New insights into Optimizing Brown Stock Washing

K-Patents together with South-Eastern Finland University of Applied Sciences XAMK gathered the top professionals of brown stock washing process to a seminar to the very roots of this application, in the city of Savonlinna, Finland. The audience consisted of representatives from StoraEnso, Andritz, Kemira, and professors, researchers, and students from Aalto University and Mikkeli University of Applied Sciences and a handful of K-Patents employees. Everyone was keen on exchanging new developments on products and research, and networking.

The focus was brown stock washing optimization and the message was clear throughout the day: Brown stock washing might happen at very early stage in the paper making process, but it is an important step as it will affect all the subsequent production stages, the economics of the mill as well as the end quality of the product, the paper. Riku Kopra, PhD in Environmental and cellulose technology and RDI Specialist at FIberLaboratory, of XAMK stated: “If brown stock washing is not functioning, the whole pulp mill is not functioning efficiently from the economical perspective.” During Dr. Kopra’s presentation, the seminar audience got treated with the latest, yet unpublished study of the benefits of continuous in-line measurement. Other topics included waste water treatment and O2 delignification, of which performances are also enhanced by using a real time Total Dissolved Solids (TDS) control.

Measuring Total Dissolved Solids (TDS)
Prior to K-Patents total dissolved solids measurement technology, suitable methods for optimizing brown stock washing did not exist. Some conventionally measurements used actually give only a fraction of the information needed for washing monitoring, controlling and optimization.

Measuring Total Dissolved Solids (TDS)

First step for efficient brown stock washing optimizing is to know continuously and in real-time the different developments in the process. This information builds the basis to which the adjustments and optimization is done. Read more about Brown Stock Washing here.

Press contact:
Mona Kokkonen, Communications Manager. Email: mona.kokkonen[at]