TITLE:
Performance Analysis of Induced Draft Fan Driven by Steam Turbine for 1000 MW Power Units
AUTHORS:
Jianling Deng, Feifei Liang, Yang Ding, Zhiping Yang, Gang Xu, Jizhen Liu
KEYWORDS:
Induced Draft Fan; Source Steam; Auxiliary Power Ratio; Supply Coal Consumption Rate; Investment Recovery Period
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
20,
2013
ABSTRACT: Boiler fan is the main power consumption device in
thermal power units and the induced draft fan accounted for the largest
proportion. Reducing the energy consumption rate of induced draft fan is the
main path to reduce the power consumption rate of thermal power units. The
induce fan driven by small turbine is greatly effective for reducing the power
consumption rate and the supply coal consumption rate in large thermal power plant.
Take 1000 MW power units for example, the selection of steam source for steam
turbine were discussed and economic performance of the unit under different
steam source was compared in this paper. The result shows that compared with
the motor driven method, there is about 1.6 g/kWh decrease in supply coal consumption rate
driven by the fourth stage extraction steam; whereas there is about 2.5 g/kWh decrease in supply coal consumption
rate driven by the fifth stage extraction steam.