Clay concentration and heating rate effect on crude oil combustion by thermogravimetry

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• 作者：Mustafa Versan Kok ^{Kok@metu.edu.tr}
• 关键词：Heavy crude oil ; Clay ; Thermal analysis ; Kinetics
• 刊名：Fuel Processing Technology
• 出版年：2012
• 期刊代码：36_03783820
• 类别：ce
• 出版时间：April, 2012
• 卷：96
• 期：Complete
• 页码：134-139
• 文件大小：815 K

摘要

In this research, the effect of heating rate and different clay concentrations on heavy oil combustion was investigated by thermogravimetry (TG-DTG). In TG-DTG experiments, two main distinct reaction regions were identified in all of the crude oil + limestone mixtures; known as low temperature oxidation (LTO) and high temperature oxidation (HTO) respectively. It was observed that addition of clay to porous matrix (limestone + heavy oil) significantly affected the thermal characteristics and kinetics of crude oil. It was also observed that heating rate affected the reaction region intervals, peak and burn-out temperatures. Kinetic analysis of the samples was determined and it was observed that activation energies generated for the high temperature oxidation region for crude oil and crude oil/clay mixtures are in the range of 48.5-151 kJmol^鈭?#xA0;1 at three different heating rates