At the present time the number of cars is almost equal to the number of people in the world. And this is just one sphere of industry, which use oil and gas. The amount of harmful emission into the atmosphere can be called critical already for a long time. Scientists all over the world are looking for renewable and environment friendly sources of energy. One of these fuels is biodiesel. This fuel is obtained using reaction of trans-esterification of fatty acid and methanol. Fatty acids contain in a variety of vegetable oils. In the new stage of improving the process of esterification of vegetable fats researchers [1 - 6] evaluated the possibility of heterogeneous catalytic systems and the implementation of the esterification reaction in supercritical methanol. This, of course, reduces the amount of waste and reduce the corrosive effect of the reaction mass of the equipment. On the other hand the problem of effective separation of the reaction products and improve the efficiency of the process remain unresolved