Sustainable Mining and Metallurgy

The emission of pollutants in coking industry is large, and the national requirements for flue gas emission are becoming more and more strict. This paper analyzed the characteristics of coke oven gas, compared the main desulfurization and denitrification technologies in China and their advantages and disadvantages, and analyzed the characteristics and application of five kinds of desulfurization and denitrification combined processes commonly used in coking industry. When selecting the flue gas purification process route, coking enterprises should fully consider the factors such as the temperature of coke oven flue gas, the concentration of pollutants, coke oven process, resource situation and by-product treatment requirements, and select reliable, advanced and mature desulfurization and denitrification technology. Under the premise of meeting the export indicators, the flue gas temperature gradient should be maximized to reduce energy consumption.