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Valmet debuts fibreline analyzer for lignin content, brightness

May 4, 2021  By P&PC Staff

Valmet has introduced the Valmet Fiberline Analyzer for pulp makers.

The company says the tool can improve total pulp quality management, boost process stability and save on chemical costs from the digester blow line to final pulp storage.

The Valmet Fiberline Analyzer measures pulp lignin content and brightness in addition to enhanced fibre and shive property measurements using high-definition imaging techniques.


Measurement data from automatically extracted pulp samples, in addition to inline sensor information, can be combined with real-time production targets to provide set points for chemical controls from the digester to final bleaching stages.

Built-in controls can provide external set points to the chemical dosage controllers using easily understood function blocks to perform filtering and calculations.

For softwood pulps, the basic controller uses a Kappa factor control modified with predictive feedback taking Kappa/brightness, shive content and COD (Chemical Oxygen Demand) into account.

Valmet Fiberline Analyzer can also separately measure lignin and hexenuronic acid (HexA) to provide significantly improved control of the complex chemistry of cooking and delignification, especially with hardwood pulps.

The analyzer features chemical based self-cleaning and a built-in touch screen display with all analyzer operating parameters, operating sequences and diagnostics.

Remote configuration and operation as well as Valmet Industrial Internet (VII) capabilities allow for remote specialist support.

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