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Received August 28, 2017
Accepted September 22, 2017
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Effect of Dodecylbenzene Sulfonic Acid on the Behavior of Asphaltene Aggregation in a Solvent Deasphalting System
Graduate School of Energy Science and Technology, Chungnam National University (CNU), 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Korea 1Climate Change Research Division, Korea Institute of Energy Research (KIER), 152 Gajeongro, Yuseong-gu, Daejeon, 34129, Korea
ksgo78@kier.re.kr
Korean Chemical Engineering Research, February 2018, 56(1), 14-23(10), 10.9713/kcer.2017.56.1.14 Epub 2 February 2018
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Abstract
The effect of dodecylbenzene sulfonic acid (DBSA) with different addition amount of DBSA (MDBSA), temperatures and solvent-to-oil ratio (SOR, v/v) on asphaltene aggregation in a solvent deasphalting system was investigated. Increasing the MDBSA at SOR 10 and 55 oC caused the asphaltene removal ratio (ARR) to increase first, then maximize at 1 wt% of MDBSA and then decrease continuously. Based on the SARA (saturate, aromatic, resin, asphaltene) composition, the adsorption amount of DBSA on the asphaltene surface and the self-aggregation of the DBSA, the reason for the change in ARR with MDBSA was found due to the adsorption mechanism. In addition, the asphaltene-resin- DBSA colloidal size confirmed the change of adsorption behavior between the asphaltene and DBSA. Based on the results of this study, a hypothetical adsorption mechanism of DBSA on asphaltene aggregation in the solvent deasphalting system was conceived of and proposed.
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References
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Li C, Wang JQ, Sui LT, Cui M, Deng WN, Acta Petrol Sin: Pet Process Section, 29(3), 459 (2013)
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Pereira JC, Lopez I, Salas R, Silva F, Fernandez C, Urbina C, Lopez JC, Energy Fuels, 21(3), 1317 (2007)
Pfeiffer J, Saal RNJ, J. Phys. Chem., 44(2), 139 (1940)
Alcazar-Vara LA, Zamudio LS, Buenrostro-Gonzalez E, J. Dispersion Sci. Technol., 37(11), 1544 (2016)
Sun ZH, Li D, Ma HX, Tian PP, Li XK, Li WH, Zhu YH, Fuel Process. Technol., 138, 413 (2015)
Seshadri KS, Young DC, Cronauer DC, Fuel, 64(1), 22 (1985)
Mullins OC, Sheu EY, Hammami A, Marshall AG, Springer, New York, 89-202(2007).
Andersen SI, Christensen SD, Energy Fuels, 14(1), 38 (2000)
Zhang J, Qiu Y, Yu DY, Chin. J. Appl. Chem., 26(12), 1480 (2009)
Somasundaran P, Zhang L, J. Pet. Sci. Eng., 52(1-4), 198 (2006)
