(174e) Performance Evaluation of Aqueous Ammonia Process with Regeneration at High Temperature and Pressure

Technologies targeting removal of carbon dioxide from power plants' flue gas are under intensive development. The most proximal example of the technology is chemical solvent absorption process capturing carbon dioxide from power plant flue gas. Even though amine absorption is still considered as the most advanced chemical absorption technology, electricity producing industries are reluctant to adopt it because of its high operational cost resulting in dramatic efficiency reduction in electricity production. Recently, NETL/PowerSpan, EPRI/Alstom in US and KIER in Korea have gone through intensive study about aqueous ammonia process as cost-effective carbon dioxide capture technology. Aqueous ammonia process has numerous advantages over the amine process and its real scale performance and economic viability are prepared to be under evaluation through construction and operation of large demonstration plants across the Europe and North America. In this study, we would like to introduce the recent research results on KIER's aqueous ammonia process and recent results from preliminary study on low temperature absorption and high pressure regeneration