The effects of metallic catalysts on light crude oil oxidation in limestone medium

Celebioglu, D
Bağcı, Ali Suat
In this study, 28 experiments were performed to study the effects of metallic additives on light crude oil oxidation in limestone medium. Karakus and Beykan crude oils from Turkish oil fields were used. The metallic additives were ferric chloride (FeCl3) copper chloride (CuCl) and magnesium chloride (MgCl(2)(.)6H(2)O). The mixture of aqueous solutions of three metallic salts with limestone and the crude oils was subjected to a controlled heating schedule under a constant flow rate of air. The produced gas was analysed for its oxygen and carbon oxides contents. The results of reaction kinetics showed that the molar CO2/CO ratio values of fuel combustion increased when additives were added. A decrease in the atomic H/C ratio with an increase in temperature was observed for all runs. The reaction order, m in Arrhenius equation increases as concentration of copper and magnesium chloride additive increases but decreases as ferric chloride additive increases in both crude oils. It is observed that the metallic additives except ferric chloride decreased the Arrhenius constant, Ar, for both crude oils. As concentration of ferric chloride increases the activation energy of Karakus crude oil increases while activation energy of Beykan crude oil decreases. The copper chloride additive shows same trend for both crude oils. The 1.0 mol% concentration decreases the activation energies. The 2.0 mol% magnesium chloride increases the activation energy of Karaku crude oil while decreases the activation energy of Beykan crude oil more than 1.0 mol% does. For Karaku crude oil, the oxygen consumption curves of 2.0 mol% of metallic additives show one peak. There is similar behavior between runs with 1.0 mol% of ferric chloride and magnesium chloride and runs with no additive, but the oxidation reaction peaks with metallic salts at both concentrations occurs at lower temperatures. For Beykan crude oil, all the additives lower the peak temperature when they are compared to standard run. The trends of the curves are actually the same. Copper chloride shows one peak with the 1.0 and 2.0 mol% runs for both crude oils.


The Thermal Characterization of Crude Oils in a Limestone Matrix of Different Particle Size
Kök, Mustafa Verşan (2014-05-03)
In the first part of this research, the effect of particle size (35-100 mesh) on the calcination kinetics of a limestone sample was investigated by thermogravimetric analysis technique. Thermal studies showed that two main weight loss regions are observed in limestone samples of different particle size. In the second part of the research, thermal analysis of a medium crude oil sample in a limestone matrix of different particle size is analyzed. Two different reaction regions were observed known as low tempe...
Effect of different clay concentrations on crude oil combustion kinetics by thermogravimetry
Kök, Mustafa Verşan (2010-03-01)
The objective of this research was to investigate the effect of different clay composition and concentrations on the thermal behaviour and kinetics of heavy crude oil in limestone matrix by thermogravimetry (TG/DTG). In TG/DTG experiments, three distinct reaction regions were identified in all of the crude oil + limestone mixture known as low temperature oxidation (LTO), fuel deposition (FD) and high temperature oxidation (HTO) respectively. Addition of clay to porous matrix significantly affected the react...
Effect of pressure on combustion kinetics of heavy oils
Bağcı, Ali Suat (Informa UK Limited, 2005-07-01)
In this study, 16 experiments were conducted to study the effects of pressure on crude oil oxidation in limestone medium. Karakus (29 degrees API), Beykan (32 degrees API), Bati Raman (12 degrees API), Camurlu ( 12 degrees API), Adiyaman (26 degrees API), Garzan (28 degrees API) and Raman (18 degrees API) crude oil from Turkish oil fields were used. The mixture of limestone and the crude oil was subjected to a controlled heating schedule under a constant flow rate of air. The produced gas was analyzed for i...
Effect of clay on crude oil combustion by thermal analysis techniques
Kök, Mustafa Verşan (Springer Science and Business Media LLC, 2006-05-01)
This research was aimed to investigate the role of clay on the combustion and kinetic behavior of crude oils in limestone matrix. For this purpose, simultaneous TG (thermogravimetry) and DTA (differential thermal analysis) experiments were performed at three different heating rates as 10-15 and 20 degrees C min(-1), respectively. A uniform trend of decreasing activation energies was observed with the addition of clay. It was concluded that clays surface area affects the values of Arrhenius constant, while i...
The effect of water on combustion behavior of crude oils
Kök, Mustafa Verşan; Nurgaliev, Danis K. (Elsevier BV, 2020-03-01)
The ramped temperature oxidation experiments were performed on heavy and light crude oil samples using the TGA and DSC instruments. The crude oils were mixed with different weight percentages (10%, 20%, and 30%) of water, as a result of which six different water-oil mixtures were prepared. The samples were heated up to 800 degrees C with three heating rates 20, 25, 30 degrees C/min. Two reaction regions, particularly the low temperature oxidation (LTO) and high temperature oxidation (HTO), were identified i...
Citation Formats
D. Celebioglu and A. S. Bağcı, “The effects of metallic catalysts on light crude oil oxidation in limestone medium,” FUEL PROCESSING TECHNOLOGY, pp. 29–49, 2002, Accessed: 00, 2020. [Online]. Available: