Effect of bed height on carbon diozide capture by carbonation/regeneration cyclic perations using dry potassium-based sorbents
IntroductionThe concentration of CO2 in the earths atmosphere has been increased by combusting fossil fuels to generate electricity in powcr plants. In order to reduce net CO2 emissions into the atmosphere, several options have been suggested, which are reducing energy consumption by increasing the efficiency of energy conversion, switching to less carbon intense fuels, and using renewable energies. These options, however, may not be enough to mitigate global wanning in the future, so the technology of CO2 capture and storage has been recently considered as an imminent and important option for mitigating global warming (Metz et al. 2005). Several methods have been developed for CO2 capture such as wet absorption, adsorption, membrane separation, and cryogenic separation. However, these methods have been faced on the limits of cost and energy required to treat the massive flue gas streams from fossil fuel-fired power plants. Recently, CO2 capture using dry regenerable solid sorbents has been studied as an innovative concept for CO2 recovery (Liang et al. 2004; Abanades et al. 2005; Nelson et al. 2005, 2007; Ryu et al. 2005; Yi et al. 2006, 2007a, b; Seo et al. 2007a, b). CO2 is efficiently removed from the flue gas stream by reacting with solid sorbents while regeneration produces an off-gas containing only CO2 and H2O. The condensation of an off-gas generates highly pure CO2, which is suitable for chemical feed stock or sequestration. CO2 capture with a solid sorbent is cost-effective since solid sorbents are made of cheap alkali metals.
Young Cheol Park Keun-Wou Park Sung-Ho Jo Chang-Keun Yi
Zero Emission Technology Research Center Korea Institute of Energy Research 71-2 Jang-dong Yuseong-gu Daejeon, Korea
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
297-298
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）