Biomass gasification low-emission hot blast stove

Abstract

The invention discloses a biomass gasification low-emission hot-blast stove which has the advantages of being simple in structure, wide in fuel variety applicability, convenient and fast to operate, high in combustion efficiency, low in emission, small in environmental pollution and the like. The biomass gasification low-emission hot-blast stove mainly comprises four parts, namely a hopper and feeding device area, a gasification area, a combustion area and a heat exchange area. Sealing connection is achieved through bolts and flanges, a formed flue gas and air channel is of a W-shaped structure, and the whole device is horizontally arranged. An ash chamber and a vertical ascending channel are arranged at the bottom, so that sufficient decomposition of tar is facilitated, and the gas heat value and fly ash sedimentation are improved. Combustion-supporting air is sprayed into a combustion area through a primary air nozzle and a secondary air nozzle to be mixed and combusted with fuel gas in a staged mode, the combustion temperature and the combustion speed are adjusted, a reductive flue gas environment is formed, meanwhile, a metal wire mesh with the surface covered with a catalyst material in a sintering mode is installed, surface combustion and catalytic reduction reaction are formed, the combustion efficiency is improved, and emission of nitric oxide is reduced.

Description

technical field [0001] The invention relates to a hot blast stove, and relates to a biomass gasification low-efficiency heating stove which adopts biomass fuel and can be widely used in tobacco, grain drying and industrial drying, agricultural greenhouses, industrial workshops, public venues and rural households, etc. Vent hot air stove. Background technique [0002] A hot blast stove is a device used to heat air. In the past, hot blast stoves used coal and other fuels, which had serious smoke pollution, low thermal efficiency, cumbersome manual operations, and large hidden dangers. In recent years, due to strict environmental protection management requirements, Some hot blast stoves use natural gas as fuel. Although the thermal efficiency has been improved and the smoke pollution has been improved, in recent years, due to the improvement of environmental protection standards in China, natural gas has been used as the fuel for production and domestic heating, resulting in la...

AI Technical Summary

Problems solved by technology

[0004] Compared with other carbon-containing energy sources, biomass has disadvantages such as low energy density, high degree of distribution dispersion, difficulty in collection and transportation, and difficulty in large-scale centralized treatment.

Due to the utilization and conversion of biomass energy by completely copying the technical ideas of petroleum refining, coal chemical industry and natural gas utilization, most of the existing devices have low efficiency and low benefit, and there are secondary problems of tar, ash, waste water and waste gas. pollution, in order to solve the above problems, there is an urgent need for a new type of environmentally friendly biomass gasifier, which mainly solves the following main problems:

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