||Reduction of Traditional Pollutants and PCDD/Fs in the Flue Gas of a Diesel-Fueled Engine by Employing Catalytic Ceramic Fiber Filter (CCFF)
||Department of Environmental Engineering
catalytic ceramic fiber filter
Several technology was designed to treating the hazardous gasses and particle as polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofurans (PCDD/Fs) or as well-known as Dioxin and particulate matter (PM) and also the traditional gasses of flue gas from heavy-duty diesel engine. The most widely used are activated carbon-bag house injection filtration (ACI-BF), electrostatic precipitator (EP), selective catalytic reduction (SCR), combining EP-SCR and so on, which have been proven as a good abatement that reached a high level of removal efficiency, however those were only removing instead destroying both emission, also in the end of employing those technology, then demands other treatment beyond it. Thus, are costly treatments, hence catalytic-based technology has been developing to be able to control both emission gaseous and particulate phase. Ceramic catalytic fiber filter (CCFF) is trying to take a part of it. Additionally, it has been designed in two functions, which are suitable to treat diphase emission, are gaseous and particle. CCFF is a combined-technology of both catalytic-based and filtration-based. Fiber and catalyst substance are a based-materials which used in CCFF. Vanadium oxide and titanium oxide (V2O5/TiO5) is a good combination, yet low costly that have been trusted as the main items within the catalyst. This study is tried to investigating the performance of CCFF at 150–350°C, the highest removal efficiency (RE) of PCDD/Fs I-TEQ was 99.4% at 175°C, and nonetheless at 250–350 ° C a de novo synthesis followed and change RE value. Furthermore, RE of PM reached 94.4–98.5%, while those of CO and NOx were >90% and >70% at different temperatures.
Thus, CCFF could be effective to treat other emission in flue gas, yet as a consequent at certain operation temperature.
List of Tables vii
List of Figures viii
Chapter 1 Introduction 1
1.1 Background 1
1.2 Objectives 2
1.3 Overview 3
Chapter 2 Literature Review 4
2.1 PCDD/Fs 4
2.1.1. Overview of PCDD/Fs 4
2.1.2. Characteristic of PCDD/Fs 5
2.1.3. Properties of PCDD/Fs 5
2.1.4. Formation pathway of PCDD/Fs 6
2.1.5. Sources of PCDD/Fs and other gaseous production 8
2.2 Catalyst as the abatement technology for PCDD/Fs 9
Chapter 3 Methodology 13
3.1 Study Design 13
3.2 Methodology for implementation the performance of Catalyst Ceramic Fiber Filter (CCFF) 17
3.2.1. Materials and equipment 17
3.3 Experimental set-up 17
3.3.1. Monitoring performance of heavy-duty diesel engine 19
3.3.2. Sampling and analysis of PCDD/Fs 21
Chapter 4 Results and Discussion 25
4.1 Performance of heavy-duty diesel engine 25
4.2 Flue gas production during the combustion processing 27
4.3 Removal efficiency of other components (CO, CO2, NOx, O2, and PM) 28
4.4 Removal efficiency of PCDD/Fs 33
4.4.1. Removal efficiency of PCDD/Fs in particulate phase 34
4.4.2. Removal I-TEQ level of PCDD/Fs in particulate phase 43
4.4.3. Removal efficiency of PCDD/Fs gaseous phase 47
4.4.4. Removal I-TEQ level of PCDD/Fs in gaseous phase 54
4.5 Particulate and gaseous phase of PCDD/Fs 56
Chapter 5 Conclusions and Suggestions 59
5.1 Conclusions 59
5.2 Suggestions 60
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