Pre-engineering project smooths the way
Voith rebuilds Renkum PM 2
2015-12-08 - Papermaker Parenco will have its former graphic paper machine at its paper mill in Renkum, the Netherlands, rebuilt by Voith, which will enable it to produce 385,000 metric tons of packaging paper per year. This was previously announced in June 2015. The grade conversion will be carried out on the PM 2, which was decommissioned in 2009. A pre-engineering project conducted by Voith for Parenco preceded the decision to go ahead with the rebuild.
Conversion of a decommissioned system The decommissioned machine and three existing buildings had to be analyzed to determine whether they could be re-used for the Renkum PM 2 project. This challenging study had to pinpoint what needed to be rebuilt or modified and which components had to be completely renewed. Moreover, the fact that the PM 2 was connected to the same energy, stock and water systems as the PM 1 on the same site had to be taken into account. As the PM 1 will continue to produce graphic papers, all these loops will have to be separate to convert the PM 2. “A complex job,” explains Thomas Elenz. However, it is well worth the effort involved, as a rebuild is much cheaper than a new build on a greenfield site.
Outcomes of the pre-engineering project For the new production line on the grounds of the paper mill a recovered paper store will be established, and the existing buildings will continue to be used. The coarse screening will take place in the old TMP building where TMP (thermo-mechanical pulp) used to be produced. From here, the stock will be pumped through pipes to fractioning and fine screening in a hall previously used for the de-inking process. Most of the machines and equipment for the stock preparation can be re-used.
In May, two months after completion of the pre-engineering project, Voith received the follow-on order from Parenco for the rebuild and turnkey handover of the production line in late summer 2016. The turnkey project contains a Process Line Package incorporating construction works. This means that the customer has just one partner and far fewer interfaces to liaise with, ensuring fast project turnaround and adherence to the agreed costs.
The overall order includes the supply of new machines such as a large IntensaPulper IP and numerous IntegraScreen IS screening machines for stock preparation, a MasterJet Pro two-layer headbox, a NipcoFlex press, a SpeedFlow sizing unit, a new CombiDuoRun after-dryer section and all auxiliary equipment such as electrical installations and a process control system in a new joint control room, a complete starch preparation unit, pumps and piping. Voith was also commissioned to supply the following services: the dismantling of pipes, electrical cables and machines, basic and detailed engineering and of course the complete assembly, as well as training the new personnel for a successful start-up.