NOVELTY - The continuous biofuel production process (10) comprises introducing a selected feedstock containing fatty acids and triglycerides into a first reaction vessel through a feedline equipped with a flow meter, where alkyl esters are produced through the esterification of free fatty acids, introducing the triglycerides and alkyl esters into a second reaction vessel, where a portion of the triglycerides are converted to alkyl esters and glycerin through transesterification, and introducing the alkyl esters, glycerin and remaining triglycerides into a third reaction vessel.    USE - The process is useful for continuously producing biofuel, which is useful in diesel engines in variety of applications including automobiles, marine vessels and industrial generators, where the biodiesel is produced from feedstocks such as waste or virgin vegetable oils such as soybeans, canola, sunflower, safflower, rape, cottonseed and corn or other animal fats such as cattle, sheep, swine, fish, poultry or butter fat.    ADVANTAGE - The process is capable of continuously, effectively and rapidly producing the biodiesel fuel with high energy density, high quality and high throughput.    DETAILED DESCRIPTION - The continuous biofuel production process (10) comprises introducing a selected feedstock containing fatty acids and triglycerides into a first reaction vessel through a feedline equipped with a flow meter, where alkyl esters are produced through the esterification of free fatty acids, introducing the triglycerides and alkyl esters into a second reaction vessel, where a portion of the triglycerides are converted to alkyl esters and glycerin through transesterification, introducing the alkyl esters, glycerin and remaining triglycerides into a third reaction vessel, where a portion of the remaining triglycerides are converted to alkyl esters and glycerin through transesterification, passing the alkyl esters and glycerin to a first separator that is configured to separate the glycerin from the alkyl esters, where the alkyl esters are part of a biofuel mixture, passing the biofuel mixture to a fuel wash vessel, where the biofuel mixture is washed and the washed biofuel mixture comprises soap slurry and raw biofuel, and passing the washed biofuel mixture to a second separator that is configured to separate the soap slurry from the raw biofuel. The feedstock is introduced to the first reaction vessel through a feedline equipped with an acid injector and an injector for an alkyl alcohol. Sodium methoxide is added to the triglycerides and alkyl esters prior to the introduction of the triglycerides and alkyl esters into the second reaction vessel. The sodium methoxide is produced from a combination of sodium hydroxide and methanol mixed in a mixing tank before adding the sodium methoxide to the first product. The sodium methoxide is added to the alkyl esters, glycerin and remaining triglycerides prior to the introduction of the alkyl esters, glycerin and remaining triglycerides into the third reaction vessel. The first, second and third reaction vessels each include a recirculation pump, and are maintained at a temperature of about 100-130 degrees F. The first and second separators are centrifuges. The soap slurry comprises soap and water. The process further comprises adding water to the biofuel mixture prior to passing the biofuel mixture to the fuel wash vessel, where the water is added at a rate of 10-30% of the volume of the biofuel mixture, and passing the soap slurry to a refining separator to separate soap from water. The separated glycerin and the separated soap are used as fuel for the biofuel production process. The raw biofuel is passed through an infrared sensor module to ensure that the raw biofuel meets preset specifications. The first reaction vessel is a continuous flow reaction vessel configured and operated to promote the esterification of the free fatty acids to alkyl esters. The fuel wash vessel is configured as a continuous flow fuel wash vessel. The second separator is a continuous flow separator configured to separate soap from the washed alkyl esters. An INDEPENDENT CLAIM is included for an alkyl ester production process in which alkyl esters are produced from feedstock containing free fatty acids and triglycerides.    DESCRIPTION OF DRAWING(S) - The figure shows a functional flow diagram of a biodiesel production process.    Biodiesel production process (10)    Feedstock preparation phase (12)    Sulfuric acid preparation phase (16)    Methoxide preparation phase (24)    Product separation phase. (26)