Biomass environment-friendly hot blast boiler

Abstract

The invention relates to a biomass environment-friendly hot blast boiler. The biomass environment-friendly hot blast boiler comprises a boiler body, a combustion chamber, a feeding system, a slagging and ash removing system, a combustion-supporting oxygen conveying air inlet system, a flue gas channel system and a hot blast channel system. Fuel enters from the lower portion of a preliminary combustion volatilization decomposition chamber, the fuel utilization rate is increased through layered and segmented combustion, and energy source wasting is avoided; air is supplied through the multi-layer multi-angle combustion-supporting oxygen conveying air inlet system, the oxygen conveying amount in the fuel combustion process is ensured, the combustion speed is increased, and the combustion quality is improved; air is supplied through a porous air supply pipe and a material trough air supply liner, and the effects of being free of combustion dead angle, balanced in oxygen supply and sufficient in combustion are achieved; the fuel is pulled down through jacking force of a feeding machine after preliminary combustion decomposition and is combusted again through a re-combustion chamber, and combustible gas in fuel gas is thoroughly burned out through a secondary lighting-up tuyere; after entering the boiler body, natural air is heated up layer by layer through a low-temperature air channel, a low-temperature air collecting box, a medium-temperature air channel, a medium-temperature air collecting box, a high-temperature air channel and a high-temperature air collecting box; and heat exchange is thorough, and energy sources are saved.

Description

technical field [0001] The invention relates to the technical field of boiler equipment, in particular to a biomass environment-friendly hot air boiler. Background technique [0002] Boiler is a kind of heating equipment commonly used in daily production and life. In the prior art, organic heat carrier boilers are mainly coal-fired, adopt layered combustion mode, and the combustion equipment is in the form of fixed hand furnace, chain furnace, reciprocating grate furnace and vibrating grate furnace. The existing circulating fluidized bed boiler, Although it is a dynamic combustion, the burnout rate is high, but the high positive pressure combustion dust is large. Although a separator is added at the outlet of the furnace to collect part of the soot and return it to the furnace for combustion, the boiler has a large concentration of circulating soot and wear on the heating surface. serious, low coal combustion rate, and serious environmental pollution. Contents of the inve...

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Problems solved by technology

In the prior art, organic heat carrier boilers are mainly coal-fired, adopt layered combustion mode, and the combustion equipment is in the form of fixed hand furnace, chain furnace, reciprocating grate furnace and vibrating grate furnace. The existing circulating fluidized bed boiler, Although it is a dynamic combustion, the burnout rate is high, but the high positive pressure combustion dust is large. Although a separator is added at the outlet of the furnace to collect part of the soot and return it to the furnace for combustion, the boiler has a large concentration of circulating soot and wear on the heating surface. Serious, low coal combustion rate, serious environmental pollution

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