To provide a method for controlling an internal furnace pressure of a fiuidized bed incinerator which enables feeding of a secondary air necessary for combustion properly into a furnace without being affected by changes in the pressure in the furnace by reducing changes in the pressure in the furnace caused by combustion.
In an internal furnace pressure control method of a fluidized bed incinerator for incinerating wastes, an inlet damper of an induction blower is controlled by a signal to which a manipulation value(MV) of a secondary air damper is added by a PID control for controlling the pressure in the furnace. The manipulation value(MV) of the secondary air damper may be either a signal obtained by non-linear computation of the manipulation value(MV) of the secondary air damper or a signal by differentiating computation thereof. This internal furnace pressure control method may be a control combined with the secondary air quantity control of the fluidized bed incinerator.
OCHI YUJI
OTSUKI EIICHI
