The flue gas drying technology implemented in lean coal-fired boiler of Nanjing Power Plant was introduced.Problems such as hot flue gas fan abrasion

deposited ash vibrancy

and insufficient output occurred on this boiler were investigated.Moreover

solutions for the above problems were put forward.Through fan type selection optimization

fan blade abrasion resistant treatment

reasonable arrangement of maintenance and other measures

the problems of fan blade abrasion and deposited ash vibrancy were well solved

and the service life of flue gas fan was significantly prolonged

the time and cost of maintenance were reduced

and the safety and reliability of bituminous coal pulverizing system in lean coal-fired boiler were ensured.