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:
Jun. 22, 2021
Filed:
Dec. 22, 2017
Upm-kymmene Corporation, Helsinki, FI;
Juha Tamper, Levänen, FI;
Jere Salminen, Lappeenranta, FI;
Mauno Miettinen, Lappeenranta, FI;
Sami Turunen, Lappeenranta, FI;
Meri Ventola, Lappeenranta, FI;
Vilho Nissinen, Vehkataipale, FI;
UPM-KYMMENE CORPORATION, Helsinki, FI;
Abstract
In a method and an apparatus furfural is recovered from a steam stream () which is formed in a treatment of a pretreated wood based material (). The pretreated wood based material () which comprises at least carbohydrates is treated in a steam treatment stage () in which the steam is released. The steam stream () which comprises furfural is supplied out from the steam treatment stage (). A pretreated and steam-treated wood based material () which comprises carbohydrates is supplied out from the steam treatment stage (), and the steam stream () is treated in a recovery stage () for recovering a furfural based fraction ().