The Volumetric Properties for Selected Impurities in Dense CO2 Destined for Re-Injection

Acid gas re-injection and carbon capture and storage are two technologies now implemented for reducing the industrial emission of CO2 and management of produced CO2. In both cases, impurities such as H2O, H2S, COS, O2, and SO2 can find a way into a CO2 injectate stream. These impurities can impact the thermophysical properties and chemical equilibria within the fluid stream. In this work, the volumetric influence of H2S, COS, CS2, SO2, and O2 impurities in a dense CO2 phase were studied through high-precision density measurements. The densities were used in calculating the apparent molar volumes. These molar volumes were subsequently used in calibrating the mixing coefficients for reference Helmholtz Energy Equations of State and Fluctuation Solution Theory models. The optimized mixing parameters were validated by comparison to existing density measurements and/or bubble / dew point data. Finally, the mixing coefficients were utilized in a Gibbs Energy Minimization routine to optimize the enthalpy of formation for COS and to calculate the equilibrium quotients. These routines will be expanded in the future to explore high-pressure processes.

Name thesis:degree_name

Master of Science (MSc)

Discipline thesis:degree_discipline

Chemistry

Grantor dc:publisher.institution

Graduate Studies

Year dc:date.issued

2017

Author dc:creator

• Commodore, Albert Jerry

Advisor dc:contributor.advisor

• Marriott, Robert A

Committee members dc:contributor.committeemember

• Shi, Yujun
• Trudel, Simon
• Salahub, Dennis R.

• Chemistry--Physical

Statement dc:rights

• University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.

Language dc:language.iso

eng

DOI

http://dx.doi.org/10.11575/PRISM/28420

OAI identifier oai:identifier

oai:ucalgary.scholaris.ca:11023/4050