ANDRITZ
INDUSTRY NEWS
The heat is on… and it’s fossil-free
T 8
he municipality of Karlstad in Sweden has a long history of generating its own electricity and district heating. It also has a number of firsts under its belt: the first city in Sweden to have district heating and the first city with a biomass-fueled Combined Heat and Power plant (CHP), which was fed by residue from a nearby sawmill as early as 1948.
8 Summer 2016
More recently, in the 1970s and 1980s, oil was the fuel of choice for Karlstad’s boilers, mainly due to lower prices. However, corresponding with relocation to a new site in Hedvägen on the outskirts of the city in 1986, a move was made to waste-to-energy production. Following that in 1992, a biomass CHP plant (Heden 2) was started up.
The decision was made by Karlstads Energi and the local municipality in 2012 to go with completely fossil-free fuels in the total production mix for district heating, generating power and steam using local biomass. The company now supplies electricity to the national grid, and most importantly, district heating to the municipality that is totally free of fossil fuels.
Andritz was chosen as the main technology supplier for Karlstads Energi’s latest project, Heden 3. The project includes a Bubbling Fluidized Bed (BFB) boiler capable of generating 127 t/h of steam equal to 88 MW of thermal power. After all, the last thing the 89,000 people in the municipality of Karlstad need during a severe cold snap is to run out of heat. Their new
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