More CTMP from SCA - Paper Technology International 2023 - Paper Technology International 2023 - Flipbook - Page 61

More CTMP from SCA - Paper Technology International 2023

PAPERTECHNOLOGYINTERNATIONAL More CTMP from SCA - Paper Technology International 2023
Safety
Health and safety are fundamental to SCA’s operations.
SCA has a zero-accident vision, and safety in the workplace is
highly prioritized. “Double block and bleed” have been installed,
meaning that two valves are used to ensure that it is possible
to drain completely in all stages during maintenance work. In
addition, light beams are installed, which means that the baling
line is completely secured if someone gets too close.
Suppliers
The main supplier during the project has been Valmet
(refiners, dewatering equipment, drying, baling and wrapping), as
well as process simulation for the training of operators.
Other suppliers have been Andritz, delivering disc
filters, and ABB, delivering motors, control systems, and quality
monitoring during the entire process.
Figure 9: Twin roll presses.
The implementation time was an impressive 22 months
(largely thanks to access of local expertise, as many contractors
were from nearby areas). “To construct a new plant in a facility that
is being shut down was naturally a challenge; as well as maintaining
competence in a transition period, and generally conducting project
activities during the covid pandemic, the invasion of Ukraine has of
course also brought extra challenges”, summarizes Anders.
Energy
“At Ortviken there are five biofuel boilers, where internally
generated bark, bio sludge from the wastewater plant, bark from
other SCA units, and wood pellets are burned; there is also a turbine
with an output of 16 MW. In the manufacture of bleached CTMP
pulp, steam is also produced which is reused”, explains Maria. “The
flash dryers have been equipped with a new solution, to preheat air
to the dryers with a heat exchanger for increased energy efficiency;
waste heat from the CTMP facility is used for water heating for other
activities at the Ortviken site. SCA also leases premises at Ortviken
to the company Renewcell (textile recycling). Furthermore, Ortviken
supplies district heating to Sundsvall´s municipality, corresponding to
the heating of 10,000 households”, continues Maria.
Figure 11: Inside control room.
Figure 10: Baling line.
SCA More – the new CTMP portfolio
So, to summarise, Stefan concludes: “We are now
taking a bold leap forward: Offering the broadest CTMP
portfolio in the market, with an unseen opportunity to tailor
solutions.
With unique access to well-managed FSC and
PEFC-certified forests, together with a proprietary supply
of fossil-free green energy, we can deliver outstanding
environmental performance. In our processes, we always
make use of the entire tree from our forests and have
unlimited access to versatile raw materials, such as
birch. As a knowledgeable and committed partner, we’re
determined to improve our customers’ performance,
making more for less and thus helping our partners do
even better business. Which is why we named our new
CTMP portfolio SCA More!”.
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