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.

中文翻译：

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V ₂ O ₅ –WO ₃ / TiO ₂催化剂对多污染物（Hg ⁰ / NO /二恶英）的催化转化

为了研究V ₂ O ₅ -WO ₃ / TiO ₂催化剂对多污染物控制的有效性，开发了一种含多污染物（Hg ⁰ / NO /二恶英）的气流发生系统。结果表明，板式1.52 wt％V ₂ O ₅的氧化性能优于其他两种Hg ⁰氧化催化剂。在钒含量为1.52 wt％V ₂ O _{5的情况下}，相比于0.66 wt％V ₂ O ₅（45-68％）和0.26 wt％V ₂ O _5，可以观察到更高的Hg ⁰转化率（53–75％）。（32–63％）用于模拟烟气流。另外，汞的氧化活性随着氯化氢浓度的增加而显着增加。对于PCDD / F的去除，结果表明，用V ₂ O ₅ -WO ₃ / TiO ₂去除PCDD / F同类物的效率为50％至65％。可以看出，高氯化物PCDD / Fs的去除效率略高于低氯化物PCDD / Fs的去除效率。总体而言，在所评估的三种催化剂中，1.52 wt％V ₂ O _5的板式催化剂显示出最高的Hg ⁰ / NO /二恶英转化率和还原效率。