DEVELOPMENT OF ENERGY-SAVING TECHNOLOGY FOR FLUE-GAS CARBON-DIOXIDE RECOVERY IN POWER-PLANT BY CHEMICAL ABSORPTION METHOD AND STEAM SYSTEM

The most important issue involved with the chemical absorption method for recovering carbon dioxide from a power plant's flue gas is to deve lop energy-efficient absorbents. KS-1 absorbent was presented at ICCDR -2 in Kyoto. After the conference, efforts to develop energy-efficient absorbents have been made and a new absorbent KS-2 was developed as a result and its performance confirmed by the pilot plant. KS-2 has sim ilar energy efficiency as KS-1 both of which require 20% less energy t han MEA. KS-2 is however more stable than KS-1 and a more efficient ab sorbent for low CO2 content flue gas. Detailed steam system was also d iscussed in this conference and accurate calculation results were pres ented. (C) 1997 Elsevier Science Ltd.