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研究生:張華珊
研究生(外文):Chang, Hua-Shan
論文名稱:鋁箔包在氮氣中熱裂解之動力學與產物研究
論文名稱(外文):Pyrolysis Kinetics and Products of Tetra Packs in Nitrogen
指導教授:張慶源張慶源引用關係吳照雄---
指導教授(外文):Chang Ching-YuanWu Chao-Hsiung
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:環境工程學研究所
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:1998
畢業學年度:86
語文別:中文
論文頁數:131
中文關鍵詞:鋁箔包熱裂解牛皮紙動力學
外文關鍵詞:tetra packpyrolysiskraft paperkinetics
相關次數:
  • 被引用被引用:3
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本研究為探討鋁箔包在氮氣中熱裂解之動力分析與產物分析。將鋁箔包及
其主要成份牛皮紙、低密度聚乙烯,分別以5.2、12.8、21.8 K/min三種
加熱速率在氮氣中進行熱裂解實驗,以建立鋁箔包熱裂解之反應動力模式
。在5.2 K/min之加熱速率下收集鋁箔包熱裂解後之固體殘餘物與產氣進
行分析,並配合反應動力模式探討鋁箔包熱裂解之反應機制。
結果顯示鋁箔包熱裂解重量消失變化主要分為三階段。第一階段為牛皮紙
初級反應所造成,第二階段為低密度聚乙烯熱裂解反應與牛皮紙次級反應
共同影響,第三階段為牛皮紙次級反應繼續影響。其主要成份單獨熱裂解
時,低密度聚乙烯熱裂解反應可以一反應模式闡述 ; 而牛皮紙熱裂解反
應可以二反應模式闡述,此二反應為並行反應,總反應速率方程式可依其
個別熱裂解行為之權重因子加成而得。鋁箔包熱裂解時可假設鋁箔不參與
反應,總反應速率式由低密度聚乙烯與牛皮紙之個別反應速率式,依組成
之重量比例加權計算。將實驗中牛皮紙樣品之一與低密度聚乙烯計算之結

在產物分析方面,最終固體殘餘物中鋁箔以X光粉末繞射儀鑑定結果,所
含鋁箔仍為純鋁,增加了回收之價值。氣體產物以CO2與HCx為主,其中
HCx多為低碳數(C1~5)之烷類與烯類,為熱值較高之氣體。CO2產生之最
大濃度對應溫度區間為575~700 K,此為鋁箔包中牛皮紙初級反應所致 ;
HCx產生較多量時所對應之溫度約在750 K,此時為鋁箔包中低密度聚乙烯
熱裂解反應之階段。
The object of this research is to investigate the pyrolysis
kinetics and products of tetra packs in nitrogen. The tetra
packs, kraft papers and LDPE ( low-density polyethylene ), the
main components of tetra pack, were pyrolyzed in nitrogen at
the heating rates of 5.2, 12.8, 21.8 K/min, and the pyrolysis
kinetic model of tetra packs was built up. For the product
analysis, tetra packs were pyrolyzed at the heating rate of 5.2
K/min, and the solid residues and gaseous products were
collected and analyzed.
The results indicate that the variation of residual mass
fraction of tetra pack pyrolysis consisted of three distinct
stages. The first stage was contributed by the primary reaction
of kraft paper. Pyrolysis reaction of LDPE and the secondary
reaction of kraft paper were significant in the second stage.
The third stage was only contributed by the secondary reaction
of kraft paper. The one-reaction model and two-reaction model
could describe the pyrolysis behavior of LDPE and kraft paper,
respectively. T
In the part of product analysis, the aluminum foil in the
final residues was analyzed by XRPD ( X-ray powdered
diffraction ), and the results indicate that the aluminum foil
in the final residues was pure aluminum. The results evaluate
the recovery value of aluminum foil. The main gaseous products
were CO2 and HCx, and the HCx consisted of low molecular
paraffin and olefin ( C1~5 ), which were higher heating value
gases. The temperature range corresponding to the maximum CO2
concentration was during 575
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