Biomass steam boiler is a kind of horizontal three – return water – fire tube hybrid boiler. A bunch of threaded smoke pipe is arranged in the pot barrel, and the left and right sides of the furnace chamber are equipped with light pipe water cooling wall. Biomass fired steam boilers adopts light chain grate to realize mechanical coal feeding, equipped with blower and induced draft fan for mechanical ventilation, and equipped with scraper slag machine to realize automatic slag discharge.
This series biomass boiler front and back arch adopts new energy saving technology furnace arch. Fuel fell from the coal scuttle onto the grate. After entering the furnace chamber for combustion, the flame is bent upward through the rear arch refraction and turns to the front smoke box through the combustion Chambers on both sides of the body. Then the front smoke box is retraced back to the tube bundle in the pot, and then into the energy saving device through the rear smoke box. Then by the induced draft fan through the flue to the chimney exhaust to the atmosphere.
When the biomass fired steam boilers is burning, the coal with roughly uniform fuel is dropped into the coal sill by the automatic coal feeder and enters the front arch for preheating under the rotation of the chain grate. It burns out in the burning area and falls into the slag pool. The high-temperature flue gas generated by furnace combustion enters the back of the furnace through the arch mouth at the lower part of the two-wing flue, and then carries out heat transfer through the two-wing flue, flows forward through the front smoke box, enters the convection tube after heat transfer, enters the economizer and dust collector at the end of the pot, and is sent to the chimney through the induced draft fan, and discharged into the atmosphere.
Industrial steam boiler feed water is completed by boiler feed pump, softened water by feed pipe economizer, and then into the boiler barrel, and then into the left and right header by the drop pipe. The water cooling walls on both sides absorb heat and vaporize to generate steam. The steam enters the steam separator in the pot and enters the heat flow through the main steam valve after separation. The pot barrel is composed of arched tube plate and threaded pipe, so that the pot barrel is changed from a quasi-rigid body to a quasi-elastic body, and the tension parts in the tube-plate area are eliminated to reduce the stress. The smoke pipe in the tube plate is changed from two return journey to single return journey, which solves the problem of crack in the tube plate.
This series of steam boilers adopt high-efficient heat transfer threaded pipe, which can enhance heat transfer effect, and achieve the characteristics of boiler heating up and boosting pressure quickly. Effectively improve the boiler thermal efficiency. Compact structure, compared with the same type of boiler, small size, saving investment in boiler house infrastructure. Stable operation, convenient adjustment and sufficient output. In addition, secondary air is arranged in front and rear arches to ensure the secondary combustion of fly ash after particle decomposition with high combustion efficiency.
Zozen Boilers production of biomass fired steam boilers, stable and efficient operation, reliable quality, model is complete. Also according to the drawings provided by customers, one-to-one customized services, welcome to consult procurement, we will be dedicated to serve you.