摘要
对两种不同热解工艺产生的半焦XR和ZR的脱硫性能进行分析,发现其穿透硫容均小于2.5 mg/g,不适合直接应用于烟气脱硫。利用CO_(2)活化法制备了两类活性半焦XC和ZC,并考察其脱硫性能及孔隙结构。结果表明,ZC具有最佳综合性能,优化的制备工艺条件为:活化温度950℃,活化时间2 h,CO_(2)流量150 mL/min,其综合硫容达到70.9 mg/g;XC和ZC均具有丰富的微孔结构,孔径分布主要集中在1.20 nm和1.84 nm。
The desulfurization performances of semi-cokes(XR and ZR)produced by different pyrolysis processes were analyzed.It was found that the breakthrough sulfur dioxide capacity of both XR and ZR were less than 2.5 mg/g.Therefore,the raw semi-cokes are not suitable for flue gas desulfurization directly.Two kinds of activated semi-coke XC and ZC were prepared by CO_(2)activation method,and their desulfurization performances and pore structures were investigated.The result shows that activated semi-coke ZC has the best comprehensive performance.The optimized preparation process conditions are activation temperature of 950℃,activation time of 2 h,CO_(2)flow rate of 150 mL/min.The comprehensive sulfur dioxide capacity of ZC reaches 70.9 mg/g.Both XC and ZC have rich microporous structures,and the pore size distribution is mainly concentrated at 1.20 nm and 1.84 nm.
作者
田士东
张文权
欧曜文
李克伦
杜秉霖
苏长罗
TIAN Shi-dong;ZHANG Wen-quan;OU Yao-wen;LI Ke-lun;DU Bing-lin;SU Chang-luo(Shaanxi Coal and Chemical Technology Institute Co.,Ltd.,Xi’an 710100,China;State Energy Key Laboratory of Clean Coal Grading Conversion,Xi’an 710100,China)
出处
《应用化工》
CAS
CSCD
北大核心
2022年第5期1356-1359,共4页
Applied Chemical Industry
基金
陕西省创新能力支撑计划项目(2019KJXX-014)。
关键词
半焦
脱硫
CO_(2)
活化
硫容
semi-cokes
desulfurization
carbon dioxide
activation
sulfur dioxide capacity
