Valmet, a global developer and supplier of process technologies, automation and services for pulp, paper and energy industries, has launched the sixth generation of its Valmet Residual Measurement, called Valmet Polarox6. This update aims at further optimization of the bleaching process by optimizing bleaching chemical reaction, protecting process equipment and improving measurement and control accuracy.
The sixth generation update is equipped with the Valmet Bridge user interface, a touchscreen control platform commonly used with Valmet sensors. The user interface provides intuitive access to transmitter operation and Valmet’s remote services with comprehensive diagnostics and Valmet industrial internet ready capabilities.
“This update ensures the longevity and advanced connectivity of our industry standard Valmet Residual Measurement for all pulp bleaching applications,” says Timo Laurila, Business Manager, Pulp and Energy Analyzers, Automation Systems, Valmet.
Technical information
Valmet Residual Measurement provides immediate information about bleachability when installed before the bleaching tower. It is based on pre-chemical consumption (feed-forward), allowing for a fast response to adjust chemical addition controls.
When installed after the bleaching tower, it measures the residual bleaching chemical, providing accurate feedback for chemical dosage control and process equipment protection.
The sensor improves measurement and control accuracy by eliminating under- or overdosing of bleaching chemicals. It ensures the exact chemical dosage for lignin removal and brightness control, resulting in chemical savings and better-quality fibers. Additionally, the operation is safer due to no excess residual.
