(511d) Technical and Economic Assessment of Chemical Absorption Process at Lng Based Power Plant

CO₂emission from fossil fuel is a major cause for global warming effect, but it is hard to remove completely in actuality. Moreover, energy consumption is bound to increase for continuous economic development of a country which has an industrial formation requiring much energy demand. Therefore, we need to consider not only device for CO₂mitigation but also its impact when CO₂mitigation device is applied. The device for CO₂emission mitigation can be classified into three field - cut dawn energy consumption, development for CO₂removal and recovery technology, and development of alternative energy technology. Among these options, CO₂removal and recovery technology has a merit which can be applied to a process in the near future. Therefore, research for CO₂removal and recovery is actively progressing in Korea. In this study, the aim of this paper is to study the CO₂ recovery from a newly constructed demo pilot plant of 2 ton/day capacity. This pilot plant was constructed near a 250 MW LNG based power plant. The absorbent tested were MEA and blended absorbents containing primary, secondary, tertiary and sterically hindered amine such as MDEA + hexamethylenediamine (HMDA), AEPD + dipropylenetriamine (DPTA), and TIPA + DPTA. Also, environmental and economic assessment according to energy policy change for climate change agreement and increase of CO₂mitigation technology is accomplished, on the bases of operating data for CO₂chemical absorption pilot plant which is installed in the Seoul power plant (250 MW LNG based). LEAP (Long-range Energy Alternatives Planning system) was used to analyze the alternative scenario, and results were shown quantitatively.