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1. (WO2018122454) A METHOD AND AN APPARATUS FOR RECOVERING FURFURAL

Pub. No.:    WO/2018/122454    International Application No.:    PCT/FI2017/050930
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Sat Dec 23 00:59:59 CET 2017
IPC: C07D 307/50
Applicants: UPM-KYMMENE CORPORATION
Inventors: TAMPER, Juha
SALMINEN, Jere
MIETTINEN, Mauno
TURUNEN, Sami
VENTOLA, Meri
NISSINEN, Vilho
Title: A METHOD AND AN APPARATUS FOR RECOVERING FURFURAL
Abstract:
Ina method and an apparatus furfuralis recovered from a steam stream (3) which is formed in a treatment of a pretreated wood based material (1).The pretreated wood based material (1) which comprises at least carbohydrates is treated in a steam treatment stage (2) in which the steam is released. The steam stream (3) which comprises furfural is supplied out from the steam treatment stage (2). A pretreated andsteam-treatedwood based material(4)which comprises carbohydrates is supplied out from the steam treatment stage (2),andthe steam stream (3) is treated in a recovery stage (12a, 12b) for recovering a furfural based fraction (14a,14b).