Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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An Experimental Study on Conversion of Reducing Agent from Aqueous Urea Solutions under Low Reaction Temperature

저온 반응장에서 요소 수용액의 환원제 전환에 관한 실험적 연구

  • 구건우 (경북대학교 기계공학과) ;
  • 홍정구 (경북대학교 기계공학과)
  • Received : 2015.02.17
  • Accepted : 2015.03.20
  • Published : 2015.03.31
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Abstract

Urea-SCR which is one of the aftertreatment technologies for reducing the NOx emission is widely used. An experimental study was performed to investigate urea decomposition under various thermo-fluid conditions, with different temperatures and velocities of inflow gas, and urea solution quantities. 40 wt. % aqueous urea solutions were used in this study. The inflow gas conditions were similar to the exhaust conditions of a large marine engine. The spray performance of urea solution injector was identical under all experimental conditions. The conversion efficiency of $NH_3$ was larger than that of HNCO under all experimental conditions, unlike for the theoretical thermolysis reaction.

Keywords

References

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