Heating rate effect on the DSC kinetics of oil shales

Date

2007-12-01

Author

Kök, Mustafa Verşan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

261
views

0
downloads

This research was aimed to investigate the combustion and kinetics of oil shale samples (Mengen and Himmetoglu) by differential scanning calorimetry (DSC). Experiments were performed in air atmosphere up to 600 degrees C at five different heating rates. The DSC curves clearly demonstrate distinct reaction regions in the oil shale samples studied. Reaction intervals, peak and burn-out temperatures of the oil shale samples are also determined. Arrhenius kinetic method was used to analyze the DSC data and it was observed that the activation energies of the samples are varied in the range of 22.4-127.3 kJ mol(-1) depending on the oil shale type and heating rate.

Subject Keywords

Activation energy, DSC, Heating rates, Oil shale, Reaction kinetics, Thermal analysis

URI

https://hdl.handle.net/11511/36443

Journal

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY

DOI

https://doi.org/10.1007/s10973-007-8240-3

Collections

Department of Petroleum and Natural Gas Engineering, Article

Suggestions

OpenMETU
Core

Thermal behavior and kinetics of crude oils at low heating rates by differential scanning calorimeter Kök, Mustafa Verşan (2012-04-01) The objective of this research was to investigate thermal behavior and kinetics of different origin crude oils in limestone matrix by differential scanning calorimeter (DSC) at low heating rates. In DSC experiments, three distinct reaction regions were identified in all of the crude oil + limestone mixtures known as low temperature oxidation (LTO), fuel deposition (FD) and high temperature oxidation (HTO) respectively. Kinetic analysis of the crude oil samples was determined by different models known as AST...
Combustion characteristics of lignite and oil shale samples by thermal analysis techniques Kök, Mustafa Verşan; Keskin, C; Madarasz, J; Bagci, S (2004-01-01) In this research thermal analysis and kinetics of ten lignite's and two oil shale samples of different origin were performed using a TA 2960 thermal analysis system with themogravimetry (TG/DTG) and differential al analysis (DTA) modules. Experiments were performed with a sample size of similar to10 mg, heating rate of 10degreesC min(-1). Flow rate was kept constant (10 L h(-1)) in the temperature range of 20-900degreesC. Mainly three different reaction regions were observed in most of the samples studied. ...
Oil shale kinetics by differential methods Kök, Mustafa Verşan (Springer Science and Business Media LLC, 2007-06-01) In this research, pyrolysis and combustion behavior of three different oil shale samples from Turkey were characterized using thermal analysis techniques (TG/DTG). In pyrolysis experiments, two different mechanisms causing mass loss were observed as distillation and cracking. In combustion experiments, two distinct exothermic peaks were identified known low and high temperature oxidation. On the other hand, determination of activation energies are required for the estimation of oil extraction conditions fro...
Application of TGA-MS technique for oil shale characterization and kinetics Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K.; Kandasamy, Jayaraman (2022-03-01) Thermal characteristics and model free kinetics of four different oil shale samples were studied using simultaneous thermogravimetry-mass spectrometer (TGA-MS) analysis performed at three different heating rates and under air atmosphere. All the reaction regions and corresponding peak temperatures, mass loss, and the residue of oil shale samples were determined. Meanwhile, the main volatile products, primary alcohols, and aromatic compounds as products of oil shale combustion, were determined on the basis o...
Chemical evaluation and kinetics of Siberian, north regions of Russia and Republic of Tatarstan crude oils Varfolomeev, Mikhail A.; Nagrimanov, Ruslan N.; Samatov, Aizat A.; Rakipov, Ilnaz T.; Nikanshin, Alexander D.; Vakhin, Alexey V.; Nurgaliev, Danis K.; Kök, Mustafa Verşan (2016-01-01) In this research, thermal characteristics and model free kinetics of five different degrees American Petroleum Institute gravity crude oil samples from different locations were studied using combustion calorimetry and thermogravimetry (TGA) techniques. Higher heating values of crude oils were determined from the combustion calorimetry experiments. It was shown that these values increase with an increase in saturate fraction and degrees API gravity of studied samples and decrease with an increase in viscosit...

Citation Formats

M. V. Kök, “Heating rate effect on the DSC kinetics of oil shales,” JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, pp. 817–821, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36443.