Our ACTICO® CO2 pulp wash solution was designed to increase efficiency and improve dewatering during pulp washing. It also allows you to increase pulp washing capacity without having to invest in a new, bigger washing facility.
Suited to alkaline washing steps, ACTICO CO2 pulp wash adds carbon dioxide (CO2) to reduce the pulp pH slightly while still maintaining an alkaline balance. As a result of the lower pH, some of the charged groups on the pulp fibres (phenolic groups with high pKa) are protonated, and thus do not repel each other. This reduces fibre swelling.
Benefits at a glance
- Improved dewatering
- Less wash water required
- Less foaming
- Higher solid content in weak black liquor sent to evaporators
- Less steam required in evaporators
- Reduced carry-over of dissolved organic substances to the bleach plant
- Reduced soda loss