DETERMINATION OF THE AVERAGE MOLECULAR-WEIGHT OF PETROLEUM CUTS BY VAPOR-PRESSURE DEPRESSION

被引：29

作者：

BLONDELTELOUK, A

LOISELEUR, H

BARREAU, A

BEHAR, E

JOSE, J

机构：

[1] UNIV LYON 1,CHIM ANALYT LAB 1,F-69622 VILLEURBANNE,FRANCE

[2] INST FRANCAIS PETR,SERV PHYSICOCHIM APPL,F-92000 RUEIL MALMAISON,FRANCE

来源：

FLUID PHASE EQUILIBRIA | 1995年 / 110卷 / 1-2期

关键词：

EXPERIMENTS; METHOD; AVERAGE MOLECULAR WEIGHT; VLE LOW PRESSURE; HYDROCARBONS;

D O I：

10.1016/0378-3812(95)02760-C

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The authors have constructed a static apparatus for the determination of the average molecular weight of petroleum cuts, by the vapor pressure depression method, also called tonometry. The solvent vapor pressure decrease, which appears when a compound is added in small quantities, is approximately proportional to the solute mole fraction. The average molecular weight of real petroleum cuts is given with a relative error of less than 2%. This error mainly results from the estimation method of the activity coefficients in the solution corresponding to the pseudobinary system ''petroleum cut + solvent''.

引用

页码：315 / 339

页数：25

共 10 条

[1]

AIM K, 1978, FLUID PHASE EQUILIBR, V2, P199

[2]

ALESSI P, 1986, FLUID PHASE EQUILIBR, V29, P249

[3] DETERMINATION OF ACTIVITY COEFFICIENTS FROM TOTAL PRESSURE MEASUREMENTS [J].