The Effect of Deposit Temperature on the Catalytic SO₂-to-SO₃ Conversion in a Copper Flash Smelting Heat Recovery Boiler

Juho Lehmusto; Emil Vainio; Tor Laurén; Mari Lindgren

doi:10.1007/s11663-017-1130-6

The Effect of Deposit Temperature on the Catalytic SO₂-to-SO₃ Conversion in a Copper Flash Smelting Heat Recovery Boiler

Juho Lehmusto, Emil Vainio, Tor Laurén, Mari Lindgren

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

5 Citations (Scopus)

Abstract

The aim of the work was to study the catalytic role of copper flash smelter deposit in the SO₂-to-SO₃ conversion. In addition, the effect of process gas temperature at 548 K to 1173 K (275 °C to 900 °C) on the amount of SO₃ formed was addressed both in the absence and presence of genuine copper flash smelter deposit. The SO₃ conversion rate changed as a function of process gas temperature, peaking at 1023 K (750 °C). A dramatic increase in the SO₂-to-SO₃ conversion was observed when process dust was present, clearly indicating that process dust catalyzes the SO₂-to-SO₃ conversion. Based on these results, the catalytic ability of the deposit may lead to sulfuric acid dew point corrosion.

Original language	Undefined/Unknown
Pages (from-to)	434–439
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	49
Issue number	1
DOIs	https://doi.org/10.1007/s11663-017-1130-6
Publication status	Published - 2018
MoE publication type	A1 Journal article-refereed

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10.1007/s11663-017-1130-6

Cite this

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title = "The Effect of Deposit Temperature on the Catalytic SO₂-to-SO₃ Conversion in a Copper Flash Smelting Heat Recovery Boiler",

abstract = "The aim of the work was to study the catalytic role of copper flash smelter deposit in the SO2-to-SO3 conversion. In addition, the effect of process gas temperature at 548 K to 1173 K (275 °C to 900 °C) on the amount of SO3 formed was addressed both in the absence and presence of genuine copper flash smelter deposit. The SO3 conversion rate changed as a function of process gas temperature, peaking at 1023 K (750 °C). A dramatic increase in the SO2-to-SO3 conversion was observed when process dust was present, clearly indicating that process dust catalyzes the SO2-to-SO3 conversion. Based on these results, the catalytic ability of the deposit may lead to sulfuric acid dew point corrosion.",

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The Effect of Deposit Temperature on the Catalytic SO₂-to-SO₃ Conversion in a Copper Flash Smelting Heat Recovery Boiler. / Lehmusto, Juho ; Vainio, Emil ; Laurén, Tor et al.
In: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 49, No. 1, 2018, p. 434–439.

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

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