Combustion device for biomass granular fuel

Abstract

The invention relates to the technical field of clean combustion energy, and relates to a device for efficiently combusting biomass granular fuel. A primary combustion chamber, a secondary combustion chamber and a burnout chamber are arranged in turn to form a communication structure and combined to form a combustion device main body; the bottom of the primary combustion chamber is manufactured with a primary air chamber with a mesa structure, the bottom end of the primary combustion chamber is provided with a periodical ash outlet and a blast pipe respectively, the lower part of the left sideof the primary combustion chamber is provided with a spiral feeding inlet, and the top space of the primary combustion chamber is provided with a top cap cavity; and the upper part of the right sideof the primary combustion chamber is provided with a downward obliquely-bent smoke guide pipe, an outlet of the smoke guide pipe extends to the middle part of the secondary combustion chamber, the topof the right side of the secondary combustion chamber is provided with an inner component in an open mode, the inner component butts the burnout chamber and the secondary combustion chamber in a communication mode, the bottom end of the secondary combustion chamber is provided with a mesa secondary air chamber and a periodical ash outlet pipe, and the bottom of the secondary air chamber is provided with a blast pipe. The combustion device has the advantages of simple structure, full combustion, high efficiency, good dust removing effect, stable and reliable running, and remarkable energy-saving effect.

Description

Technical field: [0001] The invention belongs to the technical field of clean combustion energy, and relates to a device for high-efficiency combustion of biomass particle fuel, so as to realize that the biomass particle fuel replaces coal combustion and is used in small and medium-sized boilers. Background technique: [0002] At present, urban heating has increasingly relied on the centralized heating of thermal power plant heat sources, but there are still heating "dead spots" far from the heating center, the cost of laying pipe networks is high, and the heat loss is large, which is not worth the candle; Thermal independent units such as hotels, schools, hospitals, swimming pools, etc. need flexible heating, and central heating is not suitable. Therefore, at present, there are still a lot of retail heat supply households in cities, and small self-provided heating oil and gas boilers are commonly used. The pressure faced by these heat dissipation users includes the pressure...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, seek to design and provide a combustion device with high automation, high thermal efficiency, sufficient combustion, and suitable for small and medium capacity boilers to solve the problem of fixed grate, chain furnace and reciprocating grate. Problems such as high smoke and dust, low combustion efficiency, and easy coking when burning biomass pellet fuel in the furnace layer

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