To search the optimal control technology for fuel fast cutting at 100%load during fast cut back(FCB)process of thermal power units

the Fluent software was employed to simulate the combustion process in furnace under conditions with different coal mill stopping schemes.The six-layer mechanism model for the furnace was established

and the Simulink software was adopted.The optimum fuel fast cutting scheme during FCB process was discussed in detail

from the aspect of reserving the bottom coal mill

cola mill stopping sequence and stopping time interval.The simulation results indicate that

according to the comprehensive performance evaluation

the best fast fuel cutting technology scheme during the FCB process is to stop the coal mill from the top layer to the lowest layer

and keep the medium and bottom layers working.This scheme has a wide application range because the boiler selected in this study is commonly used in thermal power plants.