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1. 发明公开

EP0692481A1 PROCESS FOR PRODUCING TRIOXANE 失效
标题翻译：生产三氧杂环己烷的方法
公开(公告)号：EP0692481A1
公开(公告)日：1996-01-17
申请号：EP95906529.3
申请日：1995-01-27
申请人： POLYPLASTICS CO. LTD.
发明人： KASHIHARA, Osamu , KUROISHI, Takeo , HIRAGOORI, Motohito , AKIYAMA, Minoru , KASAI, Yuzo , FUKUI, Yuichi
IPC分类号： C07D323/06
CPC分类号： C07D323/00 , C07D323/06
摘要： A process for producing trioxane from an aqueous formaldehyde solution at a high distillation efficiency in an energy-saving manner, which comprises the following steps (i) to (iv): (i) the step of forming trioxane by passing a highly concentrated aqueous solution of formaldehyde through a reactor packed with a solid acid catalyst; (ii) the step of extracting the formed trioxane from the aqueous formaldehyde solution containing the same with a water-insoluble organic solvent having a boiling point higher than that of trioxane and incapable of forming an azeotrope therewith; (iii) the step of removing low-boiling substances contained in the organic solvent phase containing trioxane by distillation or evaporation; and (iv) the step of distilling the trioxane-containing organic solvent freed from the low-boiling substances, thereby obtaining trioxane from the top of the distillation column and returning the organic solvent from the bottom of the column to the step (ii).
摘要翻译：（i）〜（iv）中，以高蒸馏效率从甲醛水溶液制造三恶烷的方法，其包括以下工序（i）〜（iv）：（i）使高浓度水溶液的甲醛通过填充有固体酸催化剂的反应器; （ii）从含有甲醛的甲醛水溶液中，用沸点高于三恶烷的不溶于水的有机溶剂，不能与其形成共沸混合物，从中提取生成的三恶烷的步骤; （iii）通过蒸馏或蒸发除去含三恶烷的有机溶剂相中含有的低沸点物质的步骤; 和（iv）蒸馏除去低沸点物质的含三恶烷的有机溶剂，由此从蒸馏塔顶部获得三恶烷并将有机溶剂从塔底返回到步骤（ii）的步骤。

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