Introduction to Boiler Grates

　　ChainBoiler Gratehttp://www.ynlupai.cn/It is a type of mechanized combustion equipment widely used in industrial boilers, but its application range is limited. The combustion method of chain boiler grates is generally moving fireboat combustion. The ignition condition is limited ignition, and the fuel enters the interior through the coal hopper of the boiler grate. As the boiler grate gradually advances, the burning and consumed coal ash will move to the tail with the grate and then be discharged. Therefore, compared to bubbling furnaces, vibrating furnaces, and reciprocating furnaces, chain boiler grates have higher requirements for coal quality. Mechanical coal-feeding furnaces are basically in a state of unlimited ignition, so their adaptability to coal quality is relatively broad.

　　The chain boiler grate is a horizontal three-pass water-fire tube mixed boiler, which generally has a threaded smoke tube set inside the boiler drum, and a light tube water-cooled wall installed on both sides of the furnace. It uses a chain boiler grate to achieve mechanical coal feeding, and also has a fan and blower for mechanical exhaust. At the same time, a scraper-type slag remover is installed to achieve automatic slag discharge. The chain boiler grate uses energy-saving counted furnace arch fuel, which falls from the coal hopper onto the boiler grate. After entering the furnace tower for combustion, the flame will arch up, pass through the combustion chamber on both sides, bend to the front smoke box, and then return to the tube bundle. After that, it enters the water gas and is drawn by the fan through the flue to the chimney for discharge into the atmosphere.

　　ChainBoiler GrateThe ignition conditions are relatively poor, and the applicable coal types are not many. The ignition of coal mainly relies on the flame and radiant heat inside the furnace. Therefore, the coal on top will ignite first and then gradually burn down, which is a single-sided ignition. This combustion process shows obvious regional stratification on the grate. After the coal enters the furnace, it gradually moves slowly from front to back with the grate. At the front of the grate is the new coal combustion preparation area, mainly for preheating and drying the coal. Next is the volatile analysis area, where it begins to enter the combustion area. In the middle of the grate is the coke combustion area, which has a high temperature and undergoes oxidation and reduction reactions, releasing a large amount of heat. At the rear of the grate is the ash burnout area, where the remaining coke in the ash continues to burn, usually referred to as charring.

　　Currently, the chainBoiler GrateIts thermal efficiency has reached over 77%, which is higher than the relevant technical standards. It has also achieved mechanization in operation, thereby reducing the labor intensity of workers. The installation speed is very fast; after arriving on-site, it only requires the installation of the slag remover, dust collector, smoke and air ducts, fan, and other equipment to start working, saving a lot of labor time during the installation process.