Biodiesel prepared by non-edible vegetable oil and method thereof

A technology of edible vegetable oil and biodiesel, applied in biofuel, petroleum industry, liquid carbon-containing fuel, etc., can solve unseen problems

Inactive Publication Date: 2012-07-18
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the use of non-edible silymarin oil as a raw material to produce biodies...

Method used

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  • Biodiesel prepared by non-edible vegetable oil and method thereof

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Experimental program
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Effect test

Embodiment 1

[0015] Add 10 g of milk thistle oil (11.7 mmol) and 1.5 g of methanol (46.8 mmol) into a three-necked flask, stir evenly, heat to 35 °C, then add 1% of milk thistle oil weight potassium hydroxide as a catalyst, at 45 Stir the reaction at ℃ for 30 min; cool the reaction product, let stand to separate layers; use the method of vacuum distillation to recover excess methanol, and then add dilute sulfuric acid with a mass fraction of 5% to adjust the pH value of the system to close to Neutral, and then washed with distilled water until the water is clear and colorless; the product obtained above is subjected to vacuum distillation to obtain biodiesel.

[0016] Under this process, the yield of biodiesel is 45.8%

Embodiment 2

[0018] Add 10 g of milk thistle oil (11.7 mmol) and 4.5 g of methanol (140.6 mmol) into a three-necked flask, stir evenly, heat to 40 °C, and then add 1.2% of milk thistle oil weight potassium hydroxide as a catalyst, at 65 Stir the reaction at ℃ for 70 min; cool the reaction product, let stand to separate layers; use the method of vacuum distillation to recover excess methanol, and then add dilute sulfuric acid with a mass fraction of 10% to adjust the pH value of the system to close to Neutral, and then washed with distilled water until the water is clear and colorless; the product obtained above is subjected to vacuum distillation to obtain biodiesel.

[0019] Under this process, the yield of biodiesel is 87.7%

Embodiment 3

[0021] Add 10 g of milk thistle oil (11.7 mmol) and 5.6 g of methanol (175.0 mmol) into a three-necked flask, stir evenly, heat to 45 °C, and then add 3% of milk thistle oil weight potassium hydroxide as a catalyst, at 75 Stir the reaction at ℃ for 120 min; cool the reaction product and let it stand for stratification; use the method of vacuum distillation to recover excess methanol, and then add dilute sulfuric acid with a mass fraction of 15% to it to adjust the pH value of the system to close to Neutral, and then washed with distilled water until the water is clear and colorless; the product obtained above is subjected to vacuum distillation to obtain biodiesel.

[0022] Under this process, the yield of biodiesel is 85.4%

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Abstract

The invention relates to biodiesel prepared by non-edible vegetable oil and a method thereof, which belong to the biodiesel field. By-product milk thistle oil produced during the production process of Silibinin serves as a raw material for preparing the biodiesel. The biodiesel is obtained by transesterification of the milk thistle oil and methyl alcohol under the condition of a catalyst. Gas chromatography-mass spectrometry analysis results show that main components of the biodiesel prepared by the milk thistle oil serving as the raw material are methyl oleate and methyl linoleate. The biodiesel is high in cetane number, excellent in performance and capable of meeting China current biodiesel standard. In addition, the biodiesel is simple in process, mild in reaction condition, low in cost and capable of achieving large-scale production.

Description

technical field [0001] The invention relates to a biodiesel prepared from a novel non-edible vegetable oil and a method thereof, in particular to a biodiesel prepared from non-edible milk thistle oil and a method thereof, belonging to the field of biodiesel. Background technique [0002] As an important resource in today's world, oil has greatly promoted modern civilization and made great contributions to human life. However, with the sharp increase in demand for petrochemical products, the reserves of oil, a non-renewable resource, are decreasing day by day. Some experts predict that oil will be exhausted in the next few decades. Biodiesel has attracted widespread attention due to its rich source of raw materials, outstanding environmental protection and good renewability. It is a clean and safe new fuel produced by using animal and vegetable oils and high acid value oils. It is mainly produced by catalytic transesterification of these oils with some short-chain alcohols (...

Claims

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Application Information

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IPC IPC(8): C10L1/02C11C3/10
CPCY02E50/13Y02E50/10
Inventor 吴向阳朱伯乐张敏仰榴青张祯曲洪媛韩志湘梁国熙
Owner JIANGSU UNIV
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