Changes in structural-group characteristics of resins and asphaltenes of heavy oils in the primary distillation process

Kopytov, M. A.; Головко, А. К.

doi:10.1134/s0965544116090139

Cited by 21 publications

(4 citation statements)

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“…Для анализ мазута использовали стандартные методики [11]. Технический анализ ГС проводился по методике [12].…”

Section: экспериментальная частьunclassified

“…В качестве измельчающих тел ис-Таблица 1. Физико-химические характеристики нефти и полученного из нее мазута [11] Газообразные продукты анализировали на хроматографе Кристалл -5000 [17].…”

Section: экспериментальная частьunclassified

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Combined Cracking Residue and Mechanical Activation Oil Shale

Можайская

Mozhayskaya

Surkov

et al. 2019

Journal of Siberian Federal University. Chemistry

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The joint cracking of mechanically activated oil shale and petroleum residue was studied. The introduction of oil shale allowed to intensify the process of destruction of high-molecular components of the petroleum residue. In the obtained liquid thermolysis products, oils predominate from 40,2 to 81,1% wt. With an increase in the share of oil shale in the cracking products, the proportion of asphaltenes decreases from 4,2 to 2,8% wt, and of tar from 6,7 to 4,8% wt. In gaseous products, the proportion of carbon dioxide and carbon monoxide increases markedly. The introduction of mechanically activated oil shale also affects the fractional composition of thermolysis products; the proportion of gasoline (IPB – 200 °С) and diesel fractions (200–360 °С) changes

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Section: экспериментальная частьunclassified

Combined Cracking Residue and Mechanical Activation Oil Shale

Можайская

Mozhayskaya

Surkov

et al. 2019

Journal of Siberian Federal University. Chemistry

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“…The supramolecular organization of asphaltenes was investigated via high-resolution scanning and transmission electron microscopy (TEM) and X-ray diffraction phase analysis. The use of these methods provides information on the spatial organization of asphaltene macromolecules − and on the geometric dimensions and quantitative content of quasicrystalline stacks in their structure. ,,− An important analytical tool for studying the molecular level of the structural organization of asphaltenes is a method of proton magnetic resonance spectrometry ( 1 H NMR), which makes it possible to determine the main parameters of the distribution of hydrogen atoms in various structural fragments of their molecules. ,,− The results of 1 H NMR spectral integration in combination with other initial data (measured values of average molecular masses (MMs), elemental composition data) form the basis of methods for structural-group analysis (SGA) of heavy oil components. − The SGA method makes it possible to estimate the overall sizes and degree of aromaticity of resin and asphaltene molecules and to determine the number of aromatic and naphthenic rings in their naphthenoaromatic system and the average number of carbon atoms in the side alkyl substituents. ,− The resins were analyzed by SGA, while for the analysis of the low polar components, the method of gas chromatography–mass spectrometry (GC–MS) was used as the most informative method for determining the molar composition of oil systems. − …”

Section: Introductionmentioning

confidence: 99%

Structural Organization of Asphaltenes and Resins and Composition of Low Polar Components of Heavy Oils

et al. 2023

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Comparative characteristics of resins, asphaltenes, and low polar components of heavy oils from the Ashalchinskoye (I) and Nurlatskoye (II) oil fields (Republic of Tatarstan, Russia) are given. These oils differ in the age of host rocks (Permian and Devonian, respectively) and the content of their components and heteroatoms. An X-ray phase analysis and scanning and transmission electron microscopy reveal that, in contrast to smooth surface asphaltenes of oil I, asphaltenes of oil II are characterized by a loose and porous surface and smaller sizes of nanoaggregates. Nanoaggregates form a disorderly tangled structure because of the alkyl side-chain configuration, which makes it difficult to stack aromatic sheets. The crystallites of nanoaggregates of asphaltenes of oil II are smaller than the crystallites of nanoaggregates of asphaltenes of oil I. The application of the method of structural-group analysis based on the use of the measured indicators of the elemental composition, average molecular weights, and the results of 1H NMR spectroscopy made it possible to establish that overall sizes of mean molecules of resins and asphaltenes of heavy oil I are larger due to the increased content of aromatic and naphthenic cycles in the naphthenoaromatic system. A feature of the structure of the resin–asphaltene components of oil II is a greater number of alkyl substituents in the side chains. According to gas chromatography–mass spectrometry (GC–MS) analysis, the low polar components under study are characterized by a similar set of saturated hydrocarbons (n-alkanes, mono-, and polycycloalkanes) but differ in the composition of identified aromatic hydrocarbons and heteroorganic compounds. A feature of the low polar components of oil II is the presence of a wider range of n-alkyl- and phenylalkyl-substituted benzenes and nitrogen- and oxygen-organic compounds in their composition.

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“…In work [4], ecological and physico-chemical aspects of the processes of thermal processing of acid tar into road bitumen are considered. In [5], the transformations of resins and asphaltenes of different chemical composition of heavy oils during primary processing are studied using the example of the Usinsk (Komi Republic, Russia) and Zuunbayansky (Mongolia) fields. Using the data of elemental composition, molecular weight, and PMR spectroscopy, the structural and group parameters of the resin and asphaltene molecules of the initial oils and oil residues (fuel oil) obtained by atmospheric distillation with the selection of NC-350°fractions were determined.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric Аnalysis of Different Bitumens

Abdikarimov

Turgumbayeva

Samatov

et al. 2021

KEM

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Thermogravimetric analyses of the samples were performed on a Q-1000/D derivatograph of the F. Paulik, J. Paulik and L. Erdey system of the MOM company (). The method is based on registering changes in the thermochemical and physical parameters of a substance that can be caused when it is heated by the device. The thermochemical state of the sample is described by the curves: T (temperature), DTA (differential thermoanalytic), TG (thermogravimetric) and DTG (differential thermogravimetric). The last curve is derived from the TG function.

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Changes in structural-group characteristics of resins and asphaltenes of heavy oils in the primary distillation process

Cited by 21 publications

References 4 publications

Combined Cracking Residue and Mechanical Activation Oil Shale

Combined Cracking Residue and Mechanical Activation Oil Shale

Structural Organization of Asphaltenes and Resins and Composition of Low Polar Components of Heavy Oils

Thermogravimetric Аnalysis of Different Bitumens

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