The recovery boiler was built in 1977 and its current capacity is roughly 2,000 metric t of dry solids per day. The upper and lower drum of the recovery boiler and the steam generating bank between them will be replaced by a new drum and separate boiler bank elements needed for heat recovery.

“The conversion will significantly extend the boiler’s lifetime, improve the boiler’s availability, secure safe operation and reduce maintenance costs. Further advantages offered by a single-drum conversion compared to replacing the existing design with a similar one are a shorter down-time and the reliability of the solution,” says Olli Ypyä, Sales Manager, Boiler Conversions, from Metso.