Dedusting plant for CLT production STORA ENSO

Customer: STORA ENSO
Industry: Wood
Location: Gruvön
Country: Sweden
Technical data: JDR - 190.000 m³/h
Included services: Coolers and systems for heat recovery, Fans, Pneumatic conveying, Rotary valves, Vertical bag filter

Project details

For the new CLT (Cross Laminated Timber) production plant of Stora Enso in Sweden, LHS supplied a turnkey solution for the extraction and filtration of the chips and dust produced. This plant was put into operation in September 2018.


  • Suction pipe system
  • Filter
  • Rotary valves
  • Fans
  • Return air system
  • HD Funding

Operating principle

Chips and dust are extracted from the individual production machines via three fan groups. These are separated in the filter, transferred via rotary valves to a high-pressure conveying system (HP system) and conveyed to a silo. The air cleaned in the filter is returned to the production hall via a closely branched pipe system, thereby increasing energy efficiency. The high negative pressures at the upstream production machines made hydraulic balancing complex and the use of stronger fans necessary.