Corrosion in biomass combustion: A materials selection analysis and its interaction with corrosion mechanisms and mitigation strategies

Antunes, Renato Altobelli; Oliveira, Mara Cristina Lopes de

doi:10.1016/j.corsci.2013.07.013

Cited by 144 publications

(77 citation statements)

References 205 publications

(255 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The catastrophic corrosion observed is frequently explained by the active oxidation mechanism catalyzed by Cl [2,17,18,38]. Initiation and sustaining mechanisms for the corrosion process are still being discussed in literature [22,27,30,38,39]. For Cr-containing alloys under oxidizing conditions, the K-induced breakaway corrosion of the initial protective Cr2O3 layer has been reported as the initiation process (equation 1) [5,21,40].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…The HCl generated from this reaction is able dissociate under oxidizing conditions to give Cl2(g) (equation 3) [20,38,41], which migrates through the porous oxide (possibly through grain boundaries), to the metal bulk where it chlorinates the metal alloying elements, to generate metal chlorides.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

High Temperature Corrosion under Laboratory Conditions Simulating Biomass-Firing: A Comprehensive Characterization of Corrosion Products

Okoro¹,

Montgomery²,

Frandsen³

et al. 2014

Energy Fuels

View full text Add to dashboard Cite

An austenitic stainless steel (TP 347H FG) was coated with a synthetic deposit and exposed, under laboratory conditions simulating straw-firing at 560 °C, for 1 week. Microscopic, diffraction, and spectroscopic techniques were employed for cross-sectional and plan view “top-down” microstructural characterization of the corrosion products. The corrosion products consisted of three layers: (i) the outermost layer consists of a mixed layer of K2SO4 and Fe x O y on a partly molten layer of the initial deposit, (ii) the middle layer consists of spinel (FeCr2O4) and Fe2O3, and (iii) the innermost layer is a sponge-like Ni3S2-containing layer. At the corrosion front, Cl-rich protrusions were observed. Results indicate that selective corrosion of Fe and Cr by Cl, active oxidation, and sulfidation attack of Ni are possible corrosion mechanisms.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

High Temperature Corrosion under Laboratory Conditions Simulating Biomass-Firing: A Comprehensive Characterization of Corrosion Products

Okoro¹,

Montgomery²,

Frandsen³

et al. 2014

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…This is due to an aggressive environment that contains e.g. alkali salts and water combined with metal temperatures up to *550°C [1][2][3][4][5][6][7][8][9]. At such relatively low temperatures, chromia-forming alloys, such as FeCr and FeCrNi steels, are currently being used [10].…”

Section: Introductionmentioning

confidence: 99%

KCl-Induced Corrosion of an FeCrAl Alloy at 600 °C in O2 + H2O Environment: The Effect of Pre-oxidation

et al. 2014

View full text Add to dashboard Cite

The present study investigates the influence of H 2 O and KCl on the high temperature corrosion of an FeCrAl alloy at 600°C. Polished samples were exposed to O 2 or O 2 ? H 2 O and to O 2 ? H 2 O with KCl applied. The samples were investigated using SEM/EDX, XRD, IC, AES and SIMS. It was found that KCl accelerates corrosion and that a rapidly growing iron-rich oxide forms with time. Chromate formation is shown to initiate the formation of a non-protective oxide scale. Pre-oxidising the alloy before exposure in the presence of KCl had a strongly beneficial effect on the corrosion.

show abstract

“…KCl induced corrosion of high temperature materials has been the subject of a number of investigations [6][7][8][9][10][11][12][13] to clarify the mechanism of attack in order to pave the way for the development of advanced high temperature resistant materials. Laboratory investigations have shown that the alkali earth metal plays a role in the initial corrosion process [8,10,[14][15][16][17].…”

mentioning

confidence: 99%

Effect of Water Vapor on High-Temperature Corrosion under Conditions Mimicking Biomass Firing

Okoro¹,

Montgomery²,

Frandsen³

et al. 2015

Energy Fuels

View full text Add to dashboard Cite

The variable flue gas composition in biomass-fired plants, among other parameters, contributes to the complexity of high-temperature corrosion of materials. Systematic parameter studies are thus necessary to understand the underlying corrosion mechanisms. This paper investigates the effect of water (H 2 O) vapor content in the flue gas on the high-temperature corrosion of austenitic stainless steel (TP 347H FG) under laboratory conditions, to improve the understanding of corrosion mechanisms. Deposit-coated and deposit-free samples were isothermally exposed for 72 h in a synthetic flue gas atmosphere containing either 3 or 13 vol % H 2 O vapor. Comprehensive characterization of the corrosion products was carried out by the complementary use of microscopic, spectroscopic, and diffraction-based techniques. To evaluate the effect of the exposure time, results were compared to previous results with longer isothermal exposure over 168 h and indicated that the development of a Ni-rich layer as a result of selective attack was time-dependent. The increase in the water vapor decreased the measurable corrosion attack, and in addition, decreased sulfation was observed. Results from the current investigation and from previously reported findings suggest that an increase in the water vapor content will cause competitive adsorption on active sites.

show abstract

Corrosion in biomass combustion: A materials selection analysis and its interaction with corrosion mechanisms and mitigation strategies

Cited by 144 publications

References 205 publications

High Temperature Corrosion under Laboratory Conditions Simulating Biomass-Firing: A Comprehensive Characterization of Corrosion Products

High Temperature Corrosion under Laboratory Conditions Simulating Biomass-Firing: A Comprehensive Characterization of Corrosion Products

KCl-Induced Corrosion of an FeCrAl Alloy at 600 °C in O2 + H2O Environment: The Effect of Pre-oxidation

Effect of Water Vapor on High-Temperature Corrosion under Conditions Mimicking Biomass Firing

Contact Info

Product

Resources

About