两级分离式超重力精馏实验研究  

Study on super two-phase separate gravity distillation

作　　者：张振翀 栗秀萍 刘有智 

机构地区：[1]山西省超重力化工工程技术研究中心,山西太原030051

出　　处：《现代化工》2010年第4期79-81,共3页Modern Chemical Industry

基　　金：高等学校博士学科专项科研基金(20060110003);山西省研究生创新基金资助项目(200611018);山西省高校开发项目(20091127)

摘　　要：在常压下以乙醇/水体系为研究对象进行了两级分离式超重力精馏中试。分别考察了超重力因子β、回流比R、原料液流量F对整个系统、精馏段和提馏段理论塔板数(NTP)的影响。在中试实验的基础上建立了超重力精馏的传质数学模型,并应用逐步回归法分析得出了对超重力精馏传质显著性影响由高到低依次为:馏出液摩尔分率、超重力因子、回流比、馏出比、进料摩尔分率。A super two-phase separate gravity distillation process with pilot scale is conducted at atmospheric pressure using ethanol/water solution system. The influencing factors of super gravity factor β, reflux ratio R and feedstock F on the number of theoretical plates （NTP） of the whole system, rectifying section and stripping section are studied, respectively. A mathematical mass transfer model of super gravity distillation is established based on the pilot test. The influencing factor on mass transfer of super gravity distillation is analyzed with the method of stepwise regression, and the effects of various factors are in the following descending order： mole distillate fraction Xd 〉 super gravity factorβ〉 reflux ratio R 〉 distillate ratio Q 〉 mole feedstock fraction xf.

关 键 词：超重力 精馏 传质 理论塔板数 

分 类 号：TQ028.13[化学工程]