Aspen Products Group is developing a desulfurization process and system that is able to remove sulfur-bearing constituents from liquid fuels such as diesel, gasoline and jet fuel. The absorbents utilized in the desulfurization process are fully regenerable upon exposure to air. The high activity of the absorbent, combined with the ease of regeneration, allows the desulfurization of high sulfur content fuels (up to 1 wt% sulfur) to be conducted in a compact and efficient device.



Continuous desulfurization is achieved by feeding sulfur-containing fuel and air into the desulfurizer. There is no limit on the amount of fuel that can be desulfurized and no need to swap out saturated absorbent cartridges, as sulfur is continuously rejected from the desulfurizer in the form of sulfur oxides.

Depending upon the fuel and the precise operating conditions of the desulfurizer, sulfur removal efficiencies of 80 to 99% have been demonstrated. Commercial diesel fuel containing up to 300 ppmw sulfur can be routinely desulfurized to 30 ppmw sulfur. Conversion of jet fuel (Jet-A) containing 1650 ppmw sulfur into a cleaner fuel containing less than 15 ppmw sulfur is also readily achieved.

Desulfurization of Jet A – APG’s regenerable desulfurization process continuously removes 99% or more of the sulfur present in logistic fuels.



EXAMPLE: Commercial Jet A fuel gas chromatography demonstrates removal of both simple and complex sulfur compounds.