FIELD: production of cellulose. SUBSTANCE: method involves providing circulation of liquid used at predetermined process stage between containers or vessels arranged at inflow and discharge sides of autoclave; connecting autoclave to circulation system, when mentioned process stage is achieved. Method allows minimum amounts of newly added chemicals and sweet water to be consumed. Method may be used for cooking pulp in autoclave. EFFECT: increased efficiency and reduced expenses. 8 cl, 10 dwg
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