표제지
목차
1. 서론 10
2. 이론적 고찰 14
2.1 저온 플라즈마 14
2.2 NH₃SCR 18
2.3 전력 계측 22
3. 실험장치 및 방법 25
3.1 실험장치 25
3.1.1 저온 플라즈마 발생장치 25
3.1.2 NH₃SCR 촉매 29
3.1.3 저온 플라즈마와 NH₃SCR 복합시스템 30
3.2 실험방법 34
3.2.1 플라즈마 반응기의 최적 설계 34
3.2.2 질소산화물의 전환율 및 제거율 34
3.2.3 NO/NOχ 최적 비율 38
4. 실험결과 및 고찰 39
4.1 저온 플라즈마 반응기의 최적화 39
4.2 저온 플라즈마 NH₃SCR 공정의 탈질 특성 44
4.3 NO/NOχ 최적 비율 52
5. 결론 54
참고문헌 55
ABSTRACT 58
감사의 글 61
Table 3.1 Specification of catalyst 29
Table 3.2 Specification of experimental equipment 32
Table 3.3 Exhaust gas composition and flow rate 35
Table 3.4 Test condition for NOx reduction 36
Table 4.1 NOx reduction of non-thermal plasma and NH3 SCR process 46
Fig 2.1 Configuration of non-thermal plasma reactors 16
Fig 2.2 Schematics of DBD 17
Fig 2.3 Schematic of De-NOx mechanism in NH₃ SCR 22
Fig 2.4 Lissajous diagram for plate type reactor 24
Fig 3.1 (a) Schmatic of cylindrical type reactor 27
Fig 3.1 (b) Direct Schmatic of cylindrical type reactor 28
Fig 3.2 Schmatic of plate type DBD reator 28
Fig 3.3 NH₃SCR catalyst 29
Fig 3.4 Experimental setup for the NTP and SCR NOx reduction process 30
Fig 3.5 Direct photograph of the experimental setup for the NTP and SCR NOx reduction process 31
Fig 3.6 Patallel plate type DBD reactor 33
Fig 3.7 Discharge image for NTP 33
Fig 3.8 Automated power measurement system with Lab-view 37
Fig 4.1 (a) NO removal characteristics of cyindrical type reactor for various gap distances with specific energy density 41
Fig 4.1 (b) NO removal characteristics of plate type reactor for various gap distances with specific energy density 41
Fig 4.2 (a) Micro-discharge patterns for cylindrical type reactor for various gap distances 42
Fig 4.2 (b) Micro-discharge patterns for plate type reactor for various gap distances 42
Fig 4.3 (a) Plasma distibution for cylindrical type reactor for various gap distances 43
Fig 4.3 (b) Plasma distibution for plate type reactor for various gap distances 43
Fig 4.4 NO to NO₂conversion in plasma reator 45
Fig 4.5 NOx reduction for each processes(plasma or SCR sole process) 47
Fig 4.6 Reduction characteristics of NH₃SCR process for 100% NO and 100% NO₂ 48
Fig 4.7 Effect of HC(C3H6) on NOx reduction with the SCR reactor 49
Fig 4.8 NOx reduction characteristics for various experimental conditions 51
Fig 4.9 NO/NOx ratios for various experimental conditions 52
Fig 4.10 NOx reduction characteristics for various NO/NOx ratio 53