Andritz has received an order from Cartulinas CMPC S.A. to upgrade the complete bleaching system at its mill in Maule, Chile, which processes 100% radiata pine for the production of softwood BTMP (bleached thermo-mechanical pulp). Start-up of the upgraded bleaching system is scheduled for the fourth quarter of 2017.
The Andritz scope of supply encompasses
- components for the existing ANDRITZ screw press that feeds the installed ANDRITZ HC mixer
- a new screw conveyor system to the peroxide high-consistency (PHC) bleaching tower
- a new ANDRITZ PHC bleaching tower including an integrated medium-consistency (MC) pump
- a new pulp screw press including dilution conveyor
- a new MC pump to feed the pulp to the existing storage tower.
The bleaching system upgrade will lead to an increase in BTMP production from 30 to 37 admt/h, while at the same time substantially reducing energy consumption per ton of pulp produced.
