Changing the Structure of Resin-Asphaltenes Molecules in Cracking

Authors

  • Ye. Imanbayev Al-Farabi Kazakh National University, 71 al-Farabi ave., Almaty; Institute of Combustion Problems, 172 Bogenbay batyra st., Almaty Kazakhstan
  • Ye. Tileuberdi Al-Farabi Kazakh National University, 71 al-Farabi ave., Almaty; Institute of Combustion Problems, 172 Bogenbay batyra st., Almaty Kazakhstan http://orcid.org/0000-0001-9733-5015
  • Ye. Ongarbayev al-Farabi Kazakh National University, 71 al-Farabi ave., Almaty, Kazakhstan http://orcid.org/0000-0002-0418-9360
  • Z. Mansurov Al-Farabi Kazakh National University, 71 al-Farabi ave., Almaty; Institute of Combustion Problems, 172 Bogenbay batyra st., Almaty Kazakhstan http://orcid.org/0000-0002-8956-216X
  • A. Batyrbayev Institute of Combustion Problems, 172 Bogenbay batyra st., Almaty Kazakhstan
  • Ye. Akkazin Al-Farabi Kazakh National University, 71 al-Farabi ave., Almaty Kazakhstan
  • E. Krivtsov Institute of Petroleum Chemistry, 4, Akademichesky ave., 634021, Tomsk Russian Federation
  • A. Golovko Institute of Petroleum Chemistry, 4, Akademichesky ave., 634021, Tomsk Russian Federation
  • S. Rudyk Sultan Qaboos University, Al Khoudh, Muscat 123 Oman http://orcid.org/0000-0002-6312-9771

DOI:

https://doi.org/10.18321/ectj645

Keywords:

natural bitumen, cracking, catalyst, asphaltene, resin, molecular structure

Abstract

In the paper, structural changing of resin-asphaltene molecules in cracking process of oil sand bitumen are investigated. Cracking process to natural bitumen carried out in an open-to-air reactor, which extracted from oil sand by organic solvent. Reaction temperature was 450 °С and process duration was 60 min. The reactor was heated at a rate of 10 °C/min up to the desired temperature. Di-tert-butyl peroxide was used as radical formation additive. When limiting oxygen, it can be used catalyst molecule supplies as the oxidizer. The thermal destruction processes of heavy hydrocarbons with the catalyst make it possible to increase the yield of low boiling liquid products with the formation of coke and gas as by-products. High temperature leads to increase the oil content, and decrease the total resinasphaltene components in bitumen. Monte Carlo method used for construction the molecular structure of resin-asphaltene components. The calculations data determined the most stable conformation of resins and asphaltenes molecules, that the stability of the molecules affect structural characteristics such as the number of structural blocks, their size and spatial arrangement of atoms with respect to each other. Microscopic images showed that the asphaltenes have around 40‒50 nm of particle size, which large monolithic switching, weakly focused on a major surface, provided with amorphous carbon.

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Published

2017-06-30

How to Cite

Imanbayev, Y., Tileuberdi, Y., Ongarbayev, Y., Mansurov, Z., Batyrbayev, A., Akkazin, Y., … Rudyk, S. (2017). Changing the Structure of Resin-Asphaltenes Molecules in Cracking. Eurasian Chemico-Technological Journal, 19(2), 147–154. https://doi.org/10.18321/ectj645

Issue

Vol. 19 No. 2 (2017)

Section

Articles

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