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    • 10. 发明申请
    • PROCESS FOR MANUFACTURING DIMETHYL CARBONATE
    • 生产二甲基碳酸酯的方法
    • WO2008099370A2
    • 2008-08-21
    • PCT/IB2008/050572
    • 2008-02-15
    • SABIC INNOVATIVE PLASTICS IP BVVIC FERNANDEZ, Ignacio
    • VIC FERNANDEZ, Ignacio
    • C07C68/00C07C68/06
    • C07C68/06C07C68/005C07C69/96
    • A method of forming a dialkyl carbonate stream, includes obtaining a byproduct stream from a diaryl carbonate formation reaction that has alkanol, residual dialkyl carbonate, and residual aromatic compound. This byproduct stream is introduced to a distillation column to produce an alkanol tops stream and a first dialkyl carbonate bottoms stream. The alkanol tops stream is reacted with oxygen, carbon monoxide, and catalyst to form a second dialkyl carbonate stream that is introduced to the distillation column. The alkanol tops stream from the column contains alkanol, dialkyl carbonate, and less than 20 ppm aromatic compound. The first dialkyl carbonate bottoms stream from the column contains dialkyl carbonate, water, aromatic compound, and less than 2,000 ppm alkanol and is introduced to a water separation device to produce a product dialkyl carbonate stream and a water stream.
    • 形成碳酸二烷基酯流的方法包括从具有链烷醇的碳酸二芳基酯形成反应获得副产物流,残留的碳酸二烷基酯和残余的芳族化合物。 将该副产物流引入蒸馏塔以产生烷醇塔顶料流和第一碳酸二烷基酯底部料流。 链烷醇顶部料流与氧气,一氧化碳和催化剂反应以形成引入蒸馏塔的第二碳酸二烷基酯料流。 来自塔的烷醇顶部料流包含链烷醇,碳酸二烷基酯和少于20ppm的芳族化合物。 来自塔的第一碳酸二烷基酯底部料流包含碳酸二烷基酯,水,芳族化合物和少于2,000ppm链烷醇,并且引入水分离装置以产生产物碳酸二烷基酯流和水流。