The effect of un-saturates on low-temperature oxidation of crude oil
نویسنده
چکیده
Low-temperature oxidation (LTO) of four Arabian crudes as well as blends of naphtha with a super-light crude was investigated employing differential thermal analysis. The mass fraction of un-saturates in the reactants varied between 0.2 and 0.9. All reactants showed LTO peaks between 230 and 264 oC; heat flow at the peak, however, varied widely. The data revealed a clear increase in LTO-generated heat as the reactant’s content of un-saturates increased. The lightest crude with 51.1 oAPI gravity and un-saturates fraction of 0.2 showed the least LTO reactivity. It is, therefore, concluded that the un-saturates content of a crude is an influential factor in its LTO tendency and, thus, its potential for spontaneous ignition and other enhanced-recovery techniques that rely on LTO.
منابع مشابه
Determination of Saturates, Aromatics, Resins and Asphaltenes (SARA) Fractions in Iran Crude oil Sample with Chromatography Methods: Study of the Geochemical Parameters
In this study, Iran crude oil samples (K, L) were separated on the basis of solubility and polarity, resulting in saturates, aromatics, resins, and asphaltenes fractions. The fractions were analyzed by traditional open column chromatography, thin layer chromatography-Flame ionization detector in an Itroscan instrument (TLC-FID) and Gas chromatography with flame ionization detection for the dete...
متن کاملApplication of Imidazolium based ionic liquid Nano-emulsions for the removal of H2S from crude oil
Hydrogen sulfide is one of the most dangerous contaminants in crude oil and natural gas that have to be removed prior to the transfer and refining. In this study, hydrophobic ionic liquid, i.e. 1-ethyl-3-methylimidazolium methylflour, [EMIM] [NTf2], was used as scavenger for the reduction of the H2S. Due to its ionic nature, [EMIM] [NTf2] forms nanoemulsion in crude oil media and hence can diss...
متن کاملAssessing the Biological Inhibitors Effect on Crude Oil Wax Appearance Temperature Reduction
To assess the effect of micro-organisms on the reduction of wax appearance temperature (WAT) of waxy crude oil, some appropriate strains were obtained from contaminated samples exposed to hydrocarbon compounds for a long time. By conducting some screening tests, four strains were chosen and aerated in a bioreactor; they were then grown in some hydrocarbon environments in order to produce biolog...
متن کاملAn Experimental Study on Evaluation of Factors Influencing the Viscosity and Viscoelastic Properties of Waxy Crude Oil
The influences of several operating factors on the viscosity of the Isfahan refinery waxy crude oil sample are studied through conducting some rheological shear rotational tests. The Taguchi design method is adopted to determine the impact of factors such as shear rate, temperature, cooling rate, wax content, and asphaltene content on the viscosity of the waxy crude oil. The results show that t...
متن کاملInfluence of storage conditions on quality and viability of high and low oleic sunflower seeds
Storage conditions of oil seeds before industrial extraction might influence the quality of the crude oil. The aim of present study was to clarify the storage able potency of high and low oleic cultivars of sunflower based on oil and fatty acid changes of seeds and their viability. The seed samples of four sunflower cultivars (two high oleic and two low oleic) were stored in three different tem...
متن کامل