Customer case:

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

Dec 8, 2020

An integrated pulp and paper mill in the USA has had a long-term partnership with Valmet. The mill decided to optimize their brown stock washing line producing 1000 tons per day with good results.

The results of optimizing pulp mill's washing line

Summary

Location USA
Challenge

The mill had difficulty controlling the washing line manually due to large variations in pulp dirtiness. They wanted to improve the washing efficiency to improve pulp cleanliness and liquor solids and to stabilize washing for more consistent operation. 
Solution

Performance optimization as a solution:
Results
  • Weak Black Liquor % Solids improved by 7.5%
  • Washer Discharge Pulp Cond decreased by 17%
  • Washer Filtrate Cond decreased by 12%
  • Variability reduction of 50%
Keywords Washing Line Optimizer, Automation, North America
Valmet Washing Line Optimizer

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.

Process performance services

Process performance services

Valmet Process Performance Services help you eliminate weaknesses and improve performance through process optimization and better controls.

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