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題名 | Optimal Piecewise Constant Temperature Policies for Batchwise Thermally Initiated Bulk Polymerization of Styrene=批式熱起始塊狀苯乙烯聚合反應之最佳梯式溫度控制途徑 |
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作者 | 許克瀛; 陳壽安; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷期 | 17:5 1986.09[民75.09] |
頁次 | 頁315-321 |
分類號 | 460.02 |
關鍵詞 | 苯乙烯; 溫度控制; 聚合反應; |
語文 | 英文(English) |
中文摘要 | 利用Lagrangian乘數注,尋求以階梯是溫度操作苯乙烯熱起始塊狀聚合反應,以使總聚合時間為最短,且達到所預設的最初和最後單體轉化率,和最後平均分子量,這階梯式溫度操作策略,可以克服以連續式溫度控制於最後階段,反應溫度必須急遽增高的困難。利用一些數值計算例,來說明此操作方式的特性。 |
英文摘要 | A method to minimize the total reaction time by considering piecewise constant temperature profile in N unequal time intervals is developed by use of the method of Lagrangian multiplier for the thermally-initiated batchwise polymerization of styrene under the preset initial and final monomer conversions and final average molecular weight. The proposed piecewise temperature policy overcomes the difficulty in temperature control of sharp increasing in temperature at the later stage of polymerization in the optimal continuous temperature policy. Numerical calculations of some examples are presented for demostrating the characteristic of the proposed method. |
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