浸渍法制备钾基半焦在烟气脱硫中的循环再生（英文）  

Cyclic Regeneration of Potassium-Modified Activated Semi-coke by Impregnation Method for Flue Gas Desulfurization

作　　者：吴海涛 卓启东 杨子 石建东[2] 程洪见[2] 殷文宇[2] 唐晓艳[2] 马运声[2] 袁荣鑫[2] WU Hai-Tao;ZHUO Qi-Dong;YANG Zi;SHI Jian-Dong;CHEN Hong-Jian;YIN Wen-Yu;TANG Xiao-Yan;MA Yun-Shen;YUAN Rong-Xin(College of Chemistry,Chemical Engineering and Materials Science of Soochow University,Suzhou,Jiangsu 215500,China;Key Laboratory of Advanced Functional Materials,Changshu Institute of Technology,Changshu,Jiangsu 215500,China)

机构地区：[1]苏州大学化学化工与材料科学学院,苏州215500 [2]常熟理工学院,江苏省新型功能材料重点实验室,常熟215500

出　　处：《无机化学学报》2019年第8期1427-1435,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21201068,21201025);江苏省自然科学基金(No.2016050)资助项目

摘　　要：采用碳酸钾(K2CO3)与活化半焦通过浸渍法制备用于除去烟气SO2的催化脱硫材料(K/ASC)。研究表明,将活化半焦(ASC)通过10%(质量分数)K2CO3改性获得钾基半焦(K10),其在120 ℃时具有良好的SO2脱除效率,而且随着再生温度的升高(400~700 ℃),再生后K10的脱硫活性明显提高。K10(K10-R-600-n)的循环再生测试表明,样品在4次再生循环(K10-R-600-4)后具有最佳的脱硫性能,其硫容量为68.9 mg·g^-1,比K10(55.4 mg·g^-1)高24.37%。再生分析脱硫产物为物理吸附的SO2,H2SO4和硫酸盐,再生后未分解的硫酸盐沉积会降低样品的脱硫活性。经过10次循环再生(K10-R-600-10),样品的硫容量为初始钾基半焦K10的70%。The potassium modified Activated Semi-coke (K/ASC) for SO2 removal was prepared using potassium carbonate (K2CO3) by the impregnation method.The ASC modified by 10%(w/w) K2CO3 (K10) exhibited good SO2 removal efficiency at 120 ℃.From 400 to 700 ℃,the higher the regeneration temperature is,the better is the desulfurization activity of K10 after regeneration.Cyclic regeneration of K10 (K10-R-600-n) showed that the sample had the best desulfurization performance after four regeneration cycles (K10-R-600-4),and its sulfur capacity was 68.9 mg·g^-1,24.37% higher than that of K10 (55.4 mg·g^-1).The desulfurization products are divided into physisorbed SO2,H2SO4 and sulfate.The deposition of sulfate,which does not decompose after regeneration,results in the decrease of the desulfurization activity.The sulfur capacity of the sample after ten regeneration cycles (K10-R-600-10) remained 70% that of the fresh K10.

关 键 词：半焦 SO2 脱硫 循环再生 

分 类 号：O643.3[理学—物理化学] TF704.3[理学—化学]