During a test run on February 11, 2020 a production world record was reached on the pulp drying line, with a total running rate of 2750 air dried tonnes per day, corresponding to 458 air dried tonnes per day/meter, which is the highest specific capacity reached for a Softwood machine. During this test run the cutter has also achieved a top speed of 245 m/min, which is one of the highest in the world.
“The dryer rebuild in Värö 2016 was quite remarkable. Södra’s team has done a great job in bringing this machine to capacity levels where we have only seen hardwood machines before. This is certainly a world class reference for softwood production”, says Paulo Aguiar, Vice president, Wood and Pulp Handling business unit at Valmet.
The rebuilt dryer, which started up in 2016, was part of a major mill upgrade at Södra Cell Värö and involved increasing the production capacity from 425,000 tonnes to 700,000 tonnes of pulp per year. The rebuild made the mill one of the biggest in the world in terms of softwood sulphate pulp production.
Valmet supplied key technology for the upgrade project
Valmet’s delivery included a new cooking plant, upgrades of the fiber line, pulp dryer, flash drying, baling line, evaporation and recausticizing and a recovery boiler rebuild.
Valmet's innovative wood-processing solutions are designed to treat valuable wood-raw material as gently as possible to make it ideal for further processing and to gain the best possible yield from it.
Valmet Baling offers the most sophisticated technology of its kind in the world for baling operations – complete baling line solutions with an optimized combination of highly reliable machines, sophisticated control system and heavy-duty conveyors to match each customer’s specific line requirements
Valmet offers best available technology for efficient and economic pulp drying and baling. Our wide and flexible technology offering facilitates several pulp grades with end products like dissolving, textile fluff and market pulp.
Today, there is an ever-increasing demand for environment-friendly pulp production. To provide solutions for mastering this challenge, Valmet has developed a family of intelligent chemical pulping processes.
The white liquor plant completes the chemical recovery cycle converting green liquor to white liquor. In this process most of the Na2CO3 in the green liquor is turned back into NaOH in white liquor, which can then be used for cooking liquor. The aim of the process is to produce as much strong white liquor as possible.
Valmet Recovery Boiler offers the highest possible efficiency and availability. The boiler is tailored for customer needs and demands by utilizing our proven solutions and the latest innovations.
Valmet's evaporator and condensate treatment plants provide high reliability, increased dry solids and high environmental performance.