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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.4
- 수록면
- 1 - 11 (11page)
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이 논문의 연구 히스토리 (10)
2014
2012
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The aim of this study is to investigate the effect of SCR reactor on the exhaust emissions characteristics in order to develop a urea-SCR aftertreatment system for reducing NO<SUB>x</SUB> emissions. The experiments are conducted by using a flue tube LPG steam boiler with the urea-SCR aftertreatment system. The urea-SCR aftertreatment system utilizes the ammonia converted from 17% aqueous urea solution injected in front of SCR catalyst as a reducing agent for reducing NO<SUB>x</SUB> emissions. The equivalence ratio, urea injection amount, ammonia slip and NOx conversion efficiency relative to boiler load are applied to discuss the experimental results. In this experiment, the average equivalence ratio is calculated by changing only the fuel consumption rate while the intake air amount is constantly fixed at 25,957.11 ㎤/sec. The average equivalence ratios are 1.38, 1.11, 0.81 and 0.57 when boiler loads are 100, 80, 60 and 40%. The NO<SUB>x</SUB> conversion efficiency is raised with increasing urea injection amount, and NH3 slip is also boosted at the same time. Consequently, the NO<SUB>x</SUB> conversion efficiency relative to boiler load should be examined in combination with urea injection amount and NH₃ slip. The results are calculated by 89, 85, 77 and 79% for the boiler loads of 100, 80, 60 and 40%. The appropriate amount of urea injection for the respective boiler load can be not discussed by only NOx emissions, and should be determined by considering the NO<SUB>x</SUB> conversion efficiency, NH3 slip and reactive activation temperature simultaneously. In this study, the urea amounts of 230, 235, 233 and 231 mg/min are injected at the boiler loads of 100, 80, 60 and 40%, and the final NH3 slips are measured by 8.48, 5.58, 11.97 and 11.34 ppm at the same conditions. THC emission is affected by the SCR reactor under other experimental conditions except 100% engine load, and CO emission at only 40% engine load. The rest of exhaust emissions are not affected by the SCR reactor under all experimental conditions.
목차
Abstract
1. 서론
2. 실험 장치 및 방법
3. 실험 결과 및 고찰
4. 결론
References
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UCI(KEPA) : I410-ECN-0101-2015-550-001372981