NOVELTY - Biodiesel oil raw material deacidification device comprises an esterification deacidification system and a methanol gasification dehydration system. The esterification deacidification system comprises an esterification reactor (8), a high acid value oil raw material tank (12), a methanol raw material tank (13), an acidic catalyst raw material tank (14) and a heat exchanger (15). The esterification reactor is provided with a heater at the bottom, a methanol steam distributor and a cylindrical structure products discharge port. An outlet at the top is connected with the heat exchanger inlet.    USE - Used as a biodiesel oil raw material deacidification device.    ADVANTAGE - The device is economical and ecofriendly, has simple structure with high production efficiency and less energy consumption, ensures clean production process, and improves the reaction conversion rate.    DETAILED DESCRIPTION - Biodiesel oil raw material deacidification device comprises an esterification deacidification system and a methanol gasification dehydration system. The esterification deacidification system comprises an esterification reactor (8), a high acid value oil raw material tank (12), a methanol raw material tank (13), an acidic catalyst raw material tank (14) and a heat exchanger (15). The esterification reactor is provided with a heater at the bottom, a methanol steam distributor and a cylindrical structure products discharge port. An outlet at the top is connected with the heat exchanger inlet through a pipe. The upper feeding port is connected with the high acid value oil raw material tank. The methanol raw material tank is connected with a material outlet of acid catalyst raw material tank. The methanol gasification dehydration system is mounted on the lower part of a water absorbing material. The bottom of the methanol gasification dehydration system is provided with a heater of a methanol gasifier, and the top is connected with methanol steam distributor at the bottom of the esterification reactor. The bottom feed inlet is connected with the heat exchanger outlet through the pipeline.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic representation of the biodiesel oil raw material deacidification device.    Esterification reactor (8)    High acid value oil raw material tank (12)    Methanol raw material tank (13)    Acidic catalyst raw material tank (14)    Heat exchanger (15)