Pöyry acted as the main engineering consultant for Mondi's new lightweight recycled paper machine ECO7, located in Swiecie, Poland.
Pöyry's involvement started with a paper mill project feasibility analysis, which was carried out in 2006. The study mapped out the mill site and department layouts, as well as the main process solutions and technical descriptions. The work continued to pre-engineering, which was finalised in 2007.
In July 2007, Pöyry was engaged to produce the detail engineering for project implementation.
The project included a new recycled fibre plant with waste paper storage, new automatic warehouse, new reject handling system including biological sludge treatment, reel transportation system to the corrugated plant and all necessary connections to the existing mill's equipment and facilities (BOP) related to the new departments.
Pöyry's scope encompassed the complete mill engineering, site services, commissioning and start-up services.
In the peak period during commissioning and start-up, Pöyry's site team consisted of some 20 specialists. During the erection phase, Pöyry's engineering tools for each discipline were placed on site, enabling the necessary changes in engineering documents to be updated and distributed directly and effectively by the erection team.
Pöyry's mill engineering documents, as well as those from suppliers, were uploaded into the DocHotel system, which guaranteed that the latest version of any document was available and easy to distribute to all parties.
The raw material base is 100 per cent recycled fibre. The paper machine is designed to produce 470,000 t/a testliner and corrugated medium at a design speed of 1,800 m/min, making it one of the world's fastest containerboard machines.