System for large-scale production of biodiesel by catalyzing fatty acid with solid acid

The utility model discloses a system for large-scale production of biodiesel by catalyzing fatty acid with solid acid, and solves the technical problems of low production efficiency, poor production quality, tedious production process and high production cost of biodiesel produced from waste animal and vegetable oil in the prior art. The device comprises a first liquid methanol delivery pipe, a hydrolyzed animal and plant grease delivery pipe, a first raw material steam heater, a first methanol steam heater, a first static mixer, a first reaction tower, a liquid supercharger, a second raw material steam heater, a second methanol steam heater, a second static mixer and a second reaction tower, the first reaction tower is connected with a methanol recovery section, and the second reaction tower is connected with a first liquid methanol delivery pipe. According to the utility model, a large-scale production system is adopted, efficient and continuous production of biodiesel from fatty acid can be realized, conti