Deposition of suspended magnetite in high temperature high pressure boiler environments

Balaji Raman, Derek Hall, Stephen J. Shulder, Michael Caravaggio, Serguei Lvov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Suspended magnetite particles in boiler waters were found to deposit in orifice headers, impeding flow and causing inefficiencies and boiler tube failures from overheating. Particle interactions due to the zeta potential developed on the colloidal magnetite particles could also be a factor in deposition. To study the mechanism behind the deposition of suspended magnetite on stainless steel, a high temperature high pressure electrophoretic deposition cell with provisions to test 304 stainless steel substrates has been developed. The tests, conducted at pH25°C of 9.3 in simulated boiler conditions in terms of temperature, pressure and water chemistry. The deposition was monitored using in-situ Electrochemical Impedance Spectroscopy (EIS) and post-test surface analyses were carried out on the substrate. The results of the tests concurred with the theory on oxide particle behavior in aqueous systems and colloidal stability. The specific conditions in the boiler that favor deposition have been successfully replicated.

Original languageEnglish (US)
Title of host publicationElectrochemical Engineering General Session
EditorsE. J. Taylor, V. Subramanian, V. K. Ramani
PublisherElectrochemical Society Inc.
Pages43-56
Number of pages14
Volume66
Edition21
ISBN (Electronic)9781607685395
DOIs
StatePublished - Jan 1 2015
EventSymposium on Electrochemical Engineering General Session - 227th ECS Meeting - Chicago, United States
Duration: May 24 2015May 28 2015

Other

OtherSymposium on Electrochemical Engineering General Session - 227th ECS Meeting
CountryUnited States
CityChicago
Period5/24/155/28/15

Fingerprint

High pressure boilers
Magnetite
Boilers
Stainless steel
Temperature
Particle interactions
Substrates
Zeta potential
Orifices
Electrochemical impedance spectroscopy
Deposits
Oxides
Water

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Raman, B., Hall, D., Shulder, S. J., Caravaggio, M., & Lvov, S. (2015). Deposition of suspended magnetite in high temperature high pressure boiler environments. In E. J. Taylor, V. Subramanian, & V. K. Ramani (Eds.), Electrochemical Engineering General Session (21 ed., Vol. 66, pp. 43-56). Electrochemical Society Inc.. https://doi.org/10.1149/06621.0043ecst
Raman, Balaji ; Hall, Derek ; Shulder, Stephen J. ; Caravaggio, Michael ; Lvov, Serguei. / Deposition of suspended magnetite in high temperature high pressure boiler environments. Electrochemical Engineering General Session. editor / E. J. Taylor ; V. Subramanian ; V. K. Ramani. Vol. 66 21. ed. Electrochemical Society Inc., 2015. pp. 43-56
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Raman, B, Hall, D, Shulder, SJ, Caravaggio, M & Lvov, S 2015, Deposition of suspended magnetite in high temperature high pressure boiler environments. in EJ Taylor, V Subramanian & VK Ramani (eds), Electrochemical Engineering General Session. 21 edn, vol. 66, Electrochemical Society Inc., pp. 43-56, Symposium on Electrochemical Engineering General Session - 227th ECS Meeting, Chicago, United States, 5/24/15. https://doi.org/10.1149/06621.0043ecst

Deposition of suspended magnetite in high temperature high pressure boiler environments. / Raman, Balaji; Hall, Derek; Shulder, Stephen J.; Caravaggio, Michael; Lvov, Serguei.

Electrochemical Engineering General Session. ed. / E. J. Taylor; V. Subramanian; V. K. Ramani. Vol. 66 21. ed. Electrochemical Society Inc., 2015. p. 43-56.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Raman B, Hall D, Shulder SJ, Caravaggio M, Lvov S. Deposition of suspended magnetite in high temperature high pressure boiler environments. In Taylor EJ, Subramanian V, Ramani VK, editors, Electrochemical Engineering General Session. 21 ed. Vol. 66. Electrochemical Society Inc. 2015. p. 43-56 https://doi.org/10.1149/06621.0043ecst