Phase equilibria of alkanes in natural gas systems. 1: Alkanes in methane
- Georgia Inst. of Technology, Atlanta, GA (United States)
The authors report the application of a new chromatographic technique to measure capacity factors for several n-alkanes (C[sub 7]H[sub 16] to C[sub 36]H[sub 74]) in methane in the range 293.2--423.2 K, and at 120--240 bar. Regular solution theory is used to characterize the stationary phase to permit the calculation of infinite dilution activity coefficients, [gamma][sub i][sup [infinity]], this allows the conversion of the capacity factors to estimates of the solubility of the n-alkanes in methane. The solubility results are in good agreement with those data available from more conventional techniques. However, the new method permits investigations of much lower values of the solubility, especially for heavier hydrocarbon solutes, typically inaccessible with other methods. The capacity factor data can also be differentiated to yield directly partial molar volumes and partial molar enthalpies at infinite dilution. The phase equilibrium information obtained with this method provides valuable data for understanding size differences, as well as for helping to ameliorate solid deposition problems of natural gas companies.
- OSTI ID:
- 6572956
- Journal Information:
- Journal of Chemical and Engineering Data; (United States), Journal Name: Journal of Chemical and Engineering Data; (United States) Vol. 40:1; ISSN JCEAAX; ISSN 0021-9568
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
033000* -- Natural Gas-- Properties & Composition
ALKANES
DESIGN
ENERGY SOURCES
ENERGY SYSTEMS
FLUIDS
FOSSIL FUELS
FOULING
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
METHANE
MOLECULAR WEIGHT
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHASE STUDIES
SOLUBILITY
SOLVENT PROPERTIES
WAXES