Development of NO<sub>X</sub> Prediction Method by Reactor Network Model

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  • リアクターネットワークモデルによるNO<sub>X</sub>予測法の開発

Abstract

<p>A simulation study was conducted to predict the concentration of nitrogen oxides (NOx) generated in pulverized coal combustion. In this study, the chemical reaction analysis software ANSYS CHEMKIN 18.2 was used to construct a reactor network model and simulate the NOx formation behavior during pulverized coal combustion based on the temperature distribution of the actual boiler, the initial composition of pulverized coal and feed gas, and the feed flow rate. In addition, the effect of Volatile N, which contributes significantly to the formation of NO was investigated. As a result, it was found that the NOx production behavior could be well reproduced by devising the reactor model configuration, including the secondary air distribution method. It has also been confirmed that NO produced originated from Volatile N. Future work regarding this study involves further optimizing the reactor model and aims to improve the rate constants of elementary reactions in the NO reduction stage.</p>

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