Device and method for preparation of biomass ultrafine powder

Abstract

The purpose of the present invention is to provide a device and a method for preparation of a biomass ultrafine powder. The device for preparation of the biomass ultrafine powder comprises a coarse crusher, a biomass-specialized ultrafine crusher, a pulse bag deduster, a double-plate baiting valve and an induced draught fan. The coarse crusher and the biomass-specialized ultrafine crusher are connected through a pipeline. The biomass-specialized ultrafine crusher is provided respectively with, from bottom to top, a crushing chamber and a grader. The biomass-specialized ultrafine crusher and the grader are configured into an integral structure, and crushing and grading can be continuous and synchronous. The beneficial effects of the invention are that: fed materials are crushed into powders with non-uniform particle sizes by a millstone of the crushing chamber, the powders with non-uniform particle sizes are graded into a qualified fine powder and an unqualified coarse powder by the grader, the unqualified coarse powder falls back to the crushing chamber for continued crushing, the qualified fine powder enters into the pulse bag deduster from the grader through the pipeline, and the irregular crystal powder is obtained through colleting by the double-plate baiting valve, so simple and convenient screening can be realized; at the same time, the biomass-specialized ultrafine crusher and the grader are configured into an integral structure, so that crushing and grading can be continuous and synchronous; and dust-containing exhaust gases are discharged by use of the induced draft fan, and the pollution of the environment can be greatly reduced.

Description

technical field [0001] The invention relates to a biomass ultrafine powder preparation device and a preparation method thereof, belonging to the field of ultrafine powder preparation. Background technique [0002] Pulverization technology plays an important role in the conversion and pre-treatment of biomass energy. Only the continuous progress and improvement of pulverization processing technology can effectively promote the extensive, efficient and sustainable utilization of biomass energy in my country. Generally speaking, the finer the particle size of the crushed biomass raw material, the better the post-processing and utilization effect. However, due to the characteristics of light specific gravity and high fiber content of biomass, most of the existing biomass crushing equipment uses traditional hammer mills, wood mills, etc. Powder machine and other equipment instead, the particle size of the crushed material is coarse and cannot be adjusted, the production efficienc...

AI Technical Summary

Problems solved by technology

Generally speaking, the finer the particle size of the crushed biomass raw material, the better the post-processing and utilization effect. However, due to the characteristics of light specific gravity and high fiber content of biomass, most of the existing biomass crushing equipment uses traditional hammer mills, wood mills, etc. Powder machine and other equipment instead, the particle size of the crushed material is coarse and cannot be adjusted, the production efficiency is low, and it is difficult to meet the needs of production and research

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