Coal processing method and dust suppression device used in its semi-coke dust suppression treatment step

Abstract

The invention discloses a coal processing method and a dust suppression apparatus used in the dust suppression treatment method thereof. The coal processing method comprises the steps of drying, pyrolysis, chilling and passivation flame retardation, and also comprises semi-coke dust suppression treatment after the passivation flame retardation step. Coal becomes semi-coke after the drying, pyrolysis, chilling and passivation flame retardation steps in the coal processing process through above technical scheme, and the semi-coke undergoes dust suppression treatment through the semi-coke dust suppression treatment step, so dusts and fine particles generated in the semi-coke processing process can adhere to large semi-coke, thereby the dust content of a product obtained in the invention is reduced, the loss of the semi-coke product is reduced, the dust suppression effect is achieved, environmental pollution is avoided, and continuous and rapid treatment is realized to match with the large scale production speed.

Description

technical field [0001] The invention relates to the field of industrial processing, in particular to a coal processing method and a dust suppression device used in the semi-coke dust suppression treatment step. Background technique [0002] In the existing coal processing process, the raw coal becomes semi-coke after the steps of drying, pyrolysis, quenching, passivation and flame retardant. Due to the loss of moisture and volatile components in the coal block, the volume of semi-coke will be smaller than that of the original coal block, the density will decrease, and the structure will be loose. Moreover, in the subsequent cooling and passivation process, the semi-coke product has to undergo physical impacts such as rolling, impact, and extrusion in the reactor, resulting in a large number of coal pieces being broken, making the final semi-coke product with an excessive powder content. high. Moreover, the fine particles and dust in the semi-coke product will not only caus...

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Problems solved by technology

Moreover, in the subsequent cooling and passivation process, the semi-coke product has to undergo physical impacts such as rolling, impact, and extrusion in the reactor, resulting in a large number of coal pieces being broken, making the final semi-coke product with an excessive powder content. high

Moreover, the fine particles and dust in semi-coke products will not only cause the loss of semi-coke products, but also cause environmental pollution if the fine particles and dust leak into the external environment

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