A system for controlled concentration and solids recovery

A method for controlled concentration and recovery of solids, from liquid medium, wherein the method comprises:

• a) providing a fluid-bed system comprising a gas pressurizing module, a container module, and a vapor extraction module, in this order arranged from bottom to top of the fluid-bed system such that the container module is located between the gas pressurizing module and the vapor extraction module, wherein the container module is above the gas pressurizing module and the vapor extraction module is above the container module, wherein the gas pressurizing module produces a pressurized gas that is introduced into the container module;
• wherein the container module comprises:
• a first container that is provided with a first perforated base for movement of the pressurized gas,
• a second container disposed in the first container so as to form a first continuous annular space on sides of the first container and the second container as well as to define a first space between the first perforated base of the first container and a base of the second container, and
• a third container disposed inside the second container to define a second continuous annular space on sides of the second container and the third container as well as to define a second space between the base of the second container and a second perforated base of the third container, the second perforated base of the third container being provided with a passage;
• wherein the first continuous annular space and the second continuous annular space are contiguous;
• wherein the first continuous annular space and the second continuous annular space are closed at a top of the first continuous annular space and the second continuous annular space;
• wherein the first perforated base of the first container is operably connected with an outlet of the pressurized gas;
• wherein the gas pressurizing module, the container module and the vapor extraction module are fixed to each other to form an integrally connected fluid-bed system;
• and
• wherein the first container has a first axis, the second container has a second axis, and the third container has a third axis, and the first axis, the second axis and the third axis are a same axis and are vertical.
• b) filling the liquid medium selected from solution, dispersion, emulsion, slurry, gel or semisolid, into the third container;
• c) making pressurized gas flow from the base of the first container, through the first continuous annular space, into the second continuous annular space, and further through the passage in the base of said third container to mix with the liquid medium;
• d) causing the solvent to evaporate, concentrating the liquid medium, and recovering the solids from the liquid medium.