A method for removing impurities in the production of biomass straw charcoal

Abstract

The invention discloses a method for removing impurities in the production of biomass straw charcoal. The straw containing solid impurities is directly transported to a pyrolysis furnace for pyrolysis treatment, and then the generated biomass straw charcoal and solid impurities are transported Into the screening mechanism set on the lifting device, the biomass straw charcoal enters the lifting device by using the screening mechanism, and the solid impurities are separated. Because the present invention combines the sub-sieving mechanism and the lifting device, it does not occupy the equipment space alone, and the process is closely connected. The impurities fall freely in the sub-sieving mechanism due to gravity, and the straw charcoal is light, and directly enters the sub-sieving mechanism from the screen of the sub-sieving mechanism. In the dust cover, and enter the next process through the elevator, the biomass straw charcoal and solid impurities are completely separated, and the shape of the biomass straw charcoal after separation remains intact, and the purity of the final product produced fully meets the customer's requirements.

Description

technical field [0001] The invention relates to a production method of biomass straw charcoal, in particular to a method for removing impurities in the production of biomass straw charcoal. Background technique [0002] In order to further protect the environment, existing technology studies how to use crop straws with high added value. Biomass straw charcoal is one of the product forms. However, in the production of biomass straw charcoal, the biggest problem is the shortage of raw materials. If there are too many impurities, if they are not properly treated and separated, it will directly affect the purity of biomass straw charcoal products and reduce the selling price. [0003] In agricultural production, a large amount of stalks are scattered in the field after the fruits of crops such as wheat, soybean, and corn are harvested. After mechanical bundling or farmers voluntarily leaving the field for storage, these processes often bring solid impurities such as rubble, lum...

AI Technical Summary

Problems solved by technology

After mechanical bundling or farmers voluntarily leaving the field for storage, these processes often bring solid impurities such as rubble, lumpy soil, iron wire, bolts, nuts, etc. into it, which cannot be effectively separated, resulting in these solid impurities being wrapped in the straw. To the straw storage point

It was originally thought that the straw crushing process can be separated well, but practice has found that during the straw crushing process, the solid impurities are not easy to separate due to the influence of the straw’s low density, high ash content, and easy wrapping and “lapping”.

The crushed straw will be directly transported to the pyrolysis furnace for treatment. The biomass straw charcoal produced after pyrolysis and these impurities will be output together with the mechanical power and cooled to the pulverizer for pulverization, resulting in damage to the screen and pulverizer disc of the pulverizer, increasing the Reduced maintenance frequency and operating costs

[0004] Therefore, there is a need for an effective screening of solid impurities in biomass straw charcoal, so that it cannot enter the subsequent process without increasing equipment and changing the process route, but there is no report on related technologies in the prior art

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