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    • 3. 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a methanol/water mixture is added to a distillation column (1), an essentially methanol-comprising vapor stream is withdrawn at the top of the distillation column (1) and an essentially water-comprising bottom stream at the bottom of the distillation column (1), at least a portion of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。
    • 10. 发明申请
    • Process for Preparing Polymethylols
    • 制备多羟基睾酮的方法
    • US20110272270A1
    • 2011-11-10
    • US13144124
    • 2010-01-07
    • Stephan SchlitterMichael SteinigerStefan RittingerTilman SirchSteffen Maas
    • Stephan SchlitterMichael SteinigerStefan RittingerTilman SirchSteffen Maas
    • B01D3/36
    • C07C29/80C07C29/141C07C45/75C07C45/82C07C31/22C07C31/245C07C47/19
    • The present invention relates to a process for recovering components from a low boiler mixture which is obtained in the distillation of hydrogenation effluents from the preparation of polymethylols, by multistage distillation of the low boiler mixture comprising a tertiary amine, water, methanol, polymethylol of the formula (I) methylolalkanal of the formula (II) alcohol of the formula (III) and an alkanal with a methylene group in the α position to the carbonyl group, and in which each R is independently a further methylol group or an alkyl group having 1 to 22 carbon atoms or an aryl or aralkyl group having 6 to 22 carbon atoms, a first distillation stage involving separating the low boiler mixture into a higher-boiling, predominantly water-rich fraction and into a lower-boiling aqueous organic fraction comprising the tertiary amine, and the second distillation stage involving separating the aqueous organic fraction from the first distillation stage into a predominantly amine-containing fraction and a further amine-depleted fraction, wherein the tertiary amine is trimethylamine or triethylamine, and the bottom temperature in the second distillation stage is 110° C. and more.
    • 本发明涉及一种从低沸点混合物中回收组分的方法,该方法是从多羟甲基的制备中蒸馏氢化流出物获得的,通过多级蒸馏包含叔胺,水,甲醇,多羟甲基的低沸点混合物 式(I)式(II)醇的式(I)的羟甲基烷醛和式(III)的醇的亚烷基与在羰基的α位上具有亚甲基的链烷醛,其中每个R独立地是另外的羟甲基或具有 1至22个碳原子或具有6至22个碳原子的芳基或芳烷基,第一蒸馏阶段包括将低锅炉混合物分离成较高沸点,主要是富水部分和低沸点含水有机部分, 叔胺,第二蒸馏阶段将含水有机部分从第一蒸馏阶段分离成主要是胺 其中叔胺为三甲胺或三乙胺,第二蒸馏阶段的底部温度为110℃以上。