TY - JOUR
T1 - Experimental determination of hydrate dissociation conditions in CO2 + hexane + dodecane system, + 1-propanol or + tetra-n-butyl ammonium bromide
AU - Chima-Maceda, José M.
AU - Pimentel-Rodas, Alfredo
AU - Galicia-Luna, Luis A.
AU - Notario-López, Angel M.
N1 - Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/7
Y1 - 2021/7
N2 - Hydrate dissociation conditions for one four-component system and two five-component systems, the CO2 + hexane + dodecane + water system, the CO2 + hexane + dodecane + 1-propanol + water system, and the CO2 + hexane + dodecane + tetra-n-butyl ammonium bromide (TBAB) + water system, were measured in the pressure range of (1.5 to 4) MPa and temperature range of (283 to 290) K at (0.1, 0.2 and 0.3) mass fraction of 1-propanol or TBAB. The experimental measurements were performed using the isochoric pressure-search method in a high pressure blind cell. The hydrate dissociation conditions (temperature and pressure) for the CO2 + hexane + dodecane + water system were compared with experimental data available in international literature were good agreement between the data was founded which indicates the viability of the experimental technique reported in this study. The experimental uncertainties were determined for temperature and pressure as combined standard uncertainties and are 0.16 K and 0.04 MPa, respectively. The relative standard uncertainty in composition was estimated to be 0.0014. In order to verify the reliability of the experimental data containing 1-propanol, a thermodynamic consistency test was performed.
AB - Hydrate dissociation conditions for one four-component system and two five-component systems, the CO2 + hexane + dodecane + water system, the CO2 + hexane + dodecane + 1-propanol + water system, and the CO2 + hexane + dodecane + tetra-n-butyl ammonium bromide (TBAB) + water system, were measured in the pressure range of (1.5 to 4) MPa and temperature range of (283 to 290) K at (0.1, 0.2 and 0.3) mass fraction of 1-propanol or TBAB. The experimental measurements were performed using the isochoric pressure-search method in a high pressure blind cell. The hydrate dissociation conditions (temperature and pressure) for the CO2 + hexane + dodecane + water system were compared with experimental data available in international literature were good agreement between the data was founded which indicates the viability of the experimental technique reported in this study. The experimental uncertainties were determined for temperature and pressure as combined standard uncertainties and are 0.16 K and 0.04 MPa, respectively. The relative standard uncertainty in composition was estimated to be 0.0014. In order to verify the reliability of the experimental data containing 1-propanol, a thermodynamic consistency test was performed.
KW - 1-propanol
KW - CO
KW - Dodecane
KW - Gas Hydrate
KW - Hexane
KW - TBAB
UR - http://www.scopus.com/inward/record.url?scp=85101835369&partnerID=8YFLogxK
U2 - 10.1016/j.jct.2021.106419
DO - 10.1016/j.jct.2021.106419
M3 - Artículo
AN - SCOPUS:85101835369
SN - 0021-9614
VL - 158
JO - The Journal of Chemical Thermodynamics
JF - The Journal of Chemical Thermodynamics
M1 - 106419
ER -