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Method for preparing biodiesel by utilizing Chinese tallow kernel oil

A technology of tallow tree oil and biodiesel, applied in biofuels, fermentation, etc., can solve problems such as inedibility, achieve mild reaction conditions, relieve energy shortages, and be environmentally friendly

Inactive Publication Date: 2014-03-26
QINGDAO JIENENG ENERGY SAVING ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because tallow tree oil contains toxic phenolic substances, it cannot be eaten, which limits its application to a certain extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for preparing biodiesel from tallow catalpa oil. In a 50 mL glass conical flask with a stopper, add 4.0 g tallow catalpa oil, add methanol according to the alcohol-to-oil ratio of 3, and add 5% molecular sieve. Butanol was used as a solvent, the enzyme Novozym 435 was added in an amount of 2%, and the enzyme Lipozyme TLIM was added in an amount of 1%, and the reaction was carried out in a temperature-controlled shaker at 35°C. After 6 hours, samples were taken by centrifugation, and the conversion rate was calculated. At this time, the conversion rate was 79.56%.

Embodiment 2

[0016] A method for preparing biodiesel from tallow catalpa oil. In a 50 mL glass conical flask with a stopper, add 4.0 g tallow catalpa oil, add methanol according to the alcohol-to-oil ratio of 5, and add 6% molecular sieve. Butanol was used as a solvent, the enzyme Novozym 435 was added in an amount of 3%, and the enzyme Lipozyme TLIM was added in an amount of 2%, and the reaction was carried out in a temperature-controlled shaker at 40°C. After 10 h, samples were taken by centrifugation, and the conversion rate was calculated. At this time, the conversion rate was 89.13%.

Embodiment 3

[0017] Example 3 A method for preparing biodiesel by using tallow catalpa oil. In a 50 mL glass conical flask with a stopper, add 4.0 g tallow catalpa oil, add methanol according to the alcohol-to-oil ratio of 4, and add 5.5% molecular sieve. An appropriate amount of tert-butanol was used as a solvent, the enzyme Novozym 435 was added in an amount of 2.5%, and the enzyme Lipozyme TLIM was added in an amount of 1.5%, and the reaction was carried out in a temperature-controlled shaker at 37°C. After 8 hours, samples were taken by centrifugation, and the conversion rate was calculated. At this time, the conversion rate was 82.46%.

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Abstract

The invention relates to a method for preparing biodiesel by utilizing Chinese tallow kernel oil. The method comprises the following steps of: adding 4.0 grams of the Chinese tallow kernel oil to a 50mL glass conical flask with a stopper, adding methanol according to the methanol-oil ratio of 3-5, adding 5%-6% by weight of molecular sieves, adding 2%-3% by weight of enzymes Novozym 435 and 1%-2% by weight of enzymes Lipozyme TLIM by taking a proper amount of tert-butyl alcohol as a solvent, and placing into a temperature-controlled shaking table at 35-40 DEG C for reaction; centrifugalizing and sampling after 6-10 hours, and calculating transformation ratio. The method disclosed by the invention can be used for preparing the biodiesel through a biological enzyme method by adopting the Chinese tallow kernel oil, is moderate in reaction condition and environmental-friendly, sufficiently utilizes the Chinese tallow kernel oil and provides an advisable method for relieving energy shortage.

Description

technical field [0001] The invention relates to the field of energy and chemical industry, in particular to a method for preparing biodiesel from tallow tree oil. Background technique [0002] Biodiesel is a fatty acid monoester produced by esterification or transesterification from renewable biological resources such as animal and vegetable oils. It is an environmentally friendly and renewable alternative fuel. At present, the chemical method is the mainstream process of biodiesel, but it has high requirements for raw materials, is greatly affected by moisture and free fatty acids in raw materials, difficult to separate products, severely corrodes equipment, and pollutes the environment. [0003] Chinese tallow tree is one of the four major woody oil plants in my country, with an oil yield of over 40%. Because tallow tree oil contains toxic phenolic substances, it cannot be eaten, which limits its application to a certain extent. Contents of the invention [0004] Accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/64
CPCY02E50/10
Inventor 刘晓娜田英勇
Owner QINGDAO JIENENG ENERGY SAVING ENVIRONMENTAL PROTECTION TECH
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