The pyrolysis, extraction and kinetics of Buton oil sand bitumen

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• 作者：Yue Ma ; Shuyuan Li ; ^{syli@cup.edu.cn}
• 关键词：Oil sand ; Bitumen ; Pyrolysis ; Extraction ; Kinetics
• 刊名：Fuel Processing Technology
• 出版年：2012
• 期刊代码：36_03783820
• 类别：ce
• 出版时间：August, 2012
• 卷：100
• 期：Complete
• 页码：11-15
• 文件大小：384 K

摘要

In this paper, the pyrolysis and extraction experiments on Buton oil sand bitumen were carried out. The contents of oil, water, gas, and semi-coke were determined and the pyrolysates were evaluated. The averaged oil content of Buton oil sand is about 20%. As measured by Dean-Stark toluene extraction, oil sand bitumen from Buton has the averaged bitumen content of about 30%. Three kinds of solvents were used to evaluate the bitumen recovery. The optimum conditions of solvent extraction were determined. The pyrolysates and bitumen were analyzed. The pyrolysis kinetics of oil sand were performed using the differential scanning calorimetry (DSC) at different heating rates of 15, 20, 25 and 30 掳C/min. The kinetic parameters (apparent activation energy E and frequency factor A) of oil sand pyrolysis were determined using Coats-Redfern method. The value of apparent activation energy E was about 20 kJ路mol^鈭?#xA0;1, corresponding to the conversion of 5-35%. The apparent activation energy was nearly 40 kJ路mol^鈭?#xA0;1 while the conversion ranges from 40%to 95%.