OPT800 Oxygen is an advanced process control (APC) system for the control and monitoring of the Oxygen delignification process in the fiber line. The OPT800 Oxygen control functions are based on the multivariable model predictive control technology. OPT800 Oxygen maintain stable delignification conditions and allows for controlling at a constant Kappa target or a constant delignification ratio. It optimally manipulates the oxygen and alkali charges and temperatures in the oxygen reactors thereby maintaining optimal lignin content and pH. This results in a strong pulp, reduced chemical demand and low environmental impact. The built-in pulp tracking function helps in monitoring and diagnosing the process while also tracking the key process parameters through the oxygen reactors.
OPT800 Oxygen has been developed and improved based on ABB’s expertise in advanced controls and extensive experience gained from several installations worldwide. The system can be applied to both medium and high consistency delignification as well as for single and dual stage processes. OPT800 Oxygen consists of the state-of-the-art APC software application including installation, start-up, tuning and training service.