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• Main Authors: Ke-chien He, 何克健
• Other Authors: Chung-Te Lee
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/23618212634738308875

碩士 === 國立中央大學 === 環境工程研究所在職專班 === 102 === In order to manage large stationary emission sources of air pollutants, Taiwan Environmental Protection Administration requires the setup of “Continuous Emission Monitoring System (CEMS)” for collecting air pollution fees and compiling emission inventory. The on-line emission characteristics can further facilitate the forensics of pollution liability when settling down pollution dispute. Therefore, the correctness of the continuous emission monitoring data is important. This study selected three coal-fired cogeneration power plants with the installation of CEMS named A, B, and C for investigation. Data from coal consumption, operating parameters of air pollution control devices (APCD), and CEMS were collected from 2010 to 2013. Meanwhile, SO2 and NOX production and emissions were measured to estimate the removal efficiency of APCD and emission factors of SO2 and NOX per tonne. The objective of this study is to investigate the emission characteristics of SO2 and NOX from coal-fired cogeneration power plants and apply to inspect the correctness of CEMS data. The results showed that the amount of coal consumption was more correlated with the emissions and not the concentrations of pollutants and dosages (ammonia) of selective catalytic reduction (SCR) devices for data in 2013. Therefore, coal consumption can be utilized to judge the correctness of monitoring data. Based on the results of manual sampling before and after APCD, the emission factor of SO2 is 18.22S kg/Ton-coal in plant B with S as the sulfur content of coal and 10.36S kg/Ton-coal in plant C. In contrast, the emission factors of NOX in plant B and C are 4.51 kg/Ton-coal and 7.05 kg/Ton-coal, respectively. And the removal efficiency of flue gas desulfurization device is 97.5 % in plant B and 91.5 % in plant C, while that of SCR is 80.8 % in plant B and 90.4 % in plant C. Additionally, the time variations of CEMS data of plants A, B, and C before illeagal findings in 2009 were different from that of 2013 by comparing Relative Accuracy Test Audit (RATA) data and time variations of CEMS data. It implies that the correlation between fuel consumption and pollutant emissions and RATA data can be used to determine the validity of continuous monitoring data.