Customer case:

Minimizing deadload brings savings

Feb 26, 2025

Kraft pulp mill in United States was able to eliminate overliming and reduce deadload with Valmet Recovery Liquor Analyzer (Valmet Alkali R) and Valmet Causticizing Optimizer with raw green liquor quality optimizer. Valmet's solution brings savings in chemical and energy costs.

“We wanted decrease variability of our green liquor TTA and white liquor CE% as well as increase the concentration of both variables. Valmet was able to eliminate overliming and reduce deadload in liquor cycle leading to significant chemical and energy savings”

Recovery Plant Manager, Kraft pulp mill

Summary

Location	North America
Customer challenge	Minimize hydraulic and chemical deadload Reduce TTA and CE% variability Eliminate overliming
Solution	Valmet Recovery Liquor Analyzer (Valmet Alkari R) with 2 titration modules Valmet Causticizing Optimizer with raw green liquor quality optimizer
Results	Reduced GL TTA variability by 72% and increased TTA by 2 g/l as Na2O Last causticizer CE% variability reduced by 70% Increased white liquor effective alkali by 9 g/l KPI shift savings $790 k/a
Keywords	Pulping and fiber, North America, Automation

Recovery Liquor Analyzer

The Valmet Recovery Liquor Analyzer (Valmet Alkali R) provides tools to improve recovery boiler reduction performance with its unique on-line reduction degree measurement.

Valmet Causticizing Optimizer

Valmet Causticizing Optimizer for optimized causticizing process manages green liquor TTA-, causticizing degree-, and slaker controls. Application stabilizes the green liquor density flowing to the slaker.