Alcohol recovery by continuous fermentation
Patent 5036005 Issued on July 30, 1991. Estimated Expiration Date: 
January 17, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 17, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for producing absolute alcohol by solvent extraction and vacuum distillation Extraction and/or extractive distillation of ethanol from aqueous solutions Dehydration of alcohol with extractive distillation Dehydration of ethanol by extractive distillation Patent #: 4631115 InventorAssigneeApplicationNo. 298216 filed on 01/17/1989US Classes:435/161, Ethanol435/155, Containing hydroxy group435/157, Acyclic435/160, Butanol435/162, Multiple stages of fermentation; multiple types of micro-organisms or reuse of micro-organisms435/813CONTINUOUS FERMENTATIONExaminersPrimary: Schwartz, Richard A.Assistant: Mosher, Mary E. Attorney, Agent or FirmInternational ClassesC12P 007/06C12P 007/14 C12P 007/04 C12P 007/16 AbstractFuel grade ethanol is produced in continuous process employing fermentation, solvent extraction of the ethanol, extractive distillation of the ethanol-solvent extract to provide water fraction and vacuum stripping for separation of the fuel-grade ethanol and regenerated solvent.The solvent is recycled. An isoparaffin is used as a solvent and this solvent can be modified with a long chain fatty acid, alcohol or fatty alcohol or long-chain esters. Alternatively, many modifiers may be used neat.Other References
|
| ||||||||||||||
