摘要
利用烟煤和无烟煤单种煤及配煤制备活性焦,通过密度函数理论解析N2在77K条件下对活性焦样品的吸附/解吸等温线,得出其孔容参数和BET比表面积,并通过酸碱滴定表征活性焦样品的表面化学性质;利用固定床反应装置评价在180℃、SO2浓度为456mg/Nm3模拟烟气条件下的脱硫效果。结果表明:通过配煤制备的活性焦产品其孔结构的发育兼具了2种煤的特点,而其表面化学性质比单种煤制备的活性焦更为丰富;活性焦的表面化学性质对其烟气脱硫性能起到主导作用,有着合理表面酸性位和碱性位构成的活性焦产品有着最佳的脱硫效果。
Activated coke samples were prepared by single coal and blending coal from bituminous and anthracite, the adsorption desorption isotherm of N2 for activated coke samples at 77 K was characterized by density functional theory, the pore w）lurne parameters and BET specific surface area were obtained, and through acid/base titration, the surface chemical property of activated coke samples was characterized; the desulfurization experiments from simulated flue gas of 456 mg/Nm^3 SO2 concentration by activated cokes were conducted on a fixed bed reactor at temperature 180℃. The results showed that the pore structure development of activated coke sample prepared by blending bituminous and anthracite both have these two raw material coal＇ s feature, whereas its surface chemical properties are more rich than activated coke prepared from single coal; surface chemistry of activated coke plays an important role in SO2 removal performance, and the activated coke with optimum desulfurization effect has rational acid/base sites constitution.
作者
解炜
曲思建
王鹏
李兰廷
梁大明
XIE Wei QU Si-jian WANG Peng LI Lan-ting LIANG Da-ming(School of Chemistry and Environment Engineering, China University of Mining and Technology （ Beijing ）, Beijing 100083 China Beijing Research Institute of Coal Chemistry, China Coal Research Institute Corporation Ltd. , Beijing 100013, China Beijing Key Laboratory of Coal Based Carbon Materials, Beijing 100013, China)
出处
《煤质技术》
2017年第A01期44-47,51,共5页
Coal Quality Technology
基金
国家重点研发计划重点专项(2016YFC0204104)
煤炭科学技术研究院科技发展基金资助项目(2014JC01)
关键词
配煤
活性焦
烟气脱硫
密度函数理论
孔容参数
BET比表面积
脱硫效果
coal blending
activated coke
flue gas desulfurization
density function theory
pore volume parameter
surface BET special area
desulfurization effect
