Pervaporation and vapour permeation are established processes that are used in various industrial applications to process organic solvents. A .. Read more pervaporation process is one where the membrane is contacted with a liquid phase. However, a vapour permeation process is one where the membrane is contacted with a vapour phase (for example, where the feed comes from an evaporator or a rectification column). Pervaporation and vapour permeation can be applied to the dehydration of organic solvents or splitting azeotropes. Other applications include methanol removal from organic mixtures or the separation of valuable volatile components (e.g. Pervaporation and vapour permeation processes often lead to lower operating costs and a much more elegant and simpler process, even for existing plants. Pervaporation and vapour permeation processes are not pressure driven membrane processes.
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