An integrated biomass gasifier with dedusting and decoking

Abstract

The invention relates to a dedusting and decoking integrated biomass gasifier which comprises a biomass gasifier body, a feeding auger, an air inlet system, a stove ash cooling system and a discharge system, wherein a fuel uniform distributor is arranged in the middle in the biomass gasifier body; a first tar catcher, a second tar catcher, a dense screen mesh, a tar cracking catalyst layer, a tar distributor and a tower-shaped grate are sequentially distributed from top to bottom in the middle of the interior of the biomass gasifier body; and the bottom of the biomass gasifier body is connected with the air inlet system, the stove ash cooling system and the discharge system. The dedusting and decoking integrated biomass gasifier can recycle tar directly in the stove, thus effectively avoiding the problem of environment pollution caused by out-furnace disposal; the biomass fuel layer is compacted by using the dense screen mesh to remove fine dust in the fuel; and the effective components of the fuel are added, so that the gas calorific value is increased.

Description

technical field [0001] The invention relates to the field of biomass power generation, in particular to a biomass gasification furnace integrating dust and coke removal. Background technique [0002] With the rapid development of my country's economy, the problems of energy shortage and environmental pollution are becoming more and more severe, and human beings are eagerly seeking new renewable energy sources. Biomass fuel is a renewable resource, and biomass energy ranks fourth after coal, oil, and natural gas in terms of its energy equivalent. [0003] my country's biomass resources are extremely rich, with an annual output of more than 800 million tons of standard oil equivalent. The total amount of energy exceeds 30EJ (E=1018). With the development of my country's agriculture and forestry, especially with the development and popularization of fast-growing charcoal forests, there will be more and more biomass resources in my country, which have great potential for devel...

AI Technical Summary

Problems solved by technology

[0004] At present, the main problems in the gas produced by biomass gasifiers in my country: (1) The tar content in the gas is high, the production process needs to be decoked, and a large amount of tar-containing wastewater and solid waste will be generated, the production environment is poor, and the gas transportation process is easy (2) The gas needs to be washed with water and dedusted, which will produce a large amount of phenol-containing wastewater. The production environment is harsh and may cause environmental pollution; (3) It is inconvenient to feed the gasifier. Cause gas leakage and a small amount of material entrained in the gas; (4) The calorific value of the gas is low, and the content of combustible gas components in the gas is low

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