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Viscosities, thermal conductivities and diffusion coefficients of CO2 mixtures:Review of experimental data and theoretical models
Mälardalen University, School of Sustainable Development of Society and Technology. (Energy Technology)ORCID iD: 0000-0002-6279-4446
SINTEF Energy Research.
Mälardalen University, School of Sustainable Development of Society and Technology.
Mälardalen University, School of Sustainable Development of Society and Technology.
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2011 (English)In: International Journal of Greenhouse Gas Control, ISSN 1750-5836, E-ISSN 1878-0148, Vol. 5, no 5, 1119-1139 p.Article in journal (Refereed) Published
Abstract [en]

Accurate experimental data on the thermo-physical properties of CO2-mixtures are pre-requisites fordevelopment of more accurate models and hence, more precise design of CO2 capture and storage (CCS)processes. A literature survey was conducted on both the available experimental data and the theoreticalmodels associated with the transport properties of CO2-mixtures within the operation windows ofCCS. Gaps were identified between the available knowledge and requirements of the system design andoperation. For the experimental gas-phase measurements, there are no available data about any transportproperties of CO2/H2S, CO2/COS and CO2/NH3; and except for CO2/H2O(/NaCl) and CO2/amine/H2Omixtures, there are no available measurements regarding the transport properties of any liquid-phasemixtures. In the prediction of gas-phase viscosities using Chapman–Enskog theory, deviations are typically<2% at atmospheric pressure and moderate temperatures. The deviations increase with increasingtemperatures and pressures. Using both the Rigorous Kinetic Theory (RKT) and empirical models in theprediction of gas-phase thermal conductivities, typical deviations are 2.2–9%. Comparison of popularempirical models for estimation of gas-phase diffusion coefficients with newer experimental data forCO2/H2O shows deviations of up to 20%. For many mixtures relevant for CCS, the diffusion coefficientmodels based on the RKT show predictions within the experimental uncertainty. Typical reported deviationsof the CO2/H2O system using empirical models are below 3% for the viscosity and the thermalconductivity and between 5 and 20% for the diffusion coefficients. The research community knows littleabout the effect of other impurities in liquid CO2 than water, and this is an important area to focus infuture work.

Place, publisher, year, edition, pages
2011. Vol. 5, no 5, 1119-1139 p.
Keyword [en]
CO2-mixtures, Transport properties, viscosity, thermal conductivity, diffusion coefficient, CO2 capture and storage
National Category
Chemical Engineering
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-13348DOI: 10.1016/j.ijggc.2011.07.009ISI: 000295300700001Scopus ID: 2-s2.0-80052538661OAI: oai:DiVA.org:mdh-13348DiVA: diva2:459568
Note

NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Greenhouse Gas Control. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Greenhouse Gas Control, [VOL 5, ISSUE 5, 2011]

Available from: 2011-11-28 Created: 2011-11-26 Last updated: 2017-12-08Bibliographically approved

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Li, HailongYan, Jinyue

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