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    Process for fractionating water-containing crude amine mixtures from amine synthesis
    2.
    发明授权
    Process for fractionating water-containing crude amine mixtures from amine synthesis 有权
    从胺合成分馏含水粗胺混合物的方法

    公开(公告)号：US06986833B2

    公开(公告)日：2006-01-17

    申请号：US10272011

    申请日：2002-10-17

    申请人： Andreas Wölfert ,  Heinz Rütter ,  Stefan Rittinger ,  Mark Wehinger ,  Aurelie Alemany ,  Willi Schmidt

    发明人： Andreas Wölfert ,  Heinz Rütter ,  Stefan Rittinger ,  Mark Wehinger ,  Aurelie Alemany ,  Willi Schmidt

    IPC分类号： B01D3/14 ,  C07C209/84

    CPC分类号： C07D295/03 ,  C07C209/86 ,  C07D207/04 ,  C07D211/04 ,  Y10S203/20 ,  C07C211/04 ,  C07C211/08

    摘要： An amine-containing mixture containing one or more amines, water, low-boilers and optionally high-boilers is fractionated by a process having the steps (iii) and (iv) and optionally the steps (i), (ii) and (v): (i) a (first) low-boiler fraction is separated off from the amine-containing mixture by distillation, (ii) a (first) high-boiler fraction is separated off from the amine-containing mixture by distillation, (iii) the amine-containing mixture is extracted with sodium hydroxide solution, producing an aqueous, sodium-hydroxide-containing first phase and an aqueous-organic, amine-, (further) low-boiler- and possibly (further) high-boiler-containing second phase, (iv) the aqueous-organic second phase, is distilled, producing essentially anhydrous amine as bottom-phase take off or sidestream takeoff in the stripping part of the distillation column, an amine/water azeotrop as sidestream takeoff in the enrichment part of the column and a (further) low-boiler fraction as overhead takeoff, and recycling the amine/water azeotrop to the extraction step (iii), (v) the essentially anhydrous amine is further purified of fractionated.

    摘要翻译： 含有一种或多种胺，水，低锅炉和任选的高锅炉的含胺混合物通过具有步骤（iii）和（iv）和任选的步骤（i），（ii）和（v ）：（i）（第一）低沸点馏分通过蒸馏从含胺混合物中分离出来，（ii）通过蒸馏将（第一）高沸点级分馏分与含胺混合物分离，（iii） ）将含胺混合物用氢氧化钠溶液萃取，产生含氢氧化钠的含水氢氧化物的第一相和含水有机胺，（进一步）低沸点和可能（进一步）含高沸点的 第二相，（iv）蒸馏有机相第二相，在蒸馏塔的汽提部分中产生基本上无水的胺作为底部脱气或侧流起飞，在富集部分中作为侧流起飞的胺/水共沸物 的柱和另外的低沸点馏分作为架空起飞， 并将胺/水共沸物再循环至提取步骤（iii），（v）将基本上无水的胺进一步纯化分离。

    Process for fractionating water-containing crude amine mixtures from amine synthesis
    4.
    发明授权
    Process for fractionating water-containing crude amine mixtures from amine synthesis 失效
    从胺合成分馏含水粗胺混合物的方法

    公开(公告)号：US06821396B2

    公开(公告)日：2004-11-23

    申请号：US10272012

    申请日：2002-10-17

    申请人： Andreas Wolfert ,  Heinz Rütter ,  Stefan Rittinger ,  Mark Wehinger ,  Aurelie Alemany ,  Willi Schmidt

    发明人： Andreas Wolfert ,  Heinz Rütter ,  Stefan Rittinger ,  Mark Wehinger ,  Aurelie Alemany ,  Willi Schmidt

    IPC分类号： B01D314

    CPC分类号： C07D295/027 ,  C07D207/04 ,  C07D211/04 ,  C07D295/03 ,  Y10S203/20

    摘要： A mixture containing mixture one or more amines, water, low-boilers and high-boilers, is fractioned in a process wherein (i) low-boilers are separated from the mixture by distillation, (ii) high-boilers are separated from the mixture by distillation, (iii) the mixture is extracted with a sodium hydroxide solution to form an aqueous, sodium-hydroxide-containing first phase and an aqueous-organic, amine-containing second phase, and (iv) the aqueous-organic second phase is distilled to form an amine/water azeotrope and an essentially anhydrous amine, and the amine/water azeotrope is recycled to the extraction step (iii).

    摘要翻译： 将混合物中含有一种或多种胺，水，低锅炉和高锅炉的混合物在一个方法中进行分馏，其中（i）通过蒸馏将低沸点物与混合物分离，（ii）从混合物中分离出高锅炉 通过蒸馏，（iii）混合物用氢氧化钠溶液萃取以形成含氢氧化钠的第一相和含水有机胺的第二相，和（iv）含水有机相第二相为 蒸馏以形成胺/水共沸物和基本上无水的胺，并将胺/水共沸物再循环至提取步骤（iii）。