INDUSTRY NEWS
ANDRITZ
Left to right: Johan Svartvik, Plant Manager; Markus Slotte, Andritz Sales Manager; and Johan Thelander, Project Manager for Karlstads Energi, inside the biomass boiler building.
to renewing and updating the equipment at our power plants,” Thelander said. “We have a cycle of about 22 years where we make a complete replacement. This is mostly due to the operating wear and tear on the equipment, but it also enables us to keep ahead of changes, for instance in climate or population growth, which will require more power and heat.”
Heden 3’s housing was designed in the shape of a wave to represent the ‘new wave of the bio-economy’.
Andritz BFB biomass boiler will ensure sufficient electricity and heat for years to come.
Committed to renewal Johan Thelander was Karlstads Energi’s Project Manager for Heden 3. “We are committed
According to Thelander, “We have a zero tolerance for not meeting the heat demand on the district heating grid at any given moment. That just does not happen. We make sure that we have options for whatever scenario is thrown at us”. Unfortunately, scenarios do come. In 2010, the region saw back-to-back Winters that pushed the plant hard. Thelander confirmed, “2010 was a dramatic year – two bad Winters in a row. We set a production record with big volumes during the very low temperatures. We suddenly became very busy”.
With unpredictable weather patterns, volatile fuel prices and ever-changing customer demands, the Heden 3
project had to be a winner in terms of its technology and performance. There were also rewards in the form of green electricity certificates, as well as lucrative rebates for reduced NOx emissions, which provided commercial benefits. Going fossil-free with the best environmental technology would produce economic, social, and environmental benefits. There is the added advantage that all the biomass fuels are locally sourced. Thelander explained, “We projected the income from the green certificates and we could
see a really good result, so in 2012 we conducted a feasibility study and started discussions with the Karlstad city council. We carried out the usual project risk analysis, held discussions with all parties involved, had a series of discussions with the authorities and managed to do all this in a relatively short time.
“When we got the decision approved, we spoke with a number of technology suppliers and looked at their various reference sites,” said Thelander. “I have to say that Andritz was the supplier that really seemed to ‘get it’ by really understanding our needs and what our requirements were, but it turned out there was some pioneering new technology needed to maximise the power plant’s efficiency to the desired level.”
Hannu Ylönen, Andritz Project Manager for Heden 3.
Pioneering technology According to Markus Slotte, Area Sales Manager for Andritz’s Power Boilers in Scandinavia, “During our discussions, it became clear to us that a high priority for Karlstads Energi was to increase the electricity-to-heat ratio from the plant to be able
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