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2 671 161

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(51)

IPC

B27K5/00(2006-01-01)

C07C47/56(2006-01-01)

C07C47/575(2006-01-01)

C07C47/58(2006-01-01)

C07C51/00(2006-01-01)

(21) (22)

Application

2017141322, 2017-11-27

(24)

Start date

2017-11-27

(22)

Actual filing date

2017-11-27

(45)

Published

2018-10-29

(72)

Inventor

Tarabanko Valerij EvgenevichKajgorodov Konstantin LeonidovichChernyak Mikhail YurevichMorozov Andrej AndreevichTarabanko Nikolaj ValerevichSmirnova Marina AleksandrovnaDubynin Evgenij VladimirovichBoyarchuk Dmitrij Valentinovich

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Nauchnoe Uchrezhdenie Issledovatelskij Tsentr Nauchnyj Tsentr Sibirskogo Otdeleniya Rossijskoj Akademii Nauk" Knts So Ran, Knts So Ran)

METHOD OF WOOD CHEMICAL PROCESSING Russian patent published in 2018 - IPC B27K5/00 C07C47/56 C07C47/575 C07C47/58 C07C51/00

Abstract RU 2671161 C1

FIELD: technological processes.

SUBSTANCE: present invention relates to a process for the preparation of fine products – vanillin, syringaldehyde and cellulose. Method of chemical processing of wood includes acid prehydrolysis, followed by catalytic oxidation of the feedstock with oxygen in an alkaline medium at elevated temperature and pressure in vanillin, syringaldehyde and cellulose. In the catalytic oxidation step, oxygen is fed into the reactor in 2 to 5 separate portions of 8–22 % by weight, based on lignin, at regular intervals until the maximum concentration of aromatic aldehydes is reached.

EFFECT: technical result of the invention consists in reducing the consumption of alkali and oxygen during the catalytic oxidation of lignocellulose to aromatic aldehydes and cellulose.

1 cl, 1 tbl, 8 ex

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RU 2 671 161 C1

Authors

Tarabanko Valerij Evgenevich

Kajgorodov Konstantin Leonidovich

Chernyak Mikhail Yurevich

Morozov Andrej Andreevich

Tarabanko Nikolaj Valerevich

Smirnova Marina Aleksandrovna

Dubynin Evgenij Vladimirovich

Boyarchuk Dmitrij Valentinovich

Dates

2018-10-29—Published

2017-11-27—Filed