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中文摘要：
通过对循环流化床结构和炉内温度动态特性的分析，分别建立了炉膛、旋风分离器和外置床内的氧气体积分数平衡方程、动态床料量平衡方程、动态残碳量平衡方程和动态能量平衡方程，给出了以给煤量、一次风风量、二次风风量、排渣量和飞灰量作为输入变量的动态模型．基于四川白马电厂300MW循环流化床锅炉的现场数据，利用Matlab软件对该动态模型进行仿真，得到了一次风风量和给煤量阶跃扰动下床温的响应情况．结果表明：仿真结果与实际运行数据较吻合，可以很好地反映输入参数发生变化时床温的动态响应情况．
英文摘要：
Through dynamic characteristic analysis on the structure and in furnace temperature of a circulat ing fluidized bed boiler （CFBB） , balance equations were set up respectively for oxygen volume fraction, bed material flow, carbon residue and dynamic energy in the furnace, cyclone separator and external bed, following which dynamic models were established, by taking the coal feed rate, primary air flow, seconda- ry air flow, slag discharge and fly ash flow as the input variables. Based on the field data of Sichuan Baima 300 MW CFBB, numerical simulations were carried out using Matlab software, during which dynamic re- sponse of bed temperature was obtained under step disturbance of primary air flow and coal supply. Re- sults show that the simulation results agree well with the actual operation data and can better reflect the dynamic response of bed temperature under disturbance of input variables.
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