BP抑制剂对焦炭性能及孔隙结构分形描述的影响  

Influences on Properties and Fractal Description of Pore Structure of Coke Treated by BP Inhibitor

作　　者：张泽志[1] 赵建宏[2] ZHANG Zezhi;ZHAO Jianhong(School of Chemistry and Environment,He’nan Institute of Education,450046 Zhengzhou,China;School of Chemical and Energy Engineering, Zhengzhou University,450001 Zhengzhou,China)

机构地区：[1]河南教育学院化学与环境学院,郑州博士副教授450046 [2]郑州大学化工与能源学院,郑州博士教授450001

出　　处：《煤炭转化》2018年第3期59-64,共6页Coal Conversion

基　　金：河南省重大公益性科研项目(081100911800)

摘　　要：考查了BP抑制剂对焦炭热态性能、表面形貌及孔隙结构分形描述的影响.结果表明:BP抑制剂能使焦炭试样热态性能明显改善,焦炭开孔数目减少,气孔多呈封闭状,孔容积及比表面积均减小,这种结构有利于抑制焦炭劣化反应.应用动态吸附技术测得了焦炭试样在不同相对压力下的吸附气体量,用Frenkel-Halsey-Hill方程拟合.结果表明:在研究尺度范围内,焦炭孔隙结构存在分形现象,且负载BP抑制剂的焦炭分形维数明显变小,证明BP抑制剂能够渗透或覆盖焦炭孔隙结构,使孔隙粗糙程度降低而趋于光滑,进而有效抑制焦炭劣化反应.The influence on properties,surface morphology and fractal description of pore structure of coke samples treated by BP inhibitor were investigated.The results show that after treated by BP inhibitor,the thermal performances of coke samples are improved,the pores of coke samples are decreased,as well as the pore volume and specific surface area,which are beneficial to inhibit coke deterioration reaction.The adsorption-desorption data of coke samples were measured and fitted using Frenkel-Halsey-Hill equation,it is found that there are fractal phenomena in pore structure of coke samples in the study scale and the fractal dimensions of coke samples treated by BP inhibitor are lower than that of the original coke sample.The results explain that BP inhibitor can effectively inhibit coke deterioration reaction by infiltrating into or covering the pore structure of coke and reducing pore roughness.

关 键 词：焦炭 BP抑制剂 劣化反应 表面形貌 吸附-脱附曲线 分形描述 

分 类 号：TF526.1[冶金工程—钢铁冶金] TQ520.1[化学工程—煤化学工程]