BIODIESEL FUEL PRODUCTION SYSTEM AND BIODIESEL FUEL PRODUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a biodiesel fuel production system and a biodiesel fuel production method capable of carrying out efficient purification with a simple apparatus configuration without the need of washing by water in the purification of crude biodiesel fuel.SOLUTION: A biodiesel fuel production system 1 includes: a raw material tank 10; a transesterification apparatus 20; an aeration apparatus 30 to remove alcohol; and an impurity removal apparatus 40 to remove impurity from crude biodiesel fuel with the alcohol removed. The aeration apparatus 30 includes: an aeration tank 31 that is configured to be able to pool crude biodiesel fuel and heat it to a predetermined temperature, and carries out the aeration by gas; a gas supply unit 32 to supply gas to crude biodiesel fuel; an aeration unit 33 that is connected to the gas supply unit 32 and provides aeration to crude biodiesel fuel; and a cooling tower 34 to cool the gas after aeration and recover alcohol.