Defibrator™ system training MDF machinery © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Defibrator™ system © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Layout © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Layout © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Defibrator system Components • • • • • • • • • • • Surge bin SBRA 2900/40 Screw feeder ADI 500 Preheater PVA 1600/11 Preheater discharge screw Defibrator feeder DFA 500L Defibrator EVO 56 Auxiliary systems Refiner segments Blow valve Blow line DN 125/150 Diverter valve DN 125 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Defibrator system topics • • • • • • • • • • • Surge bin Screw feeder Preheater Side-feed unit Refiner Refiner auxiliaries Refiner segments Blow valve Blow line Diverter valve Sealing water © Metso Corporation 2007 2007-03-07 » Metso Panelboard / Defibrator training 2007 Surge bin © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Surge bin functions Presteaming • • Reduced evaporation in the dryer with presteaming Temperature equalisation - • Moisture equalisation - • More uniform fibre quality Natural rosin reduction - Thaws chips in cold climates More uniform fibre quality Screw feeder squeeze-out water » © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Surge bin functions Level control • Raw material buffer - • Constant residence time - • More uniform fibre quality More uniform moisture after the dryer Constant level and non-uniform residence time Better utilisation of equipment before surge bin - 10 Allows for short stops before surge bin Lower average load Improved cleaning of raw material » © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Segment cost over time 18 16 14 Costs per tonne ($) 12 Total 10 Energy Shutdown Segment 100 200 300 400 500 600 Segment running time (h) 63 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 700 800 900 000 Segment change 64 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Defibrator system topics • • • • • • • • • • • 65 Surge bin Screw feeder Preheater Side-feed unit Refiner Refiner auxiliaries Refiner segments Blow valve Blow line Diverter valve Sealing water © Metso Corporation 2007 2007-03-07 » Metso Panelboard / Defibrator training 2007 Blow valve 66 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Drain valve and blow valve 67 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Blow line 68 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Defibrator system topics • • • • • • • • • • • 69 Surge bin Screw feeder Preheater Side-feed unit Refiner Refiner auxiliaries Refiner segments Blow valve Blow line Diverter valve Sealing water © Metso Corporation 2007 2007-03-07 » Metso Panelboard / Defibrator training 2007 Diverter valve Compact ball valve 70 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Diverter valve principle Normal operation to cyclone Heating dryer pipe for 20 s Cleaning cyclone pipe for 20 s 71 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Switching from cyclone to dryer Normal operation to dryer Defibrator system topics • • • • • • • • • • • 72 Surge bin Screw feeder Preheater Side-feed unit Refiner Refiner auxiliaries Refiner segments Blow valve Blow line Diverter valve Sealing water » © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Sealing water system 73 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Sealing water system Pump system • • • • Preheater discharge screw Agitator Defibrator feeder Mechanical seal flush water - Same or parallel system Advantage to steam Load on dryer » PI 74 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Sealing water system Flow sheet (principal) PI FIA PI FIA PI PI PS 75 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 FIA PI FIA Sealing water system Sealing function • Systems - • Adjustment - • – 10 l/min per packing box l/min to mechanical seal Inlet pressure 13 bar(e) Counterpressure approx bar above process pressure Alarm 76 Preheater discharge screw Agitator Defibrator feeder Mechanical seal (flush water) – l/min alarm bar above preheater pressure » © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Process control system (HMI) Defibrator area 77 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 ... / Defibrator training 2007 Defibrator system © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Layout © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator. .. Panelboard / Defibrator training 2007 Defibrator system Components • • • • • • • • • • • Surge bin SBRA 2900/40 Screw feeder ADI 500 Preheater PVA 1600/11 Preheater discharge screw Defibrator feeder... 500L Defibrator EVO 56 Auxiliary systems Refiner segments Blow valve Blow line DN 125/150 Diverter valve DN 125 © Metso Corporation 2007 2007-03-07 Metso Panelboard / Defibrator training 2007 Defibrator