Optimise your entire liquor cycle and control alkali levels with ease

Valmet Recovery Liquor Analyzer (Valmet Alkali R)

Increase mill production with maximum confidence. The Valmet Recovery Liquor Analyzer (Valmet Alkali R) enables you to raise the quality and strength of cooking liquor, react faster to disturbances and improve process throughput.

Improve every process in the entire pulp mill

Measure absolute chemical concentrations from raw green liquor to white liquor

Get more production out of existing process equipment at minimum costs

Improve the sustainability of your entire liquor cycle

Critical to liquor cycle sustainability is how well you can recover chemicals and generate energy from black liquor. Using automatic real-time sampling and robust titration methods, the Valmet Alkali R directly measures the key chemical values you need to maximize production.

The Valmet Alkali R measures absolute chemical concentrations and calculates Reduction Degree, Effective Alkali, Active Alkali, Total Titratable Alkali (TTA), Causticizing Degree, and Sulfidity. With this data in hand, you have complete control of recovery efficiency, ensuring high-quality white liquor is delivered to the digester.

In addition to eliminating harmful overliming, your white liquor filters require less cleaning. This results in higher causticizing output, savings in cleaning chemical costs and better lime mud quality leading to higher lime kiln production capacity.

Eliminate bottlenecks for energy efficiency across the mill

Thanks to the precision and reliability of the Valmet Alkali R, you can confidently drive processes at maximum white liquor concentration without risking overliming or scaling of the raw green liquor lines. Remove the typical bottleneck at evaporation and boost recovery boiler with precision control of green and white liquors.

One of the challenges of chemical recovery line has been collecting reliable information that can be analyzed and easily understood. With the Valmet Alkali R, you can safely monitor and control recovery process parameters on a level far exceeding laboratory frequency and precision.

The Valmet Alkali R brings a new opportunity to tighten control over chemical recovery of the recovery boiler, leading to higher reduction degree and green liquor TTA. With an optimized liquor chemistry, you achieve higher steaming rates or liquor throughput in the recovery boiler.

Safe, easy and built to last

Thanks to its straightforward ABC titration method, the Valmet Alkali R is extremely fast to start up and use. Automatic self-diagnostics continuously monitors the condition of the analyzer, as well as maintaining a check on the validity of the measurement results.

Each sample line is automatically flushed clean after sampling to prevent plugging. Routine self-tests cover valve operation, flow rates, level sensors, cleaning sequence efficiency and measurement results. The rugged build of the analyzer ensures high uptime with minimal maintenance. Every Valmet device is supported by our global service network.

A track record you can rely on

The Valmet Alkali R is designed to meet a wide range of needs and process sizes. As many as 16 sampling lines can be installed in one analyzer. Depending on measurement frequency and scope, the analyzer can include two different titrator modules.

The Valmet Alkali R delivers a strong return on investment for every customer. Modern pulp mills see significant annual cost savings from being able to optimize the entire liquor cycle.

Higher chemical recovery, better heating value of black liquor, improved pulp mill throughput, and faster recovery from process upsets are just some of the many ways the Valmet Alkali R helps you run your mill better.

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Related references

High precision measurement for recovery process at Altri group

Biotek and Celbi pulp mills replaced their previous generation of Valmet Recovery Liquor Analyzers reinforcing their trust in Valmet's technology to monitor their process. The recovery liquor analyzers give the mills valuable information of their recovery boiler and causticizing.

Mitsubishi Hachinohe optimizes recovery boiler performance

Mitsubishi Paper Hachinohe Mill acquired a Valmet Recovery Liquor Analyzer with an advanced process control (APC) application, Valmet Recovery Boiler Optimizer, to the mill’s chemical recovery process. Along with improving recovery boiler efficiency, Mitsubishi Hachinohe Mill combats climate change through accurate online analyses and optimization.

Navigator Cacia and Valmet team up to optimize causticizing process targets

Online liquor analysis and advanced controls stabilize the liquor conversion chain and increase white liquor active alkali by 3%. With extra process visibility problems were uncovered, leading to further improvements and ROI potential at the Navigator Company’s Cacia mill in Portugal.

Visy Tumut exceeds targets by optimizing causticization

Visy’s kraft mill in Tumut wanted to optimize its process performance and ensure process competitiveness with the latest technology. With causticizing optimization, their expectations and return on investment (ROI) targets have been exceeded.

Hyogo Pulp invests in both quality and process control

Hyogo Pulp Tanigawa mill recently invested in new measurement technology from Valmet, to ensure the highest quality of pulp in addition to improving process efficiency.

From smelt to white liquor

The whole white liquor production is now more automated and its process is frequently followed by the Valmet Alkali R analysis system.