Highly efficient absorbents for post-combustion CO2 capture

Abstract

Abstract Highly efficient absorbents for CO 2 capture from the flue gas of power station were developed. The development of absorbent for CO 2 separation is the one of the core technologies in the manner of chemical absorption. In this study, novel absorbents for post-combustion CO 2 capture gave the fast absorption rate, higher absorption capacity and fast stripping rate than those of MEA which is the representative chemical absorbent for CO 2 separation. In addition, the newly developed absorbents have been evaluated their capability for CO 2 separation by absorption screening test, VLE and their applications to pilot plant test. At pilot plant test, it was possible to reduce the operation energy of facility because KoSol-1 & 2 needed 1∼2 ∘ C lower temperature of stripper, which have possess more than 50% of total energy required in CO 2 separation process, than that of MEA when the newly developed absorbents, KoSol-1 & 2, were used as an absorbent, respectively. In the case of KoSol-2, the removal efficiency of CO 2 was higher than that of MEA even in the 2 ∘ C lower stripper temperature.