Biomass fuel expansion furnace for preparing expanded graphite

Abstract

The invention relates to a biomass fuel expansion furnace for preparing expanded graphite. The biomass fuel expansion furnace comprises a furnace body, wherein a combustion chamber is formed inside the furnace body; a second air duct is arranged between the combustion chamber and the inner wall of the furnace body; the outer layer of the furnace body is a heat-preservation layer; a graphite flowing expansion pipeline of which one end penetrates through and extends outside the combustion chamber is arranged at the upper part of the furnace body; a biomass fuel feeding hole which is communicated with the combustion chamber is formed in the side wall of the furnace body; a first air duct which is communicated with the combustion chamber and the external environment is arranged inside the furnace body; a slag outlet which is communicated with the combustion chamber is formed in the bottom of the furnace body; an air outlet is formed in the top of the furnace body. The biomass fuel expansion furnace is applicable to biomass fuel to provide a heat source, SO2 discharge can be reduced, the dust standard can be met with low cost, NO<x> generation is also reduced, PM2.5 discharge is reduced, and the idea of low carbon and environment protection can be met; the biomass fuel expansion furnace does not affect the chemical components of expanded graphite worms in a sealed flowing pipeline, and has benefits for later procedures using expanded graphite.

Description

technical field [0001] The invention relates to the field of graphene preparation equipment, in particular to a biomass fuel expansion furnace for preparing expanded graphite. Background technique [0002] Graphite and carbon products have excellent performance and are widely used, and the production capacity and benefits are showing a rapid growth trend. With the rapid development of my country's metallurgy, chemical industry, machinery, medical equipment, nuclear energy, automobile, aerospace and other industries, the demand for graphite and carbon products in these industries continues to grow, and my country's graphite and carbon product industry will maintain rapid growth. [0003] In actual work, from graphite to its finished products, it generally needs to undergo a heating and expansion process, so as to take advantage of its high temperature resistance and high wear resistance. [0004] The existing graphite expansion furnaces in China use coal, gas, fuel oil or el...

AI Technical Summary

Problems solved by technology

[0005] However, using coal, gas or oil as a fuel to provide a heat source for the graphite expansion process, in the process of heating the graphite expansion furnace, fuel combustion produces a large amount of greenhouse gas CO 2 , while producing a large amount of SO 2 , NOx and a large amount of dust, and the sulfur-containing gas is attached to the graphite worms, resulting in a great increase in the sulfur content in the graphite worms, which seriously affects the yield of the follow-up process using expanded graphite

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