渗透汽化法从丙酮-丁醇-乙醇中分离浓缩丁醇
Separation and concentration of butanol from acetone-butanol-ethanol mixed solution by pervaporation
查看参考文献10篇
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文摘
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发酵法生产丁醇的产物质量浓度很低,为了实现丁醇的高效分离浓缩,文中采用渗透汽化膜分离技术对模型发酵液(丙酮、丁醇、乙醇混合溶液,ABE)进行浓缩实验.结果表明:随着温度、真空度、错流速度、料液质量浓度的增大,丁醇通量上升;渗透汽化膜对丁醇选择性在温度50 ℃时最佳,并随真空度的减小而减小,随料液质量浓度的增大而降低.实验证明,渗透汽化法能实现丁醇的高效分离浓缩,并且利用串联阻力溶解扩散模型可较好地预测ABE溶液体系中各组分的传质和分离效果. |
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其他语种文摘
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Butanol was produced with a very low mass concentration of fermentation product by microbial fermentation. In order to separate and concentrate butanol efficiently, the concentration of butanol from a model solution containing acetone, butanol and ethanol (ABE) was studied by pervaporation. The results show that the butanol flux increases with the rise of temperature, permeate pressure, cross flow rate and butanol mass concentration; the selectivity of pervaporation for butanol is the highest at 50 ℃, and the decrease of permeate pressure and the increase of butanol mass concentration result in the reduction of selectivity. These experiments prove that the pervaporation technology can be used as an efficient method for separation and concentration of butanol from ABE solution, and the mass transfer and separation of different components in ABE system can be well described and predicted by using resistance-in-series model of solution-diffusion-desorption. |
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来源
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化学工程
,2010,38(2):43-46 【核心库】
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关键词
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渗透汽化
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丁醇
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ABE
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模型
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地址
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中国科学院,过程工程研究所, 生化工程国家重点实验室, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-9954 |
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学科
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化学工业 |
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基金
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国家973计划
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文献收藏号
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CSCD:3818421
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参考文献 共
10
共1页
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