ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,841, issued on Feb. 17, was assigned to Airco Process Technology A/S (Fredericia, Denmark).
"Method for reducing methane emissions from biogas upgrading" was invented by Rasmus Find (Vejle, Denmark).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for upgrading biogas generated by a biological process wherein at least carbon dioxide is removed from the bio-gas. More specifically the present invention relates to method for upgrading a biogas comprising a first absorption step wherein the liquid effluent is subjected to a second absorption step and a flash step and the gas streams resulting therefrom are recycled...