Pulping procedure

Details Pulping procedure Pulping procedure

D - Textiles, Paper

21

C

8/80

D21C 9/14 (2006.01) D06L 3/08 (2006.01)

Patent

CA 1111607

IMPROVED PULPING PROCEDURE ABSTRACT OF THE DISCLOSURE The adverse effects of dissolved organic material in the aqueous phase of pulp suspensions during bleaching using mixtures of chlorine dioxide and chlorine are overcome by applying the chlorine dioxide and chlorine serially to the pulp in two steps without an intermediate wash. An aqueous solution of chlorine dioxide or an aqueous solution of chlor- ine dioxide and chlorine may be used in the first step and chlorine is used in the second step.

323926

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