Pulp Paper & Logistics
PROJECTS & CONTRACTS 27
Contracts awarded for Finland’s biggest-ever forest investment
solids content of 85 per cent for efficient combustion in the recovery boiler. In addition, Andritz will also deliver chloride removal systems to enhance the chemical recovery process and to produce liquid methanol, which will be used as a biofuel source. ● A recausticizing plant, which will be the largest in Europe with white liquor production of 16,000 cubic metres per day, and world’s largest single-line recausticizing plant, with two centrifuges for dregs, slaker- classifier, white liquor disc filter, and lime mud disc filter. The lines will be installed in
time for the start up of the mill in the first quarter of 2017. Much of the equipment will be
the largest-ever investment in Finland’s forest industry, the Metsä Fibre bio-product pulp mill being constructed at Äänekoski, have been contracted out to Andritz. The total investment will be €1.2 billion (US$1.35bn) and the plant will have capacity to produce 1.3 million tons of pulp a year.
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Described as a next-generation bio-product pulp mill, it will convert wood raw material into biomaterials and bioenergy in addition to producing high- quality pulp. It will not use any fossil-based fuels as all of
ood processing, liquor evaporation and recausticizing systems for
the energy required will be generated from wood. With a value of more than €100 million (US$112m), the core equipment will comprise: ● A complete wood processing
plant with three debarking and chipping lines, three stacker-reclaimer chip handling systems, and bark handling. Each debarking line can process both softwood and hardwood and is designed for world record capacities (470 cubic metres of pine, 350 of spruce and 270 of birch solid-over-bark per hour), and includes a de-icing conveyor, a debarking drum (5 x 48 metres), and the world’s biggest horizontally fed HHQ chipper, ensuring high capacity without compromising the chip quality.
● A softwood and hardwood
fibre-line comprising a chip feeding system, a two-vessel continuous cooking plant, a new evaporation system for liquor extraction, and seven DD (Drum Displacer) washers for brownstock washing and bleaching. The softwood capacity of this line will be the highest in the world at 3,900 tons per day, it is claimed. ● What is also claimed to be the world’s most energy-efficient black liquor evaporation plant with the highest capacity in Europe (1,650 tons/hour). The plant is closely connected to the fibre-line using Andritz’s patented designs. It will have seven stages and concentrate black liquor to a very high dry
fabricated at Andritz’s workshop at Savonlinna. “The bioproduct mill in Äänekoski is the largest investment in the forest industry in Finland. Competence, reliability and successful cooperation in previous large investments were emphasized when we made a decision of the key technology suppliers,” said Ilkka Hämälä, chief executive of Metsä Fibre.
Europe’s largest ever renewable energy production unit from Valmet Metsä Fibre’s bioproduct mill will have its recovery boiler, pulp drying line, gasification plant and lime kiln – the largest-ever system of its kind in Europe – along with a mill-wide automation system, supplied by Valmet within an
4 May/June 2015
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