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http://dx.doi.org/10.9713/kcer.2012.50.3.391

Study on the Pyrolysis Kinetics of Deasphalted Oil Using Thermogravimetric Analysis  

Shin, Sang Cheol (Department of Chemical and Biological Engineering, Korea University)
Lee, Jung Moo (Department of Chemical and Biological Engineering, Korea University)
Lee, Ki Bong (Department of Chemical and Biological Engineering, Korea University)
Jeon, Sang Goo (Climate Change Technology Research Division, Korea Institute of Energy Research)
Na, Jeong Geol (Climate Change Technology Research Division, Korea Institute of Energy Research)
Nho, Nam Sun (Climate Change Technology Research Division, Korea Institute of Energy Research)
Publication Information
Korean Chemical Engineering Research / v.50, no.3, 2012 , pp. 391-397 More about this Journal
Abstract
The depletion of conventional oil reserves and the increasing energy need in developing countries such as China and India result in exceeding oil demand over supply. As a solution of the problem, the efficient utilization of heavy oil has been receiving more and more interest. In order to utilize heavy oil, upgrading processes are required. Among the upgrading processes, thermal decomposition is thought to be relatively simple and economical. In this study, to understand basic characteristics of thermal decomposition of heavy oil, we conducted pyrolysis experiments of deasphalted oil (DAO) produced by a solvent deasphalting process. DAO is a mixture of many components and consists mainly of materials of carbon number 20~40. For the comparison with results of DAO pyrolysis, additional pyrolysis experiments with single materials of carbon number 30 ($C_{30}H_{62}$, $C_{30}H_{58}O_4S$, $C_{30}H_{63}O_3P$) were conducted. Pyrolysis experiments were carried out non-isothermally with variation of heating rate (10, 50, $100^{\circ}C$/min) in a thermogravimetric analyzer. Average pyrolysis activation energy determined by using Arrhenius method, Ingraham and Marrier method, and Coats and Redfern method was 72~99 kJ/mol. In the activation energy calculated by Ozawa-Flynn-Wall method, DAO had wider variation than other single materials.
Keywords
TGA(Thermogravimetric Analyzer); Pyrolysis; Deasphalted Oil; Activation Energy; Frequency Factor;
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