Premium
Solubility of CO 2 in water and NaCl solution in equilibrium with hydrate. Part II: Model calculation
Author(s) -
Sun Qiang,
Tian Huan,
Guo Xuqiang,
Liu Aixian,
Yang Lanying
Publication year - 2018
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22939
Subject(s) - solubility , hydrate , thermodynamics , chemistry , solubility equilibrium , clathrate hydrate , work (physics) , equation of state , phase equilibrium , thermodynamic equilibrium , aqueous solution , organic chemistry , physics , phase (matter)
In this work, a calculation model of CO 2 solubility in equilibrium with hydrate was developed on the basis of the Patel‐Teja equation of state and Chen‐Guo hydrate model. The solubility of CO 2 in water and NaCl solution in equilibrium with hydrate were calculated respectively under the temperature window of 273.95 K to 282.55 K and the pressure window of 2.0 MPa to 8.0 MPa. The comparisons between the calculated and experimental values show that the average absolute deviation percentages (AADP) are 2.12 % for the CO 2 /H 2 O system and 2.31 % for the CO 2 /NaCl/H 2 O system, respectively. It demonstrates that the model proposed in this work could well predict the solubility of CO 2 in NaCl solution in equilibrium with hydrate.