一、引言目前在中储式热风送粉系统锅炉的运行和燃烧调整中,通常都是靠监视各给粉机的转速来保持一次风管中煤粉浓度均匀性。但各给粉机的特性会因各种因素的影响而产生不同程度的差异,使得操作人员无法准确地发觉各一次风管中的浓度差,严重时会影响锅炉运行的经 I. INTRODUCTION At present, the operation of coal-fired hot air feeding system boilers and combustion adjustment are usually based on monitoring the speed of the pulverizer to maintain the consistency of pulverized coal concentration in the air duct. However, due to various factors, the characteristics of the pulverizer will produce different degrees of difference, so that the operator can not accurately detect the concentration difference in each air duct and seriously affect the operation of the boiler