頁籤選單縮合
題名 | 製程放大研究與設計技術(2)--如何提高反應系統的選擇率與產品品質=Process Scale up and Design Technology (2)--How to Enhance the Selectivity and Quality of the Product |
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作者姓名(中文) | 林進聰; | 書刊名 | 觸媒與製程 |
卷期 | 6:4 1999.01[民88.01] |
頁次 | 頁74-86 |
專輯 | 觸媒專輯 |
分類號 | 460.02 |
關鍵詞 | 製程放大; |
語文 | 中文(Chinese) |
中文摘要 | 化學家能夠藉由改變觸媒特性來提高反應的選擇率,對於化學工程師而言,在製 程放大研究階段必須依反應路徑的不同,選擇適當的反應器型式,調整最適的製程參數與操 作條件,來提高反應的選擇率與產品品質,其主要策略為當進行主反應比副反應所需的活化 能高時,則採取高溫有利於提高主反應的選擇率;反之則採取低溫。當進行主反應比副反應 的反應速率式中濃度之次方大時,則設法提高其濃度;反之則降低其濃度。另外,當原料中 的不純物含有不反應的末端官能基時,可估算其含量多寡對要達到聚合物最終分子量的反應 影響。 |
英文摘要 | The chemist can enhance the selectivity of the complex reaction by improving the characteristics of the catalyst. For the chemical engineer, he must consider the proper type of the reactor with the optimum process parameter and operating condition depending on the different scheme of reaction for enhancing the selectivity of the reactions and the qualities of the product. We can increase the temperature when the activation energy of the desired reaction is higher than the undesired reaction; Otherwise, decrease the temperature. We must enhance the concentration of the reactant when the order of the reactant of the desired reaction in the rate equation is larger than the reactant order of the undesired reaction; Otherwise, reduce the concentration of the reactant. The impurities of the raw material containing the end group which can not be reacted may be estimated the effect of the quantity to the reaction obtaining the final molecular weight of the polymer. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。