MODELING OF EQUILIBRIUM SOLUBILITY OF CO2 AND H2S IN AQUEOUS DIGLYCOLAMINE (DGA) SOLUTIONS

被引：23

作者：

HU, W ^{[1
]}

CHAKMA, A ^{[1
]}

机构：

[1] UNIV CALGARY,DEPT CHEM & PETR ENGN,CALGARY T2N 1N4,ALBERTA,CANADA

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1990年 / 68卷 / 03期

关键词：

CO[!sub]2[!/sub] solubility in diglycolamine; diglycolamine solvent; H[!sub]2[!/sub]S solubility in diglycolamine;

D O I：

10.1002/cjce.5450680327

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Information on acid gas solubility in solvents utilized is needed for the design of gas plants. A mathematical model for the prediction of equilibrium solubility of CO2 and H2S in aqueous 2‐amino‐2‐(ethoxy)ethanol DGA solutions is presented. The equilibrium constants, K1 and K2, representing a simple proton transfer reaction and the carbamate formation reaction, respectively, were found to be functions of temperature and free acid gas concentration. In addition, K2, was affected by DGA concentration as well. Model predictions agree favourably with experimental data. Copyright © 1990 Canadian Society for Chemical Engineering

引用

页码：523 / 525

页数：3