Tanking 350 MW unit in one power plant as example

the infuence of fouling upon operation of boiler and condenser has been analysed.Results show that the exsistence of fouling makes the temperature of flue gas exhausted from boiler to be increased about 15℃

the thermal efficiency to be declined about 0.8%

and the terminal temperature difference of condenser to be increased by 2℃.During period of rubber ball cleaning for the condenser

the variation range of turbine's capacity is 2697.708 kW.Practice shows that the use of soot-blower and rubber-ball cleaning in the power plant is very necessary

but the cost of soot-blowing is comparatively high

needing 1.295 million yuan for per year only for one 350 MW unit.