EPA-104-X12

104

1,500 千元

2015/01/01

2015/11/30

江康鈺

回收基管會

顏素真

國立中央大學

科技計畫

鋁箔包；非回收塑膠；鋁箔塑膠袋；氣化技術

Tetrapak aseptic, non-recycled plastic, plastic bag containing aluminum, gasification

江康鈺

03-4227151#34688

kychiang@ncu.edu.tw

本研究利用不同處理量之向上流式固定床及氣泡式流體化床系統，探討鋁箔包及鋁箔塑膠袋於氣化反應系統連續操作下，氣體產能效率及鋁回收之評估。根據氣化合成氣之產能效率分析結果，提高氣化溫度均有助於產氣熱值之提昇，以0.12 kg/hr 之流體化床為例，當氣化溫度為900℃，鋁箔包及鋁箔塑膠袋之氣化產氣最大熱值分別達5.52 MJ/Nm3 及5.87 MJ/Nm3。當處理量規模增加至6kg/hr 之流體化床系統，其鋁箔包氣化產氣之平均熱值，亦達3.66 MJ/Nm3。根據冷燃氣效率(cold gas efficiency)分析結果可知，鋁箔包及鋁箔塑膠袋氣化後之冷燃氣效率，分別可達24.7%及36.0%。根據鋁回收量及純度分析結果顯示，處理每公噸鋁箔包及鋁箔塑膠袋，平均約有52 公斤及98 公斤之回收鋁，而回收鋁之純度，則分別介於76%~94%及76%~91%。另根據碳足跡之分析結果，處理每公噸鋁箔包/鋁箔塑膠袋約排放99 公斤之二氧化碳，其中以前處理程序之碳排放量最大，約占總排放量之30%。若以日處理量24 公噸之氣化系統處理鋁箔包或鋁箔塑膠袋，將其氣化產氣轉為電能後，每日約可產生6,720 kWhe 之發電量。整體而言，本研究應用之氣化處理技術，已具有轉換鋁箔包或鋁箔塑膠袋為能源(合成氣)及資源(鋁)之發展潛力。

鋁箔包；非回收塑膠；鋁箔塑膠袋；氣化技術

詳細版成果報告.pdf

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2016/2/1 上午 12:00:00

This study investigated the energy efficiency of syngas and aluminum recovery in gasification of tetrapak aseptic and non-recycled plastic containing aluminum by the updraft fixed-bed and bubbling fluidized bed (BFB) gasifiers. The continuous operation of the gasifiers with the different treatment capacity was also discussed. According to the results on energy yield efficiency and syngas heating value, increased gasification temperature can enhance the energy yield and syngas heating value. In the case of 900℃ and fluidized-bed gaifier (0.12 kg/hr), the maximum syngas heating value were 5.52 MJ/Nm3 and 5.87 MJ/Nm3 in gasification of the tetrapak aseptic and non-recycled plastic containing aluminum, respectively. As treatment capacity scaled up to 6 kg/hr, the average syngas heating value was approximately 3.66 MJ/Nm3. Based on the analysis results of cold gas efficiency(CGE), the maximum CGE gasified from tetrapak aseptic and non-recycled plastic containing aluminum were 24.7% and 36.0%, respectively. On the other hand, it can produce approximately 52 kg and 98 kg recovered aluminum by gasified per ton of tetrapak aseptic and non-recycled plastic containing aluminum, respectively. Meanwhile, the purities of recovered aluminum gasified from tetrapak aseptic and non-recycled plastic containing aluminum were 76%~94% and 76%~91%, respectively. According to the inventory and analysis results of carbon footprint by life cycle analysis(LCA), the estimated carbon dioxide emission is approximately 99 kg CO2e by gasified per ton of tetrapak aseptic and non-recycled plastic containing aluminum. Especially for the tested materials were shredded during pretreatment process, it required more energy input resulting in more carbon dioxide emissions. It was approximately 30% of total amount of carbon dioxide emissions. Based on the results of energy yield and syngas heating value, if the fluidized bed gasifier is a capable of 24 ton/day, it could produce the electricity of 6,720 kWhe. In summary, it can conclude that the gasification technology is a good potential for converting tetrapak aseptic and non-recycled plastic containing aluminum into energy (syngas) and resource (aluminum).

Tetrapak aseptic, non-recycled plastic, plastic bag containing aluminum, gasification