Method for preparing bio diesel oil by idesia polycarpa maxim. var. vestita diels oil catalysis using solid base as catalyst
A technology of biodiesel and solid base, which is applied to the preparation of biofuels, biological raw materials, and liquid hydrocarbon mixtures. It can solve the problems of difficult separation and purification of by-product glycerin, catalysts that cannot be reused, and saponification side reactions that are prone to occur, so as to avoid Neutralize with acid and wash with water, easy to separate, and reduce emissions
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Embodiment 1
[0023] (1) Add 70.10 g of squeezed Jatropha oil at 75°C to hydration and degumming for 30 minutes by adding water at the same temperature with an oil weight of 7%;
[0024] (2) After drying the degummed oil to remove water, heat and control the oil temperature at 80° C., add 6% of the oil weight under stirring, and a sodium hydroxide solution with a concentration of 19% for alkali refining and deacidification for 50 minutes;
[0025] (3) Add 5% of the oil weight to the jatropha oil after alkali refining at 95°C and decolorize it with activated clay for 2 hours at 150°C in advance for 40 minutes;
[0026] (4) After 50.10g decolorized grease, 12.53g methyl alcohol (alcohol-oil molar ratio is 6: 1) after mixing, then add the Mg-Al composite oxide that is 1.0% by decolorized grease weight, and at a temperature of 60 DEG C Stir the reaction under magnetic force for 2 hours. After the reaction, unreacted methanol is recovered by distillation. The reaction liquid phase is filtered wh...
Embodiment 2
[0029] (1) Add 69.50 g of squeezed jatropha oil at 70°C to hydration and degumming for 40 minutes by adding water at the same temperature with 5% oil weight;
[0030] (2) After drying the degummed oil to remove water, heat and control the oil temperature at 75° C., add 7% of the oil weight and a concentration of 19% potassium hydroxide solution under stirring to carry out alkali refining and deacidification for 40 minutes;
[0031] (3) Add 5.5% of the oil weight to the Jatropha tomentosa oil after alkali refining at 90°C and decolorize it with activated clay for 2 hours at 150°C in advance for 45 minutes;
[0032] (4) After 51.30g decolorized grease, 25.41g ethanol (the molar ratio of alcohol to oil is 9: 1) is mixed, then add the Mg-Al composite oxide that is 3.0% by the grease weight after decolorization, and at a temperature of 70 ℃ Stir the reaction under magnetic force for 3 hours. After the reaction is over, distill and recover the unreacted ethanol, filter the reaction ...
Embodiment 3
[0035] (1) Add 110.50 g of squeezed jatropha oil at 80°C to hydration and degumming for 35 minutes with water at the same temperature with an oil weight of 6%;
[0036] (2) After drying the degummed oil to remove water, heat and control the oil temperature at 70° C., add 8% of the oil weight and a concentration of 19% sodium hydroxide solution under stirring to carry out alkali refining and deacidification for 45 minutes;
[0037] (3) At 100°C, add 6% of the oil weight to the Jatropha oil after alkali refining and decolorize it with activated clay for 2 hours at 150°C for 50 minutes;
[0038] (4) After 50.52g decolorized grease, 27.20g isopropanol (the molar ratio of alcohol to oil is 7.5: 1) is mixed, then add the Mg-Al composite oxide that is 3.0% by decolorized grease weight, and at temperature Magnetic stirring reaction at 50°C for 4 hours. After the reaction, unreacted isopropanol was recovered by distillation. The reaction liquid phase was filtered while it was hot, and ...
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