What are the benefits of waste oil for biodiesel production in energy saving and emission reduction
(1) the waste oil is added into the oil tank to be pre processed, and the hot water is added with a temperature of 90 DEG to 95 DEG C, and the mixture is continuously stirred, so that the phospholipids in the oil can be dissolved in water to form a liquid separating layer. A mixture of phospholipids and water is discharged from the bottom of the tank as a by-product. After the degumming oil, the oil is absorbed by attapulgite, and the pigment and the stench impurities are removed. The rods are replaced every 10 days, and the soil is replaced by the release of oil from the filter belt. Soil as waste. After decolorization, the water is removed by heating, and then the pump is pumped into the acid removal tank, and the temperature is separated from the acid. Finally, after the removal rate of plant wax, get the standard raw material oil. In the process of pretreatment, the phospholipids, free acid and plant wax are used as by-products.
The standard oil of esterification is mixed with methanol through a static mixer and then mixed with the catalyst, and then enters into a synthetic reactor. The mixed material is heated by the heating coil in the reactor and the reaction pressure (positive pressure) is controlled, and the reaction time is controlled by a large amount of reflux of the methanol and the stirring and mixing of the stirrer. After the analysis of the test, the end of the synthesis reaction, into the coil into the cold water, rapid cooling and stop mixing. The esterification reaction is mainly produced by the reaction of animal and plant acid with methanol to produce methyl ester and water. The sedimentation of the reaction mixture was divided into glycerol phase and methyl phase. Glycerol phase (crude glycerin, water, alkali) de alkali separation tank; crude diesel oil to high crude diesel tank.
By the reaction of fatty acid to Biodiesel: RCOOH + CH3OH = RCOOCH3 + H2O from triglycerides to reactive Biodiesel: C3H5 (RCOO) 3 + 3CH3OH = RCOOCH3 + C3H5 (OH), 32 common methods of biodiesel production process of chemical production, plant and animal oils with methanol or ethanol low carbon alcohol in the presence of a catalyst for the esterification reaction of fatty acid esters of biodiesel. The project uses waste oil (or waste oil) and methanol as raw materials, the use of independent research and development of a one-time composite catalyst for biodiesel production. The production process is divided into four steps: pretreatment, esterification, glycerin refining, biodiesel distillation.
A brief introduction on the process of biodiesel drainage oil "1, reaction principle of main components using methanol or ethanol and other alcohols and drainage oil in the occurrence of triglyceride transesterification reaction using a (b) oxygen substituted long chain fatty acid glycerol based on the fracture of three, triglyceride and long chain fatty acid methyl (ethyl) fatty acid esters, the molecular acidification oil type can be expressed as ROOH, in which the meaning of R containing 16, 18 or 20 carbon alkane, usually R also contains 1 to 2 double bonds, the reaction equation of acidified oil for biodiesel processing
