Integrated hybrid membrane/absorption process for CO2 capture and utilization

摘要

A two-stage process for upgrading a gaseous stream containing CO 2 and H 2 S in which the gaseous stream and pressurized water are provided to a first stage absorption process in which a portion of the CO 2 is absorbed by the pressurized water. The reduced-CO 2 gaseous stream and a chemical solvent suitable for absorbing CO 2 and H 2 S are provided to a second stage absorption process in which the H 2 S and remaining CO 2 are removed from the gaseous stream, producing an acid gas stream and an upgraded gaseous stream meeting pipeline-quality specifications.