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Method for preparing biodiesel, dodecoic acid, capric acid and monoglyceride thereof from Lindera communis fruits

A technology of biodiesel and lauric acid, applied in chemical instruments and methods, biofuels, biological raw materials, etc., can solve the problems of large equipment investment, complex production process, high production cost, etc., achieve high raw material utilization rate, reduce production cost, The effect of small side effects

Inactive Publication Date: 2009-01-28
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] At present, lauric acid, capric acid and their monoglyceride products have problems such as complex production process, large equipment investment and high production cost.

Method used

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  • Method for preparing biodiesel, dodecoic acid, capric acid and monoglyceride thereof from Lindera communis fruits
  • Method for preparing biodiesel, dodecoic acid, capric acid and monoglyceride thereof from Lindera communis fruits
  • Method for preparing biodiesel, dodecoic acid, capric acid and monoglyceride thereof from Lindera communis fruits

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] use as figure 1 The extraction process extracts the fruit of the fragrant leaf tree, and the specific process is as follows:

[0054] The air-dried geranium fruit was selected by winnowing to remove impurities and iron, and the pericarp was quickly soaked in 80°C hot water to separate the peel. The weight ratio of fruit to hot water was 1:6, and the soaking time was 30s. The fruit peels are filtered, pan-milled and ground, and the cores are dried and ground through a 40-mesh sieve.

[0055] Grind the pericarp into a reaction kettle, add methanol, sulfuric acid, etc. to carry out synchronous extraction and pre-esterification of the pericarp oil, the weight ratio of the pericarp and methanol is 1:4, the amount of concentrated sulfuric acid as a catalyst is 0.5% of the dry weight of the pericarp, and the reaction temperature is 70 At ℃, simultaneous extraction and pre-esterification reaction were carried out for 7h. The synchronous extraction and pre-esterification react...

Embodiment 2

[0060] The air-dried geranium fruit was sorted by air to remove impurities and iron, and the pericarp was quickly soaked in hot water at 60°C to separate the peel. The weight ratio of fruit to hot water was 1:7, and the soaking time was 20s. The fruit peels are filtered, pan-milled and ground, and the cores are dried and ground through a 40-mesh sieve.

[0061] Grind the pericarp into a reaction kettle, add ethanol, sulfuric acid, etc. to carry out synchronous extraction and pre-esterification of the pericarp oil, the weight ratio of the pericarp to ethanol is 1:3, the amount of concentrated sulfuric acid as a catalyst is 0.3% of the dry weight of the pericarp, and the reaction temperature is 60 The simultaneous extraction and pre-esterification reaction at ℃ for 5h. The simultaneous extraction and pre-esterification reaction materials are neutralized and dehydrated to a water content of less than 0.5%, the molar ratio of peel oil to ethanol is 1:3, the amount of catalyst NaOH...

Embodiment 3

[0065] The air-dried geranium fruit was selected by winnowing to remove impurities and iron, and the pericarp was quickly soaked in 90°C hot water to separate the peel. The weight ratio of fruit to hot water was 1:5, and the soaking time was 40s. The fruit peels are filtered, pan-milled and ground, and the cores are dried and ground through a 40-mesh sieve.

[0066] Grind the pericarp into a reaction kettle, add isopropanol, sulfuric acid, etc. to carry out synchronous extraction and pre-esterification of the pericarp oil, the weight ratio of the pericarp to isopropanol is 1:5, and the amount of concentrated sulfuric acid as a catalyst is 0.6% of the dry weight of the pericarp , Synchronous extraction and pre-esterification reaction at a reaction temperature of 80° C. for 7 h. Neutralize the synchronous extraction and pre-esterification reaction materials, and dehydrate until the water content is less than 0.5%, the molar ratio of peel oil to isopropanol is 1:5, the amount of ...

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Abstract

The invention provides a method for preparing biodiesel, dodecylic acid and decanoic acid and the monosterins by taking the fruit of lindera communis as raw materials. The method comprises the following steps: the air-dried fruit of lindera communis is quickly soaked in hot water to separate out the peel, which is ground by a dise mill and filled in a reactor and added with lower alcohol and sulphuric acid, etc. for the synchronous extraction and pre-esterification of peel oil; the reaction feed liquid carries out base catalysis ester exchange reaction after dehydration, and the biodiesel is prepared and obtained through separating and refining; kernel oil is prepared by grinding kernel in a way of solvent extraction, a reactor filled with the kernel oil is added with solvent, water and 1-3 position specificity lipase to carry out the enzymic degradation esterification of the kernel oil, and the reaction liquid carries out vacuum desolvation and short path distillation to respectively obtain the products of decanoic acid, lauric acid, decanoic acid monosterin and lauric acid monosterin. The method of the invention makes full use of the fruit raw material of lindera communis, lowers the manufacture cost of biodiesel to the most extent and realizes the high-value utilization of the fruit of lindera communis.

Description

technical field [0001] The invention relates to a method for preparing biodiesel, lauric acid, capric acid and monoglycerides by using geranium fruit as raw materials, belonging to the field of biomass chemistry and chemical industry. Background technique [0002] Biodiesel is a fatty acid ester obtained by alcoholysis of animal and vegetable oils with low-carbon alcohols. Biodiesel does not contain aromatic hydrocarbons and has very low sulfur content. Compared with petrochemical diesel, it is a high-quality clean fuel that can replace ordinary diesel. [0003] Biodiesel has the characteristics of excellent environmental protection, good low-temperature engine starting performance, good lubricating performance, good safety performance, good fuel performance, and easy mixing and renewability. Therefore, the excellent performance of biodiesel has been widely concerned and highly valued by countries all over the world, and developed countries such as Europe and the United Sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00C07C67/08C12P7/40C12P7/62
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 蒋建新蒲志鹏王卫刚张志翔朱莉伟
Owner BEIJING FORESTRY UNIVERSITY
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