Method for making hemp stem charcoal powder

Abstract

The invention discloses a method for making hemp stem charcoal powder and belongs to the technical field of production of military charcoal and black powder charcoal. The method comprises specific process steps of raw material selection, chopping, primary drying, carbonization, quenching, secondary drying, cooling, crushing and packing, wherein the step of carbonization is carried out in three sections in a stage carbonization mode; the temperature of a first stage is 190-250 DEG C; the temperature of a second stage is 300-500 DEG C; the temperature of a third stage is 450-500 DEG C; the totalcarbonization time is 20-40 minutes; and the carbonization time ratio of the three stages is 1:2:1. According to the method disclosed by the invention, the carbonization temperature and the carbonization time of each stage are set according to different hemp types, so that ash contents can be reduced; in addition, through a unique quenching step, the carbonization pore density can be increased, pore sizes can be increased, and ash contents and volatile matter can be removed; and by setting drying temperatures and drying time after quenching, specific surface areas can be controlled, and the purposes of high yield and high quality can be achieved for different hemp types under most suitable conditions.

Description

Technical field [0001] The invention relates to the technical field of production of military charcoal and black gunpowder charcoal, in particular to a method for producing high-quality hemp stalk charcoal powder. Background technique [0002] Characteristics and applications of hemp carbon powder: 1. Adsorption and decomposition: Because the carbon itself has countless pores, the carbon pores can effectively absorb air and various floating substances in the carbon, as well as sulfide, hydride, and methanol. , Benzene, phenol and other harmful chemical substances play the role of absorbing, decomposing peculiar smell and deodorizing; 2. Sewage treatment and purification: some organic matter in wastewater is difficult to be oxidized and decomposed by microorganisms or general oxidation methods, such as phenol, benzene, petroleum and Its products, insecticides, detergents, synthetic dyes, amine compounds and many synthetic organic substances can reach various ideal standards after ...

AI Technical Summary

Problems solved by technology

Most of the existing carbon powder is produced by intermittent smoldering carbonization process, specifically from raw materials to drying, accumulation, smoldering, crushing, and finally packaging; In a built-in carbonization furnace, it burns to a certain extent and is isolated from the air to form anoxic smoldering. The disadvantage of this method is that the carbonization is uneven. The carbon powder rate is low, and the specific gravity is not uniform, and the pores are less

[0004] According to relevant information, carbon powder can be processed and produced by using various hemp stalks. Carbon powder is widely used in military industry, agriculture, medicine, household and other fields. Among them, military industry has higher quality requirements for carbon powder, and generally requires The specific gravity is 0.09-0.11, the pore density is high, the pore size is large, the volatile content of ash is very small, and the mesh number is large. Among them, the mesh number of the carbon powder is that the raw material can be pulverized with a pulverizer to achieve the required fineness, while for other There is no better process to achieve the parameter requirements. At present, the production of carbon powder at home and abroad is based on the traditional process, earth kiln production, the product quality cannot be effectively controlled, the output is low, the production cycle is long, the ash content is large, and the carbonization is not good. uniform

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