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Process for producing ethanol

Published online: Apr 30, 2008

Geographical region	USA
Subject	Ethanol Production
Issue date	Apr 1, 2008
Title	Process for producing ethanol
Patent Number	US7351559 B2
Patent Application Number	US2006019360 A1
Assignee	ZeaChem Inc, USA
Relevance	A method of production of ethanol and co-products from carbohydrates using a combination of fermentation and chemical conversion.
Type of claims	Grant
Overview	This patent produces a method of increased production of ethanol from carbohydrates. The method advantageously is eco-friendly with no production of carbon dioxide, uses wide biomass sources as substrate and produces high value byproducts including corn oil and animal feed. The method includes, A) converting a carbohydrate source using a homoacetic fermentation to acetic acid, acetate, or mixtures thereof by fermentation, B) recovering, acidifying (if necessary), and converting the acetic acid, acetate, or mixtures thereof to ethyl acetate and C) converting at least part of said ethyl acetate to ethanol using hydrogen obtained from said natural gas source.
Related patent documents	US Patent publications US20060188980 A1 - System and method for processing biomass (2006) US20060127999 A1 - Process for producing ethanol from corn dry milling (2006) US20060024801 A1 - Methods and systems for biomass conversion to carboxylic acids and alcohols (2006) US20050256337A1 - Recovery of organic acids (2005) US20040171136 A1 - Methods and systems for pretreatment and processing of biomass (2004) US20040168960 A1 - Methods and systems for pretreatment and processing of biomass (2004) US20030077771 A1 - Process for producing ethanol (2003) US7074603 - Process for producing ethanol from corn dry milling (2006) US6740508 - Fermentation-based products from corn and method (2004) US6703227 - Method for producing fermentation-based products from high oil corn (2004) US6509180 - Process for producing ethanol (2003) US6368819 - Microbial process for the preparation of acetic acid as well as solvent for its extraction from the fermentation broth (2002) US6043392 - Method for conversion of biomass to chemicals and fuels (2000) US5986133 - Recovery of fermentation salts from dilute aqueous solutions (1999) Foreign patent publications WO0053791 - Process for producing ethanol (2003)
Patent Document	Full Patent Document [external link]

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