Composition of Initiated Cracking Products of High-sulfur Natural Bitumen

Abstract

The analysis of the cracking products of bitumen Karmalskoye deposits (the content of fractions boiling up to 200 °C 6,7% wt.) has been performed. The influence of power plant coal ash microspheres on orientation of cracking bitumen components is stated. Bitumen cracking leads to significant yields of gas and coke for more than 20% wt. and destructions of all components. The initiated bitumen cracking in the presence of 10% microspheres at cracking temperature 450 °C leads to reduction of gas and coke yields and increase in fractions of ibp (initial boiling point) –360 °C at 10% wt. in comparison with products of the thermal bitumen cracking. The analysis of composition and amount of sulfur compounds in initial bitumen and the cracking products in the various conditions has shown that the thermal cracking leads to increased homologues benzothiophene contents due to partial destruction of resins, and to decrease in the content of homologues dibenzothiophene

The Oil-Bearing Strata of Permian Deposits of the Ashal’cha Oil Field Depending on the Content, Composition, and Thermal Effects of Organic Matter Oxidation in the Rocks

“…Scanning Calorimetry. In almost all physical and chemical processes of extraction and processing of hydrocarbons, changes in the amount of heat occur [41][42][43]. The magnitude of these changes is determined by the properties of the substance and environmental conditions.…”

“…The second area of manifestation of thermal effects is observed in the temperature range 200-350°C, which corresponds to the low-temperature oxidation zone 200-350°C (LTO), in which complex processes are observed, including both the formation of free radical particles for further activation of oxidation reactions and the very oxidation process aromatic fractions, as well as the formation of coke. In work 10 Geofluids [41], it was shown that during thermal transformation of oil components, both intramolecular and intermolecular condensations occur with the formation of resin fraction molecules; the aggregation of which leads to an increase in the yield of asphaltenes. In this case, asphaltenes with short aliphatic chains enter into internal cyclization reactions with the formation of burst structures, which are coke precursors.…”

Natural Asphalts in Pavements: Review

“…From the natural materials listed above, asphaltites are the most used material in pavements. These are usually heavy (4-18 • API) [19,20], blackish, hard, exhibit high softening points [21], and are recognized as asphalt hardening materials due to their high asphaltene content [14,22,23]. The melting point of asphaltites is in the range of 200 to 315 • C [24].…”

Thermogravimetric Study of Cracking Products of Natural Bitumens

“…From table data, the iron oxide forms determine catalytic properties of microspheres. It was experimentally established [10] that an optimum quantity of catalysts for an increase in the degree of destruction of the resin-asphaltene components of heavy hydrocarbon raw materials is 10 wt. %.…”