Simulation of pilot-plant extraction experiments to reduce the aromatic content from lubricating oils

Espada, Juan J.; Coto, Baudilío; Grieken, Rafael van; Moreno, Juan M. Martínez

doi:10.1016/j.cep.2007.06.012

Cited by 20 publications

(8 citation statements)

References 11 publications

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“…The saturation equilibrium in the system: aromatic hydrocarbons -furfural has been quite widely described in the literature. The extraction of aromatic compounds from vacuum fractions with furfural in different temperatures and at different solvent to feed stock ratios was studied in detail (Espada et al, 2008;Hoseini et al, 2009).…”

Section: Extraction Processes With the Use Of A Co-solventmentioning

confidence: 99%

The effect of using a co-solvent in the extraction process on the performance and quality of the obtained raffinates

Antosz

Ptak

2019

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During the investigations solvent refining tests were conducted using co-solvents of different concentration as well as carrying out a reference process without a co-solvent. The laboratory stand used for modelling the technological process allowed to carry out the solvent refining continuously, simulating a production process in the petroleum rafinery lube oil plant. The feed stock used in the investigation was fraction obtained during petroleum vacuum distillation serving to produce a base oil. The investigation of the solvent extraction process was conducted using formamide as a co-solvent in the amount of 10% (m/m) and 15% (m/m). In addition, the extraction process without formamide was carried out as a reference process when comparing both the yield of the obtained raffinates and quality of the products received when a co-solvent was applied. In all the solvent refining tests the same technological parameters were applied. Basic physico-chemical properties of the produced raffinates were determined. It was found that despite using the same technological parameters in the extraction processes, changing only the proportion of co-solvent from 0 to 10% (m/m), raffinates of different yield and quality were obtained. The lowest yield was observed during the process in which only furfural was applied, i.e. in the reference process for those with the use of a co-solvent, and during that process a raffinate of 49.7% (m/m) yield was obtained. The highest raffinate yield -72.2% (m/m) was obtained in the process with 10% (m/m) of formamide. In the process with 5% (m/m) of a co-solvent a raffinate of 62.5% (m/m) yield was obtained. When comparing the performances obtained, it can be stated that an addition of a co-solvent in the proportion of 5% (m/m) will cause 12.8% (m/m) increase in the amount of the raffinate obtained, and 10% (m/m) addition of a co-solvent will bring 22.5% (m/m) increase of the refining process yield. This increase in the raffinate output leaded to with the lowering of its quality in regard to all the investigated parameters. STRESZCZENIE: W trakcie badań przeprowadzono próby rafinacji rozpuszczalnikowej z zastosowaniem współrozpuszczalnika w różnych stężeniach oraz proces odniesienia bez udziału współrozpuszczalnika. Do badań modelujących proces technologiczny wykorzystano stanowisko laboratoryjne umożliwiające prowadzenie procesów rafinacji rozpuszczalnikowej w sposób ciągły, symulujące proces przemysłowy stosowany na bloku olejowym w rafinerii ropy naftowej. Surowcem do badań była frakcja otrzymana podczas destylacji próżniowej ropy naftowej służąca do wytwarzania oleju bazowego. Badania nad procesem ekstrakcji rozpuszczalnikowej prowadzono przy zastosowaniu formamidu jako współrozpuszczalnika w ilości 5% (m/m) i 10% (m/m). Wykonano również proces ekstrakcji bez współudziału formamidu, służący jako proces odniesienia dla porównania wydajności uzyskanych rafinatów i jakości otrzymanych produktów procesu z zastosowaniem współrozpuszczalnika. Dla wszystkich prób rafinacji rozpuszczalnikowej zastosow...

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Section: Extraction Processes With the Use Of A Co-solventmentioning

confidence: 99%

The effect of using a co-solvent in the extraction process on the performance and quality of the obtained raffinates

Antosz

Ptak

2019

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“…However, some of these processes, such as vacuum distillation and pyrolysis (cracking) (Fuentes et al, 2007;Ramasamy and T-Raissi, 2007), which involve temperature and pressure control, include steps with several disadvantages because they require installation of expensive equipment that can end up raising the final cost of the recovered product (Pécora, 2004;van Grieken et al, 2008). Alternative studies involving recovery via radiation revealed that this method can be developed fewer steps than the already cited ones (Zaykina and Zaykin, 2002); however, in this case high temperatures are used and the industrial scale presents the same restrictions, not yet compensated in such processes by more promising results.…”

Section: Introductionmentioning

confidence: 99%

“…04, pp. 687 -697, October -December, 2010 On the other hand, among the various alternative processes recently proposed, extraction with solvents (Coto et al, 2006;Elbashir et al, 2002;Espada et al, 2007;Martins, 1997;van Grieken et al, 2008) gained a good deal of attention because it is simple, economical and ecologically correct since their waste products (organic sludge) can be used in the asphalt industry. The foundations of this process have been used to recover polluted areas because the handling of oil solubilizing solvents, not miscible in water, allows their removal with no harm to the environment (Wei et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Liquid-liquid extraction and adsorption on solid surfaces applied to used lubricant oils recovery

Filho

Moura

Ramos

2010

Braz. J. Chem. Eng.

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-In this work, the recovery of base oils from waste lubricants following the steps of solvent extraction, adsorption on solids and solvent removal by evaporation was evaluated. In the step of solvent extraction, the most efficient was 1-butanol, followed by tert-butanol, 2-propanol and ethanol; for the step of adsorption, activated carbon was the most effective solid for PAH removal, confirming the similarity of these compounds with petroleum aromatic fractions. Thus, the optimum solvent-adsorbent pair for the recovery of used lubricant oils through the proposed methodology was 1-butanol/activated carbon. At the end of the process, it was possible to establish a set of steps that permit the recovery of lubricant base oils with lower content of contaminants.

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“…Recent studies have focused on particle removal by solvent extraction as an essential step in the global recovery process of used oils. It can be noticed, however, that in this case it is still necessary to conduct the re-refining in order to obtain the base oil (Espada et al, 2008;Hamad et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Recovery of Used Lubricant Oils Through Adsorption of Residues on Solid Surfaces

Moura¹

2010

BJPG

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Waste lubricant oils are products that undergo degradation due to their use, yielding substances that are potentially carcinogenic, such as PAHs (polycyclic aromatic hydrocarbons), which renders them improper. In this work, a sequence of physical steps was investigated focusing on the adsorption on solids for PAHs removal. Adsorption isotherms were constructed considering the PAHs concentration capacity presented by different solids, with activated carbon as the most efficient adsorbent in the removal of PAHs. At the end of the process it was possible to reestablish the main properties of the base oil, and to propose a methodology for the recovery of the base oil, comprising solvent extraction, adsorption on solid surfaces and solvent distillation, making it adequate to be reintroduced into the production chain.

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Simulation of pilot-plant extraction experiments to reduce the aromatic content from lubricating oils

Cited by 20 publications

References 11 publications

The effect of using a co-solvent in the extraction process on the performance and quality of the obtained raffinates

The effect of using a co-solvent in the extraction process on the performance and quality of the obtained raffinates

Liquid-liquid extraction and adsorption on solid surfaces applied to used lubricant oils recovery

Recovery of Used Lubricant Oils Through Adsorption of Residues on Solid Surfaces

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