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16 条记录 (耗时 0.02 秒)

    Process for manufacturing a tertiary alkyl ether by reactive distillation
    12.
    发明授权
    Process for manufacturing a tertiary alkyl ether by reactive distillation 失效
    通过反应蒸馏制备叔烷基醚的方法

    公开(公告)号：US4847430A

    公开(公告)日：1989-07-11

    申请号：US171339

    申请日：1988-03-21

    申请人： Dang Vu Quang ,  Pierre Amigues ,  Jean-Ferdinand Gaillard ,  Jacques Leonard ,  Jean-Luc Nocca

    发明人： Dang Vu Quang ,  Pierre Amigues ,  Jean-Ferdinand Gaillard ,  Jacques Leonard ,  Jean-Luc Nocca

    IPC分类号： C07B61/00 ,  B01D3/00 ,  B01J8/04 ,  B01J31/10 ,  C07C41/00 ,  C07C41/06 ,  C07C41/42 ,  C07C43/04 ,  C07C67/00

    CPC分类号： C07C41/06 ,  B01D3/009 ,  B01J8/0453 ,  C07C41/42 ,  Y02P20/127 ,  Y10S203/06

    摘要： The invention concerns a process for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with an isobutene-containing hydrocarbon mixture.This process is characterized by the steps of:introducing the reactants into a reaction-distillation zone containing at least two superposed and non-contiguous fixed beds (2a, 2b) of catalyst of the sulfonated resin type, wherein passage-ways are provided for a vapor phase, at least one distillation tray (4a), at least one liquid redistribution tray (5),maintaining distillation conditions in said zone so as to have a descending liquid phase and an ascending vapor phase,maintaining a continuous liquid phase in the lower part of said beds,discharging a vapor phase containing a high proportion of unconverted hydrocarbons from the top (8) of said zone, andwithdrawing a liquid phase of high MTBE content from the bottom (10) of said zone.

    摘要翻译： 本发明涉及通过使甲醇与含异丁烯的烃混合物反应制备甲基叔丁基醚（MTBE）的方法。 该方法的特征在于以下步骤：将反应物引入含有至少两个磺化树脂类型的催化剂的重叠和不连续的固定床（2a，2b）的反应 - 蒸馏区，其中为 蒸气相，至少一个蒸馏塔板（4a），至少一个液体再分配托盘（5），保持所述区域中的蒸馏条件以具有下降的液相和上升的气相，将下一个液相保持在下部 所述床的一部分，从所述区域的顶部（8）排出含有高比例未转化烃的气相，并从所述区域的底部（10）排出高MTBE含量的液相。

    Scratch-suppressing scanning apparatus with aspherical lens
    15.
    发明授权
    Scratch-suppressing scanning apparatus with aspherical lens 失效
    具有非球面透镜的刮擦式扫描装置

    公开(公告)号：US5502302A

    公开(公告)日：1996-03-26

    申请号：US304556

    申请日：1994-09-12

    申请人： Jacques Leonard

    发明人： Jacques Leonard

    IPC分类号： B41J2/44 ,  G02B3/04 ,  G03B27/50 ,  H04N1/00 ,  H04N1/028 ,  H04N1/10 ,  H04N1/193 ,  H01J3/14

    CPC分类号： H04N1/02835 ,  G02B3/04 ,  H04N1/00795 ,  H04N1/02815 ,  H04N1/1008 ,  H04N1/193 ,  H04N2201/0404

    摘要： A scanning apparatus for linewise reproducing an image on one face of a transparent image carrier onto light-sensitive means, which comprises support means (10) defining a support surface for the image carrier (12), an elongated light source (21b), a rod-like aspherical lens (23) disposed between said light source (21b) and said support means (10) for focussing said elongated light source onto an image carrier located on said support means, the characteristics of said lens (23) and its position with respect to said support means being such that the illuminating angle (.alpha.) of an image carrier on said support means (10) is at least 20 angular degrees and that light intensity variations over said angle are smaller than 15%, and an imaging lens (26) for forming an image of a scanned line (24) of an image on said carrier onto said light-sensitive means.

    摘要翻译： 一种用于将透明图像载体的一个面上的图像线路地再现到感光装置上的扫描装置，其包括限定图像载体（12）的支撑表面的支撑装置（10），细长光源（21b）， 设置在所述光源（21b）和所述支撑装置（10）之间的棒状非球面透镜（23），用于将所述细长光源聚焦到位于所述支撑装置上的图像载体上，所述透镜（23）的特性及其位置 相对于所述支撑装置使得所述支撑装置（10）上的图像载体的照明角（α）至少为20度角，并且所述角度上的光强度变化小于15％，并且成像透镜 （26），用于将所述载体上的图像的扫描线（24）的图像形成到所述感光装置上。

    Process for purifying a C.sub.4 and/or C.sub.5 hydrocarbon cut containing water and dimethyl ether as impurities
    16.
    发明授权
    Process for purifying a C.sub.4 and/or C.sub.5 hydrocarbon cut containing water and dimethyl ether as impurities 失效
    用于纯化含有水和二甲醚作为杂质的C4和/或C5烃馏分的方法

    公开(公告)号：US4474647A

    公开(公告)日：1984-10-02

    申请号：US371341

    申请日：1982-04-23

    申请人： Lionel Asselineau ,  Jacques Leonard ,  Jean Chodorge ,  Jean Gaillard

    发明人： Lionel Asselineau ,  Jacques Leonard ,  Jean Chodorge ,  Jean Gaillard

    IPC分类号： C07C7/04 ,  C07C7/05

    CPC分类号： C07C7/05 ,  C07C7/04

    摘要： A C.sub.4 and/or C.sub.5 olefinic hydrocarbon cut, containing dimethyl ether and water as impurities, in a relative proportion of dimethyl ether to water of at most 5:1, is purified in a distillation zone where it is introduced at an intermediate level, distant from the top or from the bottom thereof by at least 3 theoretical plates, optionally with a stripping gas, and separated into a overhead fraction comprising an aqueous liquid phase and a hydrocarbon liquid phase at least partially recycled as reflux to the upper part of the distillation zone, and a bottom fraction formed of the purified C.sub.4 and/or C.sub.5 olefinic cut.

    摘要翻译： 将二甲醚和水作为杂质的C4和/或C5烯烃烃馏分在二甲醚与水的相对比例至多为5:1的蒸馏区进行纯化，在蒸馏区中将其以中间水平 从顶部或底部至少3个理论塔板，任选地带有汽提气体，并分离成包含水性液相和烃液相的塔顶馏分，其至少部分地作为回流再循环到蒸馏的上部 区和由纯化的C4和/或C5烯烃切割形成的底部馏分。