A study of the heavy fractions and residues from West Siberian crude oil by thermogravimetric and differential thermal analysis techniques

Пенчев, В.; Stojanova, M.

doi:10.1007/bf01914262

Cited by 9 publications

(2 citation statements)

References 5 publications

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“…7 The urge to improve energy efficiency usually implies that studies on the enthalpy in the pyrolysis process have to be carried out thoroughly. Penchev and Stojanova 8 tried to obtain enthalpy of residue distillated from west Siberian crude oil in the pyrolysis process and ended up with semi-quantitative results for the lack of precise calibration of the apparatus. Kok and Karacan 9 analyzed six crude oil samples using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) and quantitatively acquired enthalpies of reaction in the thermal process.…”

Section: Introductionmentioning

confidence: 99%

Study of the Thermal Performance and Interaction of Petroleum Residue Fractions during the Coking Process

et al. 2012

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SARA fractions (i.e., saturates, aromatics, resins, and asphaltenes) were prepared from vacuum residues of a Venezuelan crude oil and a Chinese Liaohe crude oil. Thermal performance of the fractions and their blends, plus interactions between the fractions, was then quantitatively studied by thermogravimetric analysis (TGA), derivative thermogravimetric analysis (DTG), and differential scanning calorimetry (DSC). Results indicated that the thermal processes of saturates, aromatics, and resins are endothermic to varying degrees because of thermal cracking. In contrast, both asphaltenes show exothermic behavior throughout the process. Then, it was found that there is a good linear dependency of enthalpy of fractions and blends upon the coke yield. The thermodynamic characteristic of a feedstock would change from endothermic to exothermic when its coke yield rises to some point, which is 49.1 wt % in this study. Furthermore, the difference in the coke yields and enthalpies between theoretical and experimental values revealed that synergic interactions between fractions could change the underlying chemical reaction pathway and, thus, in turn, influence the enthalpy of the thermal process. Proper selection of the blending feedstocks might therefore reduce energy consumption in coking processes in addition to inhibiting coke formation.

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Section: Introductionmentioning

confidence: 99%

Study of the Thermal Performance and Interaction of Petroleum Residue Fractions during the Coking Process

et al. 2012

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“…Recently, also other methods of thermal analysis [10][11][12][13][14][15][16][17] have been introduced. Results presented in our report are an example of application of oxyreactive thermal analysis to examine the thermal history of rocks.…”

Section: Introductionmentioning

confidence: 99%

Kerogen as a geochemical marker of the thermal history of rocks

Cebulak

Karczewska

Mazurek

et al. 1997

Journal of Thermal Analysis

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The study presents examples of the application of oxyreactive thermal analysis to the geological prospecting of bitumen deposits. Thermal analysis performed under properly chosen analytical conditions allows determination of characteristic features of organic matter and, at the same time, estimation of the thermal history of rocks. Thermal oxyreactivity curves document whether rocks were heated before or not. The results of the oxyreactive thermal analysis correlate well with the results of routine chemical analyses of organic matter (e.g. the composition of kerogen and bituminous fraction, Rock-Eval analysis and others). Our study clearly demonstrates that the composition of organic matter in facially, lithostratigraphically, and biogenetically identical rocks depends on their thermal history.

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