Modeling of profitability increase of a deinking plant Harald Janisch

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

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

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

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

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

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

Harald Janisch8 Mill balance in FlowMac

Harald Janisch9 Modeling DIP 1 – pulping and HD cleaning

Harald Janisch10 Modeling DIP 1 – screening

Harald Janisch11 Modeling DIP 1 – flotation

Harald Janisch12 Modeling DIP 1 – thickening

Harald Janisch13 Modeling DIP 1 – pulp storage

Harald Janisch14 Modeling DIP 1 – filtrate storage

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

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

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

Harald Janisch18 Thickening DIP 1 – process old

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

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

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

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

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

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.

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