臺灣博碩士論文加值系統

在台灣由於塑膠製品價格低廉，為社會大眾廣泛地使用的結果，故產生了
相當可觀的廢棄量。而由於塑膠本身的製造過程經常會以重金屬或是其化
合物作為各種塑膠添加劑的來源，若是塑膠廢棄物以焚化方式處理，則其
中的重金屬勢必散佈於底灰和飛灰中，如果未將這些灰分妥善地處理，就
會對環境造成嚴重的危害。欲減輕重金屬對環境的迫害，首先要瞭解重金
屬在焚化過程的流向、行為特性及操作因子對其分佈的影響。本研究即針
對以焚化方式處理塑膠廢棄物時，藉由控制、改變燃燒溫度及燃燒時所供
給的進流氣體比例來觀察重金屬鉛、鎘於底灰和飛灰之散佈情形與操作因
子對重金屬分佈的影響。研究的結果顯示當操作溫度上升時，金屬鉛在飛
灰中的比例亦隨之增加；金屬鎘在高溫操作時和金屬鉛的情形類似，但在
較低溫燃燒時則因涉及氧氣濃度的影響而使分佈趨勢較為複雜。在含有高
濃度氧氣的環境下，金屬鉛的揮發率會被抑制；金屬鎘則是在較高溫的操
作條件下，高濃度氧氣才會有降低鎘揮發率的效果。

In Taiwan，because the prices of plastics is inexpensive，and
people use the plastics widespread，so there have a large of
discard. The process of making plastics to use the metal for
the additives of plastics.The metal must scatter in bottom ash
and fly ash if we use the incineration technology to treatment
Wastesastes，and there will produce dangerously for environment
if we do not have to treatment these ashes. If we would be to
mitigate the harm of the metals for environment，the first，it
have to understand that the behavior of metals，the effect of
operational factor when the waste was incinerated.The paper was
to study the effect of temperature and the ratio of gases （N2
and O2） to metal distributions when e use the incineration
technology to treat the plastics. The results indicated that （1
）When operational temperature was uperaise，the ratio in fly
ash of Lead was upraise，and when we used high temperature to
incinerate the plastics，the temperature was uperaise，the
ratio in fly ash of Cadmium was upraise.（2）When we used high
concentration of oxygen to incinerate the plastics，the Percent
volatilization of Lead would be restrained，and in high
temperature，the Cadmium will have the similar condition.