Phase behavior of olive and soybean oils in compressed propane and n-butane

Brazilian Journal of Chemical Engineering

P. M. Ndiaye²  M. Lanza¹  F. W. Tavares²  C. Dariva¹  D. Oliveira¹  J. Vladimir Oliveira¹ 

[1],Universidade Federal do Rio de Janeiro Escola de Química Rio de Janeiro RJ ,Brazil

关键词: Vapor-liquid equilibria;    Liquid-liquid equilibria;    Triglycerides;    Propane;    N-butane;   

DOI  :  10.1590/S0104-66322006000300014

来源: SciELO

【 摘 要 】

The aim of this work is to report the experimental data and thermodynamic modeling of phase equilibrium of binary systems containing soybean and olive oils with propane and n-butane. Phase equilibrium experiments were carried out using the static synthetic method in a high-pressure variable-volume view cell in the temperature range from 30 to 70ºC and varying the solvent overall composition from 5 to 98 wt%. Vapor-liquid, liquid-liquid and vapor-liquid-liquid phase transitions were observed at relatively low pressures. The Peng-Robinson and the SAFT equations of state without any binary interaction parameters were employed in an attempt at representing the phase behavior of the systems. Results show the satisfactory performance of SAFT-EoS in predicting qualitatively all phase transitions reported in this work.

【 授权许可】

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