Methods of producing jet fuel from natural oil feedstocks through metathesis reactions

Patent metadata

Field	Value
Publication number	US-9273258-B2
Application number	US-201414563447-A
Country	US
Kind code	B2
Filing date	Dec 8, 2014
Priority date	Nov 26, 2008
Publication date	Mar 1, 2016
Grant date	Mar 1, 2016

Abstract

Methods are provided for producing a jet fuel composition from a feedstock including a natural oil. The methods include reacting the feedstock with a low-weight olefin in the presence of a metathesis catalyst under conditions sufficient to form a metathesized product. The methods further include hydrogenating the metathesized product under conditions sufficient to form a jet fuel composition.

First claim

What is claimed is:

1. A method of producing a jet fuel composition comprising:
providing a feedstock comprising natural oil glycerides or derivatives thereof, wherein the derivatives are obtained by saponification, esterification, hydrogenation, isomerization, oxidation, reduction, or a combination thereof;
reacting the feedstock with a low-weight olefin to provide a metathesized product having metathesized glycerides or metathesized derivatives thereof, wherein the metathesized glycerides or metathesized derivatives thereof comprise ester, acid, or alcohol moieties; and
hydrogenating the metathesized product to provide a jet fuel composition, wherein at least a portion of the metathesized glycerides or the metathesized derivatives thereof having the ester, acid, or alcohol moieties are converted into paraffin.

2. The method of claim 1 , further comprising isomerizing the jet fuel composition, wherein at least a portion of normal-paraffin compounds in the jet fuel composition are isomerized into iso-paraffin compounds.

3. The method of claim 1 , wherein the jet fuel composition comprises C 2 -C 4 hydrocarbons, C 18 + compounds, or water, and wherein the method further comprises separating at least a portion of the C 2 -C 4 hydrocarbons, at least a portion of the C 18 + compounds, or at least a portion of the water from the jet fuel composition.

4. The method of claim 3 , further comprising isomerizing the jet fuel composition after the separating, wherein at least a portion of normal-paraffin compounds in the jet fuel composition are isomerized into iso-paraffin compounds.

5. The method of claim 1 , wherein the low-weight olefin comprises at least one low-weight olefin selected from the group consisting of ethylene, propylene, 1-butene, and 2-butene.

6. The method of claim 1 , wherein the low-weight olefin comprises an alpha-olefin.

7. The method of claim 6 , wherein the alpha-olefin is a C 2 -C 10 alpha-olefin.

8. The method of claim 1 , wherein the low-weight olefin comprises 1-butene.

9. The method of claim 1 , wherein the low-weight olefin comprises at least one C 4 to C 10 branched olefin.

10. The method of claim 1 , wherein the jet fuel composition has a hydrocarbon distribution centered at C 10 to C 12 hydrocarbons.

11. The method of claim 1 , wherein the jet fuel composition comprises at least 70 wt % C 9 -C 15 alkanes based on a total weight of hydrocarbons in the jet fuel composition.

12. The method of claim 1 , wherein the jet fuel composition comprises at least 80 wt % C 9 -C 15 alkanes based on a total weight of hydrocarbons in the jet fuel composition.

13. The method of claim 1 , wherein the natural oil glycerides comprise natural oil triglycerides.

14. The method of claim 1 , wherein the natural oil glyceride derivatives comprise fatty acid methyl esters.

Assignees

• Elevance Renewable Sciences

Inventors

• Luetkens Jr Melvin L
• Cohen Steven A
• Balakrishnan Chander

Classifications

• C10L1/04 Primary

  essentially based on blends of hydrocarbons · CPC title

• C10G2300/1088

  Olefins · CPC title

• Y02P30/20

  using bio-feedstock · CPC title

• C10L2200/0484

  Vegetable or animal oils · CPC title

• C10L2270/04

  for turbines, planes, power generation · CPC title