METHOD AND APPARATUS FOR CONTROLLING THE CATALYTIC OXIDATION OF CELLULOSE

摘要

A method for controlling the catalytic oxidation of cellulose comprises: - using a heterocyclic nitroxyl compound as catalyst, - oxidizing cellulose in a reaction mixture comprising liquid medium, the catalyst and hypochlorite as main oxidant, - analyzing one or more oxidative chlorine species dependent on the hypochlorite concentration of the reaction mixture on line in the reaction mixture or in a gas composition which is in contact with the reaction mixture, and - controlling supply of hypochlorite to the reaction mixture on the basis of the analysis.