US 7,846,323 B2 · Process for co-producing jet fuel and LPG from renewable sources

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.

Claims9

Dependent claims

A method for producing from a renewable feedstock an isoparaffinic product useful as jet fuel, the method comprising:

a. hydrotreating a renewable feedstock comprised of triglycerides, free fatty acids, and combinations thereof with a C3-C18 isoparaffinic diluent from step b) to produce a n-paraffinic fraction;
b. hydroisomerizing n-paraffinic fraction to produce an isoparaffinic fraction and a heavy fraction;
c. separating the heavy fraction from the isoparaffinic fraction;
and,
d. recycling the heavy fraction of step (c) to the hydroisomerizing step of step (b).

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/062,970Filed 4 Apr 2008 · us provisional application

Priority

6 Apr 2007

Published

US 2008/0244962 A19 Oct 2008

Granted

7 Dec 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

C10G 3/46
Containing iron group metals or compounds thereof: in combination with chromium, molybdenum, tungsten metals or compounds thereof
C10G 3/50
Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids: in the presence of hydrogen,…
C10L 1/04
Liquid carbonaceous fuels: essentially based on blends of hydrocarbons
C10L 3/12
Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas: liquefied…

Process for co-producing jet fuel and LPG from renewable sources

Life of this patent

Process for co-producing jet fuel and LPG from renewable sources

Life of this patent

Abstract

Claims9