催化裂化油浆超临界萃取组分热缩聚生成中间相沥青的定量研究

以某催化裂化油浆为初原料，经超临界萃取预处理后，采用管式电炉试验器进行热缩聚制备中间相沥青，采用偏光显微镜和ImageJ软件对中间相沥青产品进行定性和定量分析。结果表明，原料中的硫元素质量分数对中间相沥青产品性质的影响复杂。随着反应时间的延长和温度的提高，流域型中间相体积分数稍有减少，并且流线型向着小流域型和纤维状两个方向发展，而压力对流域型中间相的发展影响不大。预处理后的催化裂化油浆在热缩聚条件为420℃、4 h时得到的中间相沥青的性质最好。

Quantitative Analysis of Mesophase Development Upon Heating of the Supercritical Fluid Extraction of FCC Slurry

The mesophase pitch was prepared from the supercritical fluid extraction of the FCC slurry by heating in tubular reactor. Polarizing microscope and relative software were used to analyze the mesophase samples qualitatively and quantitatively. The experimental results indicated that the influence of S mass fraction in raw materials on the quality of the mesophase product was complex. As the reaction was carried for longer time or at higher temperature, the content of domains could be reduced, and particularly the domains could advance along two directions?small domains and fibrous pitch. Pressure had little influence on the morphology of mesophase pitch. The quality of mesophase pitch was the best when it prepared under the conditions of 420℃ for 4 h.