Pressure–Density–Temperature Measurements of Binary Mixtures Rich in CO2 for Pipeline Transportation in the CCS Process
Abstract
Often, power plants and industrial production plants—large point sources of CO2—are situated at long distances from storage locations; thus the transportation of the resulting CO2-rich streams, containing small amounts of impurities, is required from the point of capture to the storage site, making it very important to understand the thermodynamic properties of CO2-rich mixtures. The range of conditions studied in this work are of great interest for carbon capture and storage applications, in particular for pipeline transportation of CO2-mixtures. Pressure–density–temperature measurements were taken for binary mixtures of carbon dioxide with nitrogen, oxygen, or argon. Density was measured for all of the binary systems for temperatures between 273.15 K and 293.15 K and pressures between 1 MPa and 20 MPa, using a vibrating tube densimeter, Anton Paar DMA 512-HPM. The molar CO2 concentration was greater than 85 % for all mixtures tested.
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