Two-stage high-temperature preheated steam biomass gasification furnace

Abstract

The invention discloses a two-stage high-temperature preheated steam biomass gasification furnace. According to the invention, steam with a high temperature is used as a gasification agent. Fuel gas with high quality and high heat value is obtained through the gasification of the biomass. Meanwhile, active carbon, which is a byproduct, is produced. The gasification furnace is composed by a first reactor and a second reactor. The first reactor is a fixed bed gasification section, where volatile matters in feedings are removed. During the process, only high-temperature preheated pure steam provided by a high-temperature air generator is used. The second reactor is a spouted bed gasification section, where a high-temperature preheated mixture of air and steam is used for a complete cracking reaction and a tar breaking reaction. The biomass gasification furnace provided by the present invention has advantages of high gasification efficiency, high gasification speed, complete reaction, high utilance of raw materials, and is energy saving and environment protecting. The fuel gas produced by the gasification furnace has advantages of good quality and high heat value.

Description

technical field [0001] The invention relates to the field of biomass gasification, in particular to a two-stage high-temperature preheating steam biomass gasification furnace capable of performing a two-stage ultra-high temperature gasification operation on biomass. Background technique [0002] Biomass high-temperature air gasification technology is a high-tech in the field of fuel utilization and energy supply. It is of great significance to alleviate the energy crisis and improve environmental quality. It has been accepted by academia and industry in some developed countries such as Japan, the United States, and Western Europe. my country's research work in this area has just started, and there is not enough research on the high-temperature air gasification process itself. At present, there is no relatively complete experimental system that can be used for high-temperature air gasification research. Contents of the invention [0003] The technical problem solved by the p...

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Problems solved by technology

[0002] Biomass high-temperature air gasification technology is a high-tech in the field of fuel utilization and energy supply. It is of great significance to alleviate the energy crisis and improve environmental quality. It has been accepted by academia and industry in some developed countries such as Japan, the United States, and Western Europe. The research work in this area has just started in my country, and there is a lack of sufficient research on the high-temperature air gasification process itself. At present, there is no relatively complete experimental system that can be used for high-temperature air gasification research.

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