OPT800 Oxygen enables or facilitates selective removal of lignin at a consistent rate before the bleaching stages by expertly managing the reactions and pH levels via tight control of the oxygen and alkali charges (kg per ton of pulp). It also maintains a constant delignification level by adjusting the outlet Kappa target – based on variations in the incoming Kappa.
The combined result is highly effective lignin removal and lower cellulose degradation, giving a stable outlet Kappa, high pulp strength, better yields, reduced chemical usage and lower environmental impact. In addition, the built-in Pulp Tracking Function helps monitor and diagnose any anomalies in the process, while also tracking the key process and pulp properties through the oxygen reactors. Plus, control performance will not degrade over time with always-on monitoring and analysis of the APC solution.