Biomass gasifier

Abstract

The invention discloses a biomass gasifier, comprising a gasifier body, a grate, an ash chamber, a support for supporting the gasifier and an ash discharging mechanism, wherein, the grate is arrangedin the gasifier body; the ash chamber is positioned below the gasifier body; the grate is in a flat structure with no hole in the middle; an ash discharging hole is arranged at the edge part at whichthe inner walls of the grate is connected with the gasifier body; an ash poking mechanism used for poking the ash residue on the grate into the ash discharging hole is additionally arranged on the grate; and the ash poking mechanism is connected with an ash poking drive mechanism which is arranged in a shield positioned below of the grate. By adopting the ash poking drive mechanism to drive the ash poking mechanism, the invention can realize the purpose of continuous ash discharge of ash residue on the grate, is beneficial for successfully carrying out the chemical reaction of biomass raw materials to improve the work efficiency of the gasifier, the middle part of the gasifier is in a flat structure with no hole, thereby avoiding the defect of materials leakage of the existing grate; and the shield arranged the ash chamber below the grate is used for protecting the ash poking drive mechanism.

Description

technical field [0001] The invention relates to a gasification furnace, in particular to a biomass gasification furnace, especially suitable for biomass raw materials such as rice husks with small particles and difficult to bridge. Background technique [0002] Biomass, coal and other hydrocarbons are the most important type of storable energy produced directly or indirectly through photosynthesis on the earth, especially biomass energy. One of the most worthy of development and utilization of renewable energy. [0003] Gasification is one of the important ways to convert and utilize biomass energy and coal. The fixed bed gasifier is the type of gasifier that has the lowest requirements on the characteristics of raw materials containing hydrocarbons. Important components with excellent performance. [0004] Such as figure 1 As shown, it is a schematic diagram of the overall structure of a downdraft gasifier in the prior art. The gasifier 1 includes a furnace body 11, an a...

AI Technical Summary

Problems solved by technology

[0005] (1) It does not have the function of continuous ash discharge, and ash and slag are easy to accumulate on the grate, resulting in low working efficiency of the gasifier;

[0006] (2) Since the combustible gas produced by the gasifier needs to be led out through the through hole of the grate, and the accumulation of ash and slag can easily block the through hole, resulting in the inability of the combustible gas to pass through, thus directly affecting the gas production capacity of the gasifier;

[0007] (3) Several through holes provided on the grate often cause smaller biomass raw materials such as chaff to leak from the through holes, resulting in the defect of material leakage;

[0008] (4) The structure of the existing grate is very simple, and it is difficult to add an automatic control system to it to control the speed of ash discharge, so the working efficiency of the existing gasifier cannot meet the requirements of modern production automation

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