Fractionation of Aromatic Heavy Oil by Dynamic Supercritical Fluid Extraction

Autor:	Cheol-Joong Kim, So-Jin Park, Bo-Sung Rhee
Rok vydání:	2000
Předmět:	Boiling point Chromatography Chemistry General Chemical Engineering Phase (matter) Extraction (chemistry) Supercritical fluid extraction General Chemistry Fractionation Raw material Industrial and Manufacturing Engineering Supercritical fluid Separation process
Zdroj:	Industrial & Engineering Chemistry Research. 39:4897-4900
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie000325o
Popis:	A new separation process should be applied to improve the quality of pitch that will be used for the production of high-performance carbon materials. In this study, aromatic heavy oil has been fractionated with supercritical n-hexane. Dynamic supercritical fluid extraction was applied, and the dependence on the temperature and pressure of the extraction behavior and selectivity has been investigated. Aromatic heavy oil was fractionated into several fractions, which have a boiling point distribution that is clearly different from that of the feedstock, by extraction under vapor−liquid-like phase behavior conditions. The boiling point distribution of the extracts sampled under liquid−liquid-like phase behavior conditions, however, was almost the same as that of the aromatic heavy oil. As the extraction temperature increased, the extraction rate also increased without a compensation for the extraction selectivity of the boiling point distribution. The increasing of extraction pressure, however, decreased the...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f995c7658bb9c7aa9909ffbcbfb046a6 https://doi.org/10.1021/ie000325o Zobrazit plný text záznamu