用于调合高等级道路沥青的富芳烃FCC油浆复合改性工艺  

Compound Modification Process of Aromatics Enriched FCC Slurry Oil Used for Producing High-Grade Paving Asphalt

作　　者：范伟杰 崔灵瑞 任满年[2] 许军 曹发海[1] FAN Weijie;CUI Lingrui;REN Mannian;XU Jun;CAO Fahai(Large Industrial Reactor Engineering Research Center of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;Luoyang Company, SINOPEC, Luoyang 471012, China)

机构地区：[1]华东理工大学大型工业反应器工程教育部工程研究中心,上海200237 [2]中国石化洛阳分公司,河南洛阳471012

出　　处：《石油学报（石油加工）》2022年第1期65-74,共10页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：中国石油化工股份有限公司项目(115058)基金资助。

摘　　要：采用2种改性剂对催化裂化(FCC)油浆进行复合改性,并调合制备沥青产品,分析了改性工艺对沥青产品性能的影响;采取红外光谱(FT-IR)、核磁共振(NMR)、飞行时间质谱(MALDI-TOD-MS)及元素分析等手段对FCC油浆结构进行了表征,使用Brown-Ladner(B-L)法对FCC油浆平均分子结构参数进行了计算,提出了复合改性的反应机理。结果表明:随着复合改性反应温度上升,沥青产品的性能先上升后下降;随着复合改性反应压力和时间的增加,沥青产品性能有小幅提升。复合改性反应的本质是改性剂与FCC油浆稠环芳烃之间发生的亲电取代反应,生成了具有长链结构的大分子芳烃,有效提升了FCC油浆的高温稳定性及重组分含量。Two modifiers were used to compound the FCC slurry,the asphalt product was prepared by blending,and the effect of the modification process on the performance of the asphalt product was analyzed.The structure of the FCC slurry was characterized by infrared spectroscopy(FT-IR),nuclear magnetic resonance(NMR),time-of-flight mass spectrometry(MALDI-TOD-MS)and elemental analysis.The average molecular structure parameters of the slurry were calculated by Brown-Ladner(B-L)method,and the reaction mechanism of the compound modification was proposed.The results show that with the increase of reaction temperature,the performance of asphalt products first increases and then decreases,and with the increase of reaction time,the performance of asphalt products increases slightly.An electrophilic substitution reaction between the modifier and the FCC thick cyclic aromatics produces macromolecular aromatics with long chain structures,which effectively improves the high temperature stability and recombination content of the slurry.

关 键 词：FCC油浆 分子结构 化学改性 道路沥青 

分 类 号：TE624[石油与天然气工程—油气加工工程]