Ekmandagarna 2019 Pecha Kucha
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 www.menti.com och ange koden 44 01 20 Fördela 100 poäng på de tio presentationerna, med lika vikt på Utförande och Innehåll.
1. Predictive modelling of CTMP handsheet properties Daniel Ekbåge, StoraEnso/Karlstad Universitet
Predictive modelling of CTMP handsheet properties Daniel Ekbåge, StoraEnso/Karlstad Universitet
Daniel Ekbåge Karlstad University and Stora Enso Supervisors at KAU: Lars Nilsson & Helena Håkansson
Example of board composition Coating Kraft chemical pulp CTMP Kraft chemical pulp
HEAT + Sodium hydroxide Sodium bisulphite Chelating agent HEAT + RETENTION TIME REFINER
Example of sample position for online pulp analyzer Fiber length Freeness measurement Fiber measurements (length, width, shives, ) Camera Sample
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
z-strength (kpa) ~ 90 hours xxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x = theoretical sample from Pulp analyzer
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:0.5-1.5 mm FT+ Fibril area (>0,2mm) FT+Fibril perimeter:1.5-3.0 mm FT+ Coarseness incl. fines FT+Fibril perimeter:3.0-4.5 mm FT+ Fines length (<0,2mm) FT+Fibril perimeter:4.5-7.5 mm FT+FinesP, 0.1-0.2mm 50-100µm, Length share Calculated Coarseness on fibers >0.2mm FT+FinesS, <0,1mm<50µm, Length share FT+ Fiber width (>0,2mm) FT+FinesP, 0.1-0.2mm 50-100µm, Volume share FT+ Fibril perimeter (>0,2mm) FT+FinesS, <0.1mm <50µm, Volume share FT+Crill Quota MID/IR FT+FinesP, 0.1-0.2mm 50-100µm, Arithmetic FT+Crill Quota UV/IR FT+FinesS, <0.1mm <50µm, Arithmetic FT+Fraction 0.2-0.5 mm FT+Width: 0.2-0.5 mm FT+Fraction 0.5-1.5 mm FT+Width:0.5-1.5 mm FT+Fraction 1.5-3.0 mm FT+Width:1.5-3.0 mm FT+Fraction 3.0-4.5 mm FT+Width: 3.0-4.5 mm FT+Fraction 4.5-7.5 mm FT+Width: 4.5-7.5 mm FT+Mean kink angle FT+Shape: 0.2-0.5 mm FT+Mean kink index FT+Shape: 0.5-1.5 mm FT+Mean segment length FT+Shape:1.5-3.0 mm FT+Number of kinks per fiber FT+Shape: 3.0-4.5 mm FT+Number of kinks per mm FT+Shape:4.5-7.5 mm FT+Number of large kinks per fiber FT+Fibril area:0.2-0.5mm FT+Number of large kinks per mm FT+Fibril area:0.5-1.5mm Million fibers(>0.2mm) per gram FT+Fibril area:1.5-3.0mm FT+Fibril area 3.0-4.5mm FT+Fibril area 4.5-7.5mm
3D-illustration from ABB/L&W
UV Light IR Light Images from ABB/L&W
v Predicting z-strength
k-fold cross-validation for predictive performance Test data Training data Calculation 1 Calculation 2 Calculation 3 Calculation 4
Results for Accept pulp Fiber morphology Freeness Correlation z-strength
Results for Accept pulp Estimation model Cross-validated model R 2 = 0.79 R 2 = 0.67 Fibril perimeter 1.5-3.0 mm Fibril perimeter 3.0-4.5 mm CSF Crill quota UV/IR Mean kink angle Fibril perimeter 1.5-3.0 mm Fibril perimeter 3.0-4.5 mm Crill quota UV/IR Mean kink angle
Results for Primary refined pulp Correlation between process data, fiber morphology and z-strength Process Data Fiber morphology Correlation z-strength
Results for Primary refined pulp Correlation between process data and fiber morphology Process Data Correlation Fiber morphology Crill
Conclusions Crill Fibril perimeter Mean kink angle Fiber data Process data
I would like to acknowledge all contributors to my research. Thank you for your attention. Contact information: Daniel Ekbåge daniel.ekbage@storaenso.com