LI Peng;ZHOU Weiqing;BAI Xiaoxuan;CHEN Chuanmin;LIU Songtao;SUN Tianxiang;

• 1:Jibei Electric Power Research Institute
• 2:State Grid Jibei Electric Power Co.
• 3:Ltd.
• 4:Department of Environmental Science and Engineering

Abstract：

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 of a 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 to full load. The impact of flue gas temperature on carbon emission performance was relatively weak; increasing from 75 ℃ to 145 ℃ resulted in only a 0.02% increase in carbon emission performance. The carbon emission performance first increased and then decreased as the air distribution increased. The carbon emission performance at 5.00×10~5,6.80×10~5 and 8.00×10~5 kg/h was 682.74,673.48 and 679.20 g/kWh, respectively. In addition, the carbon emission performance of coal species with low carbon content and high low calorific value was relatively low, and the carbon emission performance of coal powder moisture increase was slightly improved.

Key Words： carbon emission performance;coal-fired power plant;Aspen Plus;simulation;influencing factor

Abstract:

Keywords:

Foundation: 国家电网有限公司总部科技资助项目(1400-202214404A-2-0-ZN)

Authors: LI Peng;ZHOU Weiqing;BAI Xiaoxuan;CHEN Chuanmin;LIU Songtao;SUN Tianxiang;

DOI: 10.13226/j.issn.1006-6772.LC24061101

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