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:
Dec. 08, 2020
Filed:
Dec. 22, 2017
Upm-kymmene Corporation, Helsinki, FI;
Juha Tamper, Levänen, FI;
Hans Hasse, Kaiserslautern, DE;
Nadia Galeotti, Kaiseslautern, DE;
Fabian Jirasek, Kaiserslautern, DE;
Jakob Burger, Straubing, DE;
UPM-KYMMENE CORPORATION, Helsinki, FI;
Abstract
In a method and an apparatus furfural is separated from a material stream () which is formed in a treatment of a pretreated wood based material (). The material stream () which comprises at least furfural is introduced to a separation column (). A top vapor condensate () is introduced from a top end of the separation column () to a decanter () in which two liquid phases () are separated from each other. An organic phase () which comprises at least furfural is recovered, and an aqueous phase () is supplied as a reflux to the separation column (). Further, the invention relates to a furfural based product and chemical product and a use of the organic phase.