Catalytic Conversion of Multipollutants (Hg0/NO/Dioxin) with V2O5-WO3/TiO2 Catalysts

Wei Ting Hsu, Pao Chen Hung, Shu Hao Chang, Chyi Woei Young, Chi Lang Chen, Hsing Wang Li, Kuan Lun Pan, Moo Been Chang

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5 Scopus citations

Abstract

A multipollutant (Hg0/NO/dioxin)-containing gas-stream-generating system is developed to investigate the effectiveness of V2O5-WO3/TiO2 catalyst for multipollutant control. The results indicate that plate-type 1.52 wt% V2O5 performs much better than two other catalysts for oxidizing Hg0. With a higher vanadium loading of 1.52 wt% V2O5, higher Hg0 conversions (53-75%) are observed compared to 0.66 wt% V2O5 (45-68%) and 0.26 wt% V2O5 (32-63%) for simulated flue gas streams. In addition, the mercury oxidation activity significantly increases with increasing concentration of hydrogen chloride. For removal of PCDD/Fs, the results show that the removal efficiencies of PCDD/F congeners achieved with V2O5-WO3/TiO2 range from 50% to 65%. It is observed that the removal efficiency of highly chlorinated PCDD/Fs is slightly higher than that of low-chlorinated PCDD/Fs. Overall, plate-type catalyst of 1.52 wt% V2O5 shows the highest Hg0/NO/dioxin conversion and reduction efficiency among three catalysts evaluated.

Original languageEnglish
Pages (from-to)15195-15205
Number of pages11
JournalIndustrial and Engineering Chemistry Research
Volume57
Issue number44
DOIs
StatePublished - 7 Nov 2018

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