The incinerator is an environmentally friendly equipment that burns exhaust gas, waste liquid, solid waste fuel, medical waste, domestic waste, animal carcasses, etc. at high temperature, reducing or shrinking the quantitative number, and at the same time achieves the use of part of the heat energy of the incineration medium.
There are many classification methods from different perspectives. According to the classification of the incinerator, it can be divided into: single-chamber incinerator and multi-chamber incinerator. According to the relationship between the combustion flue gas and the direction in which the waste moves, the furnace body can be divided into a forward flow type, a counter flow type AC type and a secondary flow type. It can also be divided into fixed incinerators and mobile incinerators according to the fixed method.
Medical waste is mostly composed of plastic products, glass products and residual medicine. If it is not disposed of, it will pollute the living environment and bring safety hazards to people's health. The medical waste incinerator is a stove and equipment for incineration of medical waste. The necessary garbage disposal machinery for hospitals.
The medical waste incinerator consists of four systems: waste pre-treatment system, incineration system, smog biochemical dust removal system and gas generator (auxiliary ignition incineration). The medical waste incinerator integrates automatic feeding, screening, drying, incineration, dust removal, dust removal, and automatic control.
The medical waste incinerator adopts high-tech measures of high-temperature combustion, secondary oxygen addition, and automatic slag discharge to meet the monitoring requirements of sewage discharge. In order to enhance the effect of domestic waste incineration, thermal decomposition and gasification (melting) technologies are often used in incineration. The principle of the grate incinerator is to supply waste to the heat-resistant cast iron (steel) grate, and ventilate from the lower part of the grate to burn the waste. The incineration principle of the fluidized bed incinerator is: ventilation in the perforated tube at the bottom of the tower furnace to make the upper sand layer flow to form a fluidized layer. After the crushed garbage is put into the furnace, it is mixed with the fluidized sand (650～800℃) Contact, thereby instantaneous combustion, the burned ash is carried by the combustion gas to the flue gas treatment system.
The incineration principle of the gasification melting furnace is: firstly, the garbage is thermally decomposed into combustible gas and carbon-based solid residue in the reducing gas at 450-600°C, and then burned and melted. The design of the incinerator should comprehensively consider the processing scale of the plant, the nature of the waste to be processed, the mechanical load and thermal load of the grate, the thermal load of the combustion chamber, the outlet temperature of the combustion chamber, the residence time of flue gas, and the heat reduction rate.
The gasification pyrolysis incinerator has two incineration chambers, a combustion chamber and a second combustion chamber. The outer shell is made of steel plate processing and welding, and the interior is built with refractory materials. Each furnace is separated by a furnace wall. In the entire incinerator, the airflow is Continuously change the direction of movement in the vertical direction, so that the combustible gas and combustible dust particles from a combustion chamber are fully mixed to be completely burned. The waste enters through the chute through the hopper at the top of the front end of the incinerator, and the waste is sent into a combustion chamber by the pneumatic furnace door. The waste entering the combustion chamber is heated by refractory walls or disposable burners. The air in the combustion chamber is heated from the bottom, The top and front parts are blown in. Before entering the second combustion chamber, the large particles are burned out through the air nozzle installed at the bottom of the furnace. There are two ash conveyors at the bottom of a combustion chamber, which automatically rotate the garbage and transport the ash to the ash chamber, where it finally burns out and enters the ash hopper. After the unburned flue gas is mixed at the inlet of the second combustion chamber, it is completely burned in the second combustion chamber. The temperature of the first combustion chamber is 500℃-800℃, the temperature of the second combustion chamber is 900℃-1100℃, and the residence time is more than 2 seconds. Auxiliary burners are installed on the side walls of the first and second combustion chambers, which are used when the incinerator starts up and the waste heat value is low to maintain the furnace temperature.
