Biomass fuel boiler working principle:
The biomass fuel is evenly laid on the upper grate from the feeding port or the upper part. After ignition, the induced draft fan is turned on, the volatilization in the fuel is analyzed, the flame is burned downward, and the high temperature is rapidly formed in the area formed by the unburned belt and the suspended grate. The zone creates conditions for continuous stable ignition. The hot fuel and unburned particles that are smaller than the upper grate gap and the volatiles have burned out are falling down and falling under the action of the induced draft fan and gravity. The high temperature suspension grate continues to fall after a slight stay, and finally falls onto the lower grate. The incompletely burned fuel particles continue to burn, and the burnt ash particles fall from the lower grate into the ash hopper of the ash device. When the dust is accumulated to a certain height, the gray shutter is opened and discharged.
In the process of fuel falling, the secondary air distribution port is supplemented with a certain amount of oxygen for suspension combustion, and the oxygen supplied by the third air distribution port is the combustion combustion on the lower grate, and the completely burned flue gas passes through the flue gas outlet to the convective heating surface. . When the large particles of dust move upward through the partition plate, they enter the ash hopper due to inertia. The slightly dust is blocked by the dust baffle net and mostly falls into the ash hopper. Only some extremely fine particles enter the convection heating surface, which greatly reduces the convection heating. The ash accumulation on the surface improves the heat transfer effect.
This article is reproduced from China Biomass Supply Network.
The continuous application of biomass boilers in life has brought great convenience to people’s daily life, and will attract more people’s attention in the future.