The garbage is transported to the storage pit, enters the biochemical treatment tank, and dehydrated under the action of microorganisms, so that natural organic matter (food waste, leaves, grass, etc.) is decomposed into powder, and other solids include synthetic organic matter such as plastic and rubber and inorganic matter in the garbage The substance can not be decomposed and powdered. After screening, the unpulverized waste enters the first combustion chamber of the incinerator (temperature is 600 ° C), and the combustible gas generated enters the second combustion chamber. The non-combustible and non-pyrolyzable components are in the form of ash and slag. Exhaust from a combustion chamber. The temperature in the second chamber is controlled at 860 ° C for combustion, and high-temperature flue gas heats the boiler to produce steam. The flue gas is discharged from the chimney to the atmosphere after treatment, and the metal glass will not be oxidized or melted in the first combustion chamber, and can be sorted and recovered in the ash.
The characteristics of COA incinerators: useful materials in garbage can be recovered; but the processing capacity of a single incinerator is small, and the processing time is long. At present, the daily processing capacity of a single furnace is up to 150 tons, due to the residence time of flue gas above 850 ℃ It is difficult to exceed 1 second, the content of dioxins in the smoke is high, and it is difficult to meet the environmental protection standards. Recyclable useful substances in garbage. The incinerator burns sorted organic garbage. It has a high calorific value, generates many combustible gases such as carbon monoxide, and generates a large amount of electricity. However, in China, the actual domestic waste classification is quite small, and the CAO furnace is not suitable for waste incineration in China.
