Use of activated carbon for separation of ethanol from water
AssigneeUop LLC
InventorsSanti Kulprathipanja, Richard W. Neuzil
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Abstract
An adsorptive separation process for separating ethanol from a feed mixture comprising ethanol and water, which process comprises contacting the feed mixture with an adsorbent comprising activated carbon, selectively adsorbing substantially all of the ethanol to be separated to the substantial exclusion of the water and thereafter recovering high purity ethanol. A desorption step is used to desorb the adsorbed ethanol with the desorbent selected being capable of direct blending into motor fuel.
Claims7
A process for separating ethanol from a feed mixture comprising ethanol and water and for producing a motor fuel blend, which process comprises contacting said mixture at adsorption conditions with an adsorbent comprising activated carbon, selectively adsorbing said ethanol in said adsorbent to the substantial exclusion of water, contacting the adsorbent containing the adsorbed ethanol with a desorbent material comprising a high octane hydrocarbon boiling in the gasoline range to desorb said ethanol from the adsorbent, and removing from said adsorbent and recovering as said motor fuel blend the resultant mixture of ethanol and desorbent material.
Dependencies are inferred from the claim text.