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Type: Artigo
Title: Simulation and experimental study of methane-propane hydrate dissociation by high pressure differential scanning calorimetry
Author: Menezes, Davi Éber Sanches de
Ralha, Thiago Waldowski
Franco, Luís Fernando Mercier
Pessôa Filho, Pedro de Alcântara
Fuentes, Maria Dolores Robustillo
Abstract: Binary and ternary systems composed of methane-water and methane-propane-water, respectively, were studied using high pressure differential scanning calorimetry. The methodology was validated by comparing results for the binary system to experimental data obtained in the literature. The hydrate dissociation temperatures for the ternary system (methane-propane-water) at 21 MPa were experimentally determined for different compositions of the gas mixture and mole fractions of propane higher than 0.1 in the ternary system. Our results are in good agreement with the values predicted by applying the Cubic Plus Association (CPA) equation of state coupled with van der Waals-Platteeuw model for the hydrate phase. Although experimental results are considered satisfactory for both binary and ternary systems, higher deviations between our values and the simulated ones for the ternary system, considering peak temperature instead of the extrapolated onset as the hydrate dissociation temperature, are believed to be a consequence of dynamic effects that promote the formation of a heterogeneous hydrate and are negligible for the binary system
Subject: Metano
Country: Brasil
Editor: Associação Brasileira de Engenharia Química
Rights: Fechado
Identifier DOI: 10.1590/0104-6632.20180352s20160329
Date Issue: 2018
Appears in Collections:FEQ - Artigos e Outros Documentos

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