Abstract: Abstract:In Hunan Huadian Changsha Power Generation Company Limited, in order to improve the fan operation efficiency, to reduce the fan’s power consumption and to reduce the maintenance cost, the reformation of merging the boiler induced draft fan and the desulphurization booster fan in one was carried out. The concrete content of the reformation was introduced. The hot test after reformation shows that the new induced draft fan can operate safely and stably under various conditions, and the station service power consumption rate was reduced greatly.

Key words: Keywords:desulphurization system, induced draft fan, booster fan, reformation of merging in one, hot test