Cause Analysis of Congested Pulverized Coal Dropping of Pulverized Coal Feeder in Storage Pulverizing System and Solutions

Abstract

Abstract The newly built unit in certain power generation company adopts storage pulverizing system and 16 sets impeller coal feeder. The pulverized coal feeders suffered unstable feeding frequently during infrastructure debugging, leading to large fluctuation of furnace negative pressure, steam temperature and load, and affecting safe and stable operation of the unit. This paper deeply analyzes the causes of congested feeding of pulverized coal feeder, formulates corresponding countermeasures from aspects of cleaning, installation and operation adjustment of pulverizing system, and guarantees stable operation of the unit through optimization logics and operation method. This paper provides references for actual operation and solution of similar problems in power plants.