- 學位論文
利用熱處理資源化碳質材料衍生之類戴奧辛化合物研究
Research of Carbonaceous Recycling Material by Thermal Treatment on Dioxin-like Compounds
摘要
經熱裂解廢輪胎所回收之裂解碳黑，目前將其做為活性碳乃技術可行及最符合經濟效益，但其碳材之吸附特性與加工成活性碳期間之熱處理，亦可能造成類戴奧辛化合物吸附或衍生。本研究主要探討不同熱處理溫度及反應時間對類戴奧辛化合物之影響。以實驗室熱處理反應系統進行實驗，實驗參數設定為模擬裂解碳黑熱處理成活性碳之環境，500℃、700℃及反應時間1小時、2小時。結果表明未經熱處理之裂解碳黑，PCDD/Fs濃度96.2 pg/g、PCBs濃度86.9 pg/g，顯示即含有少量類戴奧辛化合物。而將裂解碳黑經上述條件熱處理後，氣相PCDD/Fs濃度介於0.92 ng/m3~11.64 ng/m3、PCBs濃度介於0.14 ng/m3~6.41 ng/m3；殘餘相PCDD/Fs濃度介於182.1 pg/g~10499.2 pg/g、PCBs濃度介於21.0 pg/g~342.6 pg/g。結果顯示，溫度上升及反應時間增加皆會造成類戴奧辛化合物的衍生，進行這類之熱加工程序，應慎重評估熱裂解操作條件。
並列摘要
Thermal black of waste tire pyrolysis are recovered,which is currently used as active carbon is technically feasible and most cost-effective.But the adsorption properties of the carbonaceous material is processed into activated carbon during the thermal treatment,it may also cause Dioxin-like compounds adsorption or derivative.The study focused on the effects of different thermal treatment temperature and reaction time on the Dionxin-like compounds.Using thermal treatment in the laboratory experiment parameter to simulate environment of the thermal carbon into the activated carbon,500℃, 700℃ and reaction time of 1 hour, 2 hours.The results show that thermal black without the thermal treatment,PCDD/Fs concentration of 96.2 pg/g,PCBs concentration of 86.9 pg/g,containing a few of Dioxin-like compounds.And the thermal black after thermal treatment of the above conditions, PCDD/Fs concentrations of gas phase between 0.92 and 11.64 ng/m3,PCBs concentrations between 0.14 ng/m3 and 6.41 ng/m3.PCDD/Fs concentration of residual phase between 182.1 and 10499.2 pg/g,concentrations of PCBs between 21.0 and 342.6 pg/g.The results show that increasing the temperature and reaction time can cause Dioxin-like compounds are derivative,should carefully assess the thermal cracking of operatiog conditions.