In order to investigate the pollutants reduction characteristics of the brown coal-fired power plants during water recovery from flue gas

a flue gas condensation experimental system was built up in a 600 MW lignite power plant.The experimental results show that

as the inlet temperature of cooling water increased

the removal efficiency of SO_2 decreased from 9.8% to 6.8%.When the volume fracture of NH_3 in flue gas at the heater inlet increased

the removal efficiency of NH_4~+ gradually rose

which was between 19.7% and 43.1% under the test conditions.With the increasing feed water temperature

the removal efficiency of PM_(2.5) and PM_(10) increased at first and then decreased.In contrary

the removal efficiency of PM_1 exhibited a reverse trendency.The removal efficiency of PM_(2.5) was below 50% under present experimental condition

but it could be further improved by optimizing the heat exchanger and demister.