Etherification process
    2.
    发明授权
    Etherification process 失效
    醚化过程

    公开(公告)号:US06232509B1

    公开(公告)日:2001-05-15

    申请号:US09591520

    申请日:2000-06-09

    IPC分类号: C07C4109

    摘要: A process for the separation and recovery of methyl tertiary butyl ether from mixed C4/C5 streams, such as resulting from the co-production of methyl tertiary butyl ether and tertiary amyl methyl ether from the reaction of methanol with isobutene and isoamylenes in a mixed C4/C5 stream. In a distillation column reactor the reaction is carried out concurrently with distillation of the products from the unreacted materials. In the distillation little or no MTBE is carried overhead with the unreacted C4's, C5's and methanol by controlling the methanol concentration in said column to maintain substantially a methanol/C5 azeotrope in the overheads.

    摘要翻译: 从混合的C4 / C5流中分离和回收甲基叔丁基醚的方法,例如由甲醇与异丁烯和异戊烯在混合C4中的反应中共同生产甲基叔丁基醚和叔戊基甲基醚 / C5流。 在蒸馏塔反应器中,反应与来自未反应物质的产物蒸馏同时进行。 在蒸馏中,通过控制所述塔中的甲醇浓度,很少或没有MTBE与未反应的C4,C5和甲醇一起承载,从而在塔顶馏出物中维持基本上甲醇/ C5共沸物。

    Catalyst sampling device
    5.
    发明授权
    Catalyst sampling device 失效
    催化剂取样装置

    公开(公告)号:US4916956A

    公开(公告)日:1990-04-17

    申请号:US325960

    申请日:1989-03-20

    IPC分类号: G01N1/20

    CPC分类号: G01N1/20

    摘要: A system for exposing a sample to the interior of a reaction vessel has a pair of chambers interconnected by a passage. Each of the chambers may be isolated by valves with the outer chamber being removable. A sample holder is slidable between the chambers by a charging device and can be locked in place by rotation of the charging device. Flights on the interior of the passage provide guidance and facilitate locking.

    摘要翻译: 用于将样品暴露于反应容器内部的系统具有通过通道相互连接的一对室。 每个室可以通过阀隔离,其中外室是可移除的。 样品架可以通过充电装置在室之间滑动,并且可以通过充电装置的旋转而被锁定就位。 通道内部的航班提供指导并方便锁定。