Impact Of The Acoustic Machining Process On Rheological And Physical-Mechanical Properties Of Composite Bituminous Materials

Intensification of chemical-technological processes of petroleum chemistry and oil refining is aimed at improvement of quality of the output products, reduction of material consumption and energy saving as well as increase in economic efficiency by means of process parameters management

Scientific and Applied Aspects of Regulating of High-Viscosity Oil

Pipeline transportation of oil is considered to be one of the basic and cost-effective ways of their delivery to the place of consumption. Moreover, in the case of using electricity, the higher the viscosity of the transported oil is, the more power consumption is. For pipeline transport, it is characterized the movement of the oil in an isothermal mode, in which it changes its rheological properties, moving from a Newtonian fluid at high temperatures of the transported flow to a non- Newtonian one. In Russia, it has not been created a sufficiently rigorous theory of motion of highly viscous flows so far

Study of Heavy Resins Hydrocarbon Composition for the Pyrolisis of Impulse Nuclea-Magnetic Spectroscopy

One of the areas for an efficient use of large-tonnage and yet scarce binder as bitumen is a broad introduction of bitumen emulsions in water for road and civil construction. The technology of emulsified bitumen preparation, compared with traditional "hot" technologies and the introduction of petroleum solvents has a number of significant advantages

Comprehensive Analysis of Electrochemical and Structural-Dynamic Properties of Bitumnious Insulating Materials

At the current stage the strategic trend of development of the oil and gas industry is increase in the oil conversation depth with the use of relatively new approaches and methods of mining, treatment, transporting and processing of different kinds of hydrocarbons. Along with that, implementation of new processing techniques, improvement of the production performance and quality of the output products, intensification and reconstruction of the existing oil and gas plants depend not only on the structural materials used but also on the right choice of anti-corrosive materials for protection thereof

Analysis Of Encapsulated Polymer System Technology Application Methods And Other Diverter Technologies In Order To Increase Oil Recovery

The use of flow diverter technologies (FDT) is presented by the injection of limited amounts of special reagents into the injection wells designed to reduce the high permeability of an interlayer

Estimation of Potential Capability of Natural Bitumens and High Viscosity Oils for Refining According to Fuel-Bitumen Scheme

According to different estimates, geological heavy oil and natural bitumens resources at the Tatarstan deposits make 1,5- 7 billion tons. On the territory of Tatarstan across all bituminous horizons about 450 deposits of natural bitumens have been found. One third of deposits of this raw materials existing in Russia fall on the share of Tatarstan. Natural bitumens are valuable material for production of fine chemicals that are used in different spheres of life activities

Polyfunctional Modifiers for Bitumen and Bituminous Materials with High Performance

Over the last decade increase in capacity and the intensity of vehicular traffic has increased manifoldly, including heavy trucks, super singles, and higher tire pressures, resulting in significant increase of dynamic loads on the road surface which in turn lead to high quality requirements for bitumen in order to avoid premature wear and failure of asphalt concrete pavements. One of the possibilities to increase the quality of bitumen is to use special additives and modifiers that can provide a high adhesion to mineral filler and inhibit the aging and degradation processes in the asphalt coating. To achieve this, in the present study composite modifiers based on bisimidazolines derivatives were synthesized. The developed polyfunctional modifier (PFM) of complex action provides enhanced thermal stability, significantly improves the adhesion between bitumen binder and aggregates, and also improves the physical-mechanical properties of the asphalt concrete. Based on the test results it is recommended to use the synthesized samples of the PFM additive with complex action in asphalt mixtures for road paving

Practical Aspects of Development of Universal Emulsifiers for Aqueous Bituminous Emulsions

Abstract: A highly promising approach to the improvement of the properties of bituminous compositions for road building (BCRB) is introduction of surfactants that increase the strength of the adhesive bond between bitumen and the rock material surface and provide required rheological properties of BCRB as a result of emulsification of the bitumen binder in the aqueous medium. The performance characteristics, including the breaking rate of a bituminous emulsion (BE) are controlled by introducing modifying additives both into the dispersed phase and into the dispersion medium. The additives used for dispersion medium are usually stabilizers, organic and inorganic acids, or polymers and this issue has been comprehensively studied. The effect of petroleum fraction-based products on the BE properties is less studied. Only few studies dealing with BE modification with petroleum-based products were performed in Russia. Russian industry produces a limited range of surfactants and many of them, while having high emulsifying capacity, do not promote adhesion. Furthermore, they are rather expensive due to complex and multistage processes for their production. Key words: Bitumen Amines Emulsification Physico-chemical properties Roadbed durabilit

Structural and Dynamic Studies of Naphtha Crude Residue with Different Chemical Nature

Abstract: It is known that the tars of heavy oils of naphthene-aromatic base with high concentrations of resin-asphaltene substances (RAS) and insufficient content of high-molecular paraffins are the most suitable raw material for production of a wide range of bituminous products in general and bituminous insulating material (BIM). Naphtha crude residues (NCR) of paraffin and high-paraffin crude oils are usually used due to limited oil production. It is notable that the production of refractory special bitumens at high-temperature oxidation of residual materials results in production of non-hydrocarbon compounds- carbenes and carboides that are insoluble in hot benzene, as well as the compounds of paraffin-naphthenic base containing in extracted oil. Considering the NCR as a thermodynamic system of phases A, B and C, it should be noted that the structure of carbon links of phases can be assumed by evaluation of molecular mobility and structural-dynamic parameters. Structural-dynamic states of NCR at different temperatures were studied using relaxometer NMR 08BK/RS and used as raw material for oxidation. Key words: Naphtha crude residues % Paraffin-asphalt associates % Physical-chemical modification % oxidative polymerization % Structurally complex links % Nuclear magnetic resonance relaxation (NMR-relaxation) % IR- spectroscop

Development of the Technology of Black Oil Macromolecular Structuring in the Process of its Oxidation for Obtaining the Bituminous Insulating Materials

Abstract: One of the effective ways to improve the properties of special bitumens are their chemical and physical modification. When considering a chemical approach, we assumed that a process of oxidative polymerization is connected with radical-chain reactions. That is why when carrying out an oxidizing process of residual oil stock, it is necessary to use the modifiers, which are able to take part in this process, subjecting the segments of paraffin chains to chemical structuring with further formation of polycyclic naphthene-aromatic fragments, promoting the intense resin formation and preventing from the formation of the asphaltene crystalline phase. The analysis of physical-mechanical properties of bituminous insulating materials (BIM), based on acidified flux oil, showed the ambiguity of their assessment, i.e. at identical speeds of fuel-oil residues oxidation processes, there are differences in strength properties of coverings (C). The properties of air-blown asphaltic bitumen are regulated by resizing of the core and solvation shell of the complex structural unit (CSU) by injection of multicomponent bifunctional modifier (MBM), promoting the reduction of oxidation duration and the improvement of physical-mechanical and insulation properties of BIM. Key words: Residual oil stock Paraffin-asphaltene associates Physical-chemical modification Oxidative polymerization Complex structural units NMR-relaxometry Infrared spectroscop