Paper Technology International 2024 - Journal - Page 131
PAPERTECHNOLOGYINTERNATIONAL
S
Sustainable paper production
makes Schoellershammer PM 6 the
benchmark for energy e昀케ciency
Falk Albrecht, Head of Process Technology, Voith Paper
Naomi Keitel, Manager Global Communications, Voith Paper
Andreas Schaefer, Expert R&D, Voith Paper
Torben Schlieckau, Vice President Air Systems, Voith Paper
Philip Schnellinger, Process Technology Manager Paper, Voith Paper
INTRODUCTION:
Today, it is more important than ever for paper manufacturers to produce sustainably in order to minimize environmental impact,
meet customer requirements, comply with legal requirements and increase resource ef昀椀ciency. Sustainable processes not only contribute to
long-term business success, but also support the entire industry on the path to sustainability. The example of the Schoellershammer paper
mill in Düren shows how these goals can be achieved with appropriate solutions from Voith.
Figure 1: Schoellershammer PM6
The impetus for the new machine goes back several years.
At that time, Schoellershammer wanted to expand its range of
packaging materials. In order to be able to produce ef昀椀ciently here,
the company decided to invest in another paper machine, the PM 6.
It was to produce packaging papers in the basis weight range of 80
to 120 g/m2 to complement the PM 5. The goal was to achieve an
annual production capacity of 535,000 tons of packaging paper with
both machines.
Schoellershammer chose Voith as its partner for this project.
Above all, two reasons spoke in favor of the global technology
company: First, as a leading full-line supplier, Voith was able to
optimally coordinate and seamlessly integrate all components of the
entire production process – the paper machine, stock preparation
and sludge and rejects system. Second, the Voith solutions offered
excellent possibilities to meet a central requirement of the paper
manufacturer: high energy ef昀椀ciency. The goal was to set new
standards in the packaging paper sector in Germany.
To achieve this goal, Schoellershammer relied on the
BlueLine stock preparation system and XcelLine paper machine
from Voith, which were successfully commissioned in December
2016. The solutions are optimally coordinated and have been
continuously optimized so that the current annual consumption
昀椀gures of PM 6 are impressive. For each ton of 昀椀nished paper
produced, only about 1.27 tons of steam are required at a speed
of 1,200 meters per minute. Electricity consumption totals only 288
kWh per ton of saleable paper produced, with stock preparation
requiring only around 60 kWh/t.
These are impressive 昀椀gures when you consider that the
speci昀椀c energy consumption per ton in many paper mills, especially
in stock preparation, is signi昀椀cantly higher. The electricity required to
produce one ton of paper averages 530 kWh/t, with recovered paper
stock preparation causing a speci昀椀c electricity requirement of 260
kWh/t. In the production line, three areas in particular are the focus
of resource savings: the disc 昀椀lter system, the press concept and the
dryer section hood with heat recovery.
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