Method of separating and recovering components of mixtures via pervaporization
AssigneeGKSS-Forschungszentrum Geesthacht GmbH
InventorsAxel Wenzlaff, Dieter Behling, Karl W. Boddeker
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Abstract
A method of separating and recovering components of a mixture having a gap in the range of miscibility and having organic compounds and water in a pervaporization process with the aid of membranes. The mixture is first separated into an organically loaded water phase and a water-saturated organic phase. Subsequently, the organically loaded water phase and the water-saturated organic phase are separately subjected to parallel, different pervaporization processes, resulting in retentates as water on the one hand and organic liquid on the other hand. The permeates that result during the pervaporization processes are subsequently returned to the mixture that is to be separated.
Claims16
A method of separating and recovering components of a mixture of organic compounds and water in a pervaporization process with the aid of membranes, said method in operating sequence including the steps of:
- first separating said mixture into an organically loaded water phase I and a water-saturated organic phase II;
- subsequently separately subjecting said water phase I and said organic phase II to parallel, different pervaporization processes, whereby permeates result, and whereby from said water phase I also a retentate as water III is generated and from said organic phase II also a retentate as organic liquid IV is generated;
- condensing said permeates and combining said permeates, wherein the order in which said steps of condensing and combining are performed can be selected as desired;
- and
- subsequently returning said permeates to said mixture that is to be separated.
Dependencies are inferred from the claim text.