Two Cycle Process For Producing Fuel-grade Ethanol From Dilute Aqueous Mixtures
Tedder, Daniel W.
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The beer is fed to a first solvent extraction column together with an organic solvent for alcohol which solvent is immiscible in water. The alcohol-organic solvent phase is extracted a second time, vacuum distilled or stripped, dried and again vacuum stripped or distilled to produce fuel grade alcohol.
- Georgia Tech Patents