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Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study

A study on the performance of a pilot scale operation of re-refining used lubricant oil via solvent-extraction process route was conducted to investigate its performance in comparison to the laboratory scale operation. Two dependent variables, namely the Percentage of Sludge Removal (PSR) and Percen...

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Main Author: Abdul Karim, Azila
Format: Thesis
Language:English
Published: 2004
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/8013/1/AzilaAbdulKarimMFKT2004.pdf
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spelling my.utm.80132018-09-22T08:22:40Z http://eprints.utm.my/id/eprint/8013/ Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study Abdul Karim, Azila TP Chemical technology A study on the performance of a pilot scale operation of re-refining used lubricant oil via solvent-extraction process route was conducted to investigate its performance in comparison to the laboratory scale operation. Two dependent variables, namely the Percentage of Sludge Removal (PSR) and Percentage of Oil Loss (POL), were determined and analyzed as the key parameters in measuring the performance of the extraction process, for laboratory as well as pilot scale operations. The performance of the solvent-extraction process in pilot scale was analyzed by varying the solvent-to-oil ratio (SOR) and the amount of potassium hydroxide (KOH) addition, and the results were compared with the data collected from the laboratory scale operation. In addition, the physical properties of spent lubricant and recovered base oil were analyzed and compared between the two scales of operation. In view of the practicality and commercial aspect of the project, the used solvent from previous extraction process was recycled for consecutive run. Thus, the composition of the recovered solvent must be identified to understand its effect on the performance of the solvent-extraction process. Results from the study showed that, in general, the PSR and POL for laboratory and pilot scales operation revealed similar trend of curves, but with expectedly lower performance from the pilot scale study. The main reason of the lower performance from pilot scale operation was due to the change of composite solvents' composition during the solvent-recovery process, which dragged the solvent/oil mixture into the two phase region of the ternary phase diagram. This results in the dispersion of sludge during extraction process. Another factor, which contributed to the difference in the performance of the laboratory and pilot scale study, was the consolidation process. The process simulation, which was carried out for the pilot scale study showed suitability to represent the pilot scale operation, where the data generated from the simulation was acceptable, with percentage error of +lo%. 2004-02 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/8013/1/AzilaAbdulKarimMFKT2004.pdf Abdul Karim, Azila (2004) Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study. Masters thesis, Universiti Teknologi Malaysia, Faculty of Chemical and Natural Resources Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:11511
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Abdul Karim, Azila
Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study
description A study on the performance of a pilot scale operation of re-refining used lubricant oil via solvent-extraction process route was conducted to investigate its performance in comparison to the laboratory scale operation. Two dependent variables, namely the Percentage of Sludge Removal (PSR) and Percentage of Oil Loss (POL), were determined and analyzed as the key parameters in measuring the performance of the extraction process, for laboratory as well as pilot scale operations. The performance of the solvent-extraction process in pilot scale was analyzed by varying the solvent-to-oil ratio (SOR) and the amount of potassium hydroxide (KOH) addition, and the results were compared with the data collected from the laboratory scale operation. In addition, the physical properties of spent lubricant and recovered base oil were analyzed and compared between the two scales of operation. In view of the practicality and commercial aspect of the project, the used solvent from previous extraction process was recycled for consecutive run. Thus, the composition of the recovered solvent must be identified to understand its effect on the performance of the solvent-extraction process. Results from the study showed that, in general, the PSR and POL for laboratory and pilot scales operation revealed similar trend of curves, but with expectedly lower performance from the pilot scale study. The main reason of the lower performance from pilot scale operation was due to the change of composite solvents' composition during the solvent-recovery process, which dragged the solvent/oil mixture into the two phase region of the ternary phase diagram. This results in the dispersion of sludge during extraction process. Another factor, which contributed to the difference in the performance of the laboratory and pilot scale study, was the consolidation process. The process simulation, which was carried out for the pilot scale study showed suitability to represent the pilot scale operation, where the data generated from the simulation was acceptable, with percentage error of +lo%.
format Thesis
author Abdul Karim, Azila
author_facet Abdul Karim, Azila
author_sort Abdul Karim, Azila
title Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study
title_short Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study
title_full Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study
title_fullStr Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study
title_full_unstemmed Re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study
title_sort re-refining of base oil from spent lubricant : a comparative study between laboratory and pilot scale study
publishDate 2004
url http://eprints.utm.my/id/eprint/8013/1/AzilaAbdulKarimMFKT2004.pdf
http://eprints.utm.my/id/eprint/8013/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:11511
_version_ 1643644902591954944
score 13.211869

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