Introduction To Incinerator

There are many classification methods from different angles. According to the incineration chamber, it can be divided into: single-chamber incinerator and multi-chamber incinerator. According to the relationship between the direction of combustion flue gas and garbage movement, the furnace body can be divided into downstream, countercurrent, alternating and secondary flow.
Incinerator is a harmless treatment equipment commonly used in medical and domestic waste and animal harmless treatment. Its principle is to use the combustion of fuels such as coal, fuel oil and gas to burn and carbonize the objects to be treated at high temperature to achieve the purpose of disinfection.
There are many classification methods from different angles. According to the furnace type, it can be divided into fixed grate furnace, mechanical grate furnace, fluidized bed incinerator (mainly used to treat industrial waste), rotary kiln furnace, etc. In order to enhance the effect of domestic waste incineration, thermal decomposition and gasification (melting) technology are often used in incineration. The principle of the grate incinerator is: the garbage is supplied to the grate of heat-resistant cast iron (steel), and ventilation is carried out from the bottom of the grate to burn the garbage. The incineration principle of the fluidized bed incinerator is as follows: ventilation is carried out in the porous tubes at the bottom of the tower-type furnace to make the upper sand layer flow to form a fluidized layer. After the crushed garbage is put into the furnace, it comes into contact with the flowing sand (650-800°C) and burns instantly. The ash after combustion is carried to the flue gas treatment system by the combustion gas. The incineration principle of the gasification and melting furnace is as follows: the garbage is first thermally decomposed into combustible gas and solid residue mainly composed of carbon in a reducing gas at 450-600°C, and then burned and melted. When designing the incinerator, the processing scale of the factory, the nature of the garbage to be processed, the mechanical load and heat load of the grate, the heat load of the combustion chamber, the combustion chamber outlet temperature and the flue gas residence time, and the thermal burn-off rate should be comprehensively considered for design.