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Valmet introduces its brown stock analyzer for kraft pulping

June 7, 2023  By P&PC Staff

Photo: Valmet

Valmet has developed the Valmet Brown Stock Analyzer to complement its online pulp quality analyzer family. The analyzer reportedly provides high analysis frequency for digester and brown stock washing control in kraft pulping.

The company states that it is a robust Kappa measurement for high yield and brown pulp, designed to measure the coarsest pulp starting from cooking blow line.

Valmet Brown Stock Analyzer utilizes a sampling technology to extract a pulp sample and transport it to the analysis unit, where the dissolved lignin is thoroughly washed, and pulp Kappa number analyzed by an advanced optical measurement technology. The Kappa measurement range is 9–120.


The pulp sample handling principle minimizes water consumption, ensuring effective opera­tion even with high shive content pulps. A low number of moving and wearing parts minimizes the need for maintenance. The user-friendly analyzer design keeps operators away from the harsh process environment. According to the company, this ensures that laboratory sampling is carried out in a convenient and safe loca­tion with the automated built-in laboratory collector. Only the process sampling device is connected to the pressurized pulp process.

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