A combustion-supporting coal-fired additive and its application method

Abstract

The invention discloses a combustion-supporting coal additive and an application method thereof. The coal additive comprises the following components in percentage by weight: 3-7.5% of KMnO4, 3-8% of Cu(NO3)2, 2-7.5% of Fe(NO3)3, 1.5-6% of Zn(NO3)2, 6-14% of KNO3, 5-10% of NaNO3, 0.5-1.5% of NaVO3 and the balance of H2O. The combustion-supporting coal additive disclosed by the invention uses water as a solvent, and the components are in an ionic state, so the combustion-supporting coal additive has high reaction activity; the combination of the components in the additive can promote the decarburization and cracking reactions of the coal as well as the sufficient combustion of volatile compounds and fixed carbon, enhance the combustion efficiency of the coal, and save the coal by 4-10%.

Description

technical field [0001] The invention relates to the technical field of coal combustion, in particular to a combustion-supporting coal combustion additive and a usage method thereof. Background technique [0002] Coal-burning additive is a chemical agent added to coal. It is composed of one or more substances, generally solid powder or liquid. Among them, the role of combustion-supporting additives is mainly to promote the complete combustion of coal and increase the burnout rate of coal. . [0003] In the prior art, the components in the combustion-supporting coal-fired additives generally contain chlorine and carbon elements, which are easy to generate HCl and CO under high temperature. 2 and other gases, HCl gas will cause corrosion to combustion equipment, and the CO produced 2 The gas will increase the CO of the whole combustion system 2 emissions, resulting in additional environmental pollution. [0004] At present, in industrial production, the amount of combustion...

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Problems solved by technology

[0003] In the prior art, the components in the combustion-supporting coal-fired additives generally contain chlorine and carbon elements, which are easy to generate HCl and CO under high temperature. 2 and other gases, HCl gas will cause corrosion to combustion equipment, and the CO produced 2 The gas will increase the CO of the whole combustion system 2 emissions, causing additional environmental pollution

[0004] At present, in industrial production, the amount of combustion-supporting additives added is about one-thousandth of the total amount of coal burned, which is relatively large and costly, and the combustion-supporting effect of coal-burning additives is not significant