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題 名 | Resources Recovery of Waste Rayon by Pyrolysis: Kinetics Study=Rayon熱裂解資源回收--動力學研究 |
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作 者 | 黃宏章; 張慶源; 陳奕宏; 謝哲隆; 林致平; 吳照雄; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 35:6 2004.11[民93.11] |
頁 次 | 頁623-632 |
分類號 | 460.02 |
關鍵詞 | 熱裂解; 資源回收; 動力學; Rayon; Pyrolysis; Resources recovery; Kinetics; Char formation; |
語 文 | 英文(English) |
中文摘要 | Rayon是由天然生質纖維所衍生而廣泛使用於商業、工業和工程生產,特別是衣服生產。由纖維工業及消費者所產生的rayon在廢棄物中佔有很大的部份。將rayon轉化為有用的物質,如低分子量有機物、碳纖維或活性碳,不只可以解決廢棄物處理問題,更可以增加資源的再利用。在考量熱處理再利用rayon之前,必須先研究其熱處理時的反應動力行為。本研究利用熱重分析儀進行rayon熱裂解研究。Rayon在反應溫度378-800K升溫速率5、12、20K/min下,其熱裂解反應動力式可以以二競爭(並聯)反應型反應動力模式來表示其揮發物及焦炭的產生行為。其熱裂解之反應動力模式參數可分別表示為:活化能E,171.6和191.8 kJ/mol;反應級數n,1和1.5;及頻率因子A,4.3×1011和5.6×1012s-1。這些資訊可以提供作為rayon熱裂解系統設計時之參考。 |
英文摘要 | Rayon derived from natural biomass fibers are extensively used in the production of a wide range of commercial, industrial, and engineering products, especially rayon clothes. The rayon discharged by textile industry, and consumers are becoming a large proportion of wastes. The conversion of rayon to various useful materials such as lower molecular weight organic compounds (liquid fuels and combustible gas) and carbonaceous fibers or activated carbons via pyrolysis not only solves the disposal problem but also matches he wastes minimization and resource utilization. Before considering the thermal treatment of utilization of rayon clothes, one should investigate the behavior of rayon alone during the thermal treatment. The pyrolysis of rayon is thus examined with a thermal gravimetric analyzer (TGA). The kinetics of the thermal pyrolysis of rayon is conducted using nitrogen as the carrier gas in 378-800K and at various constant heating rates (β) of 5, 12, and 20K/min. the results indicate that the entire pyrolysis process of rayon under the experimental conditions of this investigation can be described by two competitive reactions forming volatiles and residues (including carbon). The corresponding activation energies (E), reaction orders (m) and frequency factors (A) of volatiles and char formed by the two competitive (parallel) reactions of pyrolysis of rayon are 171.6 and 191.8 kJ/mol of E, 1 and 1.5of n, and 4.3×1011 and 5.6×1012s-1 of A, respectively. All this information is useful to the proper design of a pyrolysis system of rayon. |
本系統中英文摘要資訊取自各篇刊載內容。