| 合成革生产废水中DMF的节能回收新工艺 |
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| 引用本文： | 赵舜华,宋锡瑾,张景铸,刘书庆,裴宁.合成革生产废水中DMF的节能回收新工艺[J].化工进展,2007,26(9):1347-1350. |
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| 作者姓名： | 赵舜华 宋锡瑾 张景铸 刘书庆 裴宁 |
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| 作者单位： | 浙江禾欣实业集团股份有限公司,浙江,嘉兴,314003;浙江大学化学工程与生物工程系,浙江,杭州,310027;烟台东洁环保机械工程有限公司,山东,烟台,264002 |
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| 基金项目： | 浙江省科技厅重大科技专项(2006C13072) |
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| 摘 要： | 提出了从聚氨酯合成革生产废水中回收N,N-二甲基甲酰胺的节能新工艺。该工艺充分利用现有的低压蒸汽为热媒,在现有双塔回收工艺的基础上进行改进,由一级减压浓缩、二级常压浓缩、减压精馏三塔组成,热能循环使用,比现有双塔回收装置综合能耗下降37.7%,废水可以达到零排放,所得DMF产品的纯度99%以上。该工艺运行稳定,每套装置年收益达496.19万元。
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| 关 键 词： | N N-二甲基甲酰胺 PU革 回收 节能 |
| 文章编号： | 1000-6613（2007）09-1347-04 |
| 收稿时间： | 2007-03-30 |
| 修稿时间： | 2007-06-05 |
Energy-saving recovery process of DMF from synthetic leather waster water |
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| ZHAO Shunhua,SONG Xijin,ZHANG Jingzhu,LIU Shuqin,PEI Ning.Energy-saving recovery process of DMF from synthetic leather waster water[J].Chemical Industry and Engineering Progress,2007,26(9):1347-1350. |
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| Authors: | ZHAO Shunhua SONG Xijin ZHANG Jingzhu LIU Shuqin PEI Ning |
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| Abstract: | A new three-column energy-saving technique to recover N,N-dimethylformamid(eDMF)from the polyurethane(PU)synthetic leather process was developed by rebuilding a two-column recovery system. This process was composed of three columns,including first-stage vacuum concentration, second-stage atmospheric concentration,and vacuum distillation. Because heat energy was reused,the energy-saving recovery equipment could reduce energy consumption by 37.7%,compared to the current two-column equipment. No waster water was discharged in the process,and the purity of DMF product was above 99%. The profit of each energy-saving unitt could reach 4 961 900 yuan each year . |
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| Keywords: | N N-dimethylformamide PU synthetic leather recovery energy-saving |
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