ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,255, issued on June 17, was assigned to Tradebe Environmental Services LLC (Merrillville, Ind.).
"Oil demetallation and de-ashing processing by neutralization and centrifuging of flocculated heavy asphaltene hydrocarbon content" was invented by Mitch Mace (Saraland, Ala.), Ted Longsdorf (Saraland, Ala.), Alex Ortells (Saraland, Ala.) and Kenny Huy (Saraland, Ala.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method to demetal and de-ash oil feedstock. The method includes adding direct steam and sulfuric acid to oil feedstock to form acid treated oil, the sulfuric acid to strip the oil feedstock of metals, adding de-emulsifier to the acid treated ...