| A kinetic characteristics algorithm of furnace combustion based on steady state is established, and a dynamic mathematical model of 450t/h CFB boiler made in China is developed in this paper. The model not only integrates the update theories and results of previous studies on the partial aspects, but also considers the main process in CFB boiler including flow, coal distribution, devolatilization of coal, char combustion, heat transfer and so on, and further improve the existing model of combustion kinetic characteristics. The established model is applied to simulate and predict the performance of 450t/h CFB boiler, and the simulated results are useful for designers and possible improvement of design and performance. The author collects and deals with some field measured data. It is showed, by comparing the experiment results of dynamic characteristics and field measured data, that the present model is more rational and practical than existing model, and is suitable for the combustion of large commercial CFB boiler. |
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