神华煤直接液化残渣萃取组分改性石油沥青  

Modified asphalt with the extract fractions of Shenhua direct coal liquefaction residue

作　　者：宋真真[1] 孙鸣[1] 黄晔 吕波[1] 苏小平[1] 钟姣姣[1] 赵香龙 马晓迅[1] SONG Zhenzhen;SUN Ming;HUANG Ye;Lü Bo;SU Xiaoping;ZHONG Jiaojiao;ZHAO Xianglong;MA Xiaoxun(School of Chemical Engineering,Northwest University,International Scientific and Technological Cooperation Base for Clean Utilization of Hydrocarbon Resources,Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy,Shaanxi Research Center of;Shaanxi Yulin Energy Group Ltd.,Yulin 710069,Shaanxi,China;National Institute of Clean-and-low-carbon Energy,Beijing 102211,China)

机构地区：[1]西北大学化工学院,碳氢资源清洁利用国家国际科技合作基地,陕北能源先进化工利用技术教育部工程研究中心,陕西省洁净煤转化工程技术中心,陕北能源化工产业发展协同创新中心,陕西西安710069 [2]陕西榆林能源集团有限公司,陕西榆林710069 [3]北京低碳清洁能源研究所,北京102211

出　　处：《化工进展》2017年第9期3273-3279,共7页Chemical Industry and Engineering Progress

基　　金：国家高技术研究发展计划(2011AA05A2021);国家自然科学基金(21536009,21406178,51174281);西北大学“优秀青年学术骨干支持计划”;陕西省科技计划(重点产业创新链-工业领域,2017ZDCXL-GY-10-03);陕西省青年科技新星支持计划(2017KJXX-62)项目

摘　　要：以神华煤直接液化残渣索氏溶剂梯级萃取分别得到的重油(HS)、沥青烯(AS)和前沥青烯(PA)作为改性剂,对石油沥青进行改性,探究改性剂的掺混量对石油沥青性能的影响及其改性机制。研究表明:当HS作为改性剂时,最佳掺混量为1%;当AS作为改性剂时,最佳掺混量为4%;PA作为改性剂时得到的改性沥青,针入度和延度不能同时符合美国ASTM D5710—95标准40~55针入度的指标要求;HS和AS改性沥青与石油沥青相比在2924cm^(–1)及2847cm^(–1)处的—CH2—的伸缩振动吸收峰强度变弱,在改性过程中可能发生了烷基侧链脱氢反应;改性沥青与石油沥青的热失重相比,其最终失重温度都有所提高,当AS作为改性剂、加入量为4%时改性沥青最终失重温度提高最大为11℃;随着改性剂分子量的增大,其荧光显微镜图片中的荧光物质会越来越多,颗粒逐渐增大。The petroleum asphalt was modified by three fractions extracted from Shenhua direct coal liquefaction residue[hexane soluble(HS),asphaltene(AS)and preasphaltene(PA)].The optimum of modifiers and mechanism were studied.The optimal conditions were as follows:the optimum amount of HS has been found to be1%and AS to asphalt ratio of4%,however the penetration and ductility of PA-modified asphalt can't meet the specifications of ASTM D5710-9540-55penetration grade designated for modified asphalts at the same time.The modified asphalts were investigated by FTIR.The involvement of modifiers(HS,AS)decreased the stretching vibration of aliphatics(-CH2-)of modified asphalt at2924cm-1and2847cm-1.The results showed that the involvement may cause dehydrogenation reaction of the alkyl side chain.TG and DTG curves of modified asphalt and petroleumasphalt were basically the same,but the ultimate weight loss temperature was increased.For example,the maxium increasing temperature of4%AS/90reached11℃.The much larger size of the fluorescent substance with larger molecular of modifiers can be seen from the fluorescence microscopy images.

关 键 词：改性剂 石油沥青 傅里叶变换红外光谱 热重分析 荧光显微镜 

分 类 号：TQ536.4[化学工程—煤化学工程]