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Method for preparing bio- diesel oil

A technology of biodiesel and bio-oil, which is applied in the preparation of biological raw materials, biofuels, and liquid hydrocarbon mixtures, etc., can solve the problems of low activity of heterogeneous catalysts, need repeated regeneration, and slow reaction speed, and achieve easy separation and reaction. The effect of fast speed and mild reaction conditions

Inactive Publication Date: 2006-02-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of heterogeneous solid acids and bases as catalysts overcomes the shortcomings of homogeneous strong acids and strong bases, but heterogeneous catalysts have problems such as low activity, slow reaction speed, deactivation, and the need for repeated regeneration.

Method used

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  • Method for preparing bio- diesel oil
  • Method for preparing bio- diesel oil

Examples

Experimental program
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Effect test

Embodiment 1

[0025] At reaction temperature 20 ℃, under the condition of pressure 0.1MPa, castor oil, methanol mixed solution (molar ratio 1: 30) that will mix homogeneously joins in the methylimidazolium bisulfate ionic liquid catalyst (castor oil and ionic liquid Molar ratio 1: 1), stirring, stop stirring after 10 hours of reaction, leave the reaction solution to stand and separate layers, take out the product in the upper layer, and recycle the catalyst in the lower layer.

Embodiment 2

[0027] At reaction temperature 300 DEG C, under pressure 2MPa condition, the rapeseed oil that mixes uniformly, ethanol mixed solution (molar ratio 1: 10) joins in trifluoromethanesulfonate butylsulfonate pyridinium ionic liquid catalyst (rapeseed oil and Ionic liquid molar ratio 1:1), stirring, stop stirring after reacting for 0.1 hour, leave the reaction solution to stand and separate layers, take out the product in the upper layer, and recycle the catalyst in the lower layer.

Embodiment 3

[0029] At reaction temperature 150 DEG C, under pressure 1MPa condition, the soybean oil that mixes uniformly, propanol mixed solution (molar ratio 1: 1) is joined in p-toluenesulfonic acid hexylsulfonate triphenylphosphine ionic liquid catalyst (soybean oil and The ionic liquid molar ratio is 300:1), stirring, and the stirring is stopped after 5 hours of reaction, and the reaction solution is allowed to stand for stratification, and the product in the upper layer is taken out, and the catalyst in the lower layer is recycled.

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Abstract

The invention relates to a method for preparing bio- diesel, wherein ionic liquid is used as the catalyst, the reaction temperature is 20-300 deg. C, the reaction pressure is 0.1-2 MPa, the mol ratio of biological grease and short chain alcohols is between 1:30-1:1, the mol ratio of biological grease and ionic liquid catalyst is between 300:1-1:1.

Description

technical field [0001] The invention belongs to the technical field of bio-oil synthesis and green renewable energy, and in particular relates to a novel method for preparing biodiesel by catalysis of ionic liquid. Background technique [0002] With the depletion of petroleum resources and the improvement of people's awareness of environmental protection, people are paying more and more attention to the substitutes of petroleum fuels. Biodiesel is a fatty acid ester substance produced by transesterification of animal and vegetable oil raw materials. It is a new type of non-polluting renewable energy. Its combustion performance is comparable to that of traditional petroleum diesel. Harmful substances in exhaust gas are reduced by 50% compared with traditional petrochemical diesel. Therefore, the research and application of biodiesel has received extensive attention. [0003] The production method of biodiesel is mainly to transesterify animal and vegetable oils and short-ch...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 吴芹韩明汉陈和王金福金涌
Owner TSINGHUA UNIV
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