摘要
采用超临界流体精密分离（ＳＣＦＥ）的方法将辽河减压渣油切割成多个窄馏分，在４３０℃、常压条件下对各馏分进行不同时间（２～１７ｈ）的热处理，测定了反应残余物的Ｈ／Ｃ元素比并在正交偏光下对反应残余物的光学显微结构进行观察。对渣油及其超临界戊烷精密分离馏分的热反应性能及反应残余物性质与原料性质的关系进行了讨论。研究结果表明：渣油组成的变化对其在碳化过程中的中间相形成、发展有十分重要的影响，采用ＳＣＦＥ可以将渣油切割为具有不同族组成的窄馏分，窄馏分的碳化试验表明，对组成适宜的窄馏分，在反应中可以形成各向异性发达的中间相，ＳＣＦＥ是一种改善重质烃类混合物碳化性能的有效技术。
Petroleum residue is the dominant sources of carbons The carbon produced from the residue has very important effect on the optical texture of the carbonizing system The solvent fractionation technology was used to improve the component of carbonizing system In the paper, Liao He petroleum vacuum residue was fractionated into some fractions by supercritical fluid extraction (SCFE) Carbonization of the fractions and the residue were investigated at T=430℃ and reaction time=2￣17h The properties (H/C, Optical Texture) of the thermal residue were determine The relationship between the properties of carbonization residue and the composition of petroleum residue was also discussed The experimental results show that the fractions from F3 to F6 were converted into carbonaceous mesophase with flowdomain optical texture The SCFE could be used to fractionate the petroleum residue into fractions which are suitable to produce high quality carbons
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1999年第1期45-49,共5页
Journal of Fuel Chemistry and Technology
基金
中国石油天然气集团公司资助项目
