1. Because the initial deposition layer is mainly caused by the condensation of volatile ash components and the heat transfer of small particles, it is difficult to prevent the formation of the initial deposition layer in actual operation. The main factor threatening the safe operation of MSW incinerator is inertial deposition
2. In addition to the nature of the initial layer, the adhesion of the ash particles transported by inertia on the initial deposition layer is also related to the temperature of the ash particles impacted. When the temperature of the ash particles impacted is very high and it is molten liquid, it is easy to bond, which aggravates the coking process
3. The thickness of the ash layer is usually uneven, which is related to the structure of the furnace, the middle position of combustion, the aerodynamic characteristics, the temperature characteristics of the furnace and the physical and chemical properties of the fuel
4. In different positions of the incinerator furnace, the thickness and structure of the coke block will be greatly different. Compared with the general fuel combustion, garbage incineration has low calorific value, high moisture content and relatively poor texture
5. The incineration process of MSW incinerator is very complex, the shape of MSW is uneven, the quality changes with seasons, years and regions, and the corresponding calorific value changes greatly, resulting in a great fluctuation of flue gas temperature and composition in the incineration process
The incineration process of MSW incinerator is more complicated than that of ordinary fuel combustion process. It can be said that the inherent characteristics of MSW determine its coking characteristics
