Valmet Washing Line Optimizer

The Valmet Washing Line Optimizer application adapts washing liquor flows to the production rate and the capacities of the washers to result in desired washing efficiency. Optimized washing efficiency maximizes the cooking chemical removal from fibers during the washing process. Due to low washing losses unnecessary use of bleaching chemicals is avoided. The used fuzzy logic controls and soft sensors enhance the disturbance tolerance of the process.

A new way for economic pulp production

Features

Optimizing controls of individual washers

Valmet Washer Optimizer for DD washer

Washing line optimization

Washing factor optimization
Tank farm level controls
Automatic grade change
Consistency profiling controls

Dynamics adaptation

Washing efficiency control
Evaporation load

Benefits

Reduced loss in washing
More dry solids to evaporation
Less deviation in washing loss and dry solids
Higher washing outlet consistency
Facilitated washing line operation
Elimination of human errors
Improved disturbance toleration
Increased production

Customer success stories

Dry solids to evaporation up 7.5% by optimizing the washing line

An integrated pulp and paper mill in the USA decided to optimize their brown stock washing line producing 1000 tons per day with good results.