Influence of methane and carbon monoxide in the volumetric behaviour of the anthropogenic CO2: Experimental data and modelling in the critical region

Rivas, C. ; Blanco, S. T. ; Fernández, J. ; Artal, M. ; Velasco, I.

Resumen: Density measurements of the systems CO 2 + CH 4 at T = 304.21 K and CO 2 + CO at T = 304.21 and 308.15 K were carried out at pressures and compositions of interest in the process of transport and storage of
CO 2 (CCS technology): P = 0.1 to 20 MPa, and xCO 2 ≥0.97. From the experimental P––T –xCO 2 data, we have studied the dependence of the isothermal compressibility, the excess molar volume, and the par-
tial molar volume of the solute with composition, pressure and temperature within the critical region. We have modelled the volumetric behaviour of these systems with Peng–Robinson, PC-SAFT and GERG
Equations of State, thus validating these equations under the conditions considered. Furthermore, we have confirmed the weakly attractive behaviour of these systems by performing a study of the interac-
tions between solvent molecules, CO 2 , and those of the solute, CO or CH 4 , using the Krichevskii Function concept and the Kirkwood–Buff Theory. Finally, we have quantified the influence of small amounts of
CH 4 and CO in the transport of anthropogenic CO 2 through several normalized parameters, related to the design and operation of the fluid transport process.

Idioma: Inglés

DOI: 10.1016/j.ijggc.2013.07.019

Año: 2013

Publicado en: International Journal of Greenhouse Gas Control 18 (2013), 264-276
ISSN: 1750-5836

Factor impacto JCR: 3.821 (2013)

Categ. JCR: ENGINEERING, ENVIRONMENTAL rank: 8 / 46 = 0.174 (2013) - Q1 - T1
Categ. JCR: ENERGY & FUELS rank: 16 / 83 = 0.193 (2013) - Q1 - T1

Tipo y forma: Article (PostPrint)