CO2Mix Project: Experimental Determination of Thermo-physical Properties of CO2-rich Mixtures

Abstract

The CO 2 Mix CO 2 -rich mix effect on the accurate mod operation of University o measurement physical prop © 2 Selection and

Vapor-liquid equilibrium data for the carbon dioxide and oxygen (CO2 + O2) system at the temperatures 218, 233, 253, 273, 288 and 298 K and pressures up to 14 MPa

“…The need for new data for these systems and the other mixtures relevant for carbon capture, transport and storage (CCS) has been discussed for instance in the recently reported comprehensive literature studies by [2,3,4,5]. Calculations using existing equations of state (EOS) [3,6] show that even small amounts of impurities in CO 2 -rich mixtures can significantly affect the behavior of the fluid [5,7]. As an example, the maximum pressure at which a mixture of CO 2 and 5% O 2 can be in the two-phase region, the cricondenbar, will increase to approximately 8.4 MPa compared to the critical pressure of CO 2 , 7.3773 MPa.…”

“…As described by Løvseth et al [7], the CO 2 Mix project aimed at performing accurate vapor-liquid equilibrium, speed of sound and density measurements of CO 2 -rich mixtures at conditions relevant for transport and conditioning in CCS [5,8]. As part of this project, a setup has been specifically designed and constructed in order to perform highly accurate phase equilibria measurements on CO 2 -rich mixtures under relevant conditions for CCS.…”

The phase equilibrium and density studies of the ternary mixtures of CO 2 + Ar + N 2 and CO 2 + Ar + H 2 , systems relevance to CCS technology

“…As the third most common gas (0.93 vol%) in the Earth's atmosphere, argon cannot be eliminated completely from an oxygen stream with an economically viable technology for oxyfuel combustion processes, resulting in a concentration of up to 4.5 vol% in the CO2 stream generated from a power plant (IEAGHG, 2005(IEAGHG, , 2011Lovseth et al, 2013). Compared to the CO2 + N2 binary system with ~5000 density and >400 VLE data points available, CO2 + Ar has ~1100 density and ~170 VLE data points reported in the literature.…”

Vapor–liquid equilibrium data for the carbon dioxide and nitrogen (CO2 + N2) system at the temperatures 223, 270, 298 and 303 K and pressures up to 18 MPa

“…Even small amounts of impurities in CO 2 -rich mixtures can significantly affect the behavior of the fluid [3,4]. As an example, the maximum pressure at which a mixture of CO 2 and only 5 % N 2 can be in the two-phase region, the cricon-denbar, will increase to approximately 8.4 MPa compared to the critical pressure of CO 2 , 7.3773 MPa [4,5,6].…”

“…As an example, the maximum pressure at which a mixture of CO 2 and only 5 % N 2 can be in the two-phase region, the cricon-denbar, will increase to approximately 8.4 MPa compared to the critical pressure of CO 2 , 7.3773 MPa [4,5,6].…”