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    • 40. 发明授权
    • INTEGRIERTES VERFAHREN ZUR HERSTELLUNG VON TRIOXAN AUS FORMALDEHYD
    • EP1915358B1
    • 2008-12-17
    • EP06778089.0
    • 2006-08-01
    • BASF SE
    • LANG, NevenSTRÖFER, EckhardSTAMMER, AchimFRIESE, ThorstenSIEGERT, MarkusHASSE, HansGRÜTZNER, ThomasBLAGOV, Sergej
    • C07D323/06
    • C07D323/06Y02P20/125
    • The invention relates to an integrated method for producing trioxane from formaldehyde. According to said method, a flow A1 containing water and formaldehyde as well as a recirculation flow B2 substantially composed of water and formaldehyde are delivered to a trioxane synthesis reactor in which the formaldehyde is reacted to trioxane such that a product flow A2 containing trioxane, water, and formaldehyde is obtained. Flow A2 and a recirculation flow D1 containing trioxane, water, and formaldehyde are fed to a first distillation column and are distilled at a pressure ranging from 0.1 to 2.5 bar such that a trioxane-enriched flow B1 and flow B2, which is essentially composed of water and formaldehyde, are obtained. Flow B1 is delivered to a second distillation column and is distilled at a pressure ranging from 0.2 to 17.5 bar such that a product flow substantially comprising trioxane and a flow C1 containing trioxane, water, and formaldehyde are obtained. Flow C1 is fed to a third distillation column and is distilled at a pressure ranging from 1 to 10 bar such that the recirculation flow D1 containing trioxane, water, and formaldehyde as well as a flow D2 that is substantially composed of water are obtained.
    • 本发明涉及由甲醛生产三恶烷的综合方法。 根据所述方法,将含有水和甲醛的流A1以及基本上由水和甲醛组成的再循环流B2输送到三烷合成反应器中,在该反应器中甲醛与三烷反应,从而产生含有三烷,水 ,并获得甲醛。 将含有三恶烷,水和甲醛的流动A2和再循环流D1送入第一蒸馏塔并在0.1-2.5巴的压力下蒸馏,使得富含三烷的流B1和流B2基本上由 水和甲醛。 将流B1输送至第二蒸馏塔并在0.2至17.5巴范围内的压力下蒸馏,使得获得基本上包含三烷和含三烷,水和甲醛的流C1的产物流。 将流C1供入第三蒸馏塔并在1-10巴的压力下蒸馏,从而获得包含三烷,水和甲醛的再循环流D1以及基本上由水组成的流D2。