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Journal articles
Predictive advisory solutions for chemistry management, control, and optimization, TAPPI Journal March 2025
ABSTRACT: Process runnability and end-product quality in paper and board making are often connected to chemistry. Typically, monitoring of the chemistry status is based on a few laboratory measurements and a limited number of online specific chemistry-related measurements. Therefore, mill personnel do not have real-time transparency of the chemistry related phenomena, which can cause production instability, including deposition, higher chemical consumption, quality issues in the end-product and runnability problems. Machine learning techniques have been used to establish soft sensor models and to detect abnormalities. Furthermore, these soft sensors prove to be most useful when combined with expert-driven interpretation. This study is aimed at utilizing a hybrid solution comprising chemistry and physics models and machine learning models for stabilizing chemistry-related processes in paper and board production. The principal idea is to combine chemistry/physics models and machine learning models in a fashion close to white box modeling. A cornerstone in the approach is to formulate explanations of the findings from the models; that is, to explain in plain text what the findings mean and how operational changes can mitigate the identified risks. The approach has been demonstrated for several different applications, including deposit control in the wet end, both raw water treatment and usage, and wastewater treatment. This approach provides mill personnel with knowledge of identified phenomena and recommendations on how to stabilize chemistry-related processes. Instead of using close to black box machine learning models, a hybrid solution including chemistry/physics models can enhance the performance of artificial intelligence (AI) deployed systems. A successful way of gaining the trust from mill personnel is by creating a plain text explanation of the findings from the hybrid models. The correlation between the likelihood of a phenomena and disturbance and the explanations are derived and validated by application and chemistry and physics experts.
Technology Solutions to Increase Converters Productivity, 2001 Engineering / Finishing & Converting Conference Proceedings
Technology Solutions to Increase Converters Productivity, 2001 Engineering / Finishing & Converting Conference Proceedings
Water Induced Bearing Fatigue in Paper Machine Applications: Monitoring and Solutions, 1997 Engineering Conference Proceedings
Water Induced Bearing Fatigue in Paper Machine Applications: Monitoring and Solutions, 1997 Engineering Conference Proceedings
Finish Foils, Wrapping Foils, Edge Bandings, Forward-Looking Surface Solutions, 1997 Asian Laminates Symposium Proceedings
Finish Foils, Wrapping Foils, Edge Bandings, Forward-Looking Surface Solutions, 1997 Asian Laminates Symposium Proceedings
Surface Sizing with Starch Solutions at High Solids Contents, 2002 Metered Size Press Forum
Surface Sizing with Starch Solutions at High Solids Contents, 2002 Metered Size Press Forum
Filler Retention - Recent Challenges and Possible Solutions, 1999 Papermakers Conference Proceedings
Filler Retention - Recent Challenges and Possible Solutions, 1999 Papermakers Conference Proceedings
Magazine articles
Improving mill productivity with advanced wear protection so
Improving mill productivity with advanced wear protection solutions, Solutions!, Online Exclusives, April 2005, Vol. 88(4)
Journal articles
INSIDE THE NUMBERS : THE FORECAST FOR INDIA: CONTINUED GROWTH IN PULP AND PAPER, SOLUTIONS! January 2005 [05JANSO88.pdf]
Inside the numbers, Solutions!, January 2005, Vol. 88(1) (64KB)
Journal articles
CORPORATE ISSUES: WHERE DO MID-SIZED COMPANIES FIGURE IN THE EUROPEAN MARKET?, December 2001 SOLUTIONS! [01DECSO29.pdf]
Where do mid-sized companies figure in the European market?, Solutions!, December 2001, Vol. 84(12)
Magazine articles
Process Safety Management And How It Is Relevant To Pulp And Paper, Solutions!, September 2005, Vol. 88(9) (48 KB)
Process Safety Management And How It Is Relevant To Pulp And Paper, Solutions!, September 2005, Vol. 88(9) (48 KB)