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

Inactive Publication Date: 2009-02-04
四川省毛叶山桐子科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also some disadvantages, such as saponification side reactions are prone to occur, the by-product glycerin is not easy to separate and purify, the catalyst cannot be reused, and the equipment is severely corroded, especially in the refining process, which requires water washing, which will bring a lot of industrial wastewater, etc.
As the preparation of biodiesel, rough jatropha oil is no exception. It also needs to be catalyzed by transesterification to become refined oil, and the catalysts currently used are not separated from traditional alkaline catalysts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The present invention discloses a technique which uses solid alkali to catalyze idesia polycarpa var.vestita bites to prepare biodiesel. After the extracted idesia polycarpa var.vestita bites is treated by the processes of degumming, alkali refining and deacidification and decolorization, solid alkali Mg-Al composite oxide is utilized to catalyze low-carbon alcohol, so that ester exchange reaction occurs between the low-carbon alcohol and the idesia polycarpa var.vestita bites to prepare crude biodiesel, and after depressurization and distilling, the light-colored refined biodiesel is produced. The yield of the biodiesel prepared by the technique is high, the product reaches the national standards, meanwhile, the production cost of the biodiesel can be reduced, the service life of equipment can be prolonged, the subsequent separation process can be simplified, and the drainage of industrial waste water can be reduced.

Description

technical field [0001] The invention belongs to the technical field of preparing biodiesel from jatropha oil, and in particular relates to a method for preparing biodiesel from jatropha oil catalyzed by a solid base. Background technique [0002] With the rapid development of the world economy, human beings consume more and more energy, while the non-renewable oil and coal stocks are getting less and less. The shortage of energy has become a top priority for human beings. Material energy has become a hot spot of common concern around the world. [0003] Fuel ethanol and biodiesel have become the main research objects of biomass energy. According to the definition of the American Society for Testing and Materials (ASTM), biodiesel refers to a long-carbon chain fatty acid monoester produced from renewable biological resources such as animal and vegetable oils and fats, which can be used as a clean alternative fuel for compression ignition engines; it It is produced by the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 宋航汪全义兰先秋肖本伟肖乙涵
Owner 四川省毛叶山桐子科技股份有限公司
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