Modelling of equilibrium solubility of CO2 and H2S in aqueous diglycolamine (DGA) solutions

W. Hu, A. Chakma

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)523-525
Number of pages3
JournalThe Canadian Journal of Chemical Engineering
Volume68
Issue number3
DOIs
Publication statusPublished - Jun 1990
Externally publishedYes

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