Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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The Effect of Additive Catalyst according to Thermal Aging of Vanadia SCR

Vanadia SCR의 열적 열화에 따른 조촉매의 영향

  • Seo, Choong-Kil (Department of Automotive & Mechanical Engineering, Howon University)
  • 서충길 (호원대학교 자동차.기계공학과)
  • Received : 2014.02.06
  • Accepted : 2014.04.28
  • Published : 2014.06.30
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Abstract

The purpose of the study is to investigate the effect of additive catalyst according to the thermal aging of vanadia SCR catalysts. At a fresh condition, the $3V_2O_5-5WO_5-92TiO_2$ SCR showed the highest NOx conversion rate of about 30%, the performance of 5 kinds of SCR to which additive catalysts were added was not improved due to the insignificant effect of acid site control. For catalysts aged for 12h at $700^{\circ}C$, the SCR to which 3wt% Zeolite was added decreased in NOx conversion rate by 2.5% on average compared to the fresh SCR, it showed higher thermal durability than other additive catalyst. For 3Zeolite with high performance of NOx conversion rate during thermal aging, the Zeolite with stronger durability at a high temperature than other 5 kinds of SCR catalysts decreased the sintering of catalysts.

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References

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