Catalytic Role of Process Dust in SO2-to-SO3 Conversion in Flash Smelting Heat Recovery Boilers

Juho Lehmusto; Tor Laurén; Mari Lindgren

doi:10.1007/s11837-019-03464-1

Catalytic Role of Process Dust in SO2-to-SO3 Conversion in Flash Smelting Heat Recovery Boilers

Juho Lehmusto, Tor Laurén, Mari Lindgren

Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review

6 Citeringar (Scopus)

32 Nedladdningar (Pure)

Sammanfattning

The aim of this work is to examine the catalytic role of copper smelter, copper converter, and nickel smelter process dusts in SO₂-to-SO₃ conversion at 750 ^oC. To clarify the role of specific oxides in greater detail, synthetic dusts containing varying concentrations of either CuO or Fe₃O₄ were also studied. All studied dusts catalyzed SO₃ conversion. Among the industrial flue dusts, the highest concentration of SO₃ formed in the presence of copper smelter dust. Comparing individual oxides, CuO had a greater impact on the SO₃ formation. Such catalytic effects of smelter dusts may lead to SO₃ concentrations in theprocess gas so high that sulfuric acid dew point corrosion may occur.

Originalspråk	Odefinierat/okänt
Sidor (från-till)	3305–3313
Tidskrift	JOM Journal of the Minerals, Metals and Materials Society
Volym	71
Nummer	9
DOI	https://doi.org/10.1007/s11837-019-03464-1
Status	Publicerad - 2019
MoE-publikationstyp	A1 Tidskriftsartikel-refererad

Nyckelord

SO3 formation
Flash smelting
Catalyzing oxide
Acid dew point corrosion

Åtkomst av dokument

10.1007/s11837-019-03464-1

Catalytic role of process dust in SO2-to-SO3 conversion in FSHRB_Lehmusto_2019.pdfSlutlig publicerad version, 1,22 MBLicens: CC BY

http://urn.fi/URN:NBN:fi-fe2020100882941

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title = "Catalytic Role of Process Dust in SO2-to-SO3 Conversion in Flash Smelting Heat Recovery Boilers",

abstract = "The aim of this work is to examine the catalytic role of copper smelter, copper converter, and nickel smelter process dusts in SO2-to-SO3 conversion at 750 oC. To clarify the role of specific oxides in greater detail, synthetic dusts containing varying concentrations of either CuO or Fe3O4 were also studied. All studied dusts catalyzed SO3 conversion. Among the industrial flue dusts, the highest concentration of SO3 formed in the presence of copper smelter dust. Comparing individual oxides, CuO had a greater impact on the SO3 formation. Such catalytic effects of smelter dusts may lead to SO3 concentrations in theprocess gas so high that sulfuric acid dew point corrosion may occur.",

keywords = "SO3 formation, Flash smelting, Catalyzing oxide, Acid dew point corrosion, SO3 formation, Flash smelting, Catalyzing oxide, Acid dew point corrosion, SO3 formation, Flash smelting, Catalyzing oxide, Acid dew point corrosion",

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KW - Acid dew point corrosion

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KW - Flash smelting

KW - Catalyzing oxide

KW - Acid dew point corrosion

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