公开(公告)号：US4912236A

公开(公告)日：1990-03-27

申请号：US231277

申请日：1988-08-12

申请人： Christof Palm ,  Otto H. Huchler ,  Ulrich-Dieter Pessel ,  Erdmann Hollborn ,  Dieter Schmitt

发明人： Christof Palm ,  Otto H. Huchler ,  Ulrich-Dieter Pessel ,  Erdmann Hollborn ,  Dieter Schmitt

IPC分类号： C07D307/08

CPC分类号： C07D307/08

摘要： Crude water-containing tetrahydrofuran is purified by distillation by a process in which the crude tetrahydrofuran is passed through three distillation columns, water being removed from the bottom of the first column, water-containing tetrahydrofuran being recycled from the top of the second column into the first column, the top product of the third column being recycled to the first column, a distillate being removed at the top of the first column, and pure tetrahydrofuran being distilled off from the bottom product of the second column, in the third column, and the pure tetrahydrofuran being removed from the side take-off of the third column.

摘要翻译： 通过蒸馏纯化粗含水四氢呋喃，其中粗四氢呋喃通过三个蒸馏塔，从第一塔的底部除去水，将含水四氢呋喃从第二塔的顶部再循环到 第一塔，第三塔的顶部产物被循环到第一塔，在第一塔的顶部除去的馏出物和在第三塔中从第二塔的底部产物蒸馏出的纯四氢呋喃和 将纯四氢呋喃从第三塔的侧馏分中除去。