Acta Chimica Sinica ›› 1979, Vol. 37 ›› Issue (2): 91-100. Previous Articles     Next Articles

有机溶剂脱水的相平衡研究

  

  1. 1. 上海化工学院;
    2. 上海感光胶片厂
  • 收稿日期:1977-12-26 出版日期:1979-06-15 发布日期:2013-06-03

STUDY ON THE PHASE EQUILIBRIA IN THE DEHYDRATION OF ORGANIC SOLVENTS

  1. 1. SHANGHAI COLLEGE OF CHEMICAL ENGINEERING;
    2. SHANGHAI FILM WORKS
  • Received:1977-12-26 Online:1979-06-15 Published:2013-06-03

The recovery of organic solvents containing water less than 7% from a miaturo of acetone, ethyl alcohol, ethyl acetate and water is impossible, according to the principle of rectification analysis, because of the formation of azeotropic distillates. Experiments show that the dehydration of these organic solvents could be made effective by the addition of anhydrous calcium chloride. Explaination is given by treating the data of salt effect on vapor-liquid equilibrium in terms of thermodynamics of solutions. The mochainsm of dehydration by anhydrous calcium chloride is discussed, and a suitable technique for the dehydration of organic solvents is provided.