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2 385 371

(13)

(51)

IPC

D21C3/10(2006-01-01)

D21C11/02(2006-01-01)

(21) (22)

Application

2008145218/12, 2008-11-18

(24)

Start date

2008-11-18

(22)

Actual filing date

2008-11-18

(45)

Published

2010-03-27

(72)

Inventor

Sinchuk Aleksandr VladimirovichDul'Kin Dmitrij AleksandrovichKirsanov Vladimir Anatol'EvichKirsanova Ljubov' DmitrievnaMutovina Milja Grigor'EvnaBondareva Tamara AleksandrovnaTjurin Evgenij Timofeevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Institut Bumagi"Obshchestvo S Ogranichennoj Otvetstvennost'Ju Bumazhnye Fabriki" Bumazhnye Fabriki")

METHOD TO PRODUCE BISULPHATE MAGNESIUM-BASED COOKING LIQUOR FOR MANUFACTURE OF CELLULOSE Russian patent published in 2010 - IPC D21C3/10 D21C11/02

Abstract RU 2385371 C1

FIELD: process engineering.

SUBSTANCE: proposed method to produce bisulphate magnesium-based cooking liquor for manufacture of cellulose can be used in pulp and paper industry. Method is performed in two steps. First step comprises interaction of lumpy brucite with sulfur dioxide of bisulphate solution with pH 3-5 to produce intermediate solution with pH 5-7 and a 55-85% fraction of bound sulfur dioxide. Second step comprises interaction of produced solution with sulfur dioxide of kiln gas to produce ready bisulphate solution with pH 3.0-5.0 and 47-55%. fraction of bound sulfur dioxide.

EFFECT: perfected performances.

1 tbl, 3 ex

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RU 2 385 371 C1

Authors

Sinchuk Aleksandr Vladimirovich

Dul'Kin Dmitrij Aleksandrovich

Kirsanov Vladimir Anatol'Evich

Kirsanova Ljubov' Dmitrievna

Mutovina Milja Grigor'Evna

Bondareva Tamara Aleksandrovna

Tjurin Evgenij Timofeevich

Dates

2010-03-27—Published

2008-11-18—Filed