Submersible system and method for measuring the density and/or concentration of solids in a dispersion

A submersible system for real-time in-line measuring of density and/or concentration of solids in an aerated dispersion, being in liquid form, in form of a mixture of multiple liquids, in form of a suspension of solids in liquid, or a combination of these forms, within a reactor whereby gas is introduced in the form of bubbles, the submersible system is configured to be immersed into an aerated dispersion inside a reactor, comprising:

• a chamber;
• a transmitter connected to at least one density sensor, located inside or outside of the chamber, where the transmitter generates an output signal proportional to density of the aerated dispersion without gas bubbles through the sensor located inside the chamber;
• and
• a processing unit that creates an output signal proportional to the concentration of solids of the dispersion without gas in volume or weight, and also the density of the slurry;
• an open and pass-through gas bubbles exclusion device which has a tubular body comprising different cross-section areas along its length, where an inlet opening through which the dispersion without gas bubbles enters the open and pass-through gas bubbles exclusion device, having a cross sectional area that is larger than a cross-sectional area of an outlet opening where the aerated dispersion without gas bubbles is released from the open and pass-through gas bubbles exclusion device, and where the outlet opening joins an inlet pipe;
• and
• wherein the chamber comprises a pipe with an intake and an outlet and the at least one sensor which allows measuring of the density of the aerated dispersion without gas circulating between the intake of the chamber and the outlet from the chamber, where the intake of the chamber is attached to an inlet main, and where the output of the chamber is attached to an outlet pipe through which the aerated dispersion returns towards the reactor.