The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2002
Filed:
Apr. 12, 2000
Gene E Lightner, Federal Way, WA (US);
Other;
Abstract
A method to separate ethanol from a solution containing sulfuric acid and ethanol which employs a vessel in which ethanol is humidified from a gas. By adding a gas to a solution containing sulfuric acid and ethanol in the vessel a gas is utilized to form humidified ethanol. Heat is provided to the solution to replace heat of vaporization of the humidified ethanol to maintain a substantially constant thermal equilibrium condition within the vessel to compensate for the energy of ethanol evaporation. The gas humidified with ethanol is then parted from the vessel to remove ethanol from the solution. The sulfuric acid, substantially devoid of ethanol, is likewise removed from the vessel. The ethanol humidified gas is thereupon separated from the ethanol to provide ethanol and a gas containing ethanol. The gas, containing ethanol, is retrieved for recycle to humidify additional ethanol