A device, system and method are for treating a suspension, containing plant constituents, in particular separating a liquid or a solid therefrom, in the field of production of food, pharmaceutical and luxury products, and to corresponding uses. The device for continuously or discontinuously treating a suspension, in particular for separating a liquid or liquid phase or a solid or a residual phase from the suspension includes: a receiving unit for receiving the suspension and at least one separating device having a surface having openings. The surface can be brought into contact with the suspension, if the suspension is present in the receiving unit for separation into the liquid phase and the solid phase. During the operation of the device, the surface is arranged such that it is moved or can be moved or can be rotated relative to the suspension, the solid phase and/or the receiving unit.

A liquid extractor may include an extraction chamber containing a bed deck configured to support a solid material as the solid material is conveyed through the extraction chamber. To introduce solvent into the solid material being processed, the extractor may include a solvent injection orifice extending through the bed deck and a solvent injector. The solvent injector can receive solvent from a source and cause the solvent to rotate within the solvent injector before discharging the solvent through an outlet in fluid communication with the solvent injection orifice. The rotational flow motion imparted by the injector can create a vortex that functions to scout out any particles that may be present in the injector.

Embodiments of the present disclosure generally relate to apparatus for solvent extraction of coal and to processes for solvent extraction of coal. In an embodiment, an apparatus for solvent extraction of coal is provided. The apparatus includes a plurality of stationary members coupled to a stationary shaft, each stationary member having a stationary member opening. The apparatus further includes a rotatable shaft extending through the plurality of stationary members. The apparatus further includes a plurality of rotatable members coupled to the rotatable shaft, each rotatable member paired with a stationary member, and each rotatable member has a rotatable member opening configured to rotate relative to the stationary member opening. The apparatus further includes a plurality of members for agitating materials passing through the apparatus, the members for agitating materials coupled to the rotatable shaft, each member for agitating materials positioned between the paired stationary members and rotatable members.