循环流化床全工况实时动态数学模型的研究

Study of Full Working Scope Dynamic Mathematical Model for CFBC

在详细分析影响循环流化床动态特性的主导过程—动态物料平衡，进风量与炉膛压降耦合，动态碳质量平衡和动态能量平衡的基础上，建立了以一套机理动态方程描述循环流化床启动、停机、事故和正常运行全工况过程的数学模型。提炼了流化床关键参数的主导因素，并确立了这些主导因素与负荷工况的作用关系，从而解决了培训仿真机研制中模型运算速度以及多工况数据的精确吻合问题。该模型在我国第一台全工况循环流化床锅炉电站培训仿真机中得到成功应用。

By analyzing the dominant dynamic processes (dynamic total mass balance, the coupling between furnace pressure drop and incoming air flow rate, dynamic carbon mass balance and dynamic energy balance) of CFBC, a set of theoretical dynamic balance equations is established, which is capable of describing the startup, shutdown, accident and normal operation process of CFBC. For the development of real time training simulator, some factors which affect the key parameters of CFB predominantly are defined load conditions. This consequently helps increase the model computation speed and solve the problem for the simulation results to agree exactly with design data under different load conditions. The model has been successfully applied in the first of a kind real time training simulator of CFBC power plant in China. Refs 2.