| 摘要 |
<p>PURPOSE:To improve the control performance in controlling of NOx in boiler flue gas by a method wherein the flame temperature of a burner is detected to control the mixing rate of flue gas according to a control signal into which the detected flame temperature signal is incorporated. CONSTITUTION:The flame temperature of a burner 2 is detected by an optical pyrometer 12, and the detected signal 13 is transmitted to a controller 14. The controller 14 adjusts a boiler load signal 15 according to the signal 13 detected by the optical pyrometer, and transmits a control signal 17 to an exhaust gas mixing control damper 8 to control the mixing rate of exhaust gas. The fluctuation in NOx value is controlled by this constitution, so that the control performance can be improved.</p> |
