USE OF THE APPROXIMATION FORMULA FOR THE PHASE-EQUILIBRIUM FUNCTION IN THE ANALYSIS OF PERIODIC DEPHLEGMATION DISTILLATION IN THE SEPARATION OF A BINARY MIXTURE

被引：0

作者：

Moshinskii, A. I. ^{[1
]}

机构：

[1] St Petersburg Chem Pharmaceut Acad, 14 Prof Popov Str, St Petersburg 193376, Russia

来源：

JOURNAL OF ENGINEERING PHYSICS AND THERMOPHYSICS | 2012年 / 85卷 / 04期

关键词：

mass transfer; equilibrium function; approximation; distillation;

D O I：

10.1007/s10891-012-0730-x

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A formula dependent on two parameters has been proposed for the approximation of typical phase-equilibrium functions. This formula can be used for analysis of a number of mass-transfer processes, in particular, distillation, rectification, adsorption, etc. Using the dependence proposed, a mathematical model of periodic distillation of a binary mixture in the presence of a dephlegmator has been analyzed; in the dephlegmator, partial condensation of the separated mixture occurs in a nonstationary mode under certain supplementary conditions. Analytical expressions describing this process and convenient for calculations have been obtained.

引用

页码：917 / 925

页数：9