HIGH-REFINED CELLULOSE PRODUCTION PROCESS Russian patent published in 2005 - IPC

Abstract RU 2248421 C1

FIELD: paper-and-pulp industry.

SUBSTANCE: process of producing high-refined cellulose for manufacture of man-made fibers and films comprises water or acid pre-hydrolysis of disintegrated vegetable material followed by delignification of pre-hydrolyzed wood by way of catalyzed peroxide pulping and alkali extraction of oxidized lignin at atmospheric pressure. Final operations are bleaching and alkali refining of cellulose.

EFFECT: improved quality of cellulose, improved environmental safety of process, and reduced power consumption.

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RU 2 248 421 C1

Authors

Poljutov A.A.

Byvshev A.V.

Pen R.Z.

Shapiro I.L.

Kolmakova O.A.

Dates

2005-03-20—Published

2004-01-14—Filed