Coal composite sulfur fixing agent

Abstract

The invention relates to a coal composite sulfur fixing agent, belonging to the technical field of boiler combustion desulphurization. The composite sulfur fixing agent is made of the following raw materials in parts by weight: 40-70 parts of CaO, 5-10 parts of SiO2, 5-15 parts of Al2O3, 3-5 parts of Fe2O3, 0.5-1 parts of BaS, 0.5-1 parts of BaCO3, 0.1-1.5 parts of Zn, 0.02-0.05 parts of Cu, 0.05-0.1 parts of As, 0.01-0.05 parts of Pb, 1-5 parts of CaF2, 0.05-0.2 parts of MgO, 0.5-1.0 parts of TiO2, 0.5-1.0 parts of K2O, 0.1-1.0 parts of Na2O and 0.04-0.06 parts of Ag. The coal composite sulfur fixing agent of the invention can reduce the emission of SO2, the atmospheric pollution and the formation conditions for acid rain. Since pulverized fuel ash and coal cinder are converted to modified ash and can be used in cement production technology, the clinker production of common cement can be reduced generally, the mine resources and the energy consumed during cement production are reduced, and the emission of CO2 is reduced.

Description

technical field [0001] The invention belongs to the technical field of boiler combustion desulfurization, and in particular relates to a coal-fired composite sulfur-fixing agent. Background technique [0002] my country is a developing country that uses coal as its main energy source. The amount of coal directly used for combustion is more than 2 billion tons every year. Air, water and ecological environment quality have a significant impact. In our country, acid rain has been caused in some areas, seriously endangering the ecological environment. Moreover, the annual discharge of fly ash has exceeded 200 million tons, of which only less than 30% has been comprehensively utilized. The large discharge of fly ash has seriously polluted the environment. At the same time, in the economic development of other industries, there is also a large amount of waste discharged, and the utilization rate is relatively low. In order to control the discharge of pollutants, our country has ...

AI Technical Summary

Problems solved by technology

Moreover, the annual discharge of fly ash has exceeded 200 million tons, of which only less than 30% have been comprehensively utilized. The large discharge of fly ash has seriously polluted the environment.

[0004] The effects of coal-burning pollution control at home and abroad are not ideal. A single treatment technology is likely to cause secondary pollution, high operating costs, difficult to recover investment, and even more difficult to create new benefits