The explosion accident has frequently occurred in coal pulverizing system of unit no. 1 in one power plant. It is believed from analysis that the main causes leading to explosion to be coal dust depositing in the circulating pipeline

and high concentration of coal dust content in the exhaust gas etc. For this

the problem has been solved through retrofitting the recirculating pipeline

and adjusting the manupulation in operation. So far. the explosion phenomenon in coal pulverising system hasn't occurred a gain

avoiding effectively occurrence of similar Occidents

at the same time providing with valuable experience for comprehesive remedy of explosion in coal pulverising system in identical type power plants over the country.