| 摘要 |
PURPOSE:To obtain the stable state of combustion to the wide load conditions of several burner for a pulverized coal combustion furnace by controlling the strength of swirling of combustion air or the speed of injection of fuel by detecting the positions of ignition of the flames of several burner. CONSTITUTION:A combustion flame controller is constituted by detectors 23 detecting the positions of ignition of flames fitted to a plurality of burners with vortex flow generators 21 ejecting combustion air as vortex flows and variable speed instruments 22 for air carrying pulverized coal, a computer 24 computing the positions of ignition of flames, a comparator 25 comparing the positions of ignition of flames, and a controller 26 controlling the vortex flow generators 21 and the variabel speed instruments 22 so that the position of ignition of several burner are made constant. A plurality of sensors 31, which detect beams from flames from the rectangular direction of the central axes of the burners and output the detecting value as electric signals, are fitted in the axial direction of the burners in the detectors 23. The sensors 31 must have excellent spatial resolving power is order to determine the positions of ignition of flames, and detect only beams from flames in some limited sections in the central axes of the burners. |
