Transcript Slide 1
Modeling of profitability increase of a deinking plant Harald Janisch Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant 2 Harald Janisch 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 Janisch Norske Skog Bruck Machines PM 3 PM 4 Width (cm) 530 645 Quality Newsprint LWC and MWC Grades 42 – 49 g/m² 51 – 90 g/m² Production capacity 130.000 t/a 280.000 t/a Pulp lines DIP 1 DIP 2 Wood line PGW PGW Employees (31.12.07): 4 Harald Janisch 505 Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant 5 Harald Janisch 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 6 Harald Janisch Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant 7 Harald Janisch Mill balance in FlowMac 8 Harald Janisch Modeling DIP 1 – pulping and HD cleaning 9 Harald Janisch Modeling DIP 1 – screening 10 Harald Janisch Modeling DIP 1 – flotation 11 Harald Janisch Modeling DIP 1 – thickening 12 Harald Janisch Modeling DIP 1 – pulp storage 13 Harald Janisch Modeling DIP 1 – filtrate storage 14 Harald Janisch Agenda ▪ Introduction of Norske Skog Bruck ▪ Goals of the diploma thesis ▪ Mill balance in FlowMac ▪ Modeling of profitability increase of a deinking plant 15 Harald Janisch Profitability increase DIP 1 Background ▪ Increase capacity on PM 3 ▪ Increase share of recovered fiber on PM 3 ▪ Save energy costs on PGW 16 Harald Janisch 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 17 Harald Janisch Thickening DIP 1 – process old 18 Harald Janisch Thickening DIP 1 – new thickener 70 t/d 19 Harald Janisch Thickening DIP 1 – new disc filter 90 t/d 20 Harald Janisch Thickening DIP 1 – new disc filter 150 t/d 21 Harald Janisch Volume flows DIP 1 White water PM 3 White water PM 3 Recovered paper Pulping HD Cleaning Reject 22 Harald Janisch Screening Reject Flotation Reject Thickening Reject Pulp to PM 3 Profitability increase DIP 1 Improved filtrate consistency Filtrate 23 Filtrate back to pulping Consistency Volume flow Fiber flow [%] [m³/d] [t/d] Process now 0,45 7690 34,6 Process with new thickener 70 t/d 0,24 6850 15,9 Process with new disc filter 90 t/d 0,23 6790 15,2 Process with new disc filter 150 t/d 0,20 6650 13,6 Harald Janisch 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. 24 Harald Janisch Thank you for your attention! [email protected]