Circular Economy In Coal Desulfurization Desulfurization Technology Research

Air pollution in China is mainly caused by coal combustion which produces flue gas that contains sulfur oxide, the most influential material to the environment in the process of coal's utilization. The sulfur in coal is discharged into the air in the burning process, which is the main cause for acid rain. How to improve the efficiency of coal utilization and how to decrease the SO₂ discharged into the air have always been subjects for research programs. Coal enterprises are the fountainhead in coal's production and utilization, so it is of great significance to research the desulfurization and sulfur-fixing in coal enterprises. According to the ecological laws, the issues of desulfurization and sulfur-fixing in the process of coal production, consumption and waste disposal in coal enterprises is analyzed applying the conception of circular economy in this paper.The resource conditions in developing circular economy in coal enterprises is analyzed and researched systemically through investigation in this paper. The comprehensive utilization technology of gangue in the production of coal is also studied systemically. Generating power or making bricks with gangue can consume the largest amount of gangue. The technology of desulfurization and sulfur-fixing in using gangue to generate power has been fully developed. Desulfurization in using gangue to make bricks, however, calls for further research. The gangue as brick-making material is researched systemically in this paper, both the technique of desulfurization and sulfur-fixing and comprehensive utilization ways of desulfurization by-products in using gangue to make bricks are put forward, which are all demonstrated in production practice.In term of the circular economy theory, the possibility of industrial waste as absorbent, desulfurization efficiency and economic feasibility are analyzed in the paper. Ways of comprehensive utilization of desulfurization productions to decrease solid rubbish is also explored. Based on the above research, the technical program of desulfurization and sulfur-fixing of Xinwen Mineral Corporation's Economy and Industry Zone is designd in terms of circular economy concept, with the purpose of decreasing the sulfur's outcome and increasing the efficiency of untilizing coal...