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CN105148551A 环氧烷纯化方法和系统 无效 - 驳回 复审申请

环氧烷纯化方法和系统
Abstract:
用于纯化环氧乙烷的方法和系统，包括：将包含环氧乙烷的进料流(106)引入到热交换器(102)中以加热进料流，将加热的进料流在第一级下面进料到蒸馏设备(104)基部，从蒸馏设备中将杂质馏分作为来自位于蒸馏设备(104)上的顶取出部的蒸馏设备(104)的顶部离开流(116)移出，从蒸馏设备(104)中将基于环氧乙烷流的总重量为99.7重量％纯度的来自蒸馏设备的环氧乙烷流移出，以及从蒸馏设备(104)中将醛富集的馏分作为来自蒸馏设备(104)的底部流(122)移出，其中将所述醛富集的馏分直接进料到二醇反应器(123)。
Abstract(English):

Processes and systems for purifying ethylene oxide, including introducing a feed stream (106) including ethylene oxide to a heat exchanger (102) to heat the feed stream, feeding the heated feed stream to a distillation apparatus (104) base below a first stage, removing from the distillation apparatus an impurity fraction as a top exit stream (116) from the distillation apparatus (104) located at a top take-off on the distillation apparatus (104), removing from the distillation apparatus (104) an ethylene oxide stream (112) of 99.7 weight percent purity, based on the total weight of the ethylene oxide stream, from the distillation apparatus, and removing from the distillation apparatus (104) an aldehyde enriched fraction as a bottom stream (122) from the distillation apparatus (104), where the aldehyde enriched fraction is fed directly to a glycol reactor (123).

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