ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,993, issued on Feb. 17, was assigned to Meva Energy AB (Hisings Backa, Sweden).
"Purification of tar containing gas streams" was invented by Mattias Kindstrand (Savedalen, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for purifying a tar containing gas stream. The method comprises the steps of: a) contacting a tar containing gas stream with a washing liquid in a washing unit to obtain a tar containing washing liquid and a purified gas stream; b) adding an extractant to the tar containing washing liquid to obtain an extraction liquid comprising a tar containing extractant and a regenerated washing liq...