聚酯降膜增黏反应过程模拟
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陈世昌, 曹峻华, 陈文兴
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Process simulation of falling film liquid-state polymerization of polyester
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CHEN Shichang, CAO Junhua, CHEN Wenxing
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表1 PET五釜工艺模拟结果与工厂数据比较
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Tab.1 Comparison between model calculation and plant data of PET five kettle process
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| 反应釜类别 | 过程参数 | ES/% | τ/h | MWN/(g·mol-1) | [Ea]/(mmol·kg-1) | [Eg]/ (mmol·kg-1) | | 酯化Ⅰ釜 | 目标值 | 92.0 | 2.0 | 720~980 | — | — | | 模拟值 | 92.9 | 1.8 | 917 | 731 | 1 255 | | 酯化Ⅱ釜 | 目标值 | 96.0 | 2.0 | 1 000~1 200 | — | — | | 模拟值 | 95.0 | 1.9 | 1 203 | 520 | 1 062 | | 预缩Ⅰ釜 | 目标值 | 98.5 | 1.0~2.0 | 2 800~4 000 | — | — | | 模拟值 | 99.5 | 1.9 | 4 632 | 127 | 301 | | 预缩Ⅱ釜 | 目标值 | 99.4 | 1~1.5 | 10 000~12 000 | — | — | | 模拟值 | 99.7 | 0.9 | 10 890 | 55 | 127 | | 终缩聚釜 | 目标值 | 99.9 | 1~1.2 | 19 200~21 000 | 28~32 | — | | 模拟值 | 99.8 | 1.03 | 19 940 | 31 | 68 |
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