Progress and suggestion on desulfurization and denitrification technology for coke oven flue gas
WANG Yan
ZHANG Yang
GUO Shanshan
BAI Xiaoyan
ZHOU Qi
WANG Zhizheng
Abstract：SO2 and NOx emission status and the main influencing factors of pollutant concentration in coking industry in China were analyzed.This paper also compared the process principle,desulfurization and denitrification efficiency and their advantages and disadvantages of the desulfurization technology (i.e.,ammonia desulfurization,limestone-gypsum desulfurization,double alkali desulfurization,MgO desulfurization,spray drying desulfurization and circulating fluidized bed desulfurization),denitrification technology (low NOx combustion technology,SCR denitrification,oxidation denitrification) and integrated desulfurization and denitrification technology (active coke desulfurization and denitrification and LCO desulfurization and denitrification).The route selection,flue gas emission,secondary pollution and others problems were summarized.It is pointed out that the pollution control of coke oven flue gas should effectively integrate the source control,low nitrogen combustion and ending purification,and the coke oven management level and the application of new technology should also be strengthened.
Keywords：coke oven flue gasdesulfurization and denitrificationpollutant concentrationsecondary pollutionintegrated removal
Publication Date：2017-01-01