| 摘要 |
<p>The present invention generally relates to vacuum pressure swing adsorption (VPSA) processes and apparatus to recover CO2 having a purity of approximate ly >=80 mole% from streams containing at least CO2 and H2 (e.g., syngas). Th e feed to the CO2 VPSA can be at super ambient pressure. The CO2 VPSA unit produces two streams, a H2-enriched stream and a CO2 product stream. The process cycle steps are selected such that there is minimal or no H2 losses from the process. The recovered CO2 can be further upgraded, sequestered or used in applications such as enhanced oil recovery (EOR).</p> |
