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首页> 外文期刊>Separation and Purification Technology >Extraction of aromatic hydrocarbons from lube oil using n-hexane as a co-solvent
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Extraction of aromatic hydrocarbons from lube oil using n-hexane as a co-solvent

机译：使用正己烷作为助溶剂从润滑油中提取芳香烃

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摘要

Liquid-liquid extraction is the most common method for extraction of aromatics from lube oil.Aromatic content of vacuum distillate is reduced by solvent extraction,frequently with furfural.The solvent power and selectivity of furfural can be further increased by using n-hexane as co-solvent.The aromatics in lube oil were extracted at different temperatures(ranging from 323.15 to 343.15 K)and different co-solvent to feed volume ratios(ranging from 0.0 to 0.5).The extraction temperature and the amount of n-hexane in furfural were investigated systematically in order to determine their optimum values.The amounts of aromatic,paraffinic and naphthenic compounds were determined using ASTM standards by measuring refractive index(RI),viscosity,molecular weight and sulfur content.It was found that using 11 % n-hexane at 333.15 K yields the optimum extraction conditions.
机译：液-液萃取是从润滑油中萃取芳烃的最常用方法。溶剂萃取可减少减压馏出液的芳烃含量，糠醛通常可降低芳烃的含量。使用正己烷作助剂可进一步提高糠醛的溶剂功率和选择性溶剂中的芳烃在不同温度（323.15至343.15 K）和不同助溶剂与进料的体积比（0.0至0.5）下萃取。萃取温度和糠醛中正己烷的量为了确定最佳值，系统地进行了研究。使用ASTM标准，通过测量折射率（RI），粘度，分子量和硫含量确定了芳香族，链烷烃和环烷烃的含量。发现使用11％的n- 333.15 K的己烷可产生最佳的萃取条件。

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