萃取精馏分离乙烷/乙烯的溶剂  

SOLVENTS FOR EXTRACTIVE DISTILLATION TO SEPARATE ETHANE/ETHYLENE

作　　者：易波[1] 许峥[1] 雷志刚[1] 刘宇星[1] 周荣琪[1] 段占庭[1] 

机构地区：[1]清华大学化工系,北京100084

出　　处：《化工学报》2001年第6期549-552,共4页CIESC Journal

摘　　要：The Solvents for extractive distillation to separate ethane/ethylene are studied and screened.Infinite relative volatility and infinite selectivity of 11 solvents with dipole moment from 0 to 11.36 are determined by gas stripping,which draws the conclusion that the selectivity of the solvent increases with its polarity.Two solvents, ACN and DMF, which have higher selectivity,are modified by adding water and salt, respectively.It is found that the effect of separation improves after modification, but the improvement is limited.The Solvents for extractive distillation to separate ethane/ethylene are studied and screened.Infinite relative volatility and infinite selectivity of 11 solvents with dipole moment from 0 to 11.36 are determined by gas stripping,which draws the conclusion that the selectivity of the solvent increases with its polarity.Two solvents, ACN and DMF, which have higher selectivity,are modified by adding water and salt, respectively.It is found that the effect of separation improves after modification, but the improvement is limited.

关 键 词：萃取精馏 乙烷 乙烯 溶剂 选择度 分离 

分 类 号：TQ221.211[化学工程—有机化工] TQ028.13