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석탄의 발열량 범주별 CO2 배출량 분석을 통한 석탄발전의 온실가스 감축 방안 연구
정현록 한국기후변화학회 2022 한국기후변화학회지 Vol.13 No.4
In this paper, we sought to reduce greenhouse gas emissions from coal power plants by analyzing CO2 emissions by coal calorific value. To this end, the analysis data of coal introduced to three coal power plants in Korea from 2014 to 2021 was used, and the CO2 emissions for high-calorific coal, medium-calorific coal, and low-calorific coal were analyzed. The CO2 emission factors were 95,264 kgCO2/TJ for high-calorific coal, 97,096 kgCO2/TJ for medium-calorific coal, and 100,027 kgCO2/TJ for low-calorific coal. CO2 emission intensity was 891.33 kgCO2/MWh for high-calorific coal, 908.47 kgCO2/MWh for medium-calorific coal, and 935.89 kgCO2/MWh for low-calorific coal. Therefore, CO2 emissions can be reduced by increasing the proportion of high-calorific coal compared to low-calorific coal in coal power generation. However, some issues need to be addressed before expanding the proportion of high-calorific coal. First, as particulate matter emissions are higher for high-calorific coal, the performance of air pollution prevention facilities must be improved. Second, because the price of high-calorific coal is higher than that of low-calorific coal, policy changes regarding the individual consumption tax imposed on coal are needed to improve the price competitiveness of high-calorific coal.