Pressing, separation, filtration

Pressing or in other ways separating fluids from dry matter is a central operation in many production lines and in waste water treatment.

When using presses or decanter centrifuges to separate water, fats or other fluids from dry matter, both yield and energy efficiency can be substantially improved using CORE’s advanced control.

The quality of the outgoing fluids and the concentration achieved for the dry matter depends on how well the press, the decanter or the centrifuge is controlled. CORE’s advanced controllers keep amperage and torque stable and variations at a minimum. Substantial savings may be achieved running the presses at a more optimal and less varying torque.

In waste water treatment, CORE’s advanced process controller can halve the variations in the dry matter content of the discharged cake and bring the average water content down. Dues and transport costs are typically paid per ton cake, so the saving potential can be large.

Advanced process control has generally proven effective when it comes to stabilising flows and ensuring an optimal filtration process.

Unstable flows may originate from poorly controlled valves that start oscillating because the flow has changed to another level. Using standard PID controllers, the controller time must be retuned which only works until the next unanticipated change in flow level.

This is completely avoided using CORE’s advanced process controller that adapts to the actual flow and to other conditions that influences the process time.

"The use of CORE’s adaptive controllers in our decanters for waste water treatment enhances the efficiency and improves sustainability."

Bent Madsen,
Alfa Laval