Is there a specific flow chart?
Process brief:After acidification and oil drying materials, acidic catalyst together into a reaction kettle with heating, stirring, heating to reaction temperature stirring, the auxiliary material partial vaporization with the reaction of water vapor into distillation tower, remove the moisture and then returned to the reactor in the reaction. After the reaction is finished, the unreacted auxiliary material is distilled, and the reaction product is pumped into a water washing dehydration pot. Finally, it is sent to the high temperature distillation kettle and rectified. Vegetable residue.
Should have a greater impact on the positive reaction. Therefore, the acid catalysis is not selected for alkaline catalysis. Of course, you can also use the acid catalytic reaction, which will be free fatty acid reaction after the end of the use of alkaline catalysis, but this will make the operation process is more complex. At the end of the reaction, the reaction product of oil as raw material, if the oil pretreatment is relatively complete, that is, less impurities, only the reaction products were washed, dried. As a result of the production of bio diesel oil, and for the acidification of oil as raw materials, the reaction products, due to the acidification of the oil itself with a large number of impurities (such as non saponification, pigment, etc.)
Biodiesel (vegetable oil, vegetable oil) and acidified oil can be used to produce biodiesel. Biodiesel is mainly made of fatty acids in oils and fats. The reaction requires a catalyst, otherwise the reaction is difficult to complete. The catalyst can be used either as an acid catalyst or an alkaline catalyst. The oil is used as the material, because of containing free fatty acids with little alkaline catalyst is suitable for acidic oil raw material, because of the free fatty acids accounted for more than half, when using alkaline catalyst, it is prone to side reaction and saponification reaction,
