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Phase equilibria in the system water‐methyldiethanolamine‐propane
Author(s) -
Carroll John J.,
Jou FangYuan,
Mather Alan E.,
Otto Frederick D.
Publication year - 1992
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690380405
Subject(s) - propane , chemistry , stripping (fiber) , aqueous solution , acid gas , amine gas treating , thermodynamics , work (physics) , hydrocarbon mixtures , hydrocarbon , phase (matter) , liquefied petroleum gas , mixing (physics) , inorganic chemistry , organic chemistry , materials science , physics , quantum mechanics , composite material
Aqueous solutions of alkanolamines are commonly used to strip acid gases (CO 2 H 2 S) from hydrocarbon streams. Processes for stripping acid gases from gaseous streams are well understood; however, the application to liquids is not as advanced. Experimental data available are scarce for systems containing aqueous amine solutions and the constituents of liquefied petroleum gases. To this end, new data are presented for the equilibria in the system propane–water–methyldiethanolamine (MDEA). A knowledge of the phase behavior in this system is required to model the equilibria encountered in the more complex systems of industrial importance. This work is a comprehensive study of the phase equilibria in the system propane–3 M MDEA, including vapor–liquid, liquid–liquid, and vapor–liquid–liquid equilibria. Experimental measurements were made for temperatures between 0 and 150°C and pressures up to 20 MPa. The data were correlated using the Stryjek‐Vera modification of the Peng‐Robinson equation of state. In addition, a composition‐dependent mixing rule was required to fit the data adequately.