MM Group orders continuous cooking plant from ANDRITZ for sustainability upgrade

LoSolids technology to cut energy use and CO₂ emissions at Kwidzyn pulp and paper mill.

  www.andritz.com

MM Group has strengthened the sustainability and energy efficiency of its integrated pulp and paper mill in Kwidzyn, Poland, by modernizing its cooking process with advanced technology from ANDRITZ. The upgrade replaces a traditional batch digester system with a LoSolids continuous cooking plant, enabling more efficient pulp production while increasing operational flexibility.

The new solution allows the mill to switch seamlessly between softwood and hardwood pulp grades, supporting a broader product portfolio while reducing overall energy consumption and CO₂ emissions. This flexibility is particularly valuable for MM Kwidzyn, one of Europe’s leading producers of premium virgin fibre cartonboard for pharmaceutical and luxury packaging, as well as packaging kraft papers, uncoated fine papers, and pulp.

“By adopting this advanced technology, we can considerably lower our energy consumption while gaining the flexibility to process both softwood and hardwood,” says Filip Drofiak, Chairman of the Board of MM Kwidzyn. “These improvements support our commitment to sustainability and strengthen our competitive edge and energy independence.”

The ANDRITZ scope includes a single-vessel digester designed to deliver homogeneous cooking conditions and stable process control across different wood species. To further enhance pulp quality and process efficiency, the system features a Turbofeed chip feeding system combined with a Diamondback chip bin, which maximizes chip pre-steaming and ensures consistent chip flow into the digester.

Energy efficiency is further improved through the integration of a vapor reboiler, which enhances heat recovery from the cooking process while minimizing odorous gas emissions. Together, these elements contribute to lower operating costs, improved environmental performance, and a more stable production process.

The transition from batch to continuous cooking represents a significant step in MM Kwidzyn’s long-term modernization strategy. By combining process efficiency, raw material flexibility, and reduced environmental impact, the upgraded cooking plant positions the mill for sustainable growth and resilient operations in an increasingly demanding market.

www.andritz.com