| abstract |
An energy-efficient method of recovering carbon dioxide (CO 2 ) in a high-pressure liquid state from a high-pressure gas stream. The method includes cooling, condensing, and/or separating CO 2 from a high-pressure gas stream in two or more separation zones and further purifying the resulting sub-critical pressure liquid CO 2 streams in a third purification zone to thereby provide purified CO 2 . The purified liquid CO 2 may be pumped to above the critical pressure for further utilization and/or sequestration for industrial or environmental purposes. |