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:
Mar. 01, 2011
Filed:
Aug. 03, 2007
Clayton V. Mcneff, Andover, MN (US);
Larry C. Mcneff, Anoka, MN (US);
Arlin E. Gyberg, Minneapolis, MN (US);
Bingwen Yan, Shoreview, MN (US);
Daniel Thomas Nowlan, Hugo, MN (US);
Brian Krohn, Cloquet, MN (US);
Clayton V. McNeff, Andover, MN (US);
Larry C. McNeff, Anoka, MN (US);
Arlin E. Gyberg, Minneapolis, MN (US);
Bingwen Yan, Shoreview, MN (US);
Daniel Thomas Nowlan, Hugo, MN (US);
Brian Krohn, Cloquet, MN (US);
McNeff Research Consultants, Inc., Anoka, MN (US);
Abstract
The present invention relates to methods and apparatus for producing alkyl esters from lipid feed stocks, such as plant oils and/or animal fats, and systems including the same. In an embodiment, the invention includes a process for producing alkyl esters including mixing a lipid feed stock with an alcohol to form a reaction mixture; and contacting the reaction mixture with a catalyst under supercritical conditions for the alcohol, the catalyst comprising an unmodified metal oxide selected from the group consisting of alumina, titania, zirconia, and hafnia, and removing residual free fatty acids from the reaction mixture. Other embodiments are included herein.