Journal
ENERGY
Volume 264, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2022.126130
Keywords
Combined model; NOx emission; 1D model; Artificial intelligence
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In this study, a novel combined model based on 1D semi-empirical model and three black box models is proposed to predict the dynamics of NOx emission of a 350 MW circulating fluidized bed (CFB) boiler. The results show that the combined model overcomes the limitation of the single model and achieves better prediction results.
Coal fired power plants account for a large part of China's NOx emission. A precise prediction of the NOx emission can effectively improve the pollutant control level and operation ability. In this study, a novel combined model based on 1D semi-empirical model and three black box models is proposed to predicted the dynamics of NOx emission of a 350 MW circulating fluidized bed (CFB) boiler. In addition, an improved differential evolution algorithm based on non-negative constraint theory is used to determine the optimal weight coefficient of the combined model. Three different working condition datasets of the CFB boiler are acquired to evaluate the performance of combined model. The results of the experiments and discussions show that the combined model overcomes the limitation of the single model and achieves better prediction results.
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