化工进展2018，Vol.37Issue(7)：2547-2556,10.DOI:10.16085/j.issn.1000-6613.2017-1734
基于柱色谱分离的阿曼减压渣油结构表征与溶解度参数测定
Structural characterization and determination of solubility parameters of Oman vacuum residue based on column chromatography separation
摘要
Abstract
Oman vacuum residues were separated into saturation,light aromatics,middle aromatics, heavy aromatics , light resins , middle resins , heavy resins , and asphaltene by liquid-solid chromatography method,and the hydrocarbon compositions and the molecular structure of each fraction were characterized. Meanwhile , solubility parameters were calculated by the group contribution method and the relation between properties and solubility parameter was correlated. The results indicated that the sulfur distribution of aromatic and resin fractions was relatively uniform, while the vast majority of N(85.05%),CCR(91.95%)and metal(99.85%)were mainly enriched in heavy aromatics,resins and asphaltene;the removal rate of metal(Ni and V) and CCR decreased markedly at the total component yield of 53.8% and 43.8%,respectively,which was important to guide solvent deasphalting process. From saturate to asphaltene,the density ( ρ i),molar volume( Vi )and solubility parameter( δi )increased. In addition,the δ VR of Oman residue was 17.29 MPa1/2,between light aromatics and middle aromatics. Compared to S,N,CCR,H/C ratio,density,fA and RT,excellent linearity between δ and lnM was shown and the correlation equation was δ=4.7282lnM–14.639.关键词
阿曼减压渣油/柱色谱分离/烃类组成/结构参数/溶解度参数Key words
Oman vacuum residue/chromatography separation/hydrocarbon composition/structure parameter/solubility parameter分类
能源科技引用本文复制引用
仝玉军,沈本贤,刘纪昌,黄恒文..基于柱色谱分离的阿曼减压渣油结构表征与溶解度参数测定[J].化工进展,2018,37(7):2547-2556,10.基金项目
国家自然科学基金项目(21476082). （21476082）
