Iggesund’s fossil-free papermill: The vision is within reach
Iggesund’s new recovery boiler has been fine-tuned to allow the paperboard mill to cover over 90 percent of its energy needs, whilst also increasing pulp production.
The boiler, which cost EUR 250 million in 2012, uses waste products from the production process to produce enough steam and electricity to cover the vast majority of the mill’s energy needs. For a period in mid April, the paperboard mill was even able to operate purely on bioenergy and also supply almost all its own electricity needs. The boiler has also enabled the mill to gradually increase its annual pulp production from what was then 350,000 tons to 420,000.
The mill’s sulphate process for pulp production involves separating the cellulose fibers that comprise half the mass of a log. The other half consists of the wood’s binding agent, which is mostly an energy-rich substance called lignin. This is burnt in the recovery boiler to produce steam and electricity.
“We’re getting close to the vision of a fossil-free mill that we’ve lived with and that has driven our investments for a long time,” says Mill Director Olov Winblad von Walter.
Another important aspect in the vision for Iggesund Mill is that emissions to air and water should be so low that Iggesund is among the global leaders among comparable manufacturers. Yet another goal is that a minimum of by-products will go to landfill.
Iggesund Mill, around 10 km south of Hudiksvall, is one of the most advanced, fully integrated pulp and paperboard mills in the world.