The upgrade supports the mill's continued efforts to increase the use of refuse-derived fuel (RDF) while improving boiler availability and operational performance.
Nov. 10, 2026 - Valmet has received an order from Stora Enso Narew Sp. z o.o. to modernize the circulating fluidized bed (CFB) boiler at the Ostroleka pulp and paper mill in Poland. The upgrade will improve boiler availability, reduce unplanned downtime, and lower operating costs.
The value of the order will not be disclosed.
The order reflects the long-standing cooperation between Valmet and Stora Enso at the Ostroleka mill. Since delivering the original CFB boiler in 2010, Valmet has supported the mill through lifecycle services and modernization projects that help maintain reliable and cost-effective operation. This latest investment supports the mill's continued efforts to increase the use of refuse-derived fuel (RDF) while improving boiler availability and operational performance.
Stora Enso's Ostroleka Mill is a combined pulp, paper, containerboard and corrugated packaging solutions production site. The mill produces recycled fibre-based pulp, paper and containerboard, along with corrugated packaging for food and non-food applications.
Valmet's delivery will include the replacement of the boiler bottom, an upgraded coarse material removal system, and a new bottom ash sieving system. The delivery also includes spare parts for two years to support a smooth start-up and long-term operational performance.
"As the boiler's use of refuse-derived fuel has increased, new operational needs have emerged in the bottom ash area," explained Przemys?aw Nied?wiecki, Engineering and Investments Manager, Stora Enso Narew. "This upgrade is expected to improve boiler availability, reduce maintenance shutdowns, and lower operating costs through more efficient material handling and reduced sand consumption."
The upgraded equipment is scheduled to be installed during the mill's annual shutdown in June-July 2027.
Valmet is a global technology leader in serving process industries. The company works with customers throughout the lifecycle, delivering cutting-edge technologies and services, as well as mission-critical automation and flow control solutions. Valmet is backed by more than 225 years of industrial experience and a global team of 19,400 professionals.
SOURCE: Valmet