A model of a counter-current plug-flow extraction reactor

A simple model of the counter flow reactor of ideal extrusion for extraction processes is formulated. The disperse phase in the form of spherical drops floats up towards to the moving continuous phase. An analytical solution of the mathematic model was found in the steady approximation was obtained. It was found that concentration distributions depended on the velocity of the continuous phase movement. At small velocities of the continuous phase movement, the upper part of the reactor works; at large velocities, the lower part. It was found that, at a given extraction degree, the steady regimes were implemented not at all velocities of the continuous phase movement.