烟煤空气气化半焦的孔隙特性  

Porous characters of air gasification semi-coke for bituminous coal

作　　者：王俊琪[1] 张小明[1] 

机构地区：[1]南京工业职业技术学院能源与电气分院,江苏南京210023

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第8期1081-1084,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：引进人才基金资助项目(201050609YK401)

摘　　要：利用氮气吸附的方法,测量了枣庄烟煤及其在常压流化床空气气氛下的气化半焦的比表面积、总孔体积、孔径等参数,研究结果表明:在空气气化过程中孔隙结构变得发达,比表面积、总孔体积明显增大,孔径明显减小,且随着温度的升高,半焦的比表面积,孔隙率也明显增大,平均孔径明显减小.并与氮气热解半焦进行对比,气化半焦的比表面积和总孔体积都明显的增大.By utilizing the nitrogen adsorption instrument,this study measured the characters of specific area,total pore volume,aperture etc.of Zaozhuang bituminous coal and gasification semicoke derived from air atmosphere in circulate fluidized bed.The results show that more abundant pores,larger specific area,total pore volume and smaller aperture are formed during air gasification.Specific area,porosity of semi-coke develop richly with temperature increase,average radius of semi-coke evidently decrease with temperature increase.Comparison with the pyrolyzed semi-coke,specific area and total pore volume of gasification semi-coke increase obviously.

关 键 词：孔隙率 吸附 脱附 比表面积 部分气化 总孔体积 半焦 孔径 

分 类 号：N5[自然科学总论]