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2 141 017

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IPC

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Application

99106190/12, 1999-03-29

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Start date

1999-03-29

(22)

Actual filing date

1999-03-29

(45)

Published

1999-11-10

(72)

Inventor

Kirsanov V.A.Bakusheva T.V.Dergacheva T.A.Mutovina M.G.Bondareva T.A.Terpugov G.V.Ivanov V.F.

(73)

Holder

Oao

METHOD OF NEUTRALIZATION OF SPENT LIQUOR ON Mg BASE PRIOR TO EVAPORATION IN PRODUCTION OF CELLULOSE Russian patent published in 1999 - IPC

Abstract RU 2141017 C1

FIELD: production of cellulose by sulfite and bisulfite methods of cooking of various species of wood may be also applicable in other allied industries. SUBSTANCE: method includes treatment of liquor with magnesium-containing agent up to pH 6-7. Magnesium-containing agent is used in form of lumpy brucite sizing 10-500 mm. In this case, liquor is treated by its passing through layer of lumpy brucite, for instance, in hollow tower. EFFECT: extended raw material base of neutralizing agent, simplified method due to exclusion of operation for preparation of neutralizing agent. 2 cl, 1 tbl

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RU 2 141 017 C1

Authors

Kirsanov V.A.

Bakusheva T.V.

Dergacheva T.A.

Mutovina M.G.

Bondareva T.A.

Terpugov G.V.

Ivanov V.F.

Dates

1999-11-10—Published

1999-03-29—Filed