• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Separation of azeotropic mixtures of alcohols and water with FricDiff
【24h】

Separation of azeotropic mixtures of alcohols and water with FricDiff

机译：FricDiff分离酒精和水的共沸混合物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

FricDiff is an energy efficient separation process based on a difference in transport velocities of the components of a gas or vapor mixture when they diffuse through a sweep gas ('enhancer'). The separation process takes place inside the pores of a non-selective macro-porous barrier. In this paper the separation of a 2-propanol-water mixture with the FricDiff-principle is studied, using CO2 as the enhancer. A detailed numerical model is developed that describes the separation process that takes place inside a cylindrical FricDiff-unit. In this unit the vapor mixture to be separated and the sweep gas flow at opposite sides of a porous barrier in a counter current mode. Through the porous barrier selective mass transport of components of the feed mixture through the sweep gas takes place resulting in a separation. The model takes into account axial velocity profiles as a result of laminar flow of the gas and vapor mixtures through the flow channels, radial concentration gradients and radial velocities. The transport through the porous barrier is described with the Binary Friction Model. The influences of process conditions and the characteristics of the porous barrier on the separation process are studied.
机译：FricDiff是一种节能分离方法，它基于气体或蒸汽混合物中的组分通过吹扫气体（“增强剂”）扩散时的输送速度差异。分离过程发生在非选择性大孔屏障的孔内。本文研究了使用FricDiff原理分离2-丙醇-水混合物，并以CO2为促进剂。开发了详细的数值模型，描述了在圆柱FricDiff单元内部发生的分离过程。在该单元中，待分离的蒸汽混合物和吹扫气体以逆流模式在多孔屏障的相对侧流动。通过多孔屏障，进料混合物的组分通过扫气选择性地进行质量转移，从而导致分离。该模型考虑了气体和蒸汽混合物通过流动通道的层流，轴向浓度梯度和径向速度所导致的轴向速度分布。通过二元摩擦模型描述了通过多孔屏障的传输。研究了工艺条件和多孔阻挡层特性对分离过程的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号