公开(公告)号：US4788359A

公开(公告)日：1988-11-29

申请号：US78372

申请日：1987-07-27

申请人： Kurt Schuchardt ,  Harald Scholz ,  Erich Niehus ,  Harald Adam

发明人： Kurt Schuchardt ,  Harald Scholz ,  Erich Niehus ,  Harald Adam

IPC分类号： B01D53/70 ,  B01D53/04 ,  C07C17/00 ,  C07C17/156 ,  C07C17/38 ,  C07C17/389 ,  C07C19/045 ,  C07C67/00 ,  C07C17/15

CPC分类号： C07C17/156 ,  C07C17/389

摘要： 1,2-dichloroethane is continuously and completely removed and recovered from the off-gas obtained during the production of 1,2-dichloroethane by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and oxygen. The off-gas is initially contacted with active carbon, then incinerated at temperatures higher than 900.degree. C. and ultimately freed from hydrogen chloride and chlorine, and the active carbon is freed from 1,2-dichloroethane and regenerated by treating it with hot steam. More particularly, the off-gas loaded with the 1,2-dichloroethane and having a temperature of 1.degree. C. to 10.degree. C. is heated to a temperature at least 20.degree. C. higher than the respective dew point of water and contacted with the active carbon.

摘要翻译： 1,2-二氯乙烷通过使乙烯与氯化氢和氧进行氧氯化反应，在1,2-二氯乙烷生产过程中获得的废气中连续并完全除去并回收。 废气最初与活性炭接触，然后在高于900℃的温度下焚烧，最终从氯化氢和氯中除去，活性炭从1,2-二氯乙烷中脱除，并用热蒸汽处理再生 。 更具体地说，将负载有1,2-二氯乙烷并且具有1℃至10℃温度的废气加热到高于相应露点的水至少20℃并接触的温度 与活性炭。