High-pressure DSC applications on crude oil combustion

Kök, Mustafa Verşan
Pokol, György
A pressurized differential scanning calorimeter (PDSC) has been used to obtain information on the combustion characteristics of crude oils and their mixtures in two chemically different matrix materials, sand and limestone. Crude oil and sand-limestone mixtures were prepared to give a composition of 10 wt % crude oil in matrix. The PDSC curve clearly demonstrates two distinct transitional stages, namely combustion of liquid hydrocarbons and combustion of coke. The kinetic part of this research is concerned with only one peak, namely the coke combustion. Kinetic data were analyzed by two different kinetic models and the results are discussed.
Energy and Fuels


Characterization and kinetics of light crude oil combustion in the presence of metallic salts
Kök, Mustafa Verşan (American Chemical Society (ACS), 2004-05-01)
In this research, a reaction cell, thermogravimetry (TG), and differential thermal analysis (DTA) were used to characterize the light crude oil combustion and kinetics in the presence of copper(I) chloride (CuCl) and magnesium chloride (MgCl2·6H2O). In TG-DTA experiments with magnesium chloride, three reaction regions were identified, known as distillation, low-temperature oxidation (LTO), and high-temperature oxidation (HTO). In the case of copper(I) chloride, two main transitional stages are observed with...
Determination of degree of mixing in solid rocket propellants
Yeşilırmak, Yener; Yılmazer, Ülkü; Department of Chemical Engineering (2006)
Composite propellants are mainly composed of: crystalline oxidizer, metallic fuel, and polymeric binder. Additives, such as plasticizers, catalysts, bonding agents and curing agents may also be incorporated to propellant compositions in small amounts. These ingredients should be mixed rigorously in order to obtain a uniform microstructure throughout the cast propellant profile. The quality of the propellant mixture has to be determined quantitatively to improve the product quality and to reduce costs. In th...
Chemical vapor deposition of boron carbide
Karaman, Mustafa; Özbelge, Önder; Department of Chemical Engineering (2007)
Boron carbide was produced on tungsten substrate in a dual impinging-jet CVD reactor from a gas mixture of BCl3, CH4, and H2. The experimental setup was designed to minimise the effect of mass transfer on reaction kinetics, which, together with the on-line analysis of the reactor effluent by FTIR, allowed a detailed kinetic investigation possible. The phase and morphology studies of the products were made by XPS, XRD,micro hardness and SEM methods. XPS analysis showed the existence of chemical states attrib...
Dissolution of colemanite and crystallization of gypsum during boric acid production in a batch reactor
Erdoğdu, Anıl; Eroğlu, İnci; Department of Chemical Engineering (2004)
One of the most commonly used boron compounds, boric acid, is produced by dissolving colemanite (2CaO₉3B2O3₉5H2O) in aqueous sulfuric acid whereby gypsum (CaSO4₉2H2O) is formed as a byproduct and must be separated from the main product. This process consists of two steps, dissolution of colemanite and formation of gypsum. The amount of boric acid formed depends on the first step, dissolution of colemanite. In the latter step, gypsum crystals are formed and stay in the reaction mixture to grow up to a size l...
Thermal Analysis of Crude oil lignite mixtures by Differential Scanning Calorimetry
Kök, Mustafa Verşan (Elsevier BV, 1994-04-01)
Thermal characterization of lignite, crude oils and their 10 and 20% mixtures were investigated by differential scanning calorimetry (d.s.c.). The calorific value of the lignite increased in mixtures depending on the crude oil type. In pyrolysis runs, temperature ranges where distillation and visbreaking occur were identified for the crude oils studied. The effect of heating rate was also studied, and higher reaction temperatures and higher heat flow rates were observed at d.s.c. peak thermograms with incre...
Citation Formats
M. V. Kök and G. Pokol, “High-pressure DSC applications on crude oil combustion,” Energy and Fuels, pp. 1137–1141, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33142.