Biomass particle combustion apparatus and combustion method for same

Abstract

The invention discloses a biomass particle combustion apparatus and a combustion method for the same. The apparatus comprises a vertical type hearth, a feeding pipe is arranged above the hearth, the feeding pipe is connected with an external charging device, and the hearth is internally provided with an ignition device. The apparatus is characterized in that the hearth is internally provided with an ash damper; a rotary ash fork is arranged at the center of a flat furnace bottom plate at the bottom of the hearth; an ash falling port communicated with an ash box is arranged at the bottom side face of the hearth right below the ash damper; one side of the hearth is provided with a fire tube communication port connected with an internally communicated fire tube so as to form a combustion area, the bottom and both sides of the ash damper are all connected with the internal wall of the hearth, the bottom of the ash damper extends upwards from the lower end of the fire tube communication port and the top of the ash damper is higher than the upper end of the fire tube communication port, and a secondary air spray pipe communicated with a secondary air channel is arranged in the fire tube.

Description

technical field [0001] The invention relates to a biomass particle combustion device and a combustion method thereof, belonging to the technical field of biomass energy and energy saving. Background technique [0002] Fuel-fired gas boilers and gas (oil) burners used in industry have high fuel costs, and the use of high-grade fuel for combustion causes a lot of waste. Biomass such as crop stalks and wood processing residues has the characteristics of wide distribution, large reserves, renewable, and low cost. The pellet fuel pressed by molding equipment has the advantages of regular shape, uniform size, and good fluidity, and is suitable for long-term storage. And long-distance transportation, its combustion performance is much better than that of loose biomass, and has broad application prospects. Using compressed biomass particles as fuel for boiler combustion can replace fuel gas and has a very large market. One of the characteristics of biomass pellet fuel is low fixed...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of insufficient combustion, low combustion efficiency, high smoke and dust content, easy slagging and particle ash corrosion equipment during the use of existing biomass pellet fuels, the present invention proposes a solid biomass pellet fuel in the combustion process. Phase and gas phase staged combustion, automatic slag and ash discharge, and a combustion device that directly outputs high-temperature flame and flue gas, and can be directly connected to boilers, industrial kilns and other energy-consuming equipment

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