NOVELTY - System for removing methanol from bio-diesel comprises a multi-layered evaporator (4) having 6-12 layers of heating disks. A single layered heating disk is round-shaped in the center and the double layers of heating disks are annular shaped. The liquid overflow position of the heating disk is corresponding to the flow-in position of the heating disk at the next layer. The multi-layer evaporator is provided with a liquid inlet (5). A conveying pump (1) is connected with the liquid inlet via a raw material control valve (2) and a liquid flow meter (3).    USE - Used as a system for removing methanol from bio-diesel.    ADVANTAGE - The system: controls the temperature independently at each layer and removes the methanol from the raw material form the upper layer to the lower layer, thus it can realize continuous operation process of removing the methanol from bio-diesel and reach the purpose of short heating time in the raw material; and has simple operation process.    DETAILED DESCRIPTION - System for removing methanol from bio-diesel comprises a multi-layered evaporator (4) having 6-12 layers of heating disks. A single layered heating disk is round-shaped in the center and the double layers of heating disks are the contacted annular shapes. The liquid overflow position of the heating disk at the upper layer is corresponding to the flow-in position of the heating disk at the next layer, where each layer of the heating disks is provided with a heating disk pipe for the entry and exit of the heating medium, and a process liquid thermometer. The multi-layered evaporator is provided with a liquid inlet (5) opposite to the heating disk at the upper layer, and a conveying pump (1) is connected with the liquid inlet via a raw material control valve (2) and a liquid flow meter (3). A liquid outlet is arranged at the bottom of the multi-layered evaporator and an air outlet is arranged at the top of the multi-layered evaporator. The air outlet is connected with a condenser.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the system for removing methanol from bio-diesel.    Conveying pump (1)    Raw material control valve (2)    Liquid flow meter (3)    Multi-layered evaporator (4)    Liquid inlet (5)