The pressure difference between the boiling membrane and the condensing surface of the short-range molecular distiller is the driving force of the flow of steam, which causes a flow of steam for a small pressure drop. Operation at 1 mbar requires a very short distance between the boiling and condensing surfaces. A distiller based on this principle is called a short path distiller. The short path distiller (molecular distillation) has a built-in condenser on the opposite side of the heating surface and reduces the operating pressure to 0.001 mbar.
The material is added from the top of the evaporator, and is continuously and evenly distributed on the heating surface through the liquid distributor on the rotor, and then the wiper scrapes the liquid into a very thin, turbulent liquid film and spirals. Push down. During this process, the light molecules that escape from the heating surface condense into a liquid on the built-in condenser after a short route and almost no collision, and flow down the condenser tube through the discharge tube at the bottom of the evaporator. Discharge; the residual liquid, that is, the heavy molecules, is collected in a circular passage under the heating zone, and then flows out through the discharge pipe on the side.