公开(公告)号：US5500097A

公开(公告)日：1996-03-19

申请号：US364996

申请日：1994-12-28

申请人： Shinji Yamamoto ,  Kazutoshi Itoyama ,  Seiichi Fujimaki

发明人： Shinji Yamamoto ,  Kazutoshi Itoyama ,  Seiichi Fujimaki

IPC分类号： B01D3/14 ,  C02F1/04 ,  C07C17/38 ,  B01D3/06 ,  C02F1/06

CPC分类号： B01D3/146 ,  C02F1/048 ,  C07C17/38 ,  C07C17/383

摘要： The present invention provides a method for removing an organic compound in water at a high efficiency by separating an organic compound, particularly such an organic chlorine compound as 1,2-dichloroethane, carbon tetrachloride and chloroform dissolved in water or forming two liquid phases with water from a water phase, by the steps of:(i) charging water containing an organic compound into a first distillation column for conducting distillation or steam distillation to take the organic compound and water out of the top of the first distillation column and to obtain a bottom liquor containing the organic compound at a lower content from the bottom of the first distillation column, and(ii) charging the bottom liquor of the first distillation column into a second distillation column operated at a pressure lower than that in the first distillation column for conducting distillation, preferably flashing under reduced pressure, to take a gas distillate containing a large amount of the organic compound out of the top of the second distillation column and to obtain a bottom liquor containing the organic compound at such a content as to be lower than the organic compound content in the charged liquor from the bottom of the second distillation column.

摘要翻译： 本发明提供了通过分离有机化合物，特别是有机氯化合物如1,2-二氯乙烷，四氯化碳和氯仿溶解在水中或与水形成两个液相，从而高效除去水中有机化合物的方法。 从水相中，通过以下步骤：（i）将含有有机化合物的水加入到用于进行蒸馏或蒸汽蒸馏的第一蒸馏塔中以将有机化合物和水从第一蒸馏塔的顶部排出，并获得 含有来自第一蒸馏塔底部的含量较低的有机化合物的底液，和（ii）将第一蒸馏塔的底液装入第二蒸馏塔中，该第二蒸馏塔的压力低于第一蒸馏塔中的压力 进行蒸馏，优选在减压下闪蒸，以取出含有大量组分的气体馏出物 并且获得含有有机化合物的底液的含量低于第二蒸馏塔底部的带电液体中的有机化合物含量。