Apparatus, Systems, and Methods for Purification of Isocyanate Mixtures
    1.
    发明申请
    Apparatus, Systems, and Methods for Purification of Isocyanate Mixtures 有权
    用于纯化异氰酸酯混合物的装置,系统和方法

    公开(公告)号:US20110178328A1

    公开(公告)日:2011-07-21

    申请号:US13063817

    申请日:2009-10-01

    IPC分类号: B01D3/14 C07C265/00

    摘要: The present disclosure relates, according to some embodiments, to apparatus, systems, and/or methods for fractionating a feed mixture comprising, for example, one or more isocyanates, light components, solvents and/or heavier components. In some embodiments, fractionating an isocyanate feed mixture may comprise distilling the feed mixture in a non-adiabatic fractionating apparatus comprising a prefractionating section and/or column and a main section and/or column, which comprises a rectification section, a side section, and a stripping section. For example, isocyanates may be separated from light component(s), solvent(s) and/or heavier component(s). A fractionating apparatus may be configured and arranged, in some embodiments, as a dividing wall column. According to some embodiments of the disclosure, apparatus, systems, and/or methods may be energy efficient and/or may have a broad operating range.

    摘要翻译: 根据一些实施方案,本公开涉及用于分馏包含例如一种或多种异氰酸酯,轻组分,溶剂和/或较重组分的进料混合物的设备,系统和/或方法。 在一些实施方案中,分馏异氰酸酯进料混合物可以包括将进料混合物蒸馏在包括初步分馏段和/或塔以及主段和/或塔的非绝热分馏装置中,该分离分馏装置包括整流段,侧段和 剥离部分。 例如,异氰酸酯可以与轻组分,溶剂和/或较重组分分离。 在一些实施例中,分馏装置可以被配置和布置为分隔壁塔。 根据本公开的一些实施例,设备,系统和/或方法可以是能量效率的和/或可以具有广泛的操作范围。

    Ethylene recovery in direct-oxidation ethylene oxide processes
    8.
    发明授权
    Ethylene recovery in direct-oxidation ethylene oxide processes 失效
    乙烯回收直接氧化环氧乙烷工艺

    公开(公告)号:US5233060A

    公开(公告)日:1993-08-03

    申请号:US930249

    申请日:1992-08-13

    CPC分类号: C07D301/32 C07D301/10

    摘要: In a direct-oxidation ethylene oxide process of the type comprising a) reacting a feed gas stream including ethylene and a commercially-pure oxygen in one or more reactors and b) absorbing out ethylene oxide from the product stream from the one or more reactors in a first absorption zone, the improvement comprising recovering unreacted ethylene from an ethylene-rich argon purge gas stream via an absorber and a stripper in combination, recycling the recovered ethylene to the feed gas stream, and purging an ethylene-lean argon purge gas stream.

    摘要翻译: 在直接氧化环氧乙烷方法中,包括:a)在一个或多个反应器中使包含乙烯的进料气流与商业纯氧反应,和b)从来自一个或多个反应器的产物流中吸收环氧乙烷 第一吸收区,其改进包括从富含乙烯的氩吹扫气流中经由吸收器和汽提塔组合回收未反应的乙烯,将回收的乙烯循环到进料气流中,以及吹扫贫乙烯的氩吹扫气流。