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Britt-Marie Engström
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1 Ekmandagarna 2019 Pecha Kucha

2 Sundblads Pecha Kucha 20 bilder visas 20 sekunder var Bedömningskriterier Utförande (50%) Innehåll (50%) Ledamöter i Juryn 1. Birgitta Sundblad 2. Monica Ek 3. Anneli Petersson 4. Rickard Wadsborn 5. Publiken Gå efter sista presentationen in på och ange koden Fördela 100 poäng på de tio presentationerna, med lika vikt på Utförande och Innehåll.

3 1. Predictive modelling of CTMP handsheet properties Daniel Ekbåge, StoraEnso/Karlstad Universitet

4 Predictive modelling of CTMP handsheet properties Daniel Ekbåge, StoraEnso/Karlstad Universitet

5 Daniel Ekbåge Karlstad University and Stora Enso Supervisors at KAU: Lars Nilsson & Helena Håkansson

6 Example of board composition Coating Kraft chemical pulp CTMP Kraft chemical pulp

7 HEAT + Sodium hydroxide Sodium bisulphite Chelating agent HEAT + RETENTION TIME REFINER

8 Example of sample position for online pulp analyzer Fiber length Freeness measurement Fiber measurements (length, width, shives, ) Camera Sample

9 WOOD CHIPS CD REFINER FIBER ACCELERATOR v LATENCY CHEST PRIMARY REFINED PULP PROCESS DATA MEASUREMENTS FIBER MORPHOLOGY MEASUREMENTS REJECT REFINER PULP FROM PRIMARY REFINING PULP TANK SCREENING PULP TANK ACCEPT PULP FIBER MORPHOLOGY MEASUREMENTS

11 z-strength (kpa) ~ 90 hours xxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x = theoretical sample from Pulp analyzer

12 FORCE METAL BLOCK DOUBLE ADHESIVE TAPE BOARD SAMPLE

Fiber morphology variables from Fibertester Fiber morphology variables from Fibertester FT+ Mean length (>0,2mm) FT+Fibril perimeter:0.2-0.5 mm FT+ Fiber shape (>0,2mm) FT+Fibril perimeter:0.5-1.

13 Fiber morphology variables from Fibertester Fiber morphology variables from Fibertester FT+ Mean length (>0,2mm) FT+Fibril perimeter: mm FT+ Fiber shape (>0,2mm) FT+Fibril perimeter: mm FT+ Fibril area (>0,2mm) FT+Fibril perimeter: mm FT+ Coarseness incl. fines FT+Fibril perimeter: mm FT+ Fines length (<0,2mm) FT+Fibril perimeter: mm FT+FinesP, mm µm, Length share Calculated Coarseness on fibers >0.2mm FT+FinesS, <0,1mm<50µm, Length share FT+ Fiber width (>0,2mm) FT+FinesP, mm µm, Volume share FT+ Fibril perimeter (>0,2mm) FT+FinesS, <0.1mm <50µm, Volume share FT+Crill Quota MID/IR FT+FinesP, mm µm, Arithmetic FT+Crill Quota UV/IR FT+FinesS, <0.1mm <50µm, Arithmetic FT+Fraction mm FT+Width: mm FT+Fraction mm FT+Width: mm FT+Fraction mm FT+Width: mm FT+Fraction mm FT+Width: mm FT+Fraction mm FT+Width: mm FT+Mean kink angle FT+Shape: mm FT+Mean kink index FT+Shape: mm FT+Mean segment length FT+Shape: mm FT+Number of kinks per fiber FT+Shape: mm FT+Number of kinks per mm FT+Shape: mm FT+Number of large kinks per fiber FT+Fibril area: mm FT+Number of large kinks per mm FT+Fibril area: mm Million fibers(>0.2mm) per gram FT+Fibril area: mm FT+Fibril area mm FT+Fibril area mm

14 3D-illustration from ABB/L&W

15 UV Light IR Light Images from ABB/L&W

17 v Predicting z-strength

18 k-fold cross-validation for predictive performance Test data Training data Calculation 1 Calculation 2 Calculation 3 Calculation 4

19 Results for Accept pulp Fiber morphology Freeness Correlation z-strength

0-4.5 mm CSF Crill quota UV/IR Mean kink angle Fibril perimeter 1.

20 Results for Accept pulp Estimation model Cross-validated model R 2 = 0.79 R 2 = 0.67 Fibril perimeter mm Fibril perimeter mm CSF Crill quota UV/IR Mean kink angle Fibril perimeter mm Fibril perimeter mm Crill quota UV/IR Mean kink angle

21 Results for Primary refined pulp Correlation between process data, fiber morphology and z-strength Process Data Fiber morphology Correlation z-strength

22 Results for Primary refined pulp Correlation between process data and fiber morphology Process Data Correlation Fiber morphology Crill

23 Conclusions Crill Fibril perimeter Mean kink angle Fiber data Process data

24 I would like to acknowledge all contributors to my research. Thank you for your attention. Contact information: Daniel Ekbåge

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