Research on Synchronous Desulfurization and Denitrification Coke Oven Flue Gas purification Technology Under Low Temperature Conditions
In response to the low temperature of coking furnaces and the low efficiency of mature desulfurization and denitrification catalysts in low-temperature environments,a study proposes the combined use of composite sodium thiosulfate and ammonium sulfate reaction aids based on the steel slag method.The thiosulfate ions and ammonium ions in composite additives can effectively promote the oxidation reaction and NO2 decomposition in desulfurization and denitrification of coke oven flue gas.Experiments have shown that the optimal concentration of composite additives is 0.2 mol/L,while the optimal temperature and pH value for the purification reaction of steel slag slurry are 40℃and 7.5,respectively.Under the optimal parameters,the steel slag method combined with composite additives can stabilize the removal rate of sulfur dioxide in flue gas purification to 100%,while increasing the removal rate of nitrogen oxides to 96.2%.Therefore,the proposed steel slag method combined with composite additives has good desulfurization and denitrification performance in the purification of coke oven flue gas.
coke ovendesulfurization and denitrificationsmoke purificationsteel slag methodcomposite additives
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维普
