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    • 7. 发明公开
    • PROCESS FOR THE PRODUCTION OF ALKYLENE GLYCOL
    • VERFAHREN ZUR HERSTELLUNG VON ALKYLENGLYCOL
    • EP2630109A1
    • 2013-08-28
    • EP11770424.7
    • 2011-10-14
    • Shell Internationale Research Maatschappij B.V.
    • BASTINGS, Roel, Guillaume, Hubertus, LeonardusROTS, Arthur, Willibrordus, Titus
    • C07C31/20C07C29/12C07D301/10C07D317/38
    • C07C29/12Y02P20/584C07C31/202
    • The invention provides a process for the production of an alkylene glycol from an alkene comprising the steps of : i) converting the alkene to the corresponding alkylene oxide; ii) absorbing the alkylene oxide in an aqueous absorbent; iii) supplying the aqueous alkylene oxide at an inlet to a carboxylation reactor; iv) converting the aqueous alkylene oxide to the corresponding alkylene carbonate; v) converting the alkylene carbonate to the alkylene glycol; vi) removing water from the alkylene glycol to form a dehydrated alkylene glycol; vii) purifying the dehydrated alkylene glycol, wherein the start-up procedure comprises supplying water, carboxylation-hydrolysis catalyst and carbon dioxide streams to the carboxylation reactor and providing a start-up stream comprising the alkylene glycol at an injection point at or downstream of the inlet used in step iii) and recovering an alkylene glycol stream from the glycol distillation column.
    • 本发明提供一种生产亚烷基二醇的方法,包括将烯烃转化为相应的环氧烷; 吸收含水吸收剂中的环氧烷,然后汽提; 将氧化亚烷烃流供应到羧化反应器; 将烯化氧转化为相应的碳酸亚烷基酯; 将碳酸亚烷基酯转化成亚烷基二醇; 去除水以形成脱水的亚烷基二醇流; 并且纯化脱水的亚烷基二醇流,其中启动程序包括将水,羧化 - 水解催化剂和二氧化碳流供应到羧化反应器中,并且在该反应器的上游或下游的注入点提供包含亚烷基二醇的起始物流 用于将流体供应到羧化反应器并从乙二醇蒸馏塔回收亚烷基二醇物流的入口。