Pervaporation process of separating a liquid mixture
AssigneeKernforschungszentrum Karlsruhe GmbH
InventorsJurgen Kaschemekat, Frank Schutt, Axel Wenzlaff
Life of this patent
Estimating the term…
Abstract
A pervaporation process for separating at least one component from a mixture of liquids, for example for separating ethanol from a fermentation mass, by a series of three separation steps: separating the mixture by a first pervaporation to form a first permeate vapor enriched in the component to be separated; fractionating the first permeate vapor, for example by temperature condensation, to form a high concentration fraction twice enriched in the component to be separated; and either distilling the high concentration fraction or a second pervaporation to form a distillate or retentate liquid thrice enriched in the component to be separated.
Claims17
A pervaporation membrane process for separating at least one component from a mixture of liquids, comprising:
- separating a mixture of liquids by a first pervaporation membrane to form a first permeate vapor once enriched in at least one component to be separated, and a first retentate liquid deriched in said at least one component to be separated;
- fractionating said first permeate vapor to form a high concentration fraction twice enriched in said at least one component to be separated, and a low concentration fraction deriched in said at lest one component to be separated;
- separating said high concentration fraction by a second pervaporation membrane to form a second permeate vapor deriched in said at least one component to be separated, and a second retentate liquid thrice enriched in said at least one component to be separated;
- and
- recovering said at least one component to be separated from said second retentate liquid.
A pervaporation membrane process for separating at least one component from a mixture of liquids, consisting essentially of:
- separating a mixture of liquids by a first pervaporation membrane to form a first permeate vapor once enriched in at least one component to be separated, and a first retentate liquid deriched in said at least one component to be separated;
- fractionating said first permeate vapor to form a high concentration fraction twice enriched in said at least one component to be separated, and a low concentration fraction deriched in said at least one component to be separated;
- separating said high concentration fraction by a second pervaporation membrane to form a second permeate vapor deriched in said at least one component to be separated, and a second retentate liquid thrice enriched in said at least one component to be separated;
- and
- recovering said at least one component to be separated from said second retentate liquid.
Dependencies are inferred from the claim text.