Paper & Pulp

Digester

Business Problem

Low variability of blowline kappa has a direct impact on pulp quality and economics of the mill. Less sophisticated approaches for digester control optimization result in up to 93% variability improvement and reported annual savings of up to USD 1.8 million/year* for a single pulping line.

Challenge

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