Brownstock washing is a complex, dynamic process in which dirty wash water or weak black
liquor (dissolved organic and inorganic material obtained from the pulp cooking process) is
separated from pulp fibers. The use of material balance techniques is of great importance to
identify potential problems and determine how well the system is operating. The kraft
pulping industry was the first known to combine pulp washing with the recovery of materials
used and produced in the wood cooking process. The motivation behind materials recovery …