Biomass semi-gasification furnace and manufacturing method thereof

Abstract

The invention discloses a biomass semi-gasification furnace comprising a burner, a vaporizing chamber, a filling mouth, a flame bridge, an ash receiving and ventilating chamber, a secondary air inlet channel, a panel fire surrounding cover and a flue, a circumference space, an insulating layer, a fireproof ring, an air blower mouth and the like. The invention prefabricates accessories, such as the burner, the vaporizing chamber, the panel fire surrounding cover, the flue, the filling mouth, the secondary air inlet channel, the flame bridge and the like which have different specifications and are matched as well as prefabricates square or round metal furnace periphery or cooking bench periphery built by bricks and mud; all accessories are connected, and the insulating layer is built by fire clay. The invention eliminates a dead space formed on the joint of the burner and the vaporizing chamber and increases the flammable gas rising flowability; secondary air inlet is high-temperature wind so as to greatly improve combustion-supporting efficiency; third air inlet supplements the insufficiency of secondary supply air rate when fuel with a higher gas production rate is burnt, so that biomass raw material can be more evenly and completely burnt. The accessory of the product of the invention can be produced in a standardized and industrialized mode, thus lowering cost and bringing convenience for popularizing products.

Description

technical field [0001] The invention relates to processing equipment for crop waste, in particular to a biomass semi-gasification furnace. The invention also relates to a preparation method of the biomass semi-gasifier. Background technique [0002] Biomass gasifier is a domestic device for processing crop waste that has emerged in this century. At present, there are basically two kinds of common biomass gasifiers, one is full biomass gasifier, and the other is semi-biomass gasifier. The biggest defect of the biomass full gasifier is that it produces a large amount of tar, waste water, tar vapor, dust and harmful gas emissions during use, which can easily cause gas pipelines and burners to be blocked, resulting in tar and uncontrollable part of carbon monoxide The gas will be directly discharged into the atmosphere, causing secondary pollution. Therefore, it is difficult to promote the biomass full gasifier. The existing biomass semi-gasification furnace is generally equi...

AI Technical Summary

Problems solved by technology

The biggest defect of the biomass full gasifier is that it produces a large amount of tar, waste water, tar vapor, dust and harmful gas emissions during use, which can easily cause gas pipelines and burners to be blocked, resulting in tar and uncontrollable part of carbon monoxide The gas will be directly discharged into the atmosphere, causing secondary pollution. Therefore, it is difficult to promote the biomass full gasifier

The existing biomass semi-gasification furnace is generally equipped with a combustion chamber, a gasification chamber, an air chamber and a secondary ventilation pipe from top to bottom in the furnace body. The gasification chamber and the air chamber are separated by a furnace bridge. The working principle is : The air chamber provides air for the gasification chamber, and the biomass smolders in the gasification chamber to generate combustible gas. After the combustible gas rises to the combustion chamber, it mixes with the air provided by the secondary air hole and burns fully, which solves the problem of secondary pollution. However, there are also some defects in the existing biomass semi-gasification furnace, such as: (1) the gasification chamber is straight, which affects the gas production and combustion effect; (2) the cold air is sent through the secondary ventilation pipe, The combustion efficiency is low; (3) The area of ​​the air inlet channel is small or the ventilation is not smooth, and the combustion effect is poor; (4) An external fan is used to blow air for air supply, and the air supply is too large to be controlled, which affects gas production, wastes fuel, and generates dust when pouring smoke , pollute the air, if the blower is not used, for the fuel with high moisture, low heat mass, low air permeability, and decay, it will only smoke but not catch fire, which is too slow and time-consuming; (5) Long-term use will block the secondary air distribution channel, resulting in The wall of the air chamber is cracked and the air enters, which affects the gas production and normal combustion

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