Techno-economic analysis of lignite fuelled IGCC with CO2 capture: Comparing fluidized bed and entrained flow gasifiers
Integrated coal gasification combined cycle (IGCC) plants with pre-combustion capture of CO2 represent one of the most promising options for generating lowcost decarbonized power using bituminous coals.This work systematically quantify the effect of coal rank on the efficiency and economics of IGCC systems with CO2 capture and storage (CCS),with a special focus on comparison of systems using fluidized-bed gasifier (U-GAS) and entrained flow gasifier (Shell).It was found that the Shell IGCCs are little affect by low rank coal after pre-drying in terms of thermal efficiency and the levelized cost of electricity (LCOE) is only increase by 2-6％ for lignite cases with and without CCS compared with bitimunious coal cases.The specific CO2 emissions of U-GAS gasifier based lignite fuelled IGCC with CCS is 198 g/kWhe,almost two times of shell gasifier cases,mainly due to lower carbon conversion in the gasifier and the higher methane in the rawgas of gasifier.Howerever,the total capital cost and COE of U-Gas IGCCs are 15-20％ less than that of Shell IGCCs because of lower capital cost of gasifier,coal drying units and air separate units per kWe.
IGCC CO2 capture and storage fluidized bed gasifier entrained flow gasifier emissions
Guangjian Liu Zhen Wu Haiying Zhang
School of Energy and Power Engineering,North China Electric Power University,Beijing 102206,China
国际会议
The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)
哈尔滨
英文
885-888
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）