Discontinuous regime membrane separation process
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United States of America Patent
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Apr 18, 2017
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app pub date -
Nov 20, 2012
filing date -
Nov 21, 2011
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Abstract
A process for separating a gaseous or liquid mixture by means of a separating device including a first volume and a second volume which are separated by a membrane which has selective permeability with respect to at least two components of the mixture, comprising the following steps:
- a) fill up the first volume of the device with the mixture to be separated;b) wait for a period of time which is in excess of the permeation lag time, but is insufficient to reach a state of equilibrium, during which time a fraction of each component of the mixture passes from the first to the second volume of the device through the membrane; andc) evacuate the first and the second volume of the device, as a result of which at least one first and one second cut of the mixture is obtained, having different molar compositions.
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