Metso to Deliver Recovery Boiler Single-drum Conversion to Stora Enso Imatra Mills

Dec. 22, 2011 - Metso and Stora Enso have signed an agreement on the single-drum conversion of Stora Enso's Imatra Mills' recovery boiler.

The value of the order was not disclosed.

According to Metso, 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. At the same time, the second stage of the economizer will be rebuilt.

"The conversion will significantly extend the boiler's lifetime and allow for a possible capacity increase in the future," said Jouni Koskinen, Sales Manager, Boiler Conversions, Metso. "In addition, the conversion will 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 are a shorter downtime and the reliability of the solution," Koskinen said.

The recovery boiler was built in 1987 and its current capacity is about 1,700 metric tons of dry solids per day.

Metso said the conversion of the recovery boiler will be completed in the fall of 2012.

SOURCE: Metso