化工进展2011，Vol.30Issue(2)：411-416,6.
柴油降凝剂复配及降凝机理
Combination and mechanism of diesel fuel pour point depressant at low temperature
摘要
Abstract
Combination of pour point depressants ( PPDs ) is one of the effective means to improve low temperature properties of diesel fuel. In this paper 0# diesel fuel was used to evaluate the effect of different PPDs, then PPDs with good effects were combined. Digital X-ray diffraction (XRD),micropolariscope and differential scanning calorimeter ( DSC ) were used to study the influence of PPD on the growth of wax crystal and thermodynamics of crystallization at a low temperature. The results showed that combination of polymethacrylate PPD( KT4 )and polyethylene-viny acetate PPD had better effect especially at the ratio of 1: 1. XRD and micropolariscope indicated that adsorption was the mechanism of polymethacrylate PPD (KT4), while co-crystallization was the mechanism of polyethylene-viny acetate PPD ( AH-BSFH ). DSC showed that 1: 1 combination of polymethacrylate PPD ( KT4 ) and polyethylene-viny acetate PPD could further lower the liquid-solid phase change.关键词
柴油/降凝剂/蜡晶Key words
diesel fuel/ pour point depressant/ wax crystal分类
能源科技引用本文复制引用
曾葵,韩生,吴志桥,王鹏,谭凤芝..柴油降凝剂复配及降凝机理[J].化工进展,2011,30(2):411-416,6.基金项目
国家自然科学基金(20976105)、上海教委重点学科(J51503)、上海市科学技术委员会课题(09QT1400600)、上海市教委科研创新项目(09YZ387)及上海市教育委员会科研创新重点项目(11ZZ179). （20976105）
