Production of diesel fuel from biorenewable feedstocks
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United States of America Patent
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Aug 16, 2011
Grant Date -
Mar 26, 2009
app pub date -
Aug 18, 2008
filing date -
Sep 20, 2007
priority date (Note) -
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Abstract
A process has been developed for producing diesel boiling range fuel from renewable feedstocks such as plant oils and animal oils, fats, and greases. The process involves treating a renewable feedstock by hydrogenating and deoxygenating i.e. decarboxylating, decarbonylating, and/or hydrodeoxygenating to provide a hydrocarbon fraction useful as a diesel boiling range fuel or diesel boiling range fuel blending component. If desired, the hydrocarbon fraction can be isomerized to improve cold flow properties. A portion of the hydrogenated and deoxygenated feedstock is selectively separated and then recycled to the treatment zone to increase the hydrogen solubility of the reaction mixture.
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