Process for preparation of ethylene glycol

A process for the preparation of ethylene glycol, the process comprising the steps of: a) supplying a first gas composition comprising ethylene oxide and carbon dioxide to an ethylene oxide absorber and passing the gas composition upward through an absorption section; b) supplying a lean absorbent t...

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Bibliographic Details
Main Authors WARD GREGORY JOHN, BASTINGS ROEL GUILLAUME HUBERTUS LEONARDUS, BLACK JESSE RAYMOND, EMBORSKY CHRISTOPHER P
Format Patent
LanguageChinese
English
Published 19.08.2022
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:A process for the preparation of ethylene glycol, the process comprising the steps of: a) supplying a first gas composition comprising ethylene oxide and carbon dioxide to an ethylene oxide absorber and passing the gas composition upward through an absorption section; b) supplying a lean absorbent to the top of the absorption section and passing the lean absorbent downward through the absorption section; c) intimately contacting the gas composition with a lean absorbent on trays in the absorption section in the presence of one or more catalysts to produce a rich absorbent stream comprising ethylene glycol and ethylene carbonate; d) withdrawing the rich absorbent from the absorber; and e) withdrawing a second gas composition from the top of the absorber. The first gas composition comprises 1 to 7 mol% ethylene oxide. The second gas composition comprises 1 to 10 mol% carbon dioxide. And the temperature of the first gas composition is 60 DEG C to 160 DEG C. 一种用于制备乙二醇的方法，所述方法包含以下步骤：a)将包含环氧乙烷和二氧化碳的第一气体组合物供应至环氧乙烷吸收
Bibliography:Application Number: CN202180008520