A kinetic study on medium temperature desulfurization using a natural manganese ore

Yeo Il Yoon; Myung Wook Kim; Yong Seung Yoon; Sung Hyun Kim

doi:10.1016/S0009-2509(03)00055-1

A kinetic study on medium temperature desulfurization using a natural manganese ore

Yeo Il Yoon, Myung Wook Kim, Yong Seung Yoon, Sung Hyun Kim

* Honorary professors

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

16 Citations (Scopus)

Abstract

Natural manganese ores were selected as raw materials for the desulfurization sorbent because of economical efficiency and high reactivity on hydrogen sulfide. Initial reaction rates between H₂S and desulfurization sorbent of natural manganese ores were determined in a temperature range of 400-800°C using a thermobalance reactor. All reactions were first order with respect to H₂S and were expressed by the Arrhenius relation. When the sulfidation reaction was controlled by diffusion, the temperature dependence of the effective diffusivity was given by the Arrhenius equation. Activation energies and frequency factors were obtained from the product layer diffusion coefficient of various sorbents by plotting as an Arrhenius equation form. Several additives were mixed to improve the sulfidation capacity, and NiO was the best additive.

Original language	English
Pages (from-to)	2079-2087
Number of pages	9
Journal	Chemical Engineering Science
Volume	58
Issue number	10
DOIs	https://doi.org/10.1016/S0009-2509(03)00055-1
Publication status	Published - 2003 May

Keywords

Effective diffusivity
High temperature desulfurization
IGCC
Natural manganese ores

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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10.1016/S0009-2509(03)00055-1

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title = "A kinetic study on medium temperature desulfurization using a natural manganese ore",

abstract = "Natural manganese ores were selected as raw materials for the desulfurization sorbent because of economical efficiency and high reactivity on hydrogen sulfide. Initial reaction rates between H2S and desulfurization sorbent of natural manganese ores were determined in a temperature range of 400-800°C using a thermobalance reactor. All reactions were first order with respect to H2S and were expressed by the Arrhenius relation. When the sulfidation reaction was controlled by diffusion, the temperature dependence of the effective diffusivity was given by the Arrhenius equation. Activation energies and frequency factors were obtained from the product layer diffusion coefficient of various sorbents by plotting as an Arrhenius equation form. Several additives were mixed to improve the sulfidation capacity, and NiO was the best additive.",

keywords = "Effective diffusivity, High temperature desulfurization, IGCC, Natural manganese ores",

author = "{Il Yoon}, Yeo and {Wook Kim}, Myung and {Seung Yoon}, Yong and Kim, {Sung Hyun}",

note = "Funding Information: This study was supported by a Korea University Grant and we express our appreciation to the Department of Research Support, Korea University. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2003",

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doi = "10.1016/S0009-2509(03)00055-1",

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AU - Il Yoon, Yeo

AU - Wook Kim, Myung

AU - Seung Yoon, Yong

AU - Kim, Sung Hyun

N1 - Funding Information: This study was supported by a Korea University Grant and we express our appreciation to the Department of Research Support, Korea University. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2003/5

Y1 - 2003/5

N2 - Natural manganese ores were selected as raw materials for the desulfurization sorbent because of economical efficiency and high reactivity on hydrogen sulfide. Initial reaction rates between H2S and desulfurization sorbent of natural manganese ores were determined in a temperature range of 400-800°C using a thermobalance reactor. All reactions were first order with respect to H2S and were expressed by the Arrhenius relation. When the sulfidation reaction was controlled by diffusion, the temperature dependence of the effective diffusivity was given by the Arrhenius equation. Activation energies and frequency factors were obtained from the product layer diffusion coefficient of various sorbents by plotting as an Arrhenius equation form. Several additives were mixed to improve the sulfidation capacity, and NiO was the best additive.

AB - Natural manganese ores were selected as raw materials for the desulfurization sorbent because of economical efficiency and high reactivity on hydrogen sulfide. Initial reaction rates between H2S and desulfurization sorbent of natural manganese ores were determined in a temperature range of 400-800°C using a thermobalance reactor. All reactions were first order with respect to H2S and were expressed by the Arrhenius relation. When the sulfidation reaction was controlled by diffusion, the temperature dependence of the effective diffusivity was given by the Arrhenius equation. Activation energies and frequency factors were obtained from the product layer diffusion coefficient of various sorbents by plotting as an Arrhenius equation form. Several additives were mixed to improve the sulfidation capacity, and NiO was the best additive.

KW - Effective diffusivity

KW - High temperature desulfurization

KW - IGCC

KW - Natural manganese ores

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ER -

A kinetic study on medium temperature desulfurization using a natural manganese ore

Abstract

Keywords

ASJC Scopus subject areas

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