Multi-pass biomass pellet combustion technology and multi-pass biomass pellet combustion device

Abstract

Disclosed are a multi-pass biomass pellet combustion technology and a multi-pass biomass pellet combustion device. Three fire stopping walls are arranged above an inner container of a biomass combustor, biomass pellet combustion flames form four passes under action of the three fire stopping walls, combustion stroke is increased, combustion time is lengthened, and sufficient combustion of biomass pellets is guaranteed. A feeding port, a primary-air inlet, a fire outlet and an igniter of the device are fixed on the cylinder wall of the inner container of the biomass combustor, and a fire grate and the three fire stopping walls are fixed in a hollow cavity of the inner container of the biomass combustor. Biomass pellets enter the fire grate in the biomass combustor through the feeding port and start to be combusted under action of primary air, the stroke is increased remarkably when the combustion flames are blocked off by the three fire stopping walls, the biomass pellets are combusted quite sufficiently, and the combustion flames reach the fire outlet finally and are further combusted under action of secondary air, so that sufficient combustion of the biomass pellets is achieved without emission of carbon monoxide and other harmful substances, and the purposes of renewable energy development and environmental protection are achieved.

Description

technical field [0001] The invention relates to a biomass combustion process and device, in particular to a biomass particle multi-return combustion process and device. Background technique [0002] Fossil energy pollutes the environment, and new energy, especially renewable energy, has become the development direction of the energy industry. Biomass has the characteristics of high volatile content, high carbon activity, low nitrogen and sulfur content, and low ash content. It is a clean and low-carbon energy source with dual attributes of environmental friendliness and renewable energy. It is a high-quality environmentally friendly fuel that can replace conventional fossil energy. At present, my country's biomass energy is gradually being applied, but the existing biomass combustion technology and devices mainly adopt a single-pass combustion method, which has a short combustion process of biomass particles, low burn-out rate, large residues, high fuel waste rate, and smoke...

AI Technical Summary

Problems solved by technology

[0003] The existing biomass combustion process and device have problems such as insufficient combustion, low utilization rate of biomass particles, high concentration of flue gas and dust pollution, etc. The present invention provides a multi-return combustion process and device for a biomass burner

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