The pilot plant processes 16 000 tonnes of biowaste per year. The resulting biofuel is used in the mill's power boiler and to heat the nearby town of Heinola, with about 20 000 inhabitants. Heinola Mill has been providing district heat to the city and its residents since the 1980s.
“The treatment of bio sludge produced at our mill offers opportunities for a bio-based circular economy, which supports Stora Enso's environmental goals. With this technology, we can save both the environment and costs”, says Mikael Sillfors, Development Manager at Heinola Mill.
With the pilot plant, Stora Enso is investigating how much CO2 emissions can be reduced with the treatment of bio sludge. Stora Enso's goal is to reduce the use of fossil fuels and get as close as possible to zero levels of CO2 emissions by technically and commercially feasible means. A high proportion of biomass is already used in the internal energy production at most of our mills. In 2018, the share of biomass in energy generation at our mill sites was 81%.
Heinola pilot plant.
All images: C-Green Tecnhology AB.