Low-sulfur and environment-friendly coal and processing method thereof

Abstract

The invention provides low-sulfur and environment-friendly coal which mainly comprises, by weight, 40-70 parts of semi coke powder, 20-50 parts of coal slime, 20-50 parts of pulverized coal, 1-5 parts of a binder and 2-6 parts of an additive. The semi coke is a novel carbon material which is obtained through carbonization and pyrolysis of cohesionless or weak-viscosity high volatile bituminous coal at the medium and low temperature, and the fixed carbon amount of the semi coke is larger than or equal to 82%. The coal slime is sticky waste produced in the coal washing and dressing process, and the fixed carbon content of the coal slime is 30-52%. The invention further provides a processing method of the low-sulfur and environment-friendly coal. In-place optimization of the semi coke powder is achieved, resource utilization is achieved for coal slime solid waste, and pollution caused by the waste to the environment is reduced. The total sulfur of briquette coal is smaller than or equal to 0.4, smoke and SO2 emission can be effectively reduced in the combustion process of briquette coal, and pollution to the atmosphere is reduced.

Description

technical field [0001] The invention relates to the technical field of briquette processing, in particular to a low-sulfur environment-friendly briquette and a processing method thereof, which use blue charcoal powder, coal slime and coal powder as raw materials. Background technique [0002] In recent years, air pollution in my country's cities and urban agglomerations has become increasingly serious, and haze weather frequently occurs in the Beijing-Tianjin-Hebei region, the Yangtze River Delta and the Pearl River Delta. One of the important reasons is that SO 2 (invisible, pungent smell) transformed overnight into sulfates (visible, component of haze). For a long time, coal has accounted for more than 75% of China's energy mix. 80% of China's coal resource consumption is used for direct combustion, and more than 70% of the smoke and dust emitted by Chinese cities into the atmosphere and SO 2 90% of the total comes directly from coal combustion, and the direct combustio...

AI Technical Summary

Problems solved by technology

However, for the coal slime produced by coal washing plants without power plants nearby, due to the difficulty of transportation and the impact of cost, no easy breakthrough has been found for resource utilization

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