Combustion performance and kinetics of oil shales

In this research, combustion performance and kinetics of two Turkish oil shales were investigated using differential scanning calorimetry (DSC), thermogravimetry (TGA/DTG), and thermogravimetry-mass spectrophotometry (TG-MS) techniques at three different heating rates (10, 30, and 50 degrees C/min). The combustion reaction occurred in two different regions and the corresponding mass loss of oil shales was calculated. Activation energies of oil shale samples are calculated using three different methods and the results are discussed from the viewpoint of the origin and grade of the samples.


Combustion kinetics of crude oils
Kök, Mustafa Verşan (Informa UK Limited, 2002-01-01)
In this research, the reaction rates related to an in-situ combustion process were investigated and the effect of heating rate and crude oil type on the reaction rates were investigated. A laboratory model was used to run reaction kinetic experiments in unconsolidated limestone packs using three different crude oils. Experiments were performed under the same pressure and airflow rate and at two different heating rates. It was observed that oxidation of crude oil porous media follows a series of reactions. T...
Characterization of lignocellulose biomass and model compounds by thermogravimetry
Kök, Mustafa Verşan (Informa UK Limited, 2017-01-01)
In this research, combustion characteristics of lignocellulose biomass (hazelnut shell) and three main components (cellulose, hemicellulose, and lignin) were investigated using thermogravimetry (TGA-DTG) technique at different heating rates. The ignition, peak, burn-out temperatures, and the heat liberation of lignocellulose biomass and three main components were also measured. Two different model-free kinetic methods, known as Ozawa-Flynn-Wall (OFW) and Kissinger-Akahira-Sunose (KAS), were used in order to...
Combustion Behavior and Kinetics of Turkish Lignite Blended with Biomass/Magnesite Dust
Farrokhi, Farshid Yousefzad; Kazanç Özerinç, Feyza (American Society of Civil Engineers (ASCE), 2018-12-01)
The effect of blending on the combustion behavior of a Turkish lignite blended with biomass or magnesite dust using a thermogravimetric analyzer (TGA) coupled with a Fourier transform infrared spectrometer (FTIR) under air atmosphere has been investigated. The lignite used in this study is Tuncbilek lignite (TL), which is blended with two biomasses, olive residue (OR) and almond shell (AS), and the inorganic industrial waste, magnesite dust (MD). The blends are composed of various weight fractions of fuels,...
Combustion characteristics of asphaltites
Kök, Mustafa Verşan; Ceylan, Ezgi; Ozkiliç, Oke (Informa UK Limited, 2005-04-01)
In this research, a laboratory work is performed to observe the combustion characteristics and reaction kinetic's of Silopi region asphaltites. A total of twelve experiments were performed with two different mesh sizes and under three different pressures. Product gas analyses were used to determine atomic H/C ratio, relative reaction rate, activation energy and Arrhenius constant for each asphaltite sample studied. The relative reaction rate vs. inverse temperature plots of Silopi asphaltite showed two main...
Combustion kinetics of oil shales by reaction cell experiments
Kök, Mustafa Verşan; Bagci, S. (Estonian Academy Publishers, 2008-01-01)
In this study, kinetics parameters of combustion reaction of Seyitomer and Beypazari oil shales were determined using Weijdema's model of reaction kinetics. The analysis of reaction kinetics experiments showed two different reaction regions at combustion of Beypazari oil shale sample. Only one reaction region was observed at combustion of Seyitomer oil shale. CO2/CO ratios increased gradually at low and medium temperatures and stabilized at high temperatures, especially after complete combustion. A decrease...
Citation Formats
M. V. Kök, “Combustion performance and kinetics of oil shales,” ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, pp. 1039–1047, 2016, Accessed: 00, 2020. [Online]. Available: