Andritz to Modernize Two Boilers in Sweden, Increasing Capacity up to 20%
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Andritz, Graz, Austria, reports that it has received orders from Stora Enso Nymölla AG and Domsjö Fabriker AB, both in Sweden, to modernize a recovery boiler and a sulfite liquor boiler, respectively. Due to the modernizations, the capacity of the two boiler plants will be increased by up to 20%. Both startups are scheduled for this year.
For Stora Enso's liquor recovery boiler in Nymölla, which went into operation in 1971, Andritz will supply the plate-type heat exchangers for pre-heating the combustion air in combination with an economizer to pre-heat the feed water. This technical concept is characterized by a long lifetime of the boiler and lower maintenance effort required; thus scheduled plant shutdowns can be reduced to a minimum and the plant's capacity increased significantly.
The scope of supply for sulfite liquor boiler No. 9 at Domsjö Fabriker, in operation since 1962, includes replacement of the super heater and evaporator heating surfaces, as well as partial replacement of the front and rear walls of the liquor boiler. The new design will improve fouling behavior of the boiler and enhance efficiency by up to 20%. Due to the very short assembly period of 18 days, the mill will have a very brief production shutdown.
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