- Complete pulp mills
- Chemical pulping
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Chemical recovery
- Evaporators
- Recovery boilers
- White liquor plant
- Process support and optimization
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- New value-adding processes
- Dissolving pulping
- Mechanical pulping
- Recycled fiber
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Automation for pulp
- Distributed control systems
- Quality control systems
- Analyzers and measurements
-
APC Advanced Process Controls
- Valmet WinGEMS
- Valmet Debarking Optimizer
- Valmet Batch Cooking Optimizer
- Valmet Continuous Cooking Optimizer
- Valmet Washing Line Optimizer
- Valmet Oxygen Stage Optimizer
- Valmet Bleaching Optimizer
- Valmet Evaporation Optimizer
- Valmet Recovery Boiler Optimizer
- Valmet Recovery Boiler Leak Detector
- Valmet Recovery Boiler Sootblowing Optimizer
- Valmet Causticizing Optimizer
- Valmet Lime Kiln Optimizer
- Valmet Recovery Line Management
- Mill information management
- Boiler Diagnostics Systems
- Services for pulp
- Fiber Technology Center
- Pulp references
- Pulp news and stories
- Pulp
- Mechanical pulping
- Bleaching
- High-consistency bleaching (PHC)
High-consistency bleaching (PHC)
The choice of the most cost-effective OptiBright bleaching system depends on the specific brightness target. The optimal system ensures the lowest possible chemical costs.
If, for example, a TMP with brightness of 60% ISO is to be bleached to less than 72% ISO, the recommendation based on chemical cost would be medium-consistency peroxide system or in some cases a dithionite system.
Above 72% ISO, we recommend high-consistency peroxide bleaching (PHC).