Metso has started up the first AshLeach Duo at a pulp mill in South America. The AshLeach Duo provides efficient removal of non process elements without the need for steam or sulfuric acid. The new system maintains all operational flexibility advantages of the AshLeach technology, which was originally developed by Metso and is known for its reliability in operation in multiple references around the world.
The new AshLeach Duo system features a two-stage centrifuge system for removal of chlorine and potassium from recovery boiler ash, designed to minimize sodium losses and to avoid acid usage at high carbonate levels in the ash.
As global leader in large recovery boilers to the chemical pulping industry, Metso is pleased to have reached this important milestone. Having effective chlorine and potassium removal is essential for the recovery boiler operations in order to both increase availability and minimize risk for corrosion.
Metso is pleased also to announce that two other global pulp corporations have already ordered AshLeach Duo systems to be started up within this year as part of their important flagship mill projects.