The Metso-supplied evaporation plant and recovery boiler for Eldorado Celulose e Papel S.A. were started up successfully on December 1, 2012, at Eldorado's TrĂªs Lagoas mill, the largest single-line pulp mill in the world, in Brazil. The official inauguration ceremony of the mill was held on December 12, honoured by a large number of high-level guests.
Celso Tacla, Area President, South America, Metso's Pulp, Paper and Power segment, explains that "the Eldorado project is a success since it overcomes major challenges, such as the large-size equipment that came from different parts of the world, requiring extremely well executed logistics."
The evaporation plant, with a capacity of 1,600 t/h evaporated water, is the largest single line evaporation plant in the world with the purpose of concentrating black liquor up to 80% dry solids content for efficient and low- emission combustion in the recovery boiler.
The recovery boiler is also among the largest in the world in operation and has a 6,800 t of dry solids/d black liquor burning capacity and steam generation of 1,109 t of steam/hour. The steam will be used in the pulp manufacturing process and in power generation to supply the entire mill and produce a significant amount of power surplus. Additionally, the recovery boiler has high chemical recovery efficiency making the mill economically and environmentally sustainable.