Biomass boiler

Abstract

The invention discloses a biomass boiler. The biomass boiler comprises a biomass burner, a horizontal fire-tube boiler body and a boiler water inlet component. The biomass burner is connected with the horizontal fire-tube boiler body, a boiler furnace is arranged in the horizontal fire-tube boiler body, a bi-pass flue pipe and a tri-pass flue pipe are arranged in the boiler furnace, and the horizontal fire-tube boiler body is provided with a smoke discharge outlet at the tail. The bottom of a rear smoke tank of the tail of the boiler furnace is provided with an ash discharge outlet and an ash discharge door. The boiler water inlet pipe component is arranged above the fire furnace and comprises a water tank, a water delivery pipe, a slag stop pipe, a water pipe air bubble, a slag stop pipe water discharge pipe and a water tank discharge pipe. Circulation of water flow in the water tank and the slag stop pipe is made sure, blockage rate of a flue is decreased, and consequently, heat exchange effect can be ensured, boiler capacity is improved, occurrence rate of equipment faults is reduced and for one thing, service life of the burner is prolonged.

Description

technical field [0001] The invention relates to a boiler, in particular to a biomass boiler. Background technique [0002] At present, the boilers using biomass pellet fuel are mostly chain furnaces, circulating fluidized bed furnaces and small vertical fire tube furnaces. Among them, chain furnaces have large heat loss and low thermal efficiency, while circulating fluidized bed furnaces have complex structures and large volumes. It usually takes up a large space and requires a large amount of installation work. The vertical fire tube furnace is mainly used for small steam and hot water boilers, and its applicability is relatively narrow; The slag is brought into the boiler and piled up at the tail of the furnace. Over time, it will directly lead to poor flue gas flow in the furnace, poor combustion effect of the burner, incomplete combustion of fuel, rapid damage to the refractory parts of the burner due to smoldering, and smoke. Due to the slowing of the smoke velocity, t...

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Problems solved by technology

[0002] At present, the boilers using biomass pellet fuel are mostly chain furnaces, circulating fluidized bed furnaces and small vertical fire tube furnaces. Among them, chain furnaces have large heat loss and low thermal efficiency, while circulating fluidized bed furnaces have complex structures and large volumes. It usually takes up a large space and requires a large amount of installation work. The vertical fire tube furnace is mainly used for small steam and hot water boilers, and its applicability is relatively narrow; The slag is brought into the boiler and piled up at the tail of the furnace. Over time, it will directly lead to poor flue gas flow in the furnace, poor combustion effect of the burner, incomplete combustion of fuel, rapid damage to the refractory parts of the burner due to smoldering, and smoke. Due to the slow smoke velocity, the pipes have serious ash accumulation, poor heat transfer effect, obvious decline in boiler output and many other problems, which greatly reduce the overall energy efficiency of the boiler.

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