Patent ID: 7776218
Filing Date: 2010-08-17
Classification: B01D,C12C,F26B

Abstract:
1. A process for drying solids initially wet with water, the process comprising: (a) contacting a feed stream from a fermentation process with a first solvent and a second solvent, the feed stream comprising solids having interstitial spaces therebetween and water present in the interstitial spaces and water absorbed by the solids, the first solvent having a heat of vaporization lower than the heat of vaporization of water and being soluble with water, and the second solvent having a heat of vaporization lower than the heat of vaporization of the first solvent and being miscible with the first solvent; (b) displacing the water present in the interstitial spaces with the first solvent to provide solids having the first solvent in the interstitial spaces; and (c) displacing the first solvent present in the interstitial spaces with the second solvent to provide solids having the second solvent in the interstitial spaces.