Coal-fired boilers can be divided into upper and lower two large factory. The upper bulk includes the boiler body, the steel frame set the upper furnace wall. The lower part of the large coal hopper, chain grate, base steel frame, the lower furnace wall. Except for the middle partition wall, the other parts are assembled and delivered. Coal fired boiler efficiency have high, compact structure and small footprint. Single – layer layout of boiler room of coal – fired steam boiler. The boiler assembly degree is high, the installation cycle is short, the installation cost is less.
This series of steam boiler is a double barrel longitudinal chain grate steam boiler. The boiler body is composed of a longitudinal upper and lower drum and a convection tube bundle. The left and right sides of the combustion chamber are equipped with light tube water wall tube. The upper drum is provided with a water separation device and a surface sewage discharge device, and the lower drum is provided with a regular sewage discharge device. The economizer is also arranged at the end of the boiler, and the light chain grate is used in the combustion part of the boiler to realize mechanical coal addition. Equipped with blower, induced draft fan for mechanical ventilation, and equipped with a spiral slag machine to achieve automatic slag, fuel from the coal hopper fell on the grate. After entering the furnace and burning, the flame through the rear arch refraction upward through the body burning chamber to the convection tube bundle, through the rear flue gas outlet into the economizer, dust collector, and then pumped by the induced draft fan through the flue to the chimney exhaust to the atmosphere.
Coal fired boiler efficiency have high and can reach more than 85%, low operating cost and safe and reliable operation. The burning part of it adopts light chain grate with air inlet on both sides. Six independent air chambers are arranged under the grate, and an air conditioning mechanism is arranged on both sides of the air chamber. The air is pumped into the lower part of the base by a blower into the two side air ducts, and the air conditioning mechanism enters the independent air chamber. The upper wall of this series steam boiler is assembled by the factory. The lower furnace wall and front and rear arches are composed of refractory clay brick silicate fiber and insulation materials. The fuel from the coal hopper through the coal gate into the furnace combustion, burning out the cinder under the operation of the grate into the slag hopper from the spiral slag machine discharge.
The boiler is equipped with an electric control operation platform, which is equipped with boiler thermal parameter display instrument, drum, induced draft fan opening indicator table and remote control button of electric actuator. The boiler feed water adopts automatic feed water device and is equipped with over temperature alarm device. The type of coal suitable for combustion is second class bituminous coal with low calorific value ≥17750J/Kg, volatile substance BBB 0 38.5%, ash content ≤32.4%. The heating surface arrangement is sufficient and reasonable, the boiler temperature rises, the pressure increases quickly, the output is sufficient and the thermal efficiency is high.
The coal fired boiler efficiency have high, high quality, full water pipe structure, long life, radiation heating, high efficiency, environmental protection and energy saving. The grate is divided into the air bin, the air volume of the air bin is independently adjustable, the grate is stepless speed regulation, which can adapt to the wide variety of coal and the combustion is sufficient. The boiler electric control cabinet is equipped with complete automatic control and monitoring instrument, with high degree of automation, safety and reliability, and easy operation. Zozen Boilers dedicated to providing customers with quality products, after years of continuous production and development, now we have a complete range of boiler products, reasonable price, welcome to consult!