Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2008-04-04
2010-12-07
Caldarola, Glenn A (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
C208S058000, C208S060000, C208S067000, C208S069000, C208S070000, C585S733000, C585S750000, C044S605000
Reexamination Certificate
active
07846323
ABSTRACT:
The present invention generally relates to a method for producing an isoparaffinic product useful as jet fuel from a renewable feedstock. The method may also include co-producing a jet fuel and a liquefied petroleum gas (LPG) fraction from a renewable feedstock. The method includes hydrotreating the renewable feedstock to produce a hydrotreating unit heavy fraction that includes n-paraffins and hydroisomerizing the hydrotreating unit heavy fraction to produce a hydroizomerizing unit heavy fraction that includes isoparaffins. The method also includes recycling the hydroisomerizing unit heavy fraction through the hydroisomerization unit to produce an isoparaffinic product that may be fractionated into a jet fuel and an LPG fraction. The present invention also relates to a jet fuel produced from a renewable feedstock having improved cold flow properties.
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Abhari Ramin
Havlik Peter
Jannasch Nathan
Tomlinson Lynn
Caldarola Glenn A
Hall Estill Hardwick Gable Golden & Nelson, P.C.
McCaig Brian
Syntroleum Corporation
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