Chain grate biomass boiler is a single barrel longitudinal chain grate boiler. Suitable for burning molded biomass fuel, or pure coal or mixed coal and molded biomass fuel. There is economizer in the tail. The discharged ash and slag can be directly used as farm manure, which is a kind of energy saving and environmental protection product. Equipped with a drum induced draft fan for mechanical ventilation, and equipped with a spiral slag machine to achieve mechanical slag, complete control and monitoring instruments, safe and reliable operation of the boiler.
Fuel requirements: coal should meet the requirements of GB/T18342-2001 "Technical Conditions for Coal Used in Chain Grate Boiler", volatile content should be > 20%, granularity requires burning coal that has been sorted or contains less debris, less than 3mm should not exceed 30%, the particle should not be greater than 30mm. Moisture of biomass molded fuel: ≤15%, density: 800~1100㎏ / m 3; The block size is 32×32× (30~80) mm, or the rod size is φ30× (30~80) mm. It is mainly used for burning molded biomass fuel, or pure or mixed coal and molded biomass fuel to provide heat or power generation.
This series of boiler products by pulling part of the rising pipe on both sides of the collection box to the guard chamber, and then into the bottom of the drum side and the bottom of the drum insulation casting molding to form a top heating surface, with a novel furnace structure successfully solved the bottom of the drum directly by the high temperature flame radiation, to avoid the "bulge" defect. The setup of the flue on both wings of the biomass boiler makes the flue gas enter the pre-smoke box smoothly, so that the temperature of the tube plate is the same before, and the crack of the tube plate is avoided due to the temperature stress. The single return thread smoke pipe is used in the drum to strengthen the heat transfer effect. At the same time, the thread smoke pipe has the function of self-dust removal to avoid the dust accumulation in the smoke pipe.
The front and back arches of the boiler are supported by water-cooled wall tubes, forming an arch. The arch design adopts the scientific research achievements of "Second Prize of National Science and Technology Progress Award of Xi 'an Jiaotong University". The rear arch is low and long, and the outlet section is anti-inclined. The front arch inclination Angle of 45° echoes the rear arch, forming an obvious inverted "α" flame, which is conducive to the combustion of inferior coal and the adaptability of coal species is strong.
Fast loading biomass boiler grate side seal structure design is advanced and reasonable, to avoid the side seal stuck grate and grate on both sides of the uneven air distribution and burn out the defects of the side seal. There is an independent adjusting air chamber below the grate, air inlet on both sides; The new curved arm screw is used to adjust the structure, so that the ventilation cross section ratio can be reached; Flexible adjustment, uniform distribution of wind. Push-pull type sluice cleaning device is designed. The sluice is made of heat-resistant cast iron, which is finished and sealed to effectively prevent secondary combustion deformation and grate air leakage. Zozen Boilers specialize in producing various types of boiler products, welcome to consult us.
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