Vol. 24 No. 1 (2021) Cover Image
Vol. 24 No. 1 (2021)

Published: July 31, 2021

Pages: 26-29

Articles

Study the Effect of Corrosion and Scale Inhibitors on Corrosion Rate of Carbon Steel in Cooling Towers Unit in Oil Refineries

Mazin Nabih Ali 1
1 College of Enginerring- Al-iraqia university
History
  • Received: August 15, 2020
  • Revised: December 13, 2020
  • Accepted: January 23, 2021
  • Available Online: July 7, 2021
DOI

https://doi.org/10.29194/NJES.24010026

Abstract

In the present work the effect of Corrosion & Scale Inhibitor was evaluated by using of the commercial product (Kurita S2050) that mainly containing of (Na2HPO4) sodium phosphate as corrosion inhibitor and (C6H11NaO7) sodium glocunate as scale inhibitor & dispersant. The dosing rate of this chemical was controlled according to the treatment system depend mainly on the monitoring of LI & RI indexes for (30) days treatment in the cooling tower unit of Al-Dora Oil refinery-Baghdad. The corrosion rate and the corrosion inhibitors efficiency were calculated by measurement of weight loss in standard test coupon (AISI 1010). After 30 day of the Field Test, the result show that the treatment program performance was effective in the corrosion & scale inhibition through an acceptable corrosion rate less than 0.018 in gmd. Also the result of corrosion rate was analyzed statistically by using of (ANN) to formulate a prediction equation to corrosion rate identification.

Keywords

References

  1. Perry R.H. and C.H. Chilton, Chem Eng. Hand-Book, 6 th Ed., Mc Graw Hill, 1998.
  2. Ming-Kai Hsieh, Heng Li, Shih-Hsiang Chien, Jason D. Monnell, Indranil Chowdhury, David A. Dzombak and Radisav D. Vidic, Corrosion Control When Using Secondary Treated Municipal Wastewater as Alternative Makeup Water for Cooling Tower Systems, Water Environment Research, Volume 82, No.12, pp2-4, 2010.
  3. Adnan S.Abdul Nabi and Hanan M.Ali, Corrosion Inhibition of Carbon steel on Hydrochloric acid Using Zizyphus Spina – Chritisi Extract, Ournal Basrah Researches (Sciences), Vol. 35, No. 1,pp12-14. 2009.
  4. Dina Raheem, Effect of Mixed Corrosion Inhibitors in Cooling Water System, Water Environment Research, Volume 82, Number 12 Al-Khwarizmi Engineering Journal, Vol. 7, No. 4, pp76- 87, 2011.
  5. G. S. Vasyliev, The influence of flow rate on corrosion of mild steel in hot tap water, Corrosions Sciences research .,Vol. 98, No.2, pp33-39, 2015.
  6. N.O. Eddy, in: S.K. Sharma (Ed.), Green corrosion chemistry and engineering: opportunities and challenges, John Wiley & Sons, 2011.
  7. S. Takasaki, Development of Environmentally Acceptable Technology for Cooling Water Treatment, Zairyo-to-Kankyo, Vol. 64, No.2, pp114-120, 2015
  8. K. Otani, M. Sakairia, R. Sasaki, A. Kaneko, Y. Seki, Effect of metal cations on corrosion behavior and surface film structure of the A3003 aluminum alloy in model tap waters, J. Solid State Electrochem.,Vol.18, pp325-332, 2014.
  9. Ulig, H.H., Corrosion and Corrosion Control, 3 rd Edition. Wiley-Interscience Publicatio, Newyork, 1985.
  10. Perry R.H. and C.H. Chilton, Chem Eng. Hand-Book, 6 th Ed., Mc Graw Hill, 1998