A three-bed multifunctional biomass gasifier

Abstract

The invention relates to a triple-material-bed multifunctional biomass gasification furnace. An inclined light pipe water-cooled fixed material bed and an inclined light pipe water-cooled movable material bed are arranged in the gasification furnace box body. The light pipe water-cooled fixed material bed is connected with a circulating water tank outside the gasification furnace box body, is obliquely arranged below the feeding hole, and divides the interior of the gasification furnace box body into a pyrolysis gasification chamber and a burnout chamber left and right. The movable material bed pushes fuel from the pyrolysis gasification chamber to the burnout chamber. A movable material bed is divided into two parts, and the three material beds are formed by combining a light pipe water-cooled fixed material bed; wherein the two front material beds can be mutually converted according to the characteristics of fuel, so that the areas of the material beds are effectively increased, theregulation ratio of the thermal cracking load of the gasification furnace is increased, the temperature gradient is reduced, and the temperature distribution is uniform. In the system, local high-temperature coking and nitrogen oxide generated by heat are avoided, so that the adaptability of the fuel is wider, and efficient pyrolysis gasification and environment-friendly emission of the biomass fuel are achieved.

Description

technical field [0001] The invention relates to the field of gasifiers, in particular to a three-bed multifunctional biomass gasifier. Background technique [0002] Biomass refers to all renewable substances from animals and plants in organic matter except fossil fuels. Biomass energy is the solar energy fixed on the earth by the photosynthesis of plants. It is the only renewable carbon source for storing solar energy and is an important part of sustainable renewable energy. At present, biomass used as energy mainly refers to agricultural, forestry and other wastes, such as various crop straws, sugar crops, starch crops and oil crops, forestry and wood processing wastes, urban and industrial organic wastes, and animal manure Wait. Biomass energy is the earliest, largest and most direct energy source used by human beings. According to estimates by biologists, the earth's land produces 100-125 billion tons of biomass every year, and the ocean produces 50 billion tons of bio...

AI Technical Summary

Problems solved by technology

[0006] In the existing biomass gasification furnace, the feed and pyrolysis gasification are carried out in one furnace chamber, the degree of pyrolysis gasification of the fuel is low, and the temperature of the oxidation reaction layer area is uneven during the gasification process in the furnace chamber, which is easy to Cause local high temperature, lead to the formation of thermal nitrogen oxides, pollute the environment

The existence of local high-temperature areas leads to low ash melting point biomass fuels to produce coking surfaces that cannot operate normally, and the adaptability of fuels is poor

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