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Method for simultaneously preparing long-chain alkane and arene by taking microalgae oil as raw material

A technology of long-chain alkanes and microalgae oil, which is applied in the preparation of biological raw materials, liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of no aromatics, no aromatics, etc., and achieves strong environmental adaptability, high oil content and distribution. wide range of effects

Active Publication Date: 2016-05-11
ZHEJIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Research on non-hydrogen-catalyzed decarboxylation of fatty acids (esters)" (Yang Cuiyue, China Excellent Master's Dissertation Full-text Database Engineering Science and Technology Series II) discloses a method of non-hydrogen-catalyzed decarboxylation of microalgal oils in high-temperature liquid water to prepare long-chain alkanes method, but this reaction does not produce aromatic hydrocarbons. It is precisely because of the presence of water in the non-hydrocatalytic decarboxylation reaction that the dehydrogenation of unsaturated acids and intermediate products is inhibited, so that the intramolecular D-A reaction aromatization cannot continue, resulting in the final Product has no aromatics

Method used

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  • Method for simultaneously preparing long-chain alkane and arene by taking microalgae oil as raw material
  • Method for simultaneously preparing long-chain alkane and arene by taking microalgae oil as raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Add 100g of microalgae oil and 100g of deionized water into a 500mL intermittent high-temperature and high-pressure reactor, start stirring, and heat up to 200°C for 9 hours of hydrolysis reaction. After the hydrolysis reaction is completed, cool to room temperature, and obtain the upper hydrolyzate (C 10 ~C 22 fatty acid) 87.8g; 87.8g of hydrolyzate and 5.2g of Pt / C were added to a 500mL intermittent high-temperature and high-pressure reactor, heated to 350°C for 4 hours, and filtered while hot to obtain 52.5g of C 9 ~C 21 Long chain alkanes and 16.6 g aromatics.

Embodiment 2

[0040] Add 100g of microalgae oil and 100g of deionized water into a 500mL intermittent high-temperature and high-pressure reactor, start stirring, heat up to 240 ° C for 7 hours of hydrolysis reaction, after the hydrolysis reaction is completed, cool to room temperature, and obtain the upper hydrolyzate (C 10 ~C 22 fatty acid) 88.4g; 88.4g of hydrolyzate and 8.8g of Pt / C were added to a 500mL intermittent high-temperature and high-pressure reactor, heated to 350°C for 3 hours, and filtered while hot to obtain 54.9g of C 9 ~C 21 Long chain alkanes and 17.4 g aromatics.

Embodiment 3

[0042] Add 100g of microalgae oil and 100g of deionized water into a 500mL intermittent high-temperature and high-pressure reactor, start stirring, heat up to 260°C for hydrolysis reaction for 6h, after the hydrolysis reaction is completed, cool to room temperature, and obtain the upper hydrolyzate (C 10 ~C 22 fatty acid) 90.6g; 90.6g of hydrolyzate and 11.7g of Pt / C were added to a 500mL intermittent high-temperature and high-pressure reactor, heated to 350°C for 2 hours, and filtered while hot to obtain 58.3g of C 9 ~C 21 Long chain alkanes and 17.9 g aromatics.

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Abstract

The invention relates to a method for simultaneously preparing long-chain alkane and arene by taking microalgae oil as a raw material. The method comprises the following steps: (1) mixing the microalgae oil with water, then, heating for hydrolysis reaction, and performing treatment to obtain C10-C22 fatty acid; (2) adding the C10-C22 fatty acid and a catalyst into a high-temperature and high-pressure reactor together, heating to 280 to 380 DEG C for decarboxylation aromatization reaction for 1 to 7 hours, wherein the catalyst is Pt / C; (3) cooling a reaction product, dissolving with an organic solvent, and filtering to obtain a liquid product and a solid catalyst. According to the method disclosed by the invention, without adding any hydrogen source or solvent, high-yield long-chain alkane and arene, i.e., an important component of aircraft fuel, hard to obtain through other hydrodeoxygenation or Fischer-Tropsch synthesis are obtained from the microalgae oil, and the long-chain alkane and the arene separately reach more than 71.6 percent and 23.1 percent in yield.

Description

technical field [0001] The invention relates to the field of oil degradation, in particular to a method for simultaneously preparing long-chain alkanes and aromatics using microalgae oil as a raw material. Background technique [0002] With the rapid development of the aviation industry, by 2050, the amount of carbon dioxide produced by aircraft will exceed the sum of emissions from vehicles on the ground, and with the shrinking of oil resources, the price of crude oil will inevitably rise, putting airlines under enormous pressure for survival. Under pressure, people are working hard to find alternatives to traditional fossil fuels. Bio-jet fuel is aviation kerosene produced from renewable resources. 85% of the cost of bio-jet fuel is raw material costs, so it is very important to find suitable raw materials , The raw materials of bio-aviation fuel have been developed for 3 generations, which are animal and vegetable oils, agricultural and forestry wastes, and algae. [000...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02P30/20C10G3/40C10G3/47C10G3/52C10G2300/1014
Inventor 傅杰田秋容吕秀阳欧阳平凯
Owner ZHEJIANG UNIV
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