Additive for alleviating coking feature of Xinjiang Zhundong high alkali coal and preparation and application method of additive

Abstract

The invention relates to the technical field of an additive for alleviating the coking feature of high alkali coal, and relates to an additive for alleviating the coking feature of Xinjiang Zhundong high alkali coal as well as a preparation and application method. The additive is prepared by adopting the following method: uniformly mixing a needed amount of aluminum hydroxide, quartz powder, carbide slag, barium hydroxide and copper oxide, and thus obtaining the additive for alleviating the coking feature of the Xinjiang Zhundong high alkali coal. The additive for alleviating the coking feature of the Xinjiang Zhundong high alkali coal is added into Zhundong high alkali coal to be combusted, in the case of blowing the ash one time every six hours, the combustion feature of the coal with the additive is proved to be consistent with that of the coal which is uneasy to coke when in combustion, a boiler is basically free from coking, an ash fusion point of a combustion substance can be effectively increased, and the coking feature of the Xinjiang Zhundong high alkali coal can be reduced. The preparation process provided by the invention is simple, the investment cost is low, the application operation is simple, and the requirement for the equipment for preparing the additive is low.

Description

technical field [0001] The invention relates to the technical field of additives for coking characteristics of high-alkali coal, and relates to an additive for alleviating the coking characteristics of high-alkali coal in Zhundong, Xinjiang, and a preparation and use method. Background technique [0002] The predicted reserves of coalfield resources in the Zhundong region of Xinjiang reach 390 billion tons. With the construction of the Xinjiang power transmission project, the Zhundong region has become one of the important bases for Xinjiang power transmission. Reasonable utilization of coal resources in Zhundong area is of great significance to the national energy strategy. [0003] The content of Na, K, Ca and other alkali metals in the raw coal of Zhundong Coal is much higher than that in the existing known power coal; the sulfur and ash content in the coal are low, and the moisture content is very high, which is higher than that of common bituminous coal in China. Moist...

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Problems solved by technology

[0006] The present invention provides an additive for alleviating the coking characteristics of Xinjiang Zhundong high-alkaline coal and its preparation and use method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the existing problem of alleviating the coking characteristics of Xinjiang Zhundong high-alkali coal Uninterrupted soot blowing only played a role in alleviating the coking of coal in Zhundong, Xinjiang, but the boiler still has a serious problem of coking during long-term operation.

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