褐煤与煤直接液化残渣共热解产物半焦性能研究  

Properties of semi-coke from co-pyrolysis of lignite and direct liquefaction residue of Shendong coal

作　　者：李晓红[1] 马江山[1] 薛艳利[1] 李文英[1] 

机构地区：[1]太原理工大学煤科学与技术省部共建国家重点实验室培育基地,山西太原030024

出　　处：《燃料化学学报》2015年第11期1281-1286,共6页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(U1361202);国家高技术研究发展计划(863计划;2011AA05A202)资助项目~~

摘　　要：为使煤直接液化残渣得到清洁高效再利用,采用常压固定床反应器,对神东煤直接液化残渣与呼伦贝尔褐煤共热解制取的半焦进行了研究。结合扫描电镜、N2-吸附、X射线衍射、拉曼光谱以及热重分析发现,共热解过程中存在的软化熔融现象导致液化残渣与褐煤相互黏结,共热解半焦比表面积与孔体积减小,半焦结构有序化程度增加。与褐煤单独热解半焦相比,共热解半焦CO2气化反应性能低。In order to make use of coal direct liquefaction residue efficiently,co-pyrolysis of Hulunbuir lignite and direct liquefaction residue（ DLR） of Shendong coal were conducted in a fixed bed reactor under atmospheric pressure. The physicochemical properties of co-pyrolysis semi-coke were analyzed by scanning electron microscope,nitrogen adsorption-desorption,X-ray diffraction,Raman spectroscopy and thermogravimetric analyzer. The results show that DLR semi-coke and lignite semi-coke are cohered each other,because the DLR is softened and melted during co-pyrolysis. The specific surface area and pore volume of co-pyrolysis semi-coke decrease. Characterization of both XRD and Raman spectroscopy indicate that the order degree of co-pyrolysis semi-coke increases with the addition of DLR. Compared with the lignite semi-coke,the CO2 gasification reactivity of co-pyrolysis semi-coke decreases.

关 键 词：褐煤 煤直接液化残渣 共热解 半焦 CO2气化反应性 

分 类 号：TQ523.6[化学工程—煤化学工程]