Advertisement

Journal of Thermal Analysis and Calorimetry

, Volume 117, Issue 3, pp 1357–1363 | Cite as

Thermal evaluation of heavy crude oil by simultaneous TG-DSC-FTIR: Part 2

  • Michelle G. Mothé
  • Cheila G. Mothé
  • Carlos H. M. Carvalho
  • Marcia C. Khalil de Oliveira
Article

Abstract

In this work a continuous investigation of the thermal behavior of two heavy crude oils, P2 and P4, from Brazilian basin was performed using simultaneous technique TG-DSC-FTIR. In previous publication—Part 1, about these same oils at nitrogen atmosphere, it was identified for P2 sample that the main evolved component was 1-dodecyl-4-octyl-cyclohexane at 450 °C and for P4 sample the main component was evolved at 340 °C referent to 1-methyl cyclohexene. The simultaneous technique TG/FTIR was also performed for the present study in synthetic air atmosphere and was more elucidative than analysis in nitrogen atmosphere. For heavy oil P2, there was identified the presence of carbon dioxide, carbon monoxide and 4-methylcyclohexanone at 382 °C. Whilst for sample P4 the gaseous components evolved at 454 °C were carbon dioxide, carbon monoxide and 1-methylcyclohexene. Also differences in TG analysis for both samples were observed regarding the number of components. In air atmosphere crude oil P2 exhibited three decomposition stages, in nitrogen were only two. Four stages were exhibited on the thermogravimetric curve for oil P4 in synthetic air, while in nitrogen atmosphere there were three stages. Thus, this study has a unique character regarding the use of combined simultaneous techniques as STA/FTIR to identify components in heavy oil which may contribute to upgrade methods referring to crude oil composition.

Keywords

Heavy crude oil Thermal analysis Simultaneous TG-DSC-FTIR 

Notes

Acknowledgements

The authors would like to thank Petrobras and the Brazilian Council for Scientific and Technological Development (CNPq) for their financial support and NETZSCH - Geratebau GmbH Applications Laboratory.

References

  1. 1.
    ANP. Brazilian statistical yearbook of petroleum, natural gas and biofuels. 2013.Google Scholar
  2. 2.
    Hasan SA, Ghannam MT, Esmail N. Heavy crude oil viscosity reduction and rheology for pipeline transportation. Fuel. 2010;89:1095–100.CrossRefGoogle Scholar
  3. 3.
    Brown LD. Flow Assurance: Aπ3 discipline. OTC 14010, 2002.Google Scholar
  4. 4.
    Martinez-Palou R, Mosqueira ML, Zapata-Rendon B, Mar-Juarez E, Bernal-Huicochea C, Clavel-Lopez JC, Aburto J. Transportation of heavy and extra-heavy crude oil by pipeline—a review. J Petrol Sci Eng. 2010. doi: 10.1016/j.petrol.2010.11.020.Google Scholar
  5. 5.
    Mothé MG, Carvalho CHM, Jossic L, Mothé CG. Rheological behavior of biopolymers on light and heavy crude oils. Int J Rheol. 2013;01:41–3.Google Scholar
  6. 6.
    Amim A, Dutta-Roy K. Closing the flow assurance loop. Flow assurance, E&P. New York: Hart energy Publishing; 2005.Google Scholar
  7. 7.
    Kök MV, Acar C. Kinetics of crude oils combustion. J Therm Anal Calorim. 2006;83:445–9.CrossRefGoogle Scholar
  8. 8.
    Ali MA, Siddiqui MAB, Zaidi SMJ. Thermal analysis of crude oils and comparison with SIMDIST and TBP distillation data. J Therm Anal Calorim. 1998;51:307–19.CrossRefGoogle Scholar
  9. 9.
    Mothé MG, Leite LFM, Mothé CG. Kinetic parameters of different asphalt binders by thermal analysis. J Therm Anal Calorim. 2011;106:679–84.CrossRefGoogle Scholar
  10. 10.
    Mothé MG, Carvalho CHM, Sérvulo EFC, Mothé CG. Kinetic study of heavy crude oils by thermal analysis. J Therm Anal Calorim. 2012. doi: 10.1007/s10973-012-2574-1.Google Scholar
  11. 11.
    Mothé MG, Mothé CG, Carvalho CHM, Oliveira MCK. Thermal investigation of heavy crude oil by simultaneous TG-DSC-FTIR and EDXRF—Part 1. J Therm Anal Calorim. 2013. doi: 10.1007/s10973-013-3124-1.Google Scholar
  12. 12.
    Raje N, Aacherekar DA, Reddy AVR. Compositional characterization of carbon electrode material: a study using simultaneous TG–DTA–FTIR. Thermochim Acta. 2009;496:143–50.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  • Michelle G. Mothé
    • 1
  • Cheila G. Mothé
    • 1
  • Carlos H. M. Carvalho
    • 2
  • Marcia C. Khalil de Oliveira
    • 2
  1. 1.School of ChemistryFederal University of Rio de JaneiroRio de JaneiroBrazil
  2. 2.Petrobras R&D Center - CENPESRio de JaneiroBrazil

Personalised recommendations