A staged-feed post -combustion co2 capture technology for flue gas stream

Abstract

An apparatus for capturing carbon dioxide (CO2) from a gas stream includes an absorber having (a) a flue gas inlet and (b) a staged CO2-lean amine absorbent inlet, including a first inlet and a second inlet at different levels of the absorber. The apparatus also includes: a stripper, including a staged CO2-rich amine absorbent inlet having a third inlet and a fourth inlet; a first pump and first conduit system adapted for delivering CO2-rich amine absorbent from a CO2-rich amine absorbent outlet in the absorber to the staged CO2-rich amine absorbent inlet; and a second pump and second conduit system adapted for delivering a CO2-lean amine absorbent from a CO2-lean amine absorbent outlet in the stripper to the staged CO2-lean amine absorbent inlet.

Dependencies are inferred from the claim text.