The working principle of mechanical grate domestic waste incinerator High-quality author list Mechanical grate domestic waste incinerator is an incineration equipment widely used in domestic waste treatment, and its working principle mainly involves the following key links: 1. The first step of the garbage feeding mechanical grate domestic waste incinerator is feeding. Through the garbage feed hopper, the household waste is fed into the furnace. In the feeding process, it is necessary to strictly control the water content, calorific value and other parameters of the garbage to ensure the incineration efficiency and stability. At the same time, the waste needs to be screened and shredded during feeding to reduce its size and make it easier to burn.
2. Drying and preheating.
After entering the furnace, the waste first goes through the drying and preheating stages. In a high-temperature environment, the moisture in the garbage gradually evaporates and is carried away by the high-temperature flue gas, and the temperature of the garbage is increased. The preheating process is conducive to improving the combustion efficiency of the waste and preparing it for subsequent combustion.
3. Combustion and flue gas formation.
After drying and preheating, the waste enters the combustion zone. In a high-temperature environment, the combustible substances in the garbage react with the oxygen in the air, producing high-temperature smoke and ashes. During the combustion process, it is necessary to control the amount of air supplied to fully burn the garbage and reduce the generation of harmful substances such as nitrogen oxides.
Fourth, ash discharge and heat**.
After combustion, the ash gradually cools and forms agglomerates on the grate, and is discharged from the furnace by periodic movement or vibration of the grate. In this process, part of the heat is transferred to the system through the ash to provide the conditions for the heat. Common forms of heat** include waste heat boilers, steam generators, etc., which are used to produce steam or hot water and realize the reuse of energy.
5. Flue gas treatment and emission.
High-temperature flue gas contains a variety of harmful substances, such as sulfur oxides, nitrogen oxides, heavy metals, etc. In order to meet environmental standards, the flue gas needs to be purified. Common treatment methods include desulfurization, denitrification, dust removal and other processes to remove harmful substances in the flue gas. The treated flue gas is discharged into the atmosphere through the chimney.
6. Control system and security guarantee.
The control system of the mechanical grate domestic waste incinerator is the core of the whole system, which is responsible for monitoring and controlling the operation status of the grate, the combustion process and the flue gas treatment. Through the automatic control system, the automatic adjustment and control of the incineration process can be realized to ensure the incineration efficiency and environmental protection standards. At the same time, in order to ensure the safe operation of the equipment, it is also equipped with corresponding safety measures, such as over-temperature alarm, emergency shutdown, etc.
To sum up, the working principle of mechanical grate domestic waste incinerator involves multiple links such as feeding, drying and preheating, combustion and flue gas formation, ash discharge and heat**, flue gas treatment and discharge, control system and safety guarantee. Through scientific and reasonable process flow and control means, the mechanical grate domestic waste incinerator can efficiently process domestic waste and achieve the dual goals of resource reuse and environmental protection. With the continuous progress of technology and the improvement of environmental protection standards, mechanical grate domestic waste incinerator will continue to play an important role and contribute to municipal solid waste treatment.