Customer case:

Stora Enso Sunila Mill - LignoBoost plant for high quality kraft lignin production

Jan 2, 2019

Stora Enso’s Sunila Mill produces kraft lignin with Valmet’s LignoBoost™ technology. The project started in 2013 and the plant was handed over to Stora Enso in 2015. In 2018, Stora Enso launched their dry lignin product, Lineo™ by Stora Enso, which is an excellent alternative to fossil-based raw materials in a wide range of applications.

I was impressed by the professionalism of Valmet’s project team. Even though Valmet had already built a similar industrial plant in the past, both parties knew from the beginning that this project would have a strong R&D nature.
Jarmo Rinne, Development Director at the Sunila Mill


Location Sunila Mill, in Kotka Finland
Customer challenge

Develop and produce new sustainable biomaterials

  • Valmet LignoBoost plantwith annual production capacity of 50,000 tonnes
  • Lignin drying plant – to produce high dry content lignin
  • Automated big bag filling system (not delivered by Valmet)
  • New value adding product for the Sunila Mill - Non-toxic, renewable material that can replace materials made from fossil fuels
  • Production of high quality kraft lignin – LineoTM by Stora Enso – recognized as the "Biobased product of the year 2018" and "Innovative Product Award 2018" by IChemE
  • Reduced CO2 emission in lime kiln when using lignin as fuel
  • Offloading the recovery boiler
Keywords Lignin, Chemical pulping, Stora Enso