Normal-pressure fixed bed biomass gasification furnace and biomass normal-pressure gasification method

Abstract

The invention provides a normal-pressure fixed bed biomass gasification furnace and a biomass normal-pressure gasification method. The gasification furnace comprises a gas collecting chamber, condensation chambers, a deoiling chamber, a dust removal chamber, a gasification chamber, a doughnut shape-like gasification pipeline, a first gasification agent pipeline, a second gasification agent pipeline, a drying preheating chamber, a screw pushing mechanism, a feeding conveying mechanism and a gasification agent chamber, the doughnut shape-like gasification pipeline is arranged in the drying preheating chamber and the gasification chamber, the screw pushing mechanism is arranged in the doughnut shape-like gasification pipeline, the gasification agent chamber is connected to the first gasification agent pipeline and the second gasification agent pipeline, the first gasification agent pipeline extends along the central axis inside the doughnut shape-like gasification pipeline, the second gasification agent pipeline extends in a manner clinging to the outer wall of the doughnut shape-like gasification pipeline, each of the first gasification agent pipeline and the second gasification agent pipeline is provided with a plurality of gasification agent outlets, the dust removal chamber is arranged above the gasification chamber, the deoiling chamber is arranged above the dust removal chamber, the condensation chambers are arranged above the deoiling chamber, and the gas collecting chamber is arranged above the condensation chambers. The gasification furnace has the advantages of integral integration, high gasification efficiency and wide application range.

Description

technical field [0001] The invention relates to the technical field of gasification of carbonaceous substances, in particular to an atmospheric pressure gasification furnace and a gasification method, more specifically to an atmospheric pressure fixed bed gasification furnace and a gasification method thereof, especially to an atmospheric pressure A fixed-bed biomass gasification furnace and a biomass atmospheric pressure gasification method. Background technique [0002] The gasification of carbonaceous substances can produce combustible gases (hydrogen, carbon monoxide, etc.) for industrial use, and has broad application prospects in the field of modern chemical technology. Bed gasifiers, especially fixed-bed gasifiers with normal pressure, have a basic structure including a gasifier and an independently installed dust removal and purification device. The gasification agent is also input through the bottom of the gas output port. The gasification efficiency of this gasifi...

AI Technical Summary

Problems solved by technology

In order to overcome the disadvantages of low gasification efficiency and inconvenient control and layout commonly found in biomass gasifiers in the prior art, the present invention proposes a new structure of atmospheric fixed-bed biomass gasifier

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