Prediction of the Condensation Behavior of Natural Gas: A Comparative Study of the Peng−Robinson and the Simplified-Perturbed-Hard-Chain Theory Equations of State

Autor:	Marianna E. Voulgaris, Jakob de Swaan Arons, Cor J. Peters
Rok vydání:	1998
Předmět:	Equation of state Chemistry Vapor pressure business.industry General Chemical Engineering Condensation Thermodynamics Binary number General Chemistry Industrial and Manufacturing Engineering Methane chemistry.chemical_compound Natural gas business Characteristic energy Bar (unit)
Zdroj:	Industrial & Engineering Chemistry Research. 37:1696-1706
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie970641b
Popis:	For the prediction of the condensation behavior of natural gas, one has to select an equation of state (EoS) which will be accurate in the temperature and pressure range of interest (10 < P/bar < 70 bar and 250 < T/K < 310). Another requirement of the selected EoS is that it easily can be adapted to a characterization procedure for the heavy-end fraction. For that purpose, two equations were tested: the Peng−Robinson (PR), which is one of the most applied cubic EoS, and the simplified-perturbed-hard-chain theory (SPHCT) equation, which is one of the simplest EoS based on sound statistical mechanical principles. In the underlying study, their predictive capabilities for the prediction of saturated vapor pressures of pure compounds and vapor/liquid equilibrium pressures for binary mixtures are compared. Only components present in natural gas are considered. In addition, new pure-component parameters for the SPHCT EoS for n-alkanes are evaluated. Also a method to find the characteristic energy for non-n-alk...
Databáze:	OpenAIRE
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