Automatic-ash discharging biomass particle combustor

Abstract

The invention discloses an automatic-ash discharging biomass particle combustor. The main structure of the combustor is characterized in that a combustion chamber has a cavity, wherein the lower portion of the cavity is in a tapered shape, the middle portion is in a column shape, and the upper portion in a tapered narrow shape. A lower portion of a combustion cup is communicated with a stock bin by a screw conveyer; and the upper end of the combustion chamber is open. A motor drives the screw conveyer to feed fuel into the bottom of the combustion cup. Ash at the upper opening of the combustion cup is ejected out of the combustion cup by new fuel below to become falling ash; the falling ash passes through an ash leakage hole and falls out of the combustion chamber into an ash box. According to the invention, the tapered combustion cup and the screw conveyer are combined ingeniously; and with utilization of a screw maze type air channel and multi-stage air distribution, problems of over high volatile substance content of multi-ash content biomass, easy coking and easy scorification, and air channel blocking and slagging can be solved, so that continuous and automatic combustion of high-ash content biomass combustion is realized. Moreover, the combustor can work stably and reliably.

Description

technical field [0001] The present invention relates to a burner, in particular to a multi-ash biomass particle burner. Background technique [0002] In recent decades, with the increase in the concentration of greenhouse gases in the atmosphere, global warming, melting of glaciers and the frequent occurrence of various disasters, people have realized the importance of clean energy, and began to study high-efficiency clean and renewable energy. However, the focus of global research is on pure fuels. 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 ash-rich biomass. Therefore, the study of multi-ash biomass fuels has become an important topic. Since most biomass is agricultural and forestry wastes such as straw and shrubs, among which Na, K, Si and other volatile substances are dozens of times higher than pure wood chips, and impurities such as dust and sand...

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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