Journal of Applied Electrochemistry

, Volume 41, Issue 3, pp 317–320 | Cite as

Development of a new electrochemical methodology at carbon steel/Na2S system for corrosion monitoring in oil refineries

  • P. R. Silva
  • H. A. Ponte
  • M. J. J. S. Ponte
  • N. M. S. Kaminari
Original Paper
First Online:
Received:
Accepted:

Abstract

The current trend for processing more aggressive crude oils has resulted in a considerable increase of corrosion and hydrogen damage at Fluid Catalytic Cracking Units in Brazil. Therefore, it was proposed a new method for on-line and real time corrosion monitoring: evaluation of the integrity of the iron sulfide film by the voltammetric technique. This methodology would allow one to detect and inhibit the destruction of the sulfide layer by cyanide ions before a significant amount of hydrogen is generated and permeates the steel. Therefore, the lifetime of industrial equipment would be considerably improved. The feasibility of the proposed methodology was validated through bench scale tests.

Keywords

Corrosion monitoring Cyclic voltammograms H2S corrosion Cyanide Hydrogen permeation Iron sulfide 
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Notes

Acknowledgments

The authors are grateful to the Brazilian National Agency of Petroleum, Natural Gas and Biofuels (ANP) for a postgraduate grant; to FINEP (Research and Projects Financing)/CTPetro (Science and Technology of Petroleum) for financial support, to Federal University of Paraná (UFPR) for provision of laboratory facilities and to PETROBRAS (SIX Unit) for technical and economic involvement in this research.

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • P. R. Silva
    • 1
  • H. A. Ponte
    • 1
  • M. J. J. S. Ponte
    • 2
  • N. M. S. Kaminari
    • 1
  1. 1.Laboratory of Surface Electrochemistry and Corrosion (LESC), Department of Chemical TechnologyFederal University of Paraná (UFPR)CuritibaBrazil
  2. 2.Department of Mechanical EngineeringFederal University of Paraná (UFPR)CuritibaBrazil

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