View article

The economic viability of Carbon Capture and Sequestration (CCS) as a means of mitigating CO₂ emissions is significantly dependent on the minimisation of costs associated with the compression and transportation of the captured CO₂. This paper describes the development and application of a detailed thermodynamic model to compute and compare power requirements for various multistage compression strategies for CO₂ streams containing typical impurities originating from various capture technologies associated with industrial and power emission sectors. The compression options examined include conventional multistage integrally geared centrifugal compressors, supersonic shockwave compressors and multistage compression combined with subcritical liquefaction and pumping. In order to estimate the power demand for inter-stage cooling and liquefaction a thermodynamic model based on Carnot …