The invention relates to the technical field of
sludge treatment, and discloses a
sludge treatment system for
drying sludge by using a
coal mill and
coupling coal-fired power generation, the sludge
treatment system comprises the
coal mill, a sludge charging
barrel and a coal-fired charging
barrel are coaxially arranged in the coal mill, the coal-fired charging
barrel is arranged in the sludge charging barrel, and the coal-fired charging barrel is arranged in the coal mill. An air inlet
pipe is communicated between the sludge charging barrel and the rotary hot air
nozzle ring, a rotating shaft is fixedly connected to the
millstone, the rotating shaft is coaxially arranged in the fire coal charging barrel, a first-stage crushing
assembly and a second-stage crushing
assembly are arranged between the sludge charging barrel and the fire coal charging barrel, the first-stage crushing
assembly is located above the second-stage crushing assembly, and the second-stage crushing assembly is located above the second-stage crushing assembly. And the rotating shaft is used for driving the first-stage crushing assembly and the second-stage crushing assembly to rotate. The coal mill has the advantages that wet sludge is prevented from being attached to the surfaces of the
grinding disc and the
grinding rollers, normal operation of the coal mill equipment is kept, meanwhile, the
grinding and screening efficiency of the wet sludge is improved, continuous supply of pulverized coal and sludge
powder mixed fuel is guaranteed, and the power generation efficiency of a
power station boiler is improved.