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

Research output: Contribution to journal › Article › Scientific › peer-review

6 Citations (Scopus)

33 Downloads (Pure)

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.

Original language	Undefined/Unknown
Pages (from-to)	3305–3313
Journal	JOM Journal of the Minerals, Metals and Materials Society
Volume	71
Issue number	9
DOIs	https://doi.org/10.1007/s11837-019-03464-1
Publication status	Published - 2019
MoE publication type	A1 Journal article-refereed

Keywords

SO3 formation
Flash smelting
Catalyzing oxide
Acid dew point corrosion

Access to Document

10.1007/s11837-019-03464-1

Catalytic role of process dust in SO2-to-SO3 conversion in FSHRB_Lehmusto_2019.pdfFinal published version, 1.22 MBLicence: CC BY

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

Cite this

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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",

author = "Juho Lehmusto and Tor Laur{\'e}n and Mari Lindgren",

year = "2019",

doi = "10.1007/s11837-019-03464-1",

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T1 - Catalytic Role of Process Dust in SO2-to-SO3 Conversion in Flash Smelting Heat Recovery Boilers

AU - Lehmusto, Juho

AU - Laurén, Tor

AU - Lindgren, Mari

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - SO3 formation

KW - Flash smelting

KW - Catalyzing oxide

KW - Acid dew point corrosion

KW - SO3 formation

KW - Flash smelting

KW - Catalyzing oxide

KW - Acid dew point corrosion

KW - SO3 formation

KW - Flash smelting

KW - Catalyzing oxide

KW - Acid dew point corrosion

U2 - 10.1007/s11837-019-03464-1

DO - 10.1007/s11837-019-03464-1

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JO - JOM Journal of the Minerals, Metals and Materials Society

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