Application of Advanced Proless Control Technology for 480 t/h Circulating Fluidized Bed Boiler Based on Model Predictive Control
Circulating fluidized bed(CFB)boiler is widely used because of its advantages of good combustion adaptation,high combustion efficiency,wide range of load regulation and low emission of combustion pollutants.However,due to the nonlinear,strong coupling and large hysteresis of CFB boilers,it is difficult to achieve efficient and stable control with conventional PID control.In view of the complexity of CFB boiler control,the advanced control technology of model prediction is introduced.Based on ARX model and FIR model,the status of CFB boiler is dynamically predicted and optimized by multi-variable control matrix model.Through verification,this technology has improved the operational stability of the device and the average combustion efficiency of the boiler,resulting in a 0.6%increase in the production rate of high-pressure steam per unit of coal,saving energy consumption and reducing CO2 emissions.
CFB boilerAPC advanced controlARX modelFIR modelmulti-variate model predictive controlenergy saving and emission reduction
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