NOVELTY - Refining fatty acid methyl ester comprises e.g. pumping esterification reaction product obtained from esterification plant into a heater, heating heat conducting oil, heating the raw material, conveying the raw material to be heated into tower top heat exchanger and heating, conveying into glycerin separation tank, cooling in a cooler and conveying into a collection tank, removing the glycerin material and conveying into the collection tank, introducing the raw material into the heater and methyl ester distillation column, discharging asphalt from reboiler into an asphalt tank, and distilling.    USE - The refined fatty acid methyl ester is useful for producing biodiesel.    ADVANTAGE - The fatty acid methyl ester produces biodiesel having high purity and high yield.    DETAILED DESCRIPTION - Refining fatty acid methyl ester comprises (i) pumping esterification reaction product obtained from esterification plant into a heater through a shielding pump and a flow meter, heating heat conducting oil by controlling temperature at 200-280 degrees C, then heating the raw material at 80-120 degrees C; (ii) conveying the raw material to be heated into tower top heat exchanger and heating the raw material at 100-140 degrees C; (iii) introducing the heated raw material into the heater and further heating the raw material at 120-160 degrees C, then conveying into a glycerin separation tank, cooling the glycerin vapors at top in a cooler and then conveying into a collection tank, transferring back to the to glycerin separation tank through the shielding pump, where the cooler and the collection tank were set with a cold trap, a buffer tank and a stuffing box connected to a vacuum unit, and the vacuum unit is connected to a vacuum pump cooler and a vacuum pump tank; (iv) removing the glycerin material and conveying into the collection tank through shielding pump and the through the flow meter, and then introducing the raw material into the heater and methyl ester distillation column; (v) discharging asphalt from a reboiler into an asphalt tank through the shielding pump, if the content of the asphalt is too high in fatty acid methyl ester, pumping the asphalt into the heater for pre-heating, and then into the methyl ester distillation column through the shielding pump for further separation; and (vi) drawing the fatty acid methyl ester from the upper part of the distillation column, then conveying into the cooler, cooling the finished product, pumping the finished product into a finished product tank through by the shielding pump. An INDEPENDENT CLAIM is also included for a device for refining fatty acid methyl ester, comprising a shielding pump (1), a first heater (2), a heat exchanger (3), a second heater (4), glycerin separation tank (5), a collecting tank (6), a shielding pump, a flow-meter, a third heater, methyl ester distillation column, a finished product cooler, a finished product receiving tank, shielding pump, a reboiler, shielding pump, pre-heater, a cooler, a cold trap, a buffer tank, a stuffing box, collecting tank, shielding pump, a vacuum unit, a vacuum pump cooler, a vacuum pump cooling water tank and other components. The first, second and third heaters, reboiler and pre-heater are used for heating the heat-transfer fluid. The shielding pump is connected to the heater through the pipeline. The heater is connected to the heater by the pipe. The heater is connected to the glycerin separation tank through the pipe. The glycerin separation tank is connected with the collecting tank through the pipe. The collecting tank is connected to the shielding pump through the pipe. The shielding pump is connected with the flow meter through the pipeline. The flow-meter is connected with the heater through the pipeline. The heater is connected with methyl ester distillation column through the pipe. The methyl ester distillation column is connected with the finished product cooler through the pipeline. The reboiler and the pre-heater are connected to the finished product cooler which is connected to the finished product receiving tank through the pipe. The finished product receiving tank and shielding pump are connected to the reboiler through the pipeline. The reboiler is connected to the shielding pump through the pipe. The shielding pump is connected with the pre-heater through the pipe. The pre-heater through a conduit is connected with the methyl ester distillation column. The methyl ester distillation column is connected with the top of the cooler through the pipe. The cooler is connected with the cold trap through the pipe. The cold trap is connected with the buffer tank through the conduit. The buffer tank is connected with the stuffing box through the pipe. The stuffing box is connected to the collecting tank through the conduit. The vacuum unit is connected to the collecting tank. The shielding pump is connected to the vacuum unit through a pipeline. The vacuum unit is connected to the vacuum pump cooler and the vacuum pump cooling water tank through the pipes. The vacuum pump cooler is connected to the vacuum pump cooling water tank through the pipe. The vacuum pump cooling water tank is connected to the vacuum unit and the vacuum pump cooler by the pipe.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the device for refining fatty acid methyl ester.    Shielding pump (1)    First heater (2)    Heat exchanger (3)    Second heater (4)    Glycerin separation tank (5)