The invention relates to a
smoke near-zero-emission
system of a
coal-fired power
plant. The
smoke near-zero-release emission
system comprises a discharging
pipe, wherein the discharging
pipe is successively provided with a denitration apparatus, an electric
dust collector, a wet-method desulphurization apparatus, a wet-type electric
dust collector, a
smoke reheating apparatus and a
chimney; the denitration apparatus is provided with a first treatment cavity and a second treatment cavity, the first treatment cavity is internally provided with a
reducing agent, and the second treatment cavity is internally provided with an oxidized catalyst with Hg; and the discharging
pipe between the denitration apparatus and the electric
dust collector is provided with a cooling apparatus for lowering the temperature of smoke. The smoke near-zero-emission
system has the advantages that the smoke is successively treated by virtue of the denitration apparatus, the electric dust collector, the wet-method desulphurization apparatus and the wet-type electric dust collector, main pollutants in the smoke can be gradually removed, and the smoke is then heated by virtue of the smoke reheating apparatus, so that the
visual pollution is eliminated; and finally the smoke is discharged by virtue of the
chimney, and the near-
zero emission of the smoke is realized, so that the content of pollutants in the smoke is greatly reduced, the smoke
pollution is reduced, and the living quality is improved.