Abstract:

To solve the problems such as coal bunker frequent jam, air seal leakage and powder pipe blockage, improvement reconstruction of coal bunker, air seal, hot air isolation valve and pulverizer impeller was carried out. The lifetime of vulnerable parts was evaluated. An integrated performance improvement plan for bowl type medium speed pulverizer was established. This could be referred by similar power plant. 

Key words:

bowl type medium pulverizer, coal bunker, air seal, hot air isolation valve, life evaluation