A segment contribution method for the vapor pressure of tall-oil chemicals

被引：19

作者：

Bokis, CP ^{[1
]}

Chen, CC ^{[1
]}

Orbey, H ^{[1
]}

机构：

[1] Aspen Technol, Cambridge, MA 02141 USA

来源：

FLUID PHASE EQUILIBRIA | 1999年 / 155卷 / 02期

关键词：

tall-oil; vapor pressure; segment-contribution method; oligomers; oleochemicals;

D O I：

10.1016/S0378-3812(98)00458-0

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A segment-contribution method for the estimation of Vapor pressure of large, oligomeric molecules encountered in oleochemical industry is described. The method makes use of segment composition, number of segments, and four parameters per segment to estimate vapor pressure as a function of temperature. For major components that occur in crude tall-oil (CTO) distillation, the optimum parameters are reported and the method is shown to be accurate. The open architecture of this segment contribution approach permits the use of new segments, or the treatment of whole molecules as segments if necessary. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：193 / 203

页数：11

共 6 条

[1]

Ambrose D., 1970, J. Chem. Thermodyn., V2, P631, DOI [10.1016/0021-9614(70)90038-8, 10.1016/0021-]

[2] ESTIMATION OF VAPOR-PRESSURES OF HEAVY LIQUID HYDROCARBONS CONTAINING NITROGEN OR SULFUR BY A GROUP-CONTRIBUTION METHOD [J].