Effect of Vanadium Oxide Loading for the Simultaneous NO Reduction and Hg0 Oxidation over a V2O5-WO3/TiO2 Catalyst

Park, Jung Ho; Nguyen, Thi Phuong Thao; Kim, Moon Hyeon; Hong, Yongseok

doi:10.1021/acs.iecr.3c03066

Ind. Eng. Chem. Res.

2023

DOI: 10.1021/acs.iecr.3c03066

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Effect of Vanadium Oxide Loading for the Simultaneous NO Reduction and Hg⁰ Oxidation over a V₂O₅-WO₃/TiO₂ Catalyst

Jung Ho Park,

Thi Phuong Thao Nguyen,

Moon Hyeon Kim

et al.

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2024

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Ammonium Chloride Powder Feeding for the Simultaneous Reduction of NOx and Oxidation of Hg⁰ in the SCR Process

Park,

Kim,

Hong

2024

Ind. Eng. Chem. Res.

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This study was dedicated to enhancing coal-fired power plant (CFPP) sustainability by enhancing the Hg 0 oxidation efficiency in the selective catalytic reduction (SCR) process by injecting powder NH 4 Cl. It is relatively harmless, energy-saving, and easy to handle, can be easily sublimated to NH 3 and HCl at the SCR-operating temperature, and can simultaneously reduce NO and oxidize Hg 0 . In the honeycomb-type H1.5-VWT, the Hg 0 oxidation efficiencies were 58.7 and 74.6% when HCl was supplied at 10 and 30 ppm, respectively, by powdered NH 4 Cl feeding. Shell mass balance-based models were developed to associate the performances of the powdered and honeycomb catalysts, and the surface area-normalized kinetic rates were evaluated. Ultimately, the NO reduction and Hg 0 oxidation efficiencies could be predicted based on the vanadia content, honeycomb size, and gas composition. Solid-phase NH 4 Cl injection can be conveniently applied in the SCR process and is expected to improve the sustainability of CFPPs.

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Ammonium Chloride Powder Feeding for the Simultaneous Reduction of NOx and Oxidation of Hg⁰ in the SCR Process

Park,

Kim,

Hong

2024

Ind. Eng. Chem. Res.

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Effect of Vanadium Oxide Loading for the Simultaneous NO Reduction and Hg⁰ Oxidation over a V₂O₅-WO₃/TiO₂ Catalyst

Cited by 1 publication

References 64 publications

Ammonium Chloride Powder Feeding for the Simultaneous Reduction of NOx and Oxidation of Hg⁰ in the SCR Process

Ammonium Chloride Powder Feeding for the Simultaneous Reduction of NOx and Oxidation of Hg⁰ in the SCR Process

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Effect of Vanadium Oxide Loading for the Simultaneous NO Reduction and Hg0 Oxidation over a V2O5-WO3/TiO2 Catalyst

Cited by 1 publication

References 64 publications

Ammonium Chloride Powder Feeding for the Simultaneous Reduction of NOx and Oxidation of Hg0 in the SCR Process

Ammonium Chloride Powder Feeding for the Simultaneous Reduction of NOx and Oxidation of Hg0 in the SCR Process

Contact Info

Product

Resources

About

Effect of Vanadium Oxide Loading for the Simultaneous NO Reduction and Hg⁰ Oxidation over a V₂O₅-WO₃/TiO₂ Catalyst

Ammonium Chloride Powder Feeding for the Simultaneous Reduction of NOx and Oxidation of Hg⁰ in the SCR Process

Ammonium Chloride Powder Feeding for the Simultaneous Reduction of NOx and Oxidation of Hg⁰ in the SCR Process