| 摘要 |
<p>The present invention generally relates to vacuum pressure swing adsorption (VPSA) processes and apparatus to recover CO 2 having a purity of approximately ‰¥80 mole% from streams containing at least CO 2 and H 2 (e.g., syngas). The feed to the CO 2 VPSA can be at super ambient pressure. The CO 2 VPSA unit (30) produces two streams, a H 2 -enriched stream (38) and a CO 2 product stream (36). The process cycle steps are selected such that there is minimal or no H 2 losses from the process. The recovered CO 2 can be further upgraded, sequestered or used in applications such as enhanced oil recovery (EOR).</p> |
