Suppression of Osmotic Distillation in Gas Membrane Processes
Suppression of Osmotic Distillation in Gas Membrane Processes
复制标题
气体膜过程中渗透蒸馏的抑制
DOI：
10.1080/01496390802282081
复制
发表时间：
2008
影响因子：
2.8
通讯作者：
S. Wickramasinghe
中科院分区：
文献类型：
--
作者：
Z. Shen;L. Zhang;Subrata Mondal;S. Wickramasinghe
摘要抑制水的渗透蒸馏对于气体膜的工业化应用具有重要意义。我们已经通过增加具有较低水蒸气压力的流的温度来平衡膜两侧的水蒸气压力。实验确定的温度梯度比从水蒸气压力-温度数据预测的大许多倍。较大的温度梯度可以通过考虑穿过膜的热通量来解释。调节进料流和汽提流的温度以抑制水蒸气输送的经济可行性取决于所涉及的额外能量成本。
Abstract Suppression of osmotic distillation of water is important for the commercial scale application of gas membranes. We have equalized the water vapor pressure on either side of the membrane by increasing the temperature of the stream with the lower water vapor pressure. The experimentally determined temperature gradient is many times larger than predicted from water vapor pressure–temperature data. The larger temperature gradient may be explained by considering the heat flux across the membrane. The economic viability of adjusting the temperature of the feed and strip streams to suppresses water vapor transport depends on the additional energy costs involved.