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    • 2. 发明申请
    • PROCESS FOR PREPARING DIARYL CARBONATES
    • 制备二氧化碳的方法
    • WO2011067263A1
    • 2011-06-09
    • PCT/EP2010/068568
    • 2010-11-30
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.NISBET, Timothy MichaelVAPORCIYAN, Garo GarbisVROUWENVELDER, Cornelis Leonardus Maria
    • NISBET, Timothy MichaelVAPORCIYAN, Garo GarbisVROUWENVELDER, Cornelis Leonardus Maria
    • C07C68/06C07C69/96B01D3/00
    • C07C68/06B01D3/009Y02P20/127C07C69/96
    • The invention relates to a process for preparing a diaryl carbonate from a dialkyl carbonate and an aryl alcohol comprising: (a) introducing dialkyl carbonate and aryl alcohol into a first reactive distillation column; (b) recovering from the first reactive distillation column a top stream comprising dialkyl carbonate and alkyl alcohol and a bottom stream comprising alkyl aryl carbonate, aryl alcohol and dialkyl carbonate; (c) introducing the bottom stream from the first reactive distillation column into a second reactive distillation column; (d) recovering from the second reactive distillation column a top stream comprising dialkyl carbonate and a bottom stream comprising alkyl aryl carbonate, diaryl carbonate and aryl alcohol; (e) introducing the bottom stream from the second reactive distillation column into a third reactive distillation column; and (f ) recovering from the third reactive distillation column a top stream comprising aryl alcohol and a bottom stream comprising diaryl carbonate, wherein the top stream from the third reactive distillation column is recycled to the second reactive distillation column.
    • 本发明涉及一种由碳酸二烷基酯和芳基醇制备碳酸二芳基酯的方法,该方法包括:(a)将碳酸二烷基酯和芳基醇引入第一反应蒸馏塔; (b)从第一反应蒸馏塔回收包含碳酸二烷基酯和烷基醇的顶部料流和包含碳酸烷基芳基酯,芳基醇和碳酸二烷基酯的塔底料流; (c)将来自第一反应蒸馏塔的塔底物流引入第二反应蒸馏塔; (d)从第二反应蒸馏塔回收包含碳酸二烷基酯和包含碳酸烷基芳基酯,碳酸二芳基酯和芳基醇的塔底料流; (e)将来自第二反应蒸馏塔的塔底物流引入第三反应蒸馏塔; 和(f)从第三反应蒸馏塔回收包含芳基醇的顶部料流和包含碳酸二芳基酯的塔底料流,其中来自第三反应蒸馏塔的顶部料流再循环到第二反应蒸馏塔。