惰性气体对分子蒸馏过程的影响  

Effect of inert gas on molecular distillation process

作　　者：王毅[1] 张旭斌[2] 李淑芬[2] 

机构地区：[1]天津高等医学专科学校,天津300222 [2]天津大学化工学院,天津300072

出　　处：《天津化工》2007年第4期30-32,共3页Tianjin Chemical Industry

摘　　要：本文采用基于Boltzmann方程的Bhatnagar-Gross-Krook模型方程,建立了计算多组分稀薄气体流动的数学模型和求解方法。应用该模型对一维蒸发和冷凝问题进行了数值模拟,考察了惰性气体存在对该过程的影响,着重讨论了蒸发温度、冷凝温度、惰性气体分压以及蒸发面和冷凝面之间的距离等因素对分离因数的影响。On basis of the Bhatnagar-Gross-Krook equation, a new scheme for multi-component flow calculations between two closed surfaces of evaporation and condensation is developed. It is used to simulate the vapor behaviors DBP-DBS mixture system in the presence of an inert gas. The effects of evaporation temperature, condensation temperature, inert gas pressure and distance between evaporation and condensation surfaces on the separation factor are discussed.

关 键 词：分子蒸馏 BGK方程 数值模拟 稀薄气体 

分 类 号：TQ028[化学工程]