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Biodiesel oil preparing method

A biodiesel and product technology, applied in biofuels, petroleum industry, liquid carbon-containing fuels, etc., can solve the problems that have not been successfully realized industrialization, China University of Science and Technology, Petrochemical Science Research Institute, Northwest Agriculture and Forestry Science and Technology University, Liaohe Chemical Plant, Northeast Forestry University, East China University of Science and Technology, Liaoning Provincial Energy Institute, etc. have carried out laboratory research and development, etc., to achieve the effects of high selectivity, good stability and high purity

Active Publication Date: 2013-12-11
爱瑞克(大连)安全技术集团有限公司
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  • Application Information

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Problems solved by technology

China University of Science and Technology, Academy of Petrochemical Sciences, Northwest University of Agriculture and Forestry Science and Technology, Liaohe Chemical Plant, Northeast Forestry University, East China University of Science and Technology, Liaoning Provincial Institute of Energy, etc. have carried out laboratory research and development, but none of them have successfully achieved industrialization

Method used

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Experimental program
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Effect test

Embodiment 1

[0012] Take 50 ml of soybean oil and put it into a reaction vessel, preheat it at 30°C for 60 minutes; add ionic liquid (1-ethyl-3-methyl imidazole alanine) in 50 ml of methanol solution, turn on the stirring device, control the rotation speed at 250 r / min, and react violently for 90 minutes; take it out and transfer it to a separatory funnel, and let it stand at room temperature until the system is clearly divided into two layers. Transfer the lower layer substance to another separatory funnel, and add an equal volume of warm water for washing. After the solution is divided into two layers, the upper layer product is the target product. The yield was 80%.

[0013] The target product was detected by gas chromatography, and the results were as follows: figure 1 Shown, show that the target product that adopts the method of the present invention to obtain is mainly methyl linoleate and methyl palmitate.

Embodiment 2

[0015] Take 25 ml of soybean oil and put it into a reaction vessel, preheat it at 50°C for 40 minutes; add ionic liquid (1-butyl-3-methyl imidazole proline) methanol solution 100 ml, turn on the stirring device, control the speed of 100 r / min, and react violently for 60 minutes; take it out and transfer it to a separatory funnel, and let it stand at room temperature until the system is clearly divided into two layers. Transfer the lower layer substance to another separatory funnel, and add an equal volume of warm water for washing. After the solution is divided into two layers, the upper layer product is the target product. The yield was 90%.

[0016] The target product was detected by gas chromatography, which showed that the target product was mainly methyl linoleate and methyl palmitate.

Embodiment 3

[0018] Take 100 ml of soybean oil and put it into a reaction vessel, preheat it at 60°C for 10 minutes; add ionic liquid (1-hexyl-3-methyl imidazolium leucine) methanol solution 500 ml, turn on the stirring device, control the speed of 500 r / min, and react vigorously for 150 minutes; take it out and transfer it to a separatory funnel, let it stand at room temperature, and transfer the Put the substance in the lower layer into another separating funnel, and add an equal volume of warm water to wash it. After the solution is divided into two layers, the product in the upper layer is the target product. The yield was 92%.

[0019] The target product was detected by gas chromatography, which showed that the target product was mainly methyl linoleate and methyl palmitate.

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Abstract

The invention relates to a biodiesel oil preparing method, which comprises the following steps: taking a certain amount of soybean oil and placing in a reaction vessel, preheating for 10-90 minutes at the temperature of 30-70 DEG C, adding a methanol solution with dissolved ionic liquid, reacting for 30-150 minutes under the stirring, standing at the room temperature, layering, removing a lower layer substance, adding water for washing, and standing and layering, wherein an upper layer substance is an target product. The method of the invention has the advantages of simple method, no pollution, easy separation of catalyst and high selectivity of a catalytic system, in a complex system of the soybean oil, a transesterification of linoleic acid and palmitic acid can be catalyzed, the purity of the product is high, the products are methyl linoleate and methyl palmitate, the catalyst can be circularly used, the stability is good, the disadvantages of non-circulation of an original system and pollution caused by environment can be overcome, and the method provided by the invention belongs to the environmental Friendly process route.

Description

technical field [0001] The invention belongs to the field of chemical catalysis, and in particular relates to a method for preparing biodiesel by selectively catalyzing soybean oil with an amino acid dialkylimidazolium salt ionic liquid as a catalyst. Background technique [0002] Biodiesel appeared in the Second World War, but at that time, cooking oil was directly added to the engine for combustion under the condition of energy shortage. Research on biodiesel first began in the 1970s. At first, it was to solve the energy crisis at that time, and the research focus was only on the direct use of animal and vegetable oils as fuels. However, vegetable oils and animal fats have large molecular weights and long carbon chains, and they have high viscosity and low-temperature performance when used directly as fuels. Poor quality, easy carbonization and coking, clogged oil nozzles and other problems, coupled with the difficulty of complete oxidation, make the direct replacement of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C3/10C10L1/02
CPCY02E50/13Y02E50/10
Inventor 臧树良房大维
Owner 爱瑞克(大连)安全技术集团有限公司
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