Method of preparing long chain alkane for jet fuel by virtue of sugar platform compound

A technology for aviation fuel and long-chain alkanes, which is used in the preparation of liquid hydrocarbon mixtures, biological raw materials, and processing of hydrocarbon oils, etc., to achieve the effect of reducing energy consumption

Active Publication Date: 2015-05-27
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method involves the addition of acetonide, which is usually difficult to obtain from sug

Method used

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  • Method of preparing long chain alkane for jet fuel by virtue of sugar platform compound
  • Method of preparing long chain alkane for jet fuel by virtue of sugar platform compound
  • Method of preparing long chain alkane for jet fuel by virtue of sugar platform compound

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Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1: condensation reaction

[0048]

[0049] Add 9.6 grams of furfural and 11.5 grams of levulinic acid into a three-necked flask (the molar ratio of furfural to levulinic acid is 1:1), then add 20 mL of 7.5 mol / L sodium hydroxide solution, and magnetically Sub-stirring, the reaction stopped after 4h. The reacted solution was neutralized by sulfuric acid, filtered, and washed three times with deionized water. After the filtrate is analyzed by liquid chromatography, the conversion rate of furfural reaches 95%, and the conversion rate of levulinic acid reaches 98%. The filtered solid was analyzed by nuclear magnetic resonance as the target condensation product (C 10 long-chain oxygen-containing compounds), and the mass yield of the condensation product is calculated to reach 92% after drying treatment.

Embodiment 2

[0050] Embodiment 2: condensation reaction

[0051]

[0052] Add 9.6 grams of furfural and 11.5 grams of levulinic acid into a three-necked flask (the molar ratio of furfural to levulinic acid is 1:1), then add 20 mL of 7.5 mol / L potassium hydroxide solution, and magnetically Sub-stirring, the reaction stopped after 4h. The reacted solution was neutralized by sulfuric acid, filtered, and washed three times with deionized water. After the filtrate is analyzed by liquid chromatography, the conversion rate of furfural reaches 93%, and the conversion rate of levulinic acid reaches 97%. The filtered solid was analyzed by nuclear magnetic resonance as the target condensation product (C 10 long-chain oxygen-containing compounds), and the mass yield of the condensation product is calculated to reach 90% after drying treatment.

Embodiment 3

[0053] Embodiment 3: condensation reaction

[0054]

[0055] Add 19.2 grams of furfural and 11.5 grams of levulinic acid into a three-necked flask (the molar ratio of furfural to levulinic acid is 2:1), then add 20 mL of 7.5 mol / L sodium hydroxide solution, and magnetically Sub-stirring, the reaction stopped after 4h. The reacted solution was neutralized by sulfuric acid, filtered, and washed three times with deionized water. After the filtrate is analyzed by liquid chromatography, the conversion rate of furfural reaches 90%, and the conversion rate of levulinic acid reaches 99%. The filtered solid was analyzed by nuclear magnetic resonance as the target condensation product (C 15 long-chain oxygenates), 1 HNMR diagram and 13 The CNMR diagrams are as figure 1 and 2 shown. got C 10 The mass yield of the condensation product after the drying treatment of the long-chain oxygenate reaches 92%.

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Abstract

The invention discloses a method of preparing long chain alkane for a jet fuel by virtue of a sugar platform compound. The method comprises the following steps: carrying out aldol condensation on the sugar platform compound in an aqueous solution under catalysis of alkali to generate a long chain oxygenated compound with ten to seventeen carbons; and then carrying out hydrogenation under the action of a metal catalyst, and finally carrying out hydrogenation, deoxidation, isomerization, cracking and cyclization under the action of the metal catalyst to generate a long chain n-alkane/isoparaffin with eight to fifteen carbons. According to the method disclosed by the invention, other organic solvents are prevented from being used, and in the condensation process, condensation products are separated from one another, a solid condensation product is directly separated from the aqueous solution, and the energy consumption is lowered; a solid product is dissolved by an alcohol solvent, the subsequent hydrogenation and deoxidation processes are carried out on the solid product, and the alcohol solvent can be provided by sugar/sugar alcohol hydrogenolysis; meanwhile, hydrogen needed by the technological process can be directly provided by the reforming process of a sugar alcohol solution, and the C component and the H component in a biological jet fuel and the solvent used in the process can be from biomass materials.

Description

Technical field: [0001] The invention relates to a method for preparing long-chain alkanes, in particular to a method for preparing long-chain alkanes for aviation fuel from sugar platform compounds. Background technique: [0002] Bio-aviation fuel is derived from renewable biomass resources. Compared with traditional aviation fuel, bio-aviation fuel is similar in molecular structure to traditional petroleum-based jet fuel (the main component is C 8 -C 16 long-chain alkanes) with low sulfur content, high flash point, low post-combustion emissions, and does not require replacement of currently used engines and fuel systems. Compared to other fossil fuels, the CO of bio-aviation fuel 2 Emissions are life cycle neutral. Therefore, the development of bio-aviation fuel preparation technology is becoming more and more popular, and it is an important way to achieve the goals of aviation industry emission reduction and green sustainable circular development. [0003] At present,...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02P30/20C10G3/00C10G3/42C10G3/52C10G2300/202
Inventor 陈伦刚马隆龙王铁军张兴华刘琪英张琦
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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