Honeycomb briquette containing sulfur-fixing combustion-supporting additive and preparation method thereof

Abstract

The invention relates to the technical field of sulfur dioxide pollution emission control and combustion-supporting energy conservation in fire coal, in particular to honeycomb briquette containing asulfur-fixing combustion-supporting additive and a preparation method thereof. The honeycomb briquette is prepared from the following raw materials in percentage by mass: 72% of a coal slime and raw coal mixture, 15% of clay, 10.9-11.7% of carbide slag, 0.2% of Na2CO3, 1.1% of KMnO4 with the purity of 40% and 0-0.8% o of a pore forming agent, wherein the pore forming agent is an organic sodium salt; according to the invention, residual carbide slag after coal mining is used as a main alkali source, industrial-grade potassium permanganate and the Na2CO3 are added to serve as combustion improvers besides coal slime left after coal washing serves as main auxiliary binders, and on the basis that the use cost and the use amount of raw materials are reduced, the pore-forming agent is added in the honeycomb briquette preparation process to achieve the purpose of improving the sulfur fixation effect; due to the addition of the additives, in the combustion process of the honeycomb briquette, organic groups can be decomposed into non-toxic and harmless carbon dioxide and water to be discharged into air, so that the honeycomb briquette has a porous structure.

Description

technical field [0001] The invention relates to the technical fields of sulfur dioxide pollution emission control in coal combustion and combustion-supporting energy-saving, in particular to honeycomb coal containing sulfur-fixing and combustion-supporting additives and a preparation method thereof. Background technique [0002] Honeycomb coal has been used as the main heating energy source in northern rural areas for quite a long time. The sulfur oxides released during the combustion of briquettes are one of the chief culprits of winter smog in northern China. Although the Shanxi region has fully implemented the coal-to-gas initiative to control air pollution, the insufficient supply of gas in winter still requires a large amount of honeycomb coal to alleviate the energy pressure, and the issue of SO2 emissions during the combustion process still needs to be paid attention to and solved. [0003] There are already many patents on briquette sulfur fixation technology, but d...

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Problems solved by technology

[0004] The present invention provides a honeycomb containing sulfur-fixing and combustion-supporting additives in order to solve the technical problems that the existing briquette sulfur-fixing process and formula are complicated, and the use cost and usage amount of raw materials are high.

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