The rotary kiln + secondary combustion chamber supporting equipment used in this project is used for garbage and solid waste disposal incineration and the treatment of harmful components of waste gas.

1) Host device parameters

Rotary Kiln:

Power supply: 380V/50Hz/3Ф, the energy consumption level of the motor is IE2, the insulation level is F level, the protection level is IP54, and the explosion-proof level is dII BT.

Kiln body specification: Φ2200X18000(mm)

Equipment slope: 3:100

Main material of kiln body: Q345R

Kiln head and kiln tail sealing form: fish scales and labyrinth

Support form: two-point support

Transmission form: single-end two-stage transmission, pinion supported by double bearings

Rotary kiln working temperature: 600℃~700℃

Secondary combustion chamber:

Secondary combustion chamber material: Q345

Working temperature of secondary combustion chamber: 1100℃

2) Process flow

The feeding port of the rotary kiln is equipped with a pushing mechanism to ensure continuous feeding. The solid (hazardous) waste is fed into the rotary kiln through the feeding mechanism to be incinerated into high-temperature flue gas and ash. The outlet temperature of the rotary kiln is 800-850℃. After the flue gas enters the secondary combustion chamber, the secondary air is tangentially injected around the secondary combustion chamber, so that a strong vortex field is formed in the secondary combustion chamber, and the combustible components in the flue gas can be removed. Full burn. At the same time, the secondary combustion chamber adopts a unique structural design, so that the secondary combustion chamber has the function of cyclone dust removal. The flue gas temperature at the outlet of the secondary combustion chamber is greater than 1100°C, and the residence time of the flue gas in the high temperature area is more than 2 seconds, ensuring the complete decomposition of harmful components including dioxins in the flue gas, and meeting the requirements for hazardous waste incineration.

The rotary kiln maintains a stable slag layer about 50mm thick to protect the refractory layer.