RT info:eu-repo/semantics/article
T1 Accurate experimental (p, ρ, T) data of the (CO2 + O2) binary system for the development of models for CCS processes
A1 Lozano Martín, Daniel
A1 Akubue, Gerald U.
A1 Moreau Ortega, Alejandro
A1 Tuma, Dirk
A1 Chamorro Camazón, César Rubén
K1 Termodinámica
K1 Carbon
AB The limited availability of accurate experimental data in wide ranges of pressure, temperature, and composition is the main constraining factor for the proper development and assessment of thermodynamic models and equations of state. In the particular case of carbon capture and storage (CCS) processes, there is a clear need for data sets related to the (carbon dioxide + oxygen) mixtures that this work aims to address. This work provides new experimental (p, ρ, T) data for three binary (CO2 + O2) mixtures with mole fractions of oxygen x(O2) = (0.05, 0.10, and 0.20) mol·mol-1, in the temperature range T = (250 to 375) K and pressure range p = (0.5 to 13) MPa. The measurements were performed with a high-precision single-sinker densimeter with magnetic suspension coupling. The density data were obtained with estimated expanded relative uncertainties of 0.02 % for the highest densities, and up to 0.3 % for the lowest ones.The results were compared to the corresponding results calculated by the current reference equations of state for this kind of mixtures, namely the EOS-CG (combustion gases) and the GERG-2008 equation of state, respectively. The EOS-CG yields better estimations in density than the GERG-2008 equation of state. The results from the EOS-GC model show no systematic temperature dependence. For the GERG-2008 model, however, this criterion is significantly less fulfilled.
PB Elsevier
SN 0021-9614
YR 2020
FD 2020
LK http://uvadoc.uva.es/handle/10324/43192
UL http://uvadoc.uva.es/handle/10324/43192
LA spa
NO The Journal of Chemical Thermodynamics, November 2020, vol. 150, 106210
NO Producción Científica
DS UVaDOC
RD 18-nov-2024