1. Modeling of profitability increase of a deinking plant Harald Janisch

2. 2 Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant

3. Harald Janisch3 Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant

4. Harald Janisch4 Norske Skog Bruck Employees (31.12.07) : 505 LWC and MWCNewsprintQuality 645530Width (cm) PM 4PM 3Machines 42 – 49 g/m²Grades51 – 90 g/m² 130.000 t/aProduction capacity280.000 t/a DIP 1Pulp linesDIP 2 PGWWood linePGW

5. Harald Janisch5 Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant

6. Harald Janisch6 Goals of the diploma thesis ▪ Creating of a complete fiber and water balance of the whole paper mill ▪ Mill balance in FlowMac ▪ Modeling of profitability increase on the DIP 1

7. Harald Janisch7 Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant

8. Harald Janisch8 Mill balance in FlowMac

9. Harald Janisch9 Modeling DIP 1 – pulping and HD cleaning

10. Harald Janisch10 Modeling DIP 1 – screening

11. Harald Janisch11 Modeling DIP 1 – flotation

12. Harald Janisch12 Modeling DIP 1 – thickening

13. Harald Janisch13 Modeling DIP 1 – pulp storage

14. Harald Janisch14 Modeling DIP 1 – filtrate storage

15. Harald Janisch15 Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant

16. Harald Janisch16 Profitability increase DIP 1 Background ▪ Increase capacity on PM 3 ▪ Increase share of recovered fiber on PM 3 ▪ Save energy costs on PGW

17. Harald Janisch17 Profitability increase DIP 1 Goals ▪ Finding the main bottlenecks on DIP 1 ▪ Modeling of profitability increase on DIP 1 ▪ Modeling of capacity increase on DIP 1 –Increase capacity from 270 t/d to 300 t/d

18. Harald Janisch18 Thickening DIP 1 – process old

19. Harald Janisch19 Thickening DIP 1 – new thickener 70 t/d

20. Harald Janisch20 Thickening DIP 1 – new disc filter 90 t/d

21. Harald Janisch21 Thickening DIP 1 – new disc filter 150 t/d

22. Harald Janisch22 Volume flows DIP 1 Reject Recovered paper PulpingHD CleaningScreeningFlotationThickening White water PM 3 Pulp to PM 3

23. Harald Janisch23 Profitability increase DIP 1 Improved filtrate consistency FiltrateFiltrate back to pulping Consistency [%] Volume flow [m³/d] Fiber flow [t/d] Process now0,45769034,6 Process with new thickener 70 t/d0,24685015,9 Process with new disc filter 90 t/d0,23679015,2 Process with new disc filter 150 t/d0,20665013,6

24. Harald Janisch24 Modeling capacity increase DIP 1 Summary: ▪ A complete balance for fiber, water and temperature was built for the whole mill. ▪ First analysis for optimization on DIP 1 – 8 hours modeling work for different scenarios to increase profitability on DIP 1. –20 minutes for the management to understand the problem and decide to do the investment.

25. Thank you for your attention! harald.janisch@norskeskog.com