18 ANDRITZ
Environmental mission
Pulp Paper & Logistics
the Schwedt mill – speaks frankly about the mill’s original screening plant in DIP1. “We needed a separate machine operator just for this tailing screen to move and re-adjust the levers again and again in order to avoid excessive losses,” says Stockfisch. Leipa had tried for some time
to find a solution to continuing problems in its screening plant – above all the strikingly high fibre losses – and to determine the right settings for the tailing screen. It was clear to Leipa that
a rebuild of the DIP1 coarse and fine screening plants was needed to reduce pulp losses and improve pulp quality, and that energy savings would also have to be one of the targets. “We had to make the project
pay for itself as well, and that is not possible simply by increasing the yield,” Stockfisch explains.
Building on an existing track record Leipa at Schwedt already had a successful track record in rebuild projects with Andritz with a DIP1 screw press project in 2013, which then halved the energy consumption of the unit. In the case of the screening
L
eipa, located at Schwedt an der Oder in the German state of Brandenburg,
is continuing a mission for environmental protection: each individual process step in the production lines must make a
September/October 2018
In Germany, paper maker Leipa has been reducing its energy consumption as part of a rebuild of its screening plants. PPL reports
positive contribution at the mill. Andritz took this mission on board during the rebuild of the screening plant in DIP1.
Sebastian Stockfisch – head of the two deinking plants and the effluent treatment system for Leipa Georg Leinfelder GmbH at
plant rebuild, Andritz suggested a consistent technological solution to Leipa. In addition to replacing the inadequate tailing screen with a new ModuScreen T4C, the two screens in the first and second stages of preliminary screening were to be fitted with the latest slotted screen baskets and rotors from Andritz. Also added to the scope of supply were a new standpipe and a feed pump to the final stage as well as a new AhlCleaner RB300HD4 high-consistency cleaner to protect the new
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