热解条件对白音华褐煤半焦孔隙结构的影响  

EFFECT OF PYROLYSIS CONDITION ON THE PORE STRUCTURE OF BAIYINHUA COAL CHAR

作　　者：张琦[1] 解京选[1] 田江漫[1] 刘彦强 

机构地区：[1]中国矿业大学(徐州)化工学院,江苏徐州硕士221116 [2]中海油新能源投资有限责任公司,北京硕士100000

出　　处：《煤炭转化》2013年第3期1-4,共4页Coal Conversion

摘　　要：以内蒙古白音华褐煤为研究对象,在管式炉中进行了低温热解实验,考察了低温干馏后原煤和固体产物半焦的结构组成变化,分析了干馏条件对固体产物半焦孔隙结构的影响规律.对原煤和不同干馏条件下半焦的吸附/脱附等温曲线的分析结果表明,半焦具有较宽的孔隙分布,而且中孔和微孔占据了很大的比例;对半焦的孔隙特性参数的测定结果表明,干馏终温和保温时间对半焦的比表面积、孔容积和平均孔径都具有较大的影响.Experimental analysis of the lignite pyrolysis characteristics of Inner Mongolia Baiyinhua lignite was carried out in tube furnace, the structure of the raw coal and solid pyrolysis products of semi-coke composition changes had been investigated. The adsorption/desorption iso- therms of raw coal and semi-coke obtained under different carbonization conditions showed that the semi-coke had a wide pore size distribution, and mesopore and micropore account for a sub- stantial proportion~ the semi-coke pore characteristics showed the final dry distillation tempera- tures and holding time of lignite pyrolysis had a significant impact on specific surface area, pore volume and average pore diameter of semi-coke.

关 键 词：半焦 孔隙特性 低温热解 褐煤 

分 类 号：TQ530.2[化学工程—煤化学工程]