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Separation of solvent and deasphalted oil for solvent deasphalting process

Authors
Lee, Jung MooShin, SangcheolAhn, SeonjuChun, Jeong HwanLee, Ki BongMun, SungyongJeon, Sang GooNa, Jeong GeolNho, Nam Sun
Issue Date
3월-2014
Publisher
ELSEVIER
Keywords
Solvent deasphalting; Deasphalted oil; Hexane; Pentane; Separation
Citation
FUEL PROCESSING TECHNOLOGY, v.119, pp.204 - 210
Indexed
SCIE
SCOPUS
Journal Title
FUEL PROCESSING TECHNOLOGY
Volume
119
Start Page
204
End Page
210
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/99166
DOI
10.1016/j.fuproc.2013.11.014
ISSN
0378-3820
Abstract
Due to the depletion of conventional oil resources and increasing prices, various technologies for utilizing unconventional oil and low-value crude residues, which have not been fully exploited, are currently being explored. The exploitation of unconventional oil and low-value crude residues requires upgrading processes such as carbon rejection and hydrogen addition. Among many existing upgrading processes, solvent deasphalting (SDA), a technology for removing asphaltene-rich pitch and producing higher-value deasphalted oil (DAO) by using paraffinic solvents, is promising because it offers the advantages of low installation cost and flexibility in terms of the control of the quality of pitch and DAD. The SDA process requires a considerable amount of expensive solvent. Thus, solvent recovery, an energy-intensive process, is required for improved efficiency. In this paper, DAO/solvent separation experiments were carried out using two solvents, pentane and hexane, to investigate the effect of operating conditions such as temperature, pressure, and DAO/solvent ratio on the process. The DAO/pentane separation was superior to the DAO/hexane separation under similar conditions. Regardless of the solvent type, solvent recovery was increased as the DAD/solvent ratio in the feed was decreased. Solvent recovery was strongly influenced by variations in temperature but was relatively insensitive to changes in pressure. (C) 2013 Elsevier B.V. All rights reserved.
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공과대학 (화공생명공학과)
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