Biomass gas combustion device used for industrial boiler

Abstract

The invention discloses a biomass gas combustion device used for an industrial boiler. The biomass gas combustion device used for the industrial boiler comprises an ignition channel, a primary wind channel, a fuel gas channel and a secondary wind channel, all of which are arranged concentrically from inside to outside, wherein the tail-end outlet of the primary wind channel is shrunk inwards to form a first shrinkage section and is provided with multiple first flow channels; the tail-end outlet of the primary wind channel is also provided with a primary wind swirler; the tail-end outlet of the fuel gas channel is provided with multiple second flow channels; the tail-end outlet of the secondary wind channel is shrunk inwards to form a second shrinkage section; a secondary wind swirler is arranged in the secondary wind channel and near the second shrinkage section; the arrangement of the first flow channels and the second flow channels enables the air at the tail-end outlets to be more sufficiently mixed with the fuel gas and enables the combustion reaction to be more complete, so that the combustion efficiency is improved efficiently; meanwhile, the air after passing through the primary wind swirler and the secondary wind swirler forms a recirculation zone which can suck partial high-temperature smoke, so that stable combustion of the fuel gas is guaranteed.

Description

technical field [0001] The invention relates to the technical field of gas burners, in particular to a biomass gas combustion device for industrial boilers. Background technique [0002] Biomass gasification technology is one of the utilization technologies of biomass energy. Biomass gas is a low calorific value gas, and its quality varies with the components of the gas. Traditional biomass gas is mostly used in combustion equipment with small scale, low power and low flame requirements. However, industrial boilers require high burner power, large output adjustability, good flame filling in the furnace, and no erosion of the flame diffusion diameter. Furnace wall, the existing biomass gas burners on the market often have problems such as poor stability, insufficient combustion, and insufficient output. These problems are very unfavorable for the promotion and application of biomass gas in the field of industrial boilers. , Wide adjustment range and good stability of the b...

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Problems solved by technology

Traditional biomass gas is mostly used in combustion equipment with small scale, low power and low flame requirements. However, industrial boilers require high burner power, large output adjustability, good flame filling in the furnace, and no erosion of the flame diffusion diameter. Furnace wall, the existing biomass gas burners on the market often have problems such as poor stability, insufficient combustion, and insufficient output. These problems are very unfavorable for the promotion and application of biomass gas in the field of industrial boilers. , wide adjustment range and good stability of the burner

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