Stora Enso Orders Recovery Boiler Single-Drum Conversion at Imatra Mills
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Stora Enso Corp. Helsinki, Finland, has engaged Metso of Finland to handle the single-drum recovery boiler conversion at its Imatra Mills. The recovery boiler was built in 1987 and its current capacity is about 1,700 metric tpd of dry solids. The conversion project will be completed this fall. Total value of the order was not disclosed.
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. 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 with replacing the existing design are a shorter downtime and the reliability of the solution," said Jouni Koskinen, sales manager, Boiler Conversions, Metso.
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