高校化学工程学报2016，Vol.30Issue(2)：261-267,7.DOI:10.3969/j.issn.1003-9015.2016.02.002
脱沥青油糠醛萃取过程中液-液相平衡模拟研究
Simulation of Liquid-Liquid Equilibrium in Furfural-Deasphalted Oil Extraction Processes
摘要
Abstract
A large amount of expensive and high quality soft components are needed when using deoiled asphalt (DOA) from solvent deasphalt processes (SDA) to produce high grade road blending asphalt. Furfural-deasphalted oils (DAO) extraction processes can provide soft component thus increase DOA value. The Kuop method was adopted to describe the four components (saturates, aromatics, resins and asphaltene) in DAO, and a model based on the UNIFAC thermodynamic equation describing liquid–liquid equilibrium in furfural-deasphalted oils was developed to simulate the extraction process. The results show that the maximum error between calculated values and experimental values is less than 5%. Refined oil yields and saturates contents increase with the increase of temperature, and refined oil yields increase linearly with the increase of furfural-DAO mass ratio, while the contents remain unchanged. Under liquid-liquid equilibrium conditions, the yield and content of refined oil remain unchanged with the increase of theoretical stage. However, the yield of refined oil increases to 30.1%(wt) under non-equilibrium conditions. These results indicate that the selective dissolution of aromatics in furfural can be reduced under higher temperatures, but it is not affected by furfural-DAO mass ratios.关键词
脱沥青油/糠醛/液液相平衡/族组划分法/萃取/模拟Key words
deasphalted oils/furfural/liquid-liquid equilibrium/Kuop/extraction/simulation分类
能源科技引用本文复制引用
吴奎,任满年,杜平安,李彬,应卫勇,曹发海..脱沥青油糠醛萃取过程中液-液相平衡模拟研究[J].高校化学工程学报,2016,30(2):261-267,7.基金项目
中国石化科研项目(112062)。 （112062）
