ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,329, issued on May 20, was assigned to VALMET AB (Sundsvall, Sweden).
"System and process for refining lignocellulosic biomass material" was invented by Per Eriksson (Alno, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system (1) for refining lignocellulosic biomass material (A) comprising a presteaming bin (2), a dewatering device (3), a preheater (4), a defibrator (9) comprising at least one refining zone (14) wherein steam is generated during refining of said biomass material so that a pressure peak occurs, a blowpipe (19), and a first steam flow path (D) arranged to convey steam from said refining zone to said presteaming bin (2). The ...