Abstract：In order to study the technical method of removing carbonyl sulfur (COS) from blast furnace gas of steel plants, so as to reduce the concentration of SO2 emitted after combustion and improve the quality of ambient air. By using the reaction system that composed of glass absorption tubes, taking NaOH as the catalyst, and taking carbonyl sulfide gas and blast furnace gas as the medium, hydrolysis reaction on the carbonyl sulfide was investigated under different alkalinity and temperature. The COS removal efficiency in different situations was obtained. It is proved that NaOH can effectively catalyze the hydrolysis reaction of carbonyl sulfur. In a certain range, the higher the concentration of NaOH is, the faster the hydrolysis rate of carbonyl sulfur is, and the hydrolysis reaction rate is positively related to the reaction temperature. Hydrolysis reaction can effectively remove carbonyl sulfur from blast furnace gas of iron and steel plants under the catalytic reaction conditions of NaOH. In addition, the COS characteristics in blast furnace gas and the feasibility of standard discharge were analyzed, which provided useful references for the remediation of COS in iron and steel industry.
苗沛然，杨晓东，王永敏. 直接碱催化水解法脱除羰基硫的技术经济分析[J]. 中国冶金, 2019, 29(1): 77-82.
MIAO Pei- ran,YANG Xiao- dong,WANG Yong- min. Technical and economic discussion on carbonyl sulfide gas removal by direct catalytic hydrolysis[J]. China Metallurgy, 2019, 29(1): 77-82.
2019, Vol. 29 
