System for recovering acid gases from a gas stream

摘要

In one embodiment, a gas purification system is provided. The system includes a first section 150 having a first solvent path and a first gas path. The first gas path is configured to flow a stripping gas to remove hydrogen sulfide (H 2 S) and carbon dioxide (CO 2 ) from the first solvent path in a first vessel to produce a first gas mixture. The system also includes a second section 152 having a second solvent path. The second solvent path is configured to flow a second solvent mixture to remove H 2 S from the first gas mixture and CO 2 from the second solvent mixture within a second vessel. The second solvent mixture has a solvent saturated in CO 2 at a first pressure, the second vessel is operated at a second pressure, and the first and second pressures are within approximately 20% of one another.