摘要
汽液平衡时液相分子仍不断地从液相蒸发到汽相,那些从液相蒸发到汽相中的分子与滞留在液相中的同类分子相比具有较高的能量。通过考虑液相中分子能量的分布以及分子相互之间碰撞对汽液相分子分布的影响,从新的角度探讨了汽液二相平衡时汽液相组成与温度之间的相互关系。
At dynamic vapor liquid epuilibrium, some liquid molecules are always escaping from the liquid phase into the vapor phase. Those molecules,which can escape from the liquid phase into the vapor phase, possess higher energies than the molecules which still stay in the liquid phase, and that for molecules of kind i in the liquid phase, only on the condition that their energies are higher than ε_i , can they escape from the liquid phase into the vapor phase.
Through the consideration of the molecular energy distribution and of the molecular collisions, a new equation relating y to x and T is proposed.
This method was used to correlate and predict high (low) pressure vapor liquid y/x relations for nonpolar, polar ,azeotropic, associating,and hydrogen--containing systems. The results are satisfactory. Generally average absolute deviation of vapor composition,i, e. , is less than 0. 01.
出处
《高校化学工程学报》
EI
CAS
CSCD
1992年第3期189-195,共7页
Journal of Chemical Engineering of Chinese Universities
关键词
汽液平衡
温度
汽液相
Vapor liquid equilibria, Phase equilibria
