期刊
FUEL
卷 87, 期 4-5, 页码 482-490出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2007.04.018
关键词
ignition; pulverized coal; tangentially fired boiler; combustion simulation
Prediction of pulverized coal ignition behavior in a 40 MW tangentially fired commercial boiler is studied. Pulverized coal combustion simulation is performed considering radiation properties of particles. Coal devolatilization and char combustion are modeled and the first order spherical harmonic approximation is used to model the radiative transfer equation. To confirm the accuracy of the simulation method, the results are confirmed by available operating data, design data, and the ignition image in the boiler whose inside is observed by the developed high temperature resistant CCD video camera system. The work indicates that the simulation method can be applied to commercial boilers and predict the ignition behavior with considering not only coal properties but also boiler operating conditions. (c) 2007 Elsevier Ltd. All rights reserved.
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