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2 015 235

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IPC

(21) (22)

Application

92006248/12, 1992-11-19

(22)

Actual filing date

1992-11-19

(45)

Published

1994-06-30

(72)

Inventor

Kharchenko G.S.Galin G.V.Filatov M.M.Mutovina M.G.Grankin Ju.V.Bondareva T.A.Samsonov N.E.Afanas'Ev B.S.Novozhilov V.A.Vilisov V.I.Vyrva L.V.

(73)

Holder

Krasnojarskij Tselljulozno-Bumazhnyj Kombinat

METHOD OF PREPARING OF BISULFITE LEAFY HEMICELLULOSE ON THE MAGNESIUM-BASE Russian patent published in 1994 - IPC

Abstract RU 2015235 C1

FIELD: cellulose production. SUBSTANCE: method involves addition of chip and magnesium bisulfite solution into digester and following cooking of wood chip at increased temperature. After addition of magnesium bisulfite solution into digester and before cooking 8-10% suspension of magnesium oxide (2.5-5% on conversion to dry matter of mass of absolute dry wood chip) is added, and cooking is carried out at pH 5.3-7.5. EFFECT: improved method of preparing. 1 tbl

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RU 2 015 235 C1

Authors

Kharchenko G.S.

Galin G.V.

Filatov M.M.

Mutovina M.G.

Grankin Ju.V.

Bondareva T.A.

Samsonov N.E.

Afanas'Ev B.S.

Novozhilov V.A.

Vilisov V.I.

Vyrva L.V.

Dates

1994-06-30—Published

1992-11-19—Filed