METHOD OF CELLULOSE OBTAINING Russian patent published in 2015 - IPC D21C3/04 

FIELD: chemistry.

SUBSTANCE: method of obtaining cellulose consists in cooking wood chips at a temperature of 98-100°C, intensive mixing and atmospheric pressure in a mixture, which contains 3.0-5.6 wt % of hydrogen peroxide and 15.0-25.0 wt % of acetic acid in the presence of a titanium dioxide catalyst, present in an amount of 0.5-1.0% of the chips weight with cooking duration for 2.5-3.5 hours and a hydromodulus of 5-15 with the following separation of the target product.

EFFECT: improvement of the ecological safety of the process and simplification of the method due to the application of the inert titanium dioxide catalyst with the preservation of high output and quality of the cellulose product.

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