Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air

Satu Tuurna, Pekka Pohjanne, S. Filander, A. Silvonen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Heavy fuel oils used in diesel engines contain residues of e.g. vanadium, sodium, calcium, sulfur, nickel and aluminum. Their amount varies depending on the source of the crude oil, refining methods as well as mixing ratio and handling process. During combustion these residues become concentrated in the ash. The sodium and vanadium levels are of major concern since they cause high temperature corrosion at temperatures over 500°C. During combustion, these elements oxidize and contribute to formation of semi-liquid and low melting salts causing increased fouling and corrosion of components. Higher efficiency and therefore higher operation temperature, and also lower quality fuels for economic reasons are future targets, and these create additional material challenges under already demanding conditions. The corrosion resistance of various currently used and new alternative materials under simulated medium speed diesel engine exhaust system environments was experimentally clarified. The selected materials were exposed at 650 and 750°C under moist synthetic air with Na 2CO 3-V 2O 5-CaSO 4 deposit up to 1000 h. The specimens were analyzed by means of cross-section microscopy
Original languageEnglish
Title of host publicationCorrosion conference and expo 2012
Pages3993-4001
Volume5
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
EventCorrosion conference and expo 2012: NACE International corrosion 2012 conference and expo - Salt Lake City, United States
Duration: 11 Mar 201215 Mar 2012

Publication series

SeriesNACE - International Corrosion Conference Series
ISSN0361-4409

Conference

ConferenceCorrosion conference and expo 2012
Abbreviated titleCORROSION2012
CountryUnited States
CitySalt Lake City
Period11/03/1215/03/12

Fingerprint

Exhaust systems (engine)
Deposits
Ashes
Vanadium
Diesel engines
Air
Sodium
Corrosion
High temperature operations
Residual fuels
Fuel oils
Fouling
Refining
Corrosion resistance
Calcium
Microscopic examination
Melting
Sulfur
Crude oil
Nickel

Keywords

  • Calcium
  • corrosion
  • deposit
  • diesel engine
  • high alloyed steel
  • Ni-based alloy
  • sodium
  • stainless steel
  • valve material
  • vanadium

Cite this

Tuurna, S., Pohjanne, P., Filander, S., & Silvonen, A. (2012). Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. In Corrosion conference and expo 2012 (Vol. 5, pp. 3993-4001). NACE - International Corrosion Conference Series
Tuurna, Satu ; Pohjanne, Pekka ; Filander, S. ; Silvonen, A. / Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. Corrosion conference and expo 2012. Vol. 5 2012. pp. 3993-4001 (NACE - International Corrosion Conference Series).
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abstract = "Heavy fuel oils used in diesel engines contain residues of e.g. vanadium, sodium, calcium, sulfur, nickel and aluminum. Their amount varies depending on the source of the crude oil, refining methods as well as mixing ratio and handling process. During combustion these residues become concentrated in the ash. The sodium and vanadium levels are of major concern since they cause high temperature corrosion at temperatures over 500°C. During combustion, these elements oxidize and contribute to formation of semi-liquid and low melting salts causing increased fouling and corrosion of components. Higher efficiency and therefore higher operation temperature, and also lower quality fuels for economic reasons are future targets, and these create additional material challenges under already demanding conditions. The corrosion resistance of various currently used and new alternative materials under simulated medium speed diesel engine exhaust system environments was experimentally clarified. The selected materials were exposed at 650 and 750°C under moist synthetic air with Na 2CO 3-V 2O 5-CaSO 4 deposit up to 1000 h. The specimens were analyzed by means of cross-section microscopy",
keywords = "Calcium, corrosion, deposit, diesel engine, high alloyed steel, Ni-based alloy, sodium, stainless steel, valve material, vanadium",
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Tuurna, S, Pohjanne, P, Filander, S & Silvonen, A 2012, Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. in Corrosion conference and expo 2012. vol. 5, NACE - International Corrosion Conference Series, pp. 3993-4001, Corrosion conference and expo 2012, Salt Lake City, United States, 11/03/12.

Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. / Tuurna, Satu; Pohjanne, Pekka; Filander, S.; Silvonen, A.

Corrosion conference and expo 2012. Vol. 5 2012. p. 3993-4001 (NACE - International Corrosion Conference Series).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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T1 - Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air

AU - Tuurna, Satu

AU - Pohjanne, Pekka

AU - Filander, S.

AU - Silvonen, A.

PY - 2012

Y1 - 2012

N2 - Heavy fuel oils used in diesel engines contain residues of e.g. vanadium, sodium, calcium, sulfur, nickel and aluminum. Their amount varies depending on the source of the crude oil, refining methods as well as mixing ratio and handling process. During combustion these residues become concentrated in the ash. The sodium and vanadium levels are of major concern since they cause high temperature corrosion at temperatures over 500°C. During combustion, these elements oxidize and contribute to formation of semi-liquid and low melting salts causing increased fouling and corrosion of components. Higher efficiency and therefore higher operation temperature, and also lower quality fuels for economic reasons are future targets, and these create additional material challenges under already demanding conditions. The corrosion resistance of various currently used and new alternative materials under simulated medium speed diesel engine exhaust system environments was experimentally clarified. The selected materials were exposed at 650 and 750°C under moist synthetic air with Na 2CO 3-V 2O 5-CaSO 4 deposit up to 1000 h. The specimens were analyzed by means of cross-section microscopy

AB - Heavy fuel oils used in diesel engines contain residues of e.g. vanadium, sodium, calcium, sulfur, nickel and aluminum. Their amount varies depending on the source of the crude oil, refining methods as well as mixing ratio and handling process. During combustion these residues become concentrated in the ash. The sodium and vanadium levels are of major concern since they cause high temperature corrosion at temperatures over 500°C. During combustion, these elements oxidize and contribute to formation of semi-liquid and low melting salts causing increased fouling and corrosion of components. Higher efficiency and therefore higher operation temperature, and also lower quality fuels for economic reasons are future targets, and these create additional material challenges under already demanding conditions. The corrosion resistance of various currently used and new alternative materials under simulated medium speed diesel engine exhaust system environments was experimentally clarified. The selected materials were exposed at 650 and 750°C under moist synthetic air with Na 2CO 3-V 2O 5-CaSO 4 deposit up to 1000 h. The specimens were analyzed by means of cross-section microscopy

KW - Calcium

KW - corrosion

KW - deposit

KW - diesel engine

KW - high alloyed steel

KW - Ni-based alloy

KW - sodium

KW - stainless steel

KW - valve material

KW - vanadium

M3 - Conference article in proceedings

SN - 978-1-6227-6078-7

VL - 5

T3 - NACE - International Corrosion Conference Series

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BT - Corrosion conference and expo 2012

ER -

Tuurna S, Pohjanne P, Filander S, Silvonen A. Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. In Corrosion conference and expo 2012. Vol. 5. 2012. p. 3993-4001. (NACE - International Corrosion Conference Series).