In view of the waste disposal problem faced by urban green development

taking advantage of the advantages of coal-fired power plants

the pre-drying and carbonization technology of urban waste is developed

that is

using the high-temperature flue gas of pulverized coal boiler to dispose the waste in an integrated processor

and the whole component products are transported to the high-temperature furnace for incineration through closed pipes. It realizes resource and harmless disposal of urban waste by coal-fired power plants. This technology has been applied to large-scale industrial projects of sludge coupled power generation. The sludge disposal capacity of phase I project is 250 t/d

and that of phase II project will be increased to 500 t/d. After the system is put into operation

the operation parameters of the main and auxiliary equipment of the boiler are normal

the pollutant emission indexes of the boiler meet the environmental protection requirements

and there is no odor or organic smelly water in the disposal process. The third-party test results show that

after co-firing the sludge

the boiler efficiency decreases by about 0.298 percentage points. There is no significant difference in the emission concentration of dioxin in boiler flue gas when co-firing the sludge at different unit loads.