本研究以活化方式處理燃煤底灰未燃碳，瞭解未燃碳成為活性碳的可行方法。自燃煤底灰中浮選獲得未燃碳，分別有實廠採集以及實驗室浮選採集等未燃碳樣品，進行基本性質分析，以及水蒸氣活化實驗，變化活化溫度850~1000℃、時間0~3.5hr、帶動氣體流量0~400ml/min等實驗條件，分析活化產物的比表面積、碳成分重量變化率、碘值、亞甲藍值等，由結果探討活化較佳處理條件、活化產物的脫色力等，說明未燃碳成為活性碳的可能性。
結果顯示，實廠以及經過實驗室浮選採集之樣品，均可提高碳含量各約65與75%，其餘成分是由石英、富鋁紅柱石與方矽石等所構成之灰分。在活化實驗結果方面，樣品在活化溫度850℃、時間約2.5hr、水蒸氣之帶動氣體流量100ml/min等條件下可獲得較佳結果，活化過程中碳成分重量變化率約15~38%，產物之比表面積約756~877m2/g、碘值約1088~1369mg/g、亞甲藍值約92~121ml/g等，產品性能已相當於市售工業用活性碳。未燃碳經過活化處理成為活性碳之可行性高，建議可建立處理廠實際從事再利用。

This study purposes of the activation of unburned carbon from coal bottom ash for making active carbon. Samples of unburned carbon were obtained from coal bottom ash at a factory which deals with coal bottom ash and at our laboratory. Samples’ fundamental properties were analyzed initially, and a series of activation experiments were proceeded on them at temperatures of 850~1000℃, at durations of 0~3.5hr, and with flow rates of carrier gas of 0~400ml/min. The residual weight percentage of carbon was acquired, and the properties of activated products were examined such as specific surface area, idion value, menthlene blue number and etc. By results, a superior operating condition of activation was concluded and a utility estimation of unburned carbon was discussed.
The result showed that samples from factory and laboratory were carbon grades 65 and 75% in turns. Besides carbon compound, there were ash compounds of quartz , mullite and cristobalite, etc. In according to activation experiment, a superior condition was at 850℃, 2.5hr, and flow rates of carrier gas of 100ml/min, and the products’ residual weight percentage of carbon were about 15~38%, it’s specific surface area was at a range of 756~877 m2/g, iodine value was 1088~1369mg/g, methylene blue number was 92~121ml/g. It concluded that the activation of unburned carbon as active carbon was doable.

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