Kinetic analysis of crude oils by a weighted mean activation energy approach |
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Authors: | M. V. Kök E. Okandan |
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Affiliation: | (1) Petroleum and Natural Gas Engineering Department, Middle East Technical University, 06531 Ankara, Turkey |
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Abstract: | A weighted mean activation energy method was applied to describe the reactivity and combustibility of crude oils via simultaneous TG/DTG. Thermal experiments were conducted with a non-isothermal method at a heating rate of 10C min–1 with excess air. Reaction rates increased progressively with increasing temperature. The rate data were fitted to an Arrhenius equation; the plots showed three distinct reaction regions. Weighted mean activation energies (Ewm), of the crude oils were calculated and a correlation was established betweenEwm, API gravity and peak temperatures during high-temperature oxidation. |
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Keywords: | activation energy combustion crude oil differential scanning calorimetry kinetics thermogravimetric analysis |
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