The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2025
Filed:
Feb. 12, 2020
Valmet Ab, Sundsvall, SE;
Per Eriksson, Alnö, SE;
VALMET AB, Sundsvall, SE;
Abstract
A system () for refining lignocellulosic biomass material (A) comprising a presteaming bin (), a dewatering device (), a preheater (), a defibrator () comprising at least one refining zone () wherein steam is generated during refining of said biomass material so that a pressure peak occurs, a blowpipe (), and a first steam flow path (D) arranged to convey steam from said refining zone to said presteaming bin (). The system further comprises a second steam flow path (E) arranged to convey steam from said refining zone to said presteaming bin, wherein said first and second steam flow paths are connected to the refining zone on opposite sides of the pressure peakin a biomass material transport direction, and wherein said first and second steam flow paths are separate from said blow pipe. The invention also relates to a process for refining lignocellulosic biomass material.