To improve the accuracy and temporal resolution of carbon emission accounting for thermal power plants,Aspen Plus in conjunction with mathematical models was used to account for carbon emission performance and analyze the effects of load,flue gas temperature,air distribution volume and coal composition on carbon emission performance. The results indicated that the carbon emission performance ofa certain coal-fired power plant′s 200 MW unit in fuel combustion was 674.02 g/ kWh,while the performance based on calcium desulfurization was 3.10 g/ kWh. Compared with the measured method,the deviation of carbon emissions calculated in this study was only 4.07%,validating the rationality of the accounting method. Regarding the analysis of factors affecting carbon emission performance,under 30%,50%,and 75% load of a 200 MW unit,carbon emission performances increased by 1.52%,3.86%,and 6.92% respectively compared tofull load. The impact of flue gas temperature on carbon emission performance was relatively weak; increasing from 75 ℃ to 145 ℃ resultedin only a 0.02% increase in carbon emission performance. The carbon emission performance first increased and then decreased as the airdistribution increased. The carbon emission performance at 5. 00 × 10, 6. 80 × 10 and 8. 00 × 10 kg/ h was 682. 74, 673. 48 and679.20 g/ kWh,respectively. In addition,the carbon emission performance of coal species with low carbon content and high low calorificvalue was relatively low,and the carbon emission performance of coal powder moisture increase was slightly improved.

李朋(1986—),男,湖北仙桃人,高级工程师,博士。E-mail:lipengzt@139.com

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LI Peng,ZHOU Weiqing,BAI Xiaoxuan,et al.Carbon emission performance calculation and impact analysis of coal-firedpower plants[J].Clean Coal Technology,2024,30(8):66-74.