Navy

Sustainable, high performance fuels and lubricants

24 issued US patents; 5 US patents pending; and 9 international patent filings enable private industry to license for production, sales

Energy

A research team at the Naval Air Warfare Center in China Lake, California, has invented a suite of high-density fuels, lubricants, and related technologies generated from sustainable sources like biomass sugars. The patented formulations are available via license agreement to companies that would make, use, or sell the fuels commercially.

The U.S. Navy showed its commitment to the utilization of green fuels on January 20th, 2016, with the deployment of the USS John C. Stennis Carrier Strike Group.

The USS Stockdale, part of the strike group, was the first U.S. Navy ship to run an alternative fuel blend as part of its regular operations. Other surface ships were refueled with alternative fuel from a fleet replenishment oiler and a combat support ship. But, sailing of the green fleet has had several hurdles to overcome and more are on the horizon. Converting a diesel ship to run on renewable fuels requires engineering, retrofitting, logistics, distribution changes, and a host of other tasks to be completed.

Doing the same for jets and other high-performance vehicles is technically challenging. It has been difficult to get performance from renewables that meet that of petroleum-based fuels. Energy density, flash point, cetane number, viscosity across a temperature range, stability (to oxygenation),  and several other parameters have been difficult to achieve in jet fuel at scale and within reasonable costs.

The Navy researchers, led by Dr. Benjamin Harvey, continue to look at ways to engineer higher performance renewable fuels and to that end, have developed several novel approaches that meet and exceed requirements. The methods, processes, and derived fuels are embodied in the suite of patents, both domestic and foreign, as well as patent applications listed below.

8,975,463 – Diesel and jet fuels based on the oligomerization of butane

8,227,651 – High-density renewable fuels based on the selective dimerization of pinenes

8,785,702 – Turbine and diesel fuels and methods for making the same

8,344,196 – Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels

8,242,319 – Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels (includes an additional separation step on unreacted olefins by temperature controlled distillation)

8,350,107 – Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels (process combines multiple steps into one)

8,969,636 – Homogeneous metallocene Ziegler-Natta catalysts for the oligomerization of olefins in aliphatic-hydrocarbon solvents

9,266,792 – Process and apparatus for the selective dimerization of terpenes and alpha-olefin oligomers with a single-stage reactor and a single-stage fractionation system

9,522,854 – Process and apparatus for the selective dimerization of terpenes and poly-alpha-olefins with a single-stage reactor and a single-stage fractionation system (system and apparatus)

9,242,226 – Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes

8,912,373 – Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes (includes an expanded list of bio-1-alcohols and use of a Ziegler-Natta catalyst to form oligomers useful in preparing high flashpoint biodiesel fuels and specific cetane ratings)

9,327,279 – Methods for the production of renewable dimethyl JP10 (isomerizing hydrogenated methylcyclopentadienes dimers with a Lewis acid catalyst to produce high-density fuels)

8,975,463 – Efficient conversion of pure and mixed terpene feedstocks to high-density fuels

8,987,539 – Acyclic monoterpenes as biofuels based on linalool and method for making the same

9,181,144 – Diesel and jet fuels based on the oligomerization of butane (process)

9,493,717 – High-density cyclic fuels derived from linear sesquiterpenes

9,649,626 and WO 2013032543 – Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes (utilizes γ-alumina as the solid support)

9,266,798 – Acyclic monoterpenes as biofuels based on linalool and method for making the same (fuel)

9,617,488 – Efficient conversion of pure and mixed terpene feedstocks to high-density fuels

9,732,295 – Diesel and jet fuels based on the oligomerization of butane (fuels)

9,816,043 – Acyclic monoterpenes as biofuels based on linalool and method for making the same (biolubricants)

9,802,873 – Methods for the production of renewable Dimethyl JP10 (oligomerizing isobutylene with a catalyst to yield gasoline, jet fuel, and polymers/elastomers)

9,994,498 – Renewable High-Density Turbine And Diesel Fuels From Sesquiterpenes

10,323,198 – High Density Renewable Fuels From Zizaenes

20120209047 – Homogeneous metallocene Ziegler-Natta catalysts for the oligomerization of olefins in aliphatic-hydrocarbon solvents

20130197279 and WO 2013077904  – Water and Contaminants Removal from Butanol Fermentation Solutions and/or Broths Using a Brine Solution

EP 2748132 A1 – A process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes

EP 2748132 A4 – A process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes

WO 2012149108 – Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels

WO 2013106065 – Homogeneous metallocene Ziegler-Natta catalysts for the oligomerization of olefins in aliphatic-hydrocarbon solvents

WO 2013141887 – Process and apparatus for the selective dimerization of terpenes and alpha-olefin oligomers with a single-stage reactor and a single-stage fractionation system

WO 2013032550 A1 – A process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes

WO 2013032550 A8 – A process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes

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