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Solubilities of heavy hydrocarbons in compressed methane, ethane, and ethylene: Dew‐point temperatures for gas mixtures containing small and large molecules
Author(s) -
Kaul Bal K.,
Prausnitz John M.
Publication year - 1978
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.690240210
Subject(s) - chemistry , methane , solubility , naphthalene , molecule , ethylene , alkane , thermodynamics , dew , hydrocarbon , yield (engineering) , virial coefficient , organic chemistry , condensation , physics , catalysis
Solubilities of heavy hydrocarbons in compressed gases were measured in the region 50° to 170°C for hexadecane, bicyclohexyl, diphenylmethane, and 1‐methyl naphthalene and in the region 165° to 272°C for eicosane and squalane. Measurements were made in the pressure region 9 to 80 atm. The solubility data were reduced to yield second virial cross coefficients B 12 . To interpret the B 12 data, a square‐well potential was used; the characteristic size of the large molecule is given by the mean radius of gyration which takes into account the variety of molecular conformations. Calculated results give good agreement with new as well as previously published B 12 data. Illustrative calculations indicate how the results obtained here may be used to make dew‐point calculations in multicomponent systems containing both small and large molecules.