Norske Skog Skogn replaced old consistency sensors with Valmet SP

Norske Skog's Skogn mill in Norway manufactures newsprint paper with the total production at the mill's 3 paper machines being 520 000 t/a. PM2, where the mill installed new 4th generation Valmet Blade Consistency Measurement, produces 150 000 t/a using a DIP content of 20%.

Stable and accurate blade consistency measurement

We replaced 2 rotaries with Valmet SP since there were some problems to access repair kits. The Valmet SP on TMP has shown a very stable and accurate measurement, we have had no problems with the new blades, since installation in February 2019.

Instrumentation manager

Summary

Location Skogn, Norway
Challenge

TMP to blend chest

  • TMP pulp, measuring and controlling pulp to the mixing chest before PM2
  • Operating range 2 – 4% Cs
  • Flow velocity 0.8 – 1.2 m/s
  • Vertical installation in 350mm pipe

RCFS to mixing chest

  • 100% DIP pulp, measuring and controlling the pulp before it enters the mixing chest, before PM2
  • Operating range 2 – 4% Cs
  • Flow velocity 0.6 – 2.2 m/s
  • Vertical installation in a 200mm pipe
Solution

4th generation Valmet Blade Consistency Measurement with RL sensing element
Results Stable and accurate measurement with high correlation
Keywords Consistency, Automation, Europe

Norske-Skog-Skogn-SP-correlation-TMP.PNG

Laboratory correlation of Valmet Blade Consistency Measurement on TMP

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