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Production of higher quality bio-oils by in-line esterification of pyrolysis vapor

United States Patent

December 2, 2014
View the Complete Patent at the US Patent & Trademark Office
The disclosure encompasses in-line reactive condensation processes via vapor phase esterification of bio-oil to decease reactive species concentration and water content in the oily phase of a two-phase oil, thereby increasing storage stability and heating value. Esterification of the bio-oil vapor occurs via the vapor phase contact and subsequent reaction of organic acids with ethanol during condensation results in the production of water and esters. The pyrolysis oil product can have an increased ester content and an increased stability when compared to a condensed pyrolysis oil product not treated with an atomized alcohol.
Hilten; Roger Norris (Winterville, GA), Das; Keshav (Athens, GA), Kastner; James R. (Athens, GA), Bibens; Brian P. (Houston, TX)
University of Georgia Research Foundation, Inc. (Athens, GA)
13/ 139,383
February 22, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Grant No. DE-FG36-05GO85012 awarded by the Department of Energy of the United States government. The government has certain rights in the invention.