Liquid-liquid equilibrium for mixtures of hexadecane plus xylenes plus pyrene plus solvent at 373.15 K

被引：1

作者：

Pereira Lopes, Flavio Marcio ^{[1
]}

Albuquerque, Allan de Almeida ^{[2
]}

Stragevitch, Luiz ^{[2
]}

机构：

[1] Petrobras SA, Abreu & Lima Refinery, Rod PE 60,Km 10, BR-54521010 Ipojuca, PE, Brazil

[2] Univ Fed Pernambuco, Dept Chem Engn, Fuel Lab, Ave Prof Artur de Sa S-N, BR-50740521 Recife, PE, Brazil

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2019年 / 129卷

关键词：

Liquid-liquid equilibrium; Polycyclic aromatic hydrocarbon; Pyrene; Sulfolane; Solvent combination; POLYCYCLIC AROMATIC-HYDROCARBONS; N-METHYLPYRROLIDONE MONOETHYLENEGLYCOL; MODIFIED UNIFAC MODEL; PHASE-EQUILIBRIUM; INTERACTION PARAMETERS; ETHYLENE-GLYCOL; MIXED-SOLVENTS; ALKANE PLUS; ATM; TOLUENE;

D O I：

10.1016/j.jct.2018.09.025

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Liquid-liquid equilibrium tie line data were determined at 373.15 K for a model hydrocarbon mixture consisting of hexadecane + xylenes + pyrene with the solvents sulfolane and diethylene glycol (DEG), and also with the solvent combination N-methylpyrrolidone/ethylene glycol (NMP/EG). The measured data were used to estimate binary interaction parameters of the UNIQUAC model. All solvents presented comparable selectivities for pyrene relative to xylenes. Pyrene partition ratios greater than unity were observed for sulfolane only. As a result, from a selectivity/capacity viewpoint, when compared to NMP/EG and DEG, sulfolane is potentially the best suited solvent for extraction of pyrene. Selectivities greater than unity were observed for all solvents studied. Therefore, pyrene, a polycyclic aromatic hydrocarbon, can be selectively removed from oil containing monocyclic aromatic hydrocarbons such as xylenes. (C) 2018 Elsevier Ltd.

引用

页码：166 / 173

页数：8

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