Phase Equilibrium Calculations for Semicontinuous Mixtures Subject to Gravitational Fields

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• 作者：Rogé ; rio O. Espó ; sito ; Marcelo Castier ; and Frederico W. Tavares
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2000
• 出版时间：November 2000
• 年：2000
• 卷：39
• 期：11
• 页码：4415 - 4421
• 全文大小：95K
• 年卷期：v.39,no.11(November 2000)
• ISSN：1520-5045

文摘

A recently proposed algorithm for performing thermodynamic equilibrium calculations subjectto the influence of the gravitational field is extended to semicontinuous mixtures. Thecharacterization of the continuous families is done by a pseudocomponent discretization basedon a convenient choice of orthogonal polynomials to sample the distribution function interval.Then, adequate quadrature points and weights are calculated. We present results for a familyof hydrocarbons from C₈ to C₂₀ with 51 mol % of methane for one-phase, two-phase, three-phase,and near-critical systems. Our results show the validity of the procedure for simulations of deepreservoirs and high-pressure storage conditions, solving problems with a high number ofindependent variables.