Low corrosion in zeolite oligomerisation
    1.
    发明授权
    Low corrosion in zeolite oligomerisation 有权
    沸石低聚中的低腐蚀性

    公开(公告)号:US07880046B2

    公开(公告)日:2011-02-01

    申请号:US11914643

    申请日:2006-06-16

    IPC分类号: C07C2/02

    摘要: Water reacts on molecular sieve catalysts used in oligomerization 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,进料中水分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。

    Low Corrosion In Zeolite Oligomerisation
    2.
    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

    IPC分类号: C07C2/02

    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。

    Purification of aromatic feedstock
    7.
    发明授权
    Purification of aromatic feedstock 有权
    芳香原料的纯化

    公开(公告)号:US09057025B2

    公开(公告)日:2015-06-16

    申请号:US13186039

    申请日:2011-07-19

    申请人: Stephen H. Brown

    发明人: Stephen H. Brown

    IPC分类号: C10G25/03 B01J29/06 B01J29/70

    摘要: The invention is a process for removing impurities from an aromatics stream and apparatus for the practice thereof, whereby trace olefins and dienes are removed from aromatic plant feedstocks using a reactor design that enables the product to be backmixed with the feedstock and that enables a feed/effluent heat exchanger.

    摘要翻译: 本发明是用于从芳族化合物流中除去杂质的方法及其实践的装置,其中使用能使产物与原料反混的反应器设计从芳族植物原料中除去痕量烯烃和二烯, 流出热交换器。