Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol

Naphthenic acids (NAs) are weak organic acids present in the heavy crude oil and Oil Sand Bitumens. Whereas, the NAs are the major cause of corrosion in different processing, handling and storage equipment's of the refinery. Esterification of these acids can be an interesting method to reduce t...

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Main Authors: Zafar, F., Mandal, P.C., Shaari, K.Z.B.K., Nadeem, S.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.20005 /
Published: American Institute of Physics Inc. 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031280505&doi=10.1063%2f1.5005481&partnerID=40&md5=79e1901468fba020dcf3883b2bfc90ba
http://eprints.utp.edu.my/20005/
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spelling utp-eprints.200052018-04-22T14:32:18Z Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol Zafar, F. Mandal, P.C. Shaari, K.Z.B.K. Nadeem, S. Naphthenic acids (NAs) are weak organic acids present in the heavy crude oil and Oil Sand Bitumens. Whereas, the NAs are the major cause of corrosion in different processing, handling and storage equipment's of the refinery. Esterification of these acids can be an interesting method to reduce the NAs content in the crude oil besides its esters are valuable commodity and can be used as added lubricant in the oils. In this study, NAs reduction kinetics were investigated in a batch type reactor with subcritical methanol, the experiments were performed at temperatures of 150-210°C and fixed methanol partial pressure of 2 MPa. Findings of this study demonstrate that the 59 of total acid number (TAN) reduction was achieved at the temperature of 210°C, methanol partial pressure of 2 MPa and reaction time of 150 min. The TAN reduction followed second order kinetics with activation energy and frequency factor of 54.15 KJ/mol and 7.6×103, respectively. These results suggest that subcritical methanol can be an effective to reduce the TAN non-catalytically. © 2017 Author(s). American Institute of Physics Inc. 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031280505&doi=10.1063%2f1.5005481&partnerID=40&md5=79e1901468fba020dcf3883b2bfc90ba Zafar, F. and Mandal, P.C. and Shaari, K.Z.B.K. and Nadeem, S. (2017) Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol. AIP Conference Proceedings, 1891 . http://eprints.utp.edu.my/20005/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Naphthenic acids (NAs) are weak organic acids present in the heavy crude oil and Oil Sand Bitumens. Whereas, the NAs are the major cause of corrosion in different processing, handling and storage equipment's of the refinery. Esterification of these acids can be an interesting method to reduce the NAs content in the crude oil besides its esters are valuable commodity and can be used as added lubricant in the oils. In this study, NAs reduction kinetics were investigated in a batch type reactor with subcritical methanol, the experiments were performed at temperatures of 150-210°C and fixed methanol partial pressure of 2 MPa. Findings of this study demonstrate that the 59 of total acid number (TAN) reduction was achieved at the temperature of 210°C, methanol partial pressure of 2 MPa and reaction time of 150 min. The TAN reduction followed second order kinetics with activation energy and frequency factor of 54.15 KJ/mol and 7.6×103, respectively. These results suggest that subcritical methanol can be an effective to reduce the TAN non-catalytically. © 2017 Author(s).
format Article
author Zafar, F.
Mandal, P.C.
Shaari, K.Z.B.K.
Nadeem, S.
spellingShingle Zafar, F.
Mandal, P.C.
Shaari, K.Z.B.K.
Nadeem, S.
Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol
author_sort Zafar, F.
title Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol
title_short Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol
title_full Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol
title_fullStr Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol
title_full_unstemmed Total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol
title_sort total acid number reduction kinetics of naphthenic acids using non-catalytic subcritical methanol
publisher American Institute of Physics Inc.
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031280505&doi=10.1063%2f1.5005481&partnerID=40&md5=79e1901468fba020dcf3883b2bfc90ba
http://eprints.utp.edu.my/20005/
_version_ 1741196300400984064
score 11.62408

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