G050024 Fiber-Consistency Distribution of Papermaking Pulp Suspension Flowing in a Duct

Abstract

The fiber consistency of papermaking pulp-suspension flow has been investigated experimentally. The measurements were made by the optical method which has been developed by the authors(2010). DisUibutions of time-averaged andnuctuating fiber-consistencies of pulp suspension in ducts were obtained and illustrated. On the basis of the results,characteristics of the pulp suspension flow were examined. Simultaneously, discussions were given on the transition of five patterns found for pulp suspension flows. The degree of uniformity of the fiber consistency, that is suggested as the standard deviation of its distribution, is decreased from 0.3 to 0.05 with an increase of velocity for the test pulp suspensions of Cs=0.4〜0.8%.