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    • 10. 发明申请
    • PROCESS FOR DISTILLATIVE WORKUP OF A METHANOL/WATER MIXTURE AND PROCESS FOR PREPARING ALKALI METAL METHOXIDES
    • 甲醇/水混合物的分解工艺及制备碱金属甲醇的方法
    • US20110313207A1
    • 2011-12-22
    • US13203504
    • 2010-02-17
    • Gerd KaibelTilman SirchRaimund FelderJosef Guth
    • Gerd KaibelTilman SirchRaimund FelderJosef Guth
    • B01D3/00C07C29/00
    • B01D3/009B01D1/2856B01D3/14C07C29/70Y02P20/127C07C31/30
    • The invention relates to a process for distillative workup of a methanol/water mixture, in which a methanol/water mixture is added to a distillation column (1), an essentially methanol-comprising vapor stream is withdrawn at the top of the distillation column (1) and an essentially water-comprising bottom stream at the bottom of the distillation column (1), at least a portion of the essentially methanol-comprising vapor stream is compressed and the compressed vapor stream is added as heating vapor to an evaporator (11) in which at least a portion of the methanol/water mixture to be separated is evaporated. The invention further relates to a process for preparing alkali metal methoxides in a reaction column (31) by adding methanol and alkali metal hydroxide solution to the reaction column (31), withdrawing alkali metal methoxide dissolved in methanol at the lower end of the reaction column (31) and withdrawing a methanol/water mixture at the upper end of the reaction column (31), and working up the methanol/water mixture by the process for distillative workup.
    • 本发明涉及一种用于甲醇/水混合物的蒸馏处理方法,其中将甲醇/水混合物加入到蒸馏塔(1)中,基本上含甲醇的蒸气流在蒸馏塔的顶部排出( 1)和在蒸馏塔(1)底部的基本上含水的底部流,至少部分基本上含甲醇的蒸气流被压缩,并将压缩的蒸气流作为加热蒸气加入到蒸发器(11 ),其中要分离的至少一部分甲醇/水混合物蒸发。 本发明还涉及通过向反应塔(31)中加入甲醇和碱金属氢氧化物溶液,在反应塔(31)的下端除去溶解在甲醇中的碱金属甲醇盐,在反应塔(31)中制备碱金属甲醇盐的方法 (31),并在反应塔(31)的上端取出甲醇/水混合物,并通过蒸馏处理方法处理甲醇/水混合物。