FIELD: production of cellulose.
SUBSTANCE: invention relates to production of microcrystalline cellulose - fine cellulose material - from various types of lignocellulose materials obtained from wood semi-finished products during processing at pulp and paper enterprises, commercial cellulose obtained from plants, including wood raw material, annual and perennial non-wood cultures, including cotton. Method of producing microcrystalline cellulose is carried out by decomposing cellulose stock using an acid solution, obtained product is washed and dried. At that, before decomposition process, cellulose raw material is dissolved in water, mixed with dispersion, obtained suspension is filtered out, the obtained residue is washed with water, repeatedly filtered by using vacuum until free water is removed from it.
EFFECT: invention enables to remove bulk of impurities contained in the raw material and obtain a product with high degree of purity.
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