Biomass bundled fuel chain boiler

Abstract

The invention discloses a biomass bundled fuel chain boiler. The biomass bundled fuel chain boiler comprises a furnace arch structure and a feeding structure, wherein the furnace arch structure comprises a front arch, a middle arch and a rear arch which are sequentially arranged above a chain grate stoker; the middle arch is composed of vertical flame folding walls, the rear arch is composed of an arch wall and a fire stopping wall vertically extending upward, the fire stopping wall is arranged between the front arch and the middle arch, the lower part of the fire stopping wall is connected with the front end of the arch wall; the rear end of the arch wall is inclined downward, extends to a rear wall of a hearth and is connected with the rear wall of the hearth; a space between the front arch and the rear arch is a first combustion chamber, a space between the rear arch and the middle arch is a second combustion chamber, and a space between the middle arch and the rear wall of the hearth is a third combustion chamber; and the feeding structure comprises a feeding hole formed in the front arch, a wind shield which can be opened and closed is arranged at one end, located inside the hearth, of the feeding hole, and a conveying channel is paved at the feeding hole. The biomass bundled fuel chain boiler disclosed by the invention, by virtue of coordination of the furnace arch structure and the feeding structure, improves combustion temperature and combustion efficiency.

Description

technical field [0001] The invention belongs to the technical field of biomass combustion, and in particular relates to a biomass bundling fuel chain boiler. Background technique [0002] Biomass bundling fuel has moderate density, high production efficiency, good combustion effect and easy utilization. It is a better way of biomass combustion utilization and has become an important development direction of biomass combustion utilization technology. However, there are still few special equipment suitable for biomass bundling and burning, and domestic research in this area is still in its infancy. The current biomass boilers generally adopt the "L" type furnace arch of coal-fired boilers, that is, the front arch is high and short, and the rear arch is low and long. Through the cooperation of the front and rear arches, combustion is enhanced and the temperature in the furnace is increased. However, the "L" type boiler is not suitable for burning biomass bundled fuel, and the ...

AI Technical Summary

Problems solved by technology

The feeding method of hydraulic propulsion is suitable for the chain boiler of biomass bundling fuel, but because the existing hydraulic propulsion method is to directly push the bundled fuel into the furnace for combustion, and there is no windshield device at the feeding port, the chain grate and feeding The inlet is on the same level, which leads to air leakage and tempering easily due to the large feed inlet, resulting in lower furnace temperature, lower combustion efficiency, and prone to dangerous accidents. The feeding method is not ideal

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