Vertical environment-friendly boiler for triple dedusting burning wood and biomass particle fuel in boiler

Abstract

The invention relates to a vertical environment-friendly boiler for triple dedusting burning wood and biological particle fuel in a boiler, belonging to heating technology. The invention is used for burning wood and biological particles to obtain hot water or steam, and overcomes the defects of black smoke emission, low thermal efficiency, and the like of the similar traditional boilers. The boiler comprises a wind chamber, a fire grate, a carbon powder and gas burning hearth, a first wind inlet, a secondary wind inlet, and a heat exchanger above the hearth. The boiler is characterized in that the hearth is provided with a porous boiler crown of an inclined air vent; the upper end of an inner liner is provided with a smoke blocking wall; a downward screwed smoke tube is arranged between the wall of the inner liner and a lower end socket; an upward screwed smoke tube penetrates through an upper closing plate and a lower closing plate; and a heat exchanger seat of a smoke diversion dedusting chamber in the shape of a ring cavity is arranged on the circumference of the lower end of the heat exchanger. The invention has the advantages of sufficient burning of carbon powders, sufficient gasification and high thermal efficiency. Smoke is dedusted three times in the boiler, and the exhausted smoke has low dust capacity. The invention can be manufactured in a split mode, and is convenient to transport. The tonnage can be greatly increased.

Description

technical field [0001] The invention belongs to the technical field of boilers, and in particular relates to a vertical boiler burning woody biomass particle fuel. Background technique [0002] Biomass energy is a new type of clean and renewable energy vigorously promoted by the country. With the shortage of coal, oil, and natural gas resources and rising prices; increasingly stringent environmental protection emission requirements for boilers; and coal restrictions in some large and medium-sized cities, The utilization of biomass energy has been paid more and more attention. The use of vertical boilers is large and wide. It has the characteristics of small footprint, flexible start and stop operation, low boiler cost, convenient transportation and installation, easy operation and high degree of automation. At present, hotels, schools, government agencies, hospitals, and small businesses in some large and medium-sized cities all use vertical boilers that burn diesel, natura...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a three-time dust removal in the furnace and burn woody biomass pellet fuel vertical environmental protection boiler, overcome the existing woody biomass pellet fuel vertical boiler with insufficient carbon embers and high original dust concentration of the boiler, The dust removal effect in the furnace is poor, and black smoke is emitted; the heat transfer coefficient of the convection heating surface is low, and the thermal efficiency is low; negative pressure combustion, the combustion speed of combustible gas is slow, and the excess air coefficient in the smoke exhaust area is large, and the auxiliary equipment blower, induced draft fan and dust collector make the boiler The smoke and wind system is complex, high investment, large area, not easy to scale up, etc.

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