| 2，3-二氯-5-三氟甲基吡啶精馏过程的研究 |
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| 引用本文： | 贾鹏飞,唐恒丹,王吉红,曾爱武.2，3-二氯-5-三氟甲基吡啶精馏过程的研究[J].天津化工,2013,27(1):13-15. |
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| 作者姓名： | 贾鹏飞 唐恒丹 王吉红 曾爱武 |
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| 作者单位： | 1. 天津天大天久科技股份有限公司,天津,300072
2. 化学工程联合国家重点实验室,天津,300072 |
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| 摘 要： | 采用高效θ环填料塔，通过真空精馏的方法精制提纯2，3-二氯-5-三氟甲基吡啶粗品，产品纯度达到99％以上，瞬时纯度可以达到99．3％，最高收率在75％v2上。通过对该产品的间歇蒸馏过程的研究，得到了适宜的操作条件：压力P=10kPa-30kPa，回流比R=10-30。试验证实采用变操作参数的分批精馏操作有利于提高产品的质量和收率。
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| 关 键 词： | 2 3-二氯-5-三氟甲基吡啶 2-氯-5-三氟甲基吡啶 精馏 |
Optimization of distillation operation parameters of high purity 2,3-dichloro-5-trifluoromethylpyridine |
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| JIA Peng-fei
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TANG Heng-dan
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WANG Ji-hong
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ZENG Ai-wu.Optimization of distillation operation parameters of high purity 2,3-dichloro-5-trifluoromethylpyridine[J].Tianjin Chemical Industry,2013,27(1):13-15. |
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| Authors: | JIA Peng-fei TANG Heng-dan WANG Ji-hong ZENG Ai-wu |
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| Affiliation: | 1.Tianjin Univtech Co.Ltd.,Tianjin 300072,China;2.State Key Laboratory of Chemical Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | 2,3-Dichloro-5-trifluoromethylpyridine is rectified by vacuum distillation with hxgh ettlclent pacKea tower with θ filler,the product purity is over 99% ,99.3% at instant,the yield is over 75% .Through the study of multivariable batch distillation process, the optimized operation parameters were obtained, the pressure is 10kPa- 30kPa,the reflux ratio is 4-1 2,The experimentation indicated that muhivariable batch distillation process could improve the yield. |
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| Keywords: | 2 3-dichloro-5-trifluoromethylpyridine 2-chloro-5-trifluoromethylpyridine distillation |
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