Business Problem

Low variability of blowline kappa has a direct impact on pulp quality and economics of the mill. Digester control optimization can result in up to 93% variability improvement and reported annual savings of USD 1.3 million/year or more for a single pulping line.


Operational challenges for the digester include inherent process variability, external disturbances; as well as long transport delays and column movement. Making tight control of Kappa and other quality measures challenging for traditional control technologies.

SentianController solution

SentianController would stabilize pulp quality measures including blow line Kappa by continuously predicting the Kappa profile along the digester’s length and taking proactive correctional action.