Coking-resistant biomass combustor

Abstract

The invention provides a coking-resistant biomass combustor. The coking-resistant biomass combustor comprises a combustion furnace, a feeding system, an air supply system and an intelligent control system. A combustion chamber, a setting chamber and a chain grate stoker are arranged in the combustion furnace. The chain grate stoker is arranged between the combustion chamber and the setting chamber and is driven by the motor to conduct uniform motion. A nozzle is arranged on one side of the combustion chamber and the other side of the combustion chamber is connected with the feeding system. The feeding system comprises a hopper and a spiral feeding machine. The air supply system comprises a fan and air ducts used for air supply. The air ducts comprise the first air duct, the second air duct and the third air duct. The biomass combustor is provided with the chain grate stoker. Biomass fuel is combusted on the chain grate stoker so that under the condition that generated coke is not cooled, the coke can also fall into the setting chamber along with the uniform motion of the chain grate stoker and the potential safety hazard that coking on the chain grate stoker is generated can be eliminated. Meanwhile, three-time air supply is adopted, so that the fuel is combusted more thoroughly and the combustion efficiency is improved.

Description

technical field [0001] The invention belongs to the field of combustion equipment, and relates to a biomass burner, in particular to an anti-coking biomass burner. Background technique [0002] Biomass burner is a kind of biomass semi-gasification automatic control burner, and it is a biomass pyrolysis burner that uses biomass particles as fuel. Biomass fuel engine has the advantages of high thermal efficiency and low smoke exhaust pollution. Its application in foreign countries began in the 1980s, and countries such as Sweden, Denmark, Austria and Germany have certain applications. There are still few researches on biomass burning equipment in our country, and it has not yet reached large-scale application. The main reason is that there are many problems in domestic biomass burning machines, which are mainly reflected in the following two aspects: On the one hand, the fuel adaptability of biomass burning machines Narrow, only suitable for wood pellets, when straw pellets a...

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Problems solved by technology

There are still few researches on biomass burning equipment in our country, and it has not yet reached large-scale application. The main reason is that there are many problems in domestic biomass burning machines, which are mainly reflected in the following two aspects: On the one hand, the fuel adaptability of biomass burning machines Narrow, only suitable for wood pellets, when straw pellets are used, problems such as coking, alkali metal and chlorine corrosion, and serious fly ash in the equipment are prone to occur. The coking problem not only affects the thermal performance of the combustion equipment, but even endangers the safety of the combustion equipment. In view of the serious problem of coking in existing biomass burners, how to optimize the structure of key components of the equipment, reduce the degree of coking, and improve fuel adaptability is the biggest problem facing biomass burners at present; on the other hand, the current biomass burning Machine products are complex in structure and expensive, which is not conducive to large-scale promotion

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