煤液化残渣的理化性质及低温热解行为研究  

PHYSIC-CHEMICAL PROPERTIES AND LOW TEMPERATURE PYROLYSIS BEHAVIORS OF COAL DIRECT LIQUEFACTION RESIDUE

作　　者：黄雍[1] 黄胜[1] 吴诗勇[1] 吴幼青[1] 高晋生[1] 

机构地区：[1]华东理工大学资源与环境工程学院,煤气化及能源化工教育部重点实验室,上海硕士生200237

出　　处：《煤炭转化》2015年第4期43-47,共5页Coal Conversion

基　　金：国家自然科学基金资助项目(21476079和21476080);中央高校基本科研业务费专项资金资助项目(WB1414014)

摘　　要：对锡林浩特煤通过压滤得到的液化残渣（DLR）的理化性质进行了研究,并考察了上述液化残渣在热解温度为300℃~425℃范围内液相产物的析出规律.结果表明,DLR中正己烷可溶物（HS）含量高达40.45%,沥青质含量为24.14%,与减压蒸馏得到的液化残渣相比,DLR含有较多的正己烷可溶物和较少的沥青质;DLR中正己烷可溶物主要由1~4环烷基取代芳烃和酚类、蒽醌、酯和咔唑等杂原子化合物组成,脂肪烃含量极少;当热解温度达到400℃和425℃时,低温热解产物中的正己烷可溶物的收率较DLR中正己烷可溶物的含量分别提高了7.61%和10.10%;在本实验的热解条件下,DLR中的大部分沥青质转化为小分子的正己烷可溶物;低温热解是实现液化残渣高附加值利用可行且经济的方法之一.The physic-chemical properties of coal direct liquefaction residues（DLR）was studied,and the production behaviors of liquid phase products during the pyrolysis of DLR at300 ℃-425 ℃ was also investigated.The results showed that the n-hexane soluble（HS）content of DLR was up to 40.45% and the asphaltene content was 24.14%.Compared with the DLR through reduced pressure distillation,the DLR contained more HS and fewer asphaltene.The HS of DLR was mainly composed of 1-4ring arenes and kinds of heteroatomic compounds like phenol,anthraquinone,ester and carbazole,and the content of aliphatic hydrocarbon was rather low.When the pyrolysis temperatures were 400 ℃ and 425 ℃,the yield of HS was 7.61% and10.10% higher than that of HS in DLR,which meant that most of the asphaltene transformed into HS with small molecules under the conditions of this paper.It indicates that low temperature pyrolysis is a feasible and economic method to realize the high value-added utilization of DLR.

关 键 词：液化残渣 正己烷可溶物 液相产物 低温热解 

分 类 号：TQ529[化学工程—煤化学工程] X784[环境科学与工程—环境工程]