Research on Energy Utilization in Recovery of CO2 from Boiler Flue Gas

Abstract

To the 2 × 40 t/h heating boiler flue gas, ethanolamine was used for absorption, carbamate – for desorption. The waste heated boiler flue gas was used to heat the absorption and the desorption; the pump was driven by the solar energy. The results showed that the best absorption rate was 82.28%, when the ethanolamine concentration was 40% and the temperature was 40 ∘ C; the energy consumption was 59.82 KJ/mol. The best desorption temperature was 115 ∘ C, the desorption rate was 55%, and its energy consumption was 694.30 KJ/mol. The pump needed 1.49 KJ/h, reduced 42.8 t/year of CO 2 and regenerated 23.54 t/year of CO 2 .