公开(公告)号：US11319603B2

公开(公告)日：2022-05-03

申请号：US16762570

申请日：2018-09-21

Applicant: VALMET AB

Inventor： Peter Björklund ,  Mattias Erixon ,  Francois Lambert ,  Andreas Averheim

IPC: C13K13/00 ,  C10L5/44 ,  C10L5/06 ,  B01J6/00 ,  C10L5/36 ,  C10L9/08

Abstract: A method for processing lignocellulose materials comprising the steps of hydrothermal treatment of the material with saturated or superheated steam in a hydrothermal pressure vessel, wherein the steam is provided by means of a steam boiler. The treatment is performed at a pressure of 5-30 bars, and at a temperature of 160-240° C. for a duration of 1-20 minutes. The method further comprises discharging hydrothermally treated lignocellulose material and steam from the pressure vessel by means of rapid pressure reduction, separating the steam and vapours released from the lignocellulose material, and burning the vapours together with additional fuel and combustion air in the furnace of said steam boiler. Furthermore, a corresponding system is provided.