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Process of preparing biological diesel

A biodiesel and bio-oil technology, which is applied in the preparation of biological raw materials, biofuels, and liquid hydrocarbon mixtures. It can solve the problems of low activity of heterogeneous catalysts, the need for repeated regeneration, and slow reaction speed, and achieve equipment investment and operation. Low cost, easy separation, fast response effect

Inactive Publication Date: 2006-11-15
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 acid or base catalysts can overcome the shortcomings of homogeneous strong acid and strong base catalysts, heterogeneous catalysts have disadvantages such as low activity, slow reaction speed, deactivation, and the need for repeated regeneration.

Method used

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  • Process of preparing biological diesel
  • Process of preparing biological diesel
  • Process of preparing biological diesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw material and catalyst are added in the reactor by methanol: cottonseed oil: the mol ratio of pyridine butane sulfonic acid ionic liquid is 12: 1: 0.055, at reaction temperature be 170 ℃, under pressure 2.3MPa condition, stirring reaction 5 hours, Heating and stirring were stopped, the mixture was taken out, and left standing to be divided into two layers. The upper layer was a mixture of catalyst, methanol and glycerin, and the lower layer was a transesterification product. The yield of methyl ester was 92.5%.

Embodiment 2

[0029] The raw material and the catalyst are added in the reactor at a reaction temperature of 65° C. and a pressure of 0.1 MPa at a reaction temperature of 65° C. and a pressure of 0.1 MPa for 15 hours at a molar ratio of methanol: cottonseed oil: pyridine butane sulfonic acid ionic liquid. Heating and stirring were stopped, the mixture was taken out, and left standing to be divided into two layers. The upper layer was a mixture of catalyst, methanol and glycerin, and the lower layer was a transesterification product. The yield of methyl ester was 90.5%.

Embodiment 3

[0031] Raw material and catalyst are added in the reaction kettle by methanol: cottonseed oil: the mol ratio of pyridine butane sulfonic acid ionic liquid is 3: 1: 0.055, at reaction temperature be 170 ℃, under pressure 2.3MPa condition stirring reaction 20 hours, Heating and stirring were stopped, the mixture was taken out, and left standing to be divided into two layers. The lower layer was a mixture of catalyst, methanol and glycerin, and the upper layer was a transesterification product. The yield of methyl ester was about 91.4%.

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Abstract

This invention relates to the preparation method of the biological diesel fuel. It belongs to the composition of biological fuel and green regenerated energy resource technology area. It adopts the Bronsted acid ion as the catalyst, and the biological diesel fuel can be produced under the temperature is from 20DEG C to 300DEG C, the pressure is from 0.1Mpa to 10Mpa, the mole ratio of biological fat (or fat acid) to short chain alcohol is from 1:30 to 1:1300, the mole ratio of biological fat (or fat acid) to ion catalyst solution is from 300:1 to 1:1. Adopting the Bronsted acid iron catalyst to prepare the biological diesel fuel, the activity of the catalyst is high, the stability of it is good and it can reuse. There is no corrosion to the equipment and the process environment is friendly, and the product can be separated easily. The investment of equipment and cost of operation is low.

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 (or / and esterification) of animal and vegetable oil (or / and fatty acid) raw materials. It is a new type of pollution-free renewable energy, and its combustion performance can be compared with traditional Comparable to petroleum diesel, the harmful substances in the exhaust gas emitted by the engine after combustion of biodiesel is 50% lower than that of traditional petrochemical diesel, and it is one of the ideal fuels to replace diesel. [0003] The production method of...

Claims

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Application Information

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