METHOD OF CELLULOSE STOCK TREATMENT WITH CELLULOSE BLEACHING Russian patent published in 2008 - IPC D21C9/02 D21C9/14 D21C9/153 

FIELD: textile, paper.

SUBSTANCE: method relates to cellulose stock treatment with cellulose bleaching. Cellulose stock is cured at least at stages of ozone, chloride dioxide or alkali extraction and then washed in washing machine with E₁₀ value equal to at least 3 preferably higher than 4. Washing liquid is introduced to washing machine as counter flow with regard to cellulose stock and is washed so that washing liquid is a filtrate produced from the washing machine. Circulating washing liquid amount is 1.5-3.5 "т/вст" of cellulose stock. After that cellulose stock is washed with liquid introduced from the outside of washing machine. Amount of the said liquid is such that dilution factor in the last washing is no less than 1 "т/вст". Full amount of washing liquid used in washing machine is such that dilution factor is more than 0 "т/вст".

EFFECT: effective method of cellulose stock treatment with cellulose bleaching.

5 cl, 3 dwg