1. The regulation of boiler load is realized by changing the coal feed and the corresponding air volume; the boiler combustion is strengthened in order to improve the boiler load. The adjustment to the air and coal is that the air is firstly added then the coal is added, "the amount is less and the times are more" in order to avoid big fluctuation of bed temperature.  At the same time, the control to the bed temperature  also can be used as the auxiliary means for load adjustment. 

2. When the load is added, the coal combustion volume and air volume increase. under the condition of stable bed temperature, improve the temperature of boiler and increase the heating absorption capacity of the heating surface. Conversely, reduce the coal supply and air volume, lower the temperature of the hearth. and the boiler vaporization is reduced. 

3.When the load is increased, the primary air volume and the secondary air volume shall be firstly increased, then less amount of coal shall be added in order to make the differential pressure of material layer increase gradually, then the air supply amount and coal feed amount shall be stagger- increased until the required output is reached. 

4. When the load is reduced, the coal feed amount shall be firstly reduced, then the primary air amount and secondary air amount  shall be properly decreased and a part of circulating ash shall be slowly discharged in order to reduce the differential pressure of material layer. Repeat this operation untill the required output is reached. 

5. The changing of the bed temperature can also adjust the boiler load. Usually the high load is corresponding to the high bed temperature, and the low load is corresponding to the low bed temperature. But the bed temperature is restricted by many respects, the rangeability is limited, therefore the function on adjusting the load by changing the bed temperature is very limited.

6. The DCS control system controls the load of every boiler, the  evaporation capacity of each boiler does not exceed 260 t/h, if it is required by the load, the evaporation capacity can be instantaneously controlled not to exceed  286 t/h.