The invention discloses a
coal mill outlet
temperature control system and method based on CO monitoring. The
coal mill outlet
temperature control system comprises a
signal processor and a controller.The
signal processor receives CO concentration signals measured by the CO measuring device, a
coal mill outlet temperature set value is obtained through calculation according to CO concentration and coal quality, the controller controls the opening degrees of a coal mill hot air adjusting door and a coal mill
cold air adjusting door, the ratio of hot primary
air volume to cold primary
air volume is changed, the coal mill outlet temperature is adjusted, the coal mill outlet temperature measured by a coal mill outlet temperature measuring device is used as a feedback
signal, closed-loop controlover the coal mill outlet temperature is achieved, and the purpose of optimizing and adjusting the coal mill outlet temperature is achieved. According to the
system, accurate control over the coal mill outlet temperature is achieved by introducing the CO concentration signals, on the premise that the safety of a coal pulverizing system is guaranteed, the coal mill outlet temperature is increased,the
cold air mixing amount of the coal pulverizing system is reduced, the
smoke exhaust temperature is reduced, the
boiler efficiency is improved, and safe and economical operation of a unit is facilitated.