To make steel, Tata steel operates cokes furnaces that change coal into a fuel for the blast furnaces. The pressure in the furnaces should vary as litte as possible. Using the PID Tuner, the pressure variations reduced by more than 50%.
Dishman Netherlands manufactures vitamin D, cholesterol and lanolin, using, among others a distillation column. We implemented and tuned two PID controllers (using the PID Tuner) to automate this column. Besides the obvious advantages, the energy consumption reduced with at least 8%.