FIELD: cellulose production. SUBSTANCE: proposed method involves preliminary hydrolysis of origin material which contains lignocellulose. The process is followed by neutral sulfite boiling inthe presence of anthraquinone. Thus prepared pulp is affected by alkali extraction, expense of alkali being 2-5 (3 expense being prefable). Sodium hydroxide is used as mentioned above alkali. Said process is carried out at 50-100 C, temperature 70-80 C being prefable. After alkali extraction pulp is washed. EFFECT: improves efficiency of the method. 5 cl, 12 tbl
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Authors
Dates
1995-06-19—Published
1991-02-11—Filed