FIELD: chemical processing of cereal crop straw into fine-grain cellulose used in pharmaceutical, food-processing, perfume and chemical branches of industry.
SUBSTANCE: method involves combining processes of delignification and hydrolysis of ground wheat straw by processing basic material with solution containing mixture of acetic acid and hydrogen peroxide at molar ratio of 0.2-0.6 in the presence of sulfuric acid catalyst used in an amount of 1-3% by weight of totally dry straw with duty of water of from 5 to 10, temperature of 110-140 C during 2-4 hours; processing resultant fibrous product with mixture of acetic acid and hydrogen peroxide with molar ratio of 0.1-0.3, at temperature of 100-120 C, duty of water of from 5 to less than 10 during 1-3 hours.
EFFECT: increased efficiency and improved quality of fine-grain product.
1 tbl, 8 ex
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