GRAZ, Austria, May 15, 2013 (Press Release) -International technology Group ANDRITZ has received orders from Stora Enso Nymölla AG and Domsjö Fabriker AB, Sweden, to modernize a recovery boiler and a sulfite liquor boiler. Due to technology and equipment supplied by ANDRITZ Energy & Environment (AE&E), the capacity of the two boiler plants can be increased by up to 20%. Both start-ups are scheduled for 2013.
For Stora Enso's liquor recovery boiler in Nymölla, which went into operation in 1971, AE&E 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, comprises 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 AE&E design will improve the fouling behavior of the boiler and enhance efficiency by up to 20%. Due to the very short assembly period of 18 days, the customer will only have a very brief production shutdown.