中国石油大学学报（自然科学版）2017，Vol.41Issue(1)：156-163,8.DOI:10.3969/j.issn.1673-5005.2017.01.021
催化油浆对沥青抗老化性能的影响及机制研究
Research of effect and mechanism of FCC slurry on the aging resistance of asphalt
摘要
Abstract
AH-70 asphalts were obtained using FCC slurry with heavy crude oil from South America as the feedstock through true boiling point distillation instrument.The thin film oven test (TFOT) and pressure aging vessel (PAV) were applied to simulate the short-term and long-term aging of asphalt respectively,through which the effect and mechanism of FCC slurry on the two anti-aging processes were investigated.It is found that AH-70 asphalts can be produced from the blending of heavy oil and FCC slurry (0％,3％,6％,9％,and 12％ by weight of heavy oil,respectively) at the final boiling point of 425,430,430,430,and 435 ℃ accordingly.With the increase of the blending ratio for FCC slurry,the retained penetration and ductility at 15 ℃ of the TFOT aged asphalts are reduced.Meanwhile,the growth rate of softening point is increased.After PAV aging,the retained penetration is declined and the growth rate of softening point is also improved.And there is no significant oxidation reaction of functional groups during the TFOT aging process.As the increase of FCC slurry,the volatilization of light components and the condensation of aromatics/resins are the main reasons of deteriorating the TFOT aging performance of asphalt.After PAV aging,the sulfoxide and carboxyl groups are formed in the asphalt.Also,it is found that the aromatics in FCC slurry can inhibit the free radical reaction in the aging process of asphalt.However,the condensation of aromatics and resins still damages the PAV anti-aging property.关键词
催化油浆/沥青/实沸点蒸馏/抗老化性能/红外谱图Key words
FCC slurry/asphalt/true boiling point distillation/anti-aging property/infrared spectroscopy分类
交通工程引用本文复制引用
范维玉,翟哲,姚艳,南国枝,梁明,罗辉..催化油浆对沥青抗老化性能的影响及机制研究[J].中国石油大学学报（自然科学版）,2017,41(1):156-163,8.基金项目
中国石油天然气集团公司重点项目(15370502000070) （15370502000070）
