Processes of Biodiesel Plant
There are many moisture, impurity in the raw material, so before esterification must first to make roughly filter, fine filter and falling film drying treatment, in order to get the standard oil.
According to a certain proportion and velocity put standard raw oil, glycerol and catalyst into esterification reaction tower, open heating device by adjusting to the requirements of the technical parameters, during the reaction process, water removed promptly from the system. After sampling and testing, can be continuous discharge. The main free fatty acid and glycerol are the main free fatty acids and glycerol to produce triglyceride and water, while a small amount of single and two.
The responses of ester exchange reaction occurs mainly by the reaction of triglyceride and methanol, in the reaction process mainly generated methyl ester and glycerol, and part of the monoglycerides, diglycerides are generated.
the biodiesel distillation unit is a multi - type self - diversion and vacuum distillation unit, and the distillation system is heated by heat conduction oil.The utility model has the advantages in distillation, distillation, separation system as a whole, reducing the biodiesel residence time in the equipment, to ensure that the color of the biodiesel, cold material first and finished heat and heating into a distillation tower, give full consideration to the secondary utilization of heat energy, saving the production cost.
Due to the ester exchange containing methanol and little soap, recycling must be done before the alcohol treatment to avoid loss of methanol. The first glycerol ester exchange settlement after the discharge of introducing glass lined reactor regulation in a neutral or weak acidic, backward in glycerin settlement the desalting tank, then into the distillation tower of dewatering of purified alcohols.
Excess methanol in the system will go to distillated in the methanol distillation tower and then be recycling used.
glycerin purification process
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