Date of Award


Degree Name

Bachelor of Science


A study was conducted to determine the behavior of pulp flows through a motionless mixer. Specifically, the effects of stock consistency, pulp type, and number of mixing elements on the pressure drop across a motionless mixer were examined. An attempt was made to develop correlations between pressure drop across the motionless mixer due to pulp flows and the consistency of the pulp slurries. From the data generated by this study, it was determined that using the value of pressure drop across the motionless mixer to determine pulp consistency is not very feasible. However, the empirical data generated should be useful for helping to determine the economics of motionless mixer applications in the pulp and paper industry.

Keywords: Consistency, pulps, mixers, pressure gradient, friction