Process flow: pretreatment and feeding system---rotary kiln + second combustion chamber combustion system---waste heat recovery system---exhaust gas purification treatment system---flue gas emission incineration system: including hopper, rotary kiln, secondary Combustion chamber, and auxiliary equipment such as combustion and fan. Waste heat recovery system: including waste heat boiler and boiler auxiliary system equipment. Flue gas purification system: Cool the flue gas in the incinerator and remove harmful substances, and discharge it after meeting the emission requirements. Including quench tower, dust collector, scrubber, flue gas heater, activated carbon supply system, ash removal system, etc. Flue gas discharge system: including induced draft fan, chimney, etc.