Process for preparing isobutene from tert-butanol
    3.
    发明授权
    Process for preparing isobutene from tert-butanol 有权
    从叔丁醇制备异丁烯的方法

    公开(公告)号:US07235704B2

    公开(公告)日:2007-06-26

    申请号:US10868904

    申请日:2004-06-17

    IPC分类号: C07C1/00

    摘要: Isobutene is prepared by dissociating tert-butanol into isobutene and water over an acid ion-exchange resin arranged as a fixed bed in at least one reactor at a temperature of from 80 to 150° C. and at a pressure of from 5 to 25 bar to obtain a reaction mixture, separating the reaction mixture into isobutene, a by-product, water and at least one mixture of undissociated tert-butanol and water. The reactor is operated pseudo-isothermally, with a temperature difference between inflowing and outflowing streams of less than 15 K.

    摘要翻译: 异丁烯是通过在80至150℃的温度和5至25巴的压力下,在至少一个反应器中将叔丁醇离解成异丁烯和水,在酸性离子交换树脂上作为固定床排列的, 以获得反应混合物,将反应混合物分离成异丁烯,副产物,水和至少一种未离解的叔丁醇和水的混合物。 反应器假模拟运行,流入和流出之间的温度差小于15K。

    Apparatus and process for producing and delivering a foamable plastic
    10.
    发明申请
    Apparatus and process for producing and delivering a foamable plastic 审中-公开
    用于生产和输送可发泡塑料的装置和方法

    公开(公告)号:US20070003652A1

    公开(公告)日:2007-01-04

    申请号:US11504988

    申请日:2006-08-16

    申请人: Andreas Beckmann

    发明人: Andreas Beckmann

    IPC分类号: B29C47/96

    CPC分类号: B29C44/3446 B29C44/3449

    摘要: An apparatus and a process for producing and delivering a foamable plastic, especially for injecting a foamable plastic, containing a physical blowing agent, include a casing having an interior and a screw disposed in the interior for conveying a stream of a plastics melt through at least one subsection of the interior along a conveying zone to a closable orifice of the casing. A channel in the screw has a channel exit orifice for supplying the physical blowing agent in a region of the conveying zone, so that the physical blowing agent can be added to the plastics melt. A control unit for controlling the exiting of the physical blowing agent from the channel is disposed at the screw, outside the channel and in front of the channel exit orifice.

    摘要翻译: 用于生产和输送可发泡塑料的装置和方法,特别是用于注射含有物理发泡剂的可发泡塑料的发泡塑料包括:具有设置在内部的内部和螺钉的壳体,用于通过至少一个塑料熔体流输送 沿着输送区域的内部的一个子部分到壳体的可关闭的孔口。 螺杆中的通道具有用于在输送区域的区域内供给物理发泡剂的通道出口孔,从而可将物理发泡剂加入到塑料熔体中。 用于从通道控制物理发泡剂的排出的控制单元设置在螺杆,通道外部和通道出口孔的前方。