension of catalyst life. Lowering water in the feed is particularly effective when organic nitrogen-containing Lewis bases are present in the feed, even at low levels.

    摘要翻译： 水在低聚反应中使用的分子筛催化剂上反应，形成氧化化合物，特别是可能在反应器下游引起腐蚀问题的有机酸，特别是在蒸馏塔塔顶系统及其下游。 在与分子筛接触之前，进料中水的存在的降低导致下游腐蚀的显着降低。 同时对催化剂活性有显着的有益影响，催化剂寿命延长。 当有机含氮路易斯碱存在于进料中时，甚至在低水平下，降低进料中的水是特别有效的。

    Selective production of meta-diisopropylbenzene
    35.
    发明授权
    Selective production of meta-diisopropylbenzene 有权
    选择性生产间二异丙基苯

    公开(公告)号：US06765120B2

    公开(公告)日：2004-07-20

    申请号：US10318690

    申请日：2002-12-13

    申请人： William A. Weber ,  Charles Morris Smith ,  Francis S. Bryan ,  Stephen H. Brown ,  Jane C. Cheng

    发明人： William A. Weber ,  Charles Morris Smith ,  Francis S. Bryan ,  Stephen H. Brown ,  Jane C. Cheng

    IPC分类号： C07C522

    CPC分类号： C07C15/02 ,  C07C2/66 ,  C07C6/126 ,  C07C2529/70

    摘要： In a process for the selective production of meta-diisopropylbenzene, a C9+ aromatic hydrocarbon feedstock containing meta- and ortho-diisopropylbenzene is contacted with benzene under conversion conditions with a catalyst comprising a molecular sieve selected from the group consisting of zeolite beta, mordenite and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including the d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom. The contacting step selectively converts ortho-diisopropylbenzene in the feedstock to produce an effluent in which the ratio of meta-diispropylbenzene to ortho-diispropylbenzene is greater than that of the feedstock. The effluent is the fed to a separation zone for recovery of a product rich in meta-diisopropylbenzene.

    摘要翻译： 在选择性制备间二异丙基苯的方法中，将含有间 - 和邻 - 二异丙基苯的C 9+芳烃原料在转化条件下与苯接触，所述催化剂包含选自沸石β，丝光沸石和 具有12.4±0.25,6.9±0.15,3.57±0.07和3.42±0.07埃的d间距最大值的X射线衍射图的多孔结晶无机氧化物材料。 接触步骤选择性地转化原料中的邻二异丙基苯以产生其中间二异丙基苯与邻二丙基苯的比例大于原料的流出物。 将流出物进料至分离区，以回收富含间二异丙基苯的产物。

    Selective production of meta-diisopropylbenzene
    37.
    发明授权
    Selective production of meta-diisopropylbenzene 有权
    选择性生产间二异丙基苯

    公开(公告)号：US06518471B1

    公开(公告)日：2003-02-11

    申请号：US09891323

    申请日：2001-06-25

    申请人： William A. Weber ,  Charles Morris Smith ,  Francis S. Bryan ,  Stephen H. Brown ,  Jane C. Cheng

    发明人： William A. Weber ,  Charles Morris Smith ,  Francis S. Bryan ,  Stephen H. Brown ,  Jane C. Cheng

    IPC分类号： C07C522

    CPC分类号： C07C15/02 ,  C07C2/66 ,  C07C6/126 ,  C07C2529/70

    摘要： In a process for the selective production of meta-diisopropylbenzene, a C9+aromatic hydrocarbon feedstock containing meta- and ortho-diisopropylbenzene is contacted with benzene under conversion conditions with a catalyst comprising a molecular sieve selected from the group consisting of zeolite beta, mordenite and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including the d-spacing maxima at 12.4±0.25, 6.90±15, 3.57±0.07 and 3.42±0.07 Angstrom. The contacting step selectively converts ortho-diisopropylbenzene in the feedstock to produce an effluent in which the ratio of meta-diispropylbenzene to ortho-diispropylbenzene is greater than that of the feedstock. The effluent is the fed to a separation zone for recovery of a product rich in meta-diisopropylbenzene.

    摘要翻译： 在选择性制备间二异丙基苯的方法中，含有间 - 和邻 - 二异丙基苯的C 9+芳烃原料在转化条件下与苯接触，催化剂包含选自沸石β，丝光沸石和 具有包括在12.4±0.25,6.90±15,3.57±0.07和3.42±0.07埃处的d间距最大值的X射线衍射图的多孔结晶无机氧化物材料。 接触步骤选择性地转化原料中的邻二异丙基苯以产生其中间二异丙基苯与邻二丙基苯的比例大于原料的流出物。 将流出物进料至分离区，以回收富含间二异丙基苯的产物。

    Process for the production of symmetrical ethers from secondary alcohols
    39.
    发明授权
    Process for the production of symmetrical ethers from secondary alcohols 失效
    从仲醇生产对称醚的方法

    公开(公告)号：US5444168A

    公开(公告)日：1995-08-22

    申请号：US242989

    申请日：1994-05-16

    申请人： Stephen H. Brown

    发明人： Stephen H. Brown

    IPC分类号： C07C41/09

    CPC分类号： C07C41/09 ,  C07C2101/08

    摘要： Secondary alcohols are converted to symmetrical secondary alkyl ethers in high selectivity. The method employs acidic solid metallosilicate catalyst particles to accomplish the etherification by selective intermolecular dehydration of secondary alcohol to form di-secondary alkyl ethers. Preferably, the catalysts are solid shape selective aluminosilicate particles, especially zeolite such as ZSM-5, zeolite HY and zeolite Beta. Continuous separation of by-product olefin and ether during the etherification reaction improves selectivity.

    摘要翻译： 仲醇以高选择性转化为对称的仲烷基醚。 该方法采用酸性固体金属硅酸盐催化剂颗粒，通过仲醇的选择性分子间脱水来实现醚化，形成二仲烷基醚。 优选地，催化剂是固体形状选择性硅铝酸盐颗粒，特别是沸石，例如ZSM-5，沸石HY和沸石β。 醚化反应期间副产物烯烃和醚的连续分离提高了选择性。

    Process for preparing fluidized cracking catalysts from equilibrium fluidized cracking catalysts
    40.
    发明授权
    Process for preparing fluidized cracking catalysts from equilibrium fluidized cracking catalysts 失效
    从平衡流化裂化催化剂制备流化裂化催化剂的方法

    公开(公告)号：US5182243A

    公开(公告)日：1993-01-26

    申请号：US786663

    申请日：1991-11-01

    申请人： Stephen H. Brown ,  Roland von Ballmoos

    发明人： Stephen H. Brown ,  Roland von Ballmoos

    IPC分类号： B01J29/08 ,  B01J29/90 ,  C10G11/05

    CPC分类号： C10G11/05 ,  B01J29/084 ,  B01J29/90 ,  Y10S423/21

    摘要： A process for the reuse or recycling of FCC equilibrium catalysts is disclosed. The process involved treatment of a zeolite-containing equilibrium catalyst with clear seeds, a source of sodium oxide, a source of silica and water at elevated temperatures in order to destroy the Y originally present in the equilibrium catalyst and regrow zeolite Y in the pores of the matrix to a level no higher than 70 weight percent.

    摘要翻译： 公开了一种用于FCC平衡催化剂的再利用或再循环的方法。 该方法包括用澄清的种子处理含沸石的平衡催化剂，氧化钠源，二氧化硅和水源在升高的温度下，以破坏最初存在于平衡催化剂中的Y并且在 该基质的含量不得高于70％（重量）。