Performance Improvement in Semi-dry Ozone Injection NO_x and SO_x Removal Process for a Glass Furnace Flue Gas

ABSTRACT

A combined ozone injection and semi-dry chemical NO_x and SO_x removal process using nonthermal plasma for the treatment of flue gases emitted from glass melting furnaces has been proposed. To further improve the NO_x removal, O₃ was injected in directions opposite to the direction of gas flow at the center of the semi-dry reactor. Moreover, the effect of the increase in initial concentrations of NO and SO₂ was investigated. In addition, the effect of the gas flow rate on NO oxidation, denitration, and desulfurization efficiencies, and the effect of NaOH and ${\mathrm{S}\mathrm{O}}_3^{2-}$ concentrations on denitration and desulfurization efficiencies were investigated.

KEYWORDS:

• Glass melting furnace
• Nonthermal plasma
• NO_x
• Ozone
• Semi-dry process
• SO_x

Acknowledgments

We would like to thank Mr. Y. Mizuguchi and Mr. R. Kinoshita, who were students at Osaka Prefecture University at the time this study was conducted. This study was subsidized by a project fund (Strategic Innovation Program for Energy Conservation Technologies: JPNP12004) of the New Energy and Industrial Technology Development Organization (NEDO).

Disclosure statement

No potential conflict of interest was reported by the author(s).