| 학회 | 한국화학공학회 |
| 학술대회 | 2008년 봄 (04/23 ~ 04/25, 제주ICC) |
| 권호 | 14권 1호, p.1307 |
| 발표분야 | 촉매 및 반응공학 |
| 제목 | The Effect of NH3 Slip Catalyst in Mobile Urea-SCR System on the NOx Reduction in Exhaust Gas of Diesel Vehicle |
| 초록 | EuroⅤregulation offers the possibility to reduce the ammonia slip below the target amount of 10 to 20ppm. For this reason, the SCR system needs more sensitive dosing control of AdBlue solution. Under the dynamic driving condition of diesel vehicle, an excess or untimely dosing of urea to exhaust gas causes NH3 slip from the SCR reactor. Even when urea solution is not injected, rapid increase in exhaust temperature can also result in NH3 slip, because the SCR catalyst can absorb the ammonia or ammonia precursor in low temperature and release ammonia as the temperature increases. NH3 slip catalyst is generally located behind SCR catalyst and reduces slipped NH3. Besides, it must be selective toward the formation of nitrogen rather than NOx or N2O. This study demonstrates that the SCR system with NH3 slip catalyst can reduce more amount of NOx in exhaust gas of diesel vehicle rather than without NH3 slip catalyst under ammonia slip amount of 20ppm through the engine-dynamo evaluation, especially ND-13 mode. |
| 저자 | 이성호1, 이관영2, 박용성3, 함윤영4, 김용우1, 오승훈1 |
| 소속 | 1SK에너지(주), 2고려대, 3교통안전공단 자동차성능(연), 4우석대 |
| 키워드 | NOx; Urea; AdBlue; SCR; NH3 Slip Catalyst; Diesel Vehicle |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
