TY - JOUR
T1 - High pressure phase behavior of the system ethane + orange peel oil
AU - Sousa, A. R. Sampaio de
AU - Raeissi, S.
AU - Aguiar-Ricardo, A.
AU - Duarte, C. M. M.
AU - Peters, C. J.
PY - 2004/4/1
Y1 - 2004/4/1
N2 - High-pressure vapor-liquid equilibria of ethane+orange peel oil was determined experimentally by a synthetic method. No liquid-liquid immiscibility was observed in this system. Bubble and dew points were measured at ethane mass fractions ranging from 0.1 to 0.9988 and within temperature and pressure ranges of 282-363 K and 1-10 MPa, respectively. Critical points were also determined experimentally for ethane mass fractions of 0.75-0.9988. At very high ethane concentrations, the experimental results showed double retrograde vaporization behavior, in which the dew point curve has a double-domed shape. In this limited region, increasing the pressure at fixed concentration results in triple- or quadruple-valued dew points. The bubble and dew point data of this work were also compared with those of ethane+lemon peel oil and ethane+limonene, indicating an almost perfect match between all three systems. Even the double retrograde behavior of the orange oil system showed good agreement with that of ethane+limonene, even though the oil is composed of numerous components. The experimental data were correlated with the Stryjek-Vera modified version of the Peng-Robinson equation of state using the Mathias-Klotz-Prausnitz mixing rule with two binary interaction parameters. The results showed fairly good agreement with the data.
AB - High-pressure vapor-liquid equilibria of ethane+orange peel oil was determined experimentally by a synthetic method. No liquid-liquid immiscibility was observed in this system. Bubble and dew points were measured at ethane mass fractions ranging from 0.1 to 0.9988 and within temperature and pressure ranges of 282-363 K and 1-10 MPa, respectively. Critical points were also determined experimentally for ethane mass fractions of 0.75-0.9988. At very high ethane concentrations, the experimental results showed double retrograde vaporization behavior, in which the dew point curve has a double-domed shape. In this limited region, increasing the pressure at fixed concentration results in triple- or quadruple-valued dew points. The bubble and dew point data of this work were also compared with those of ethane+lemon peel oil and ethane+limonene, indicating an almost perfect match between all three systems. Even the double retrograde behavior of the orange oil system showed good agreement with that of ethane+limonene, even though the oil is composed of numerous components. The experimental data were correlated with the Stryjek-Vera modified version of the Peng-Robinson equation of state using the Mathias-Klotz-Prausnitz mixing rule with two binary interaction parameters. The results showed fairly good agreement with the data.
KW - Bubble point
KW - Citrus peel oil
KW - Critical point
KW - Dew point
KW - Limonene
KW - Peng-Robinson-Stryjek-Vera (PRSV) equation of state
KW - Vapor-liquid equilibrium
UR - http://www.scopus.com/inward/record.url?scp=1642399863&partnerID=8YFLogxK
U2 - 10.1016/S0896-8446(03)00051-2
DO - 10.1016/S0896-8446(03)00051-2
M3 - Article
AN - SCOPUS:1642399863
SN - 0896-8446
VL - 29
SP - 59
EP - 67
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
IS - 1-2
ER -