Discontinuous variable-pitch biomass particle fuel combustor

Abstract

The invention discloses a discontinuous variable-pitch biomass particle fuel combustor. The combustor is mainly structurally characterized in that the bottom of the combustor is a semi-circular long cavity, the ash discharging side of the semi-circular bottom is provided with an ash leaking port, a material pushing spiral shaft with discontinuous variable pitches is connected with a material pushing motor and installed in a combustion chamber, the pitch of the material inlet end of the material pushing spiral shaft is large, so the material inlet end is called a material pushing area, the pitch of the material outlet end of the material pushing spiral shaft is small, so the material outlet end is called a disturbance area, and the middle polished shaft area without spirals is called a static combustion area. According to the combustor, fuel is pushed to the static combustion area by the spirals in the material pushing area after being compacted by a compacting plate, the fuel is pushed to the disturbance area after being fully dried and combusted in the static combustion area, the fuel in the disturbance area rolls forwards and slowly moves while burning under the action of the spirals in the disturbance area until the fuel is completely combusted and falls off from the ash leaking port, and the fuel cannot coke due to the facts that the fuel cannot adhere in the whole process, and the situations of local air tightness and local high temperature cannot occur.

Description

technical field [0001] The invention relates to a burner, in particular to a burner for ash-rich biomass particles. Background technique [0002] In recent decades, with the increase of greenhouse gas concentration in the atmosphere, global warming, melting glaciers and frequent occurrence of various disasters, people have realized the importance of clean energy and started research on efficient clean renewable energy. However, the focus of global research is pure fuel, while in my country, various agricultural and forestry wastes equivalent to 700 million tons of standard coal are wasted every year, and agricultural and forestry wastes are high-ash biomass. Therefore, the study of multi-ash biomass fuel has become an important topic. Since most of the biomass is agricultural and forestry waste such as straw and shrubs, the Na, K, Si and other volatile substances are dozens of times higher than pure wood chips, and impurities such as dust and sand are mixed in the pellet pr...

AI Technical Summary

Problems solved by technology

Since most of the biomass is agricultural and forestry waste such as straw and shrubs, Na, K, Si and other volatile substances are dozens of times higher than pure wood chips, and impurities such as dust and sand are mixed in the pellet production process, so The content of ash and slag during combustion is high, and coking and slagging are serious, which can easily lead to burner blockage

Therefore, the currently used burners cannot achieve high-efficiency, automatic and continuous combustion

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