| 制药行业DMF废水处理新工艺 |
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| 引用本文： | 方静,李春利,宋博.制药行业DMF废水处理新工艺[J].环境工程,2009,27(4). |
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| 作者姓名： | 方静 李春利 宋博 |
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| 作者单位： | 河北工业大学化工学院,天津,300130 |
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| 基金项目： | 河北省自然基金项目(B2006000018) |
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| 摘 要： | 针对目前国内处理制药过程中低浓度DMF含盐废水收率低、分离效果差、能耗高等问题,提出一种萃取结合精馏的新工艺。通过单因素对比实验,确定了适宜的萃取操作条件:萃取剂为氯仿,温度为20℃,溶剂比为2。通过新工艺与原有的减压精馏工艺进行对比实验表明,新工艺将DMF产品的质量分数由98.87%提高到99.85%,产品收率提高了29%,而再沸器能耗降低44%。
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| 关 键 词： | N N-二甲基甲酰胺 氯仿 萃取 废水处理 |
A NEW PROCESS FOR TREATING DMF-CONTAINING WASTEWATER IN PHARMACY INDUSTRY |
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| Fang Jing,Li Chunli,Song Bo.A NEW PROCESS FOR TREATING DMF-CONTAINING WASTEWATER IN PHARMACY INDUSTRY[J].Environmental Engineering,2009,27(4). |
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| Authors: | Fang Jing Li Chunli Song Bo |
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| Institution: | School of Chemical Engineering;Hebei University of Technology;Tianjin 300130;China |
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| Abstract: | In order to overcome the high operation cost, low product purity and low yield of traditional separation procedure for saliniferous wastewater of low concentration of DMF in pharmacy industry, a novel separation process combining with extraction and distillation was proposed. The optimum conditions for the new procecess were obtained as follows. The extraction was carried out at 20℃ using chloroform as solvent and the ratio of solvent was 2. By application of new process, purity of DMF product can be raised to 99.85 % from 98.87 % and the yield of DMF can be increased by 29 % . Compared with traditional process, energy consumption can be decreased by 44 % . |
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| Keywords: | DMF chloroform extraction waste water treatment |
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