Studies on CO<sub>2</sub> Absorption in Simulating Flue Gas

The absorption of CO 2 with ethanolamine (MEA) was studied in this paper, and proper additives such as piperazine (PZ) and N- methyldiethanolamine (MDEA) were mixed in different proportion to the main reacting substance. The performance of absorbents with different formula were studied by analyzing and comparing the characteristic indexes of absorbents, including absorption rate, regeneration temperature, absorption capacity of CO 2 , and regeneration degree. The results have been shown that aqueous solutions added PZ could increase absorption rate and improve absorption capacity than that of MDEA, and Aqueous solutions added MDEA could decrease regeneration energy and improve regeneration degree than that of PZ. The formular of 16%MEA+4%PZ could be the most suitable absorbent of CO 2 in the study.