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Method for preparing aviation liquid fuel by using biodiesel

A technology of biodiesel and liquid fuels, which is applied in the direction of preparation of biofuels, biological raw materials, liquid hydrocarbon mixtures, etc., to achieve good combustion performance, complete combustion, and good safety and stability.

Inactive Publication Date: 2014-10-15
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the conversion of biodiesel (fatty acid methyl ester) into aviation liquid fuel by electrolytic deoxygenation technology

Method used

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  • Method for preparing aviation liquid fuel by using biodiesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Electrolytic synthesis: to feedstock biodiesel (fatty acid methyl ester, C 14 -C 20 ) into 2 times the volume of water-methanol mixture, and 3% by weight of raw material sodium hydroxide was added to maintain the temperature at 45°C, so that the fatty acid methyl ester in biodiesel was hydrolyzed into fatty acid / fatty acid salt. Then, the mixed solution after hydrolysis is electrolyzed, and the anode uses a platinum electrode, and the current density is controlled to be 150mA / cm 2 , long carbon chain alkanes will be precipitated on the surface of the platinum electrode, while the oxygen in the raw material will escape in the form of carbon dioxide. At the same time, the high value-added hydrogen precipitated on the electrode surface can be widely used in related chemical industries. Wherein, the volumes of water and methanol in the water-methanol mixture are the same.

[0019] Composition list of fatty acid methyl esters in biodiesel feedstock in this example

[002...

Embodiment 2

[0024] Electrolytic synthesis: add 3 times the volume of water-methanol mixture to the raw material biodiesel, and add 5% by weight of raw material sodium hydroxide to maintain the temperature at 60°C, so that the fatty acid methyl ester in the biodiesel is hydrolyzed into fatty acid / fat salt. Then, the mixed solution after hydrolysis is electrolyzed, and the anode uses a platinum electrode, and the current density is controlled to be 200mA / cm 2 , long carbon chain alkanes will be precipitated on the surface of the platinum electrode, and the oxygen in the raw material will escape in the form of carbon dioxide. Wherein, the volume ratio of water and methanol in the water-methanol mixture is 2:1.

[0025] Composition list of fatty acid methyl esters in biodiesel feedstock in this example

[0026] Methyl ester component

Percentage wt.%

C 14 :0

0.71

C 16 :0

0.66

C 16 :1

1.00

C 18 :0

1.43

[0027] C 18 :1 ...

Embodiment 3

[0031] Electrolytic synthesis: Add 2 times the volume of water-methanol mixture to the raw material biodiesel, and add 2.5% by weight of raw material sodium hydroxide to maintain the temperature at 70°C, so that the fatty acid methyl ester in the biodiesel is hydrolyzed into fatty acids / fats salt. Then, the mixed solution after hydrolysis is electrolyzed, and the anode uses a glassy carbon electrode, and the current density is controlled to be 180mA / cm 2 , long carbon chain alkanes will be precipitated on the surface of the platinum electrode, and the oxygen in the raw material will escape in the form of carbon dioxide. Wherein, the volume ratio of water and methanol in the water-methanol mixture is 1.5:1.

[0032] Composition list of fatty acid methyl esters in biodiesel feedstock in this example

[0033] Methyl ester component

Percentage wt.%

C 14 :0

--

C 16 :0

--

C 16 :1

0.92

C 18 :0

3.56

C 18 :1

82.60

...

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Abstract

The invention relates to a method for preparing an aviation liquid fuel by using biodiesel (fatty acid methyl ester). The method comprises the following steps: adding a water-methanol mixed liquid having a volume 2-3 times the volume of biodiesel to a raw material biodiesel, adding an alkali accounting for 1-5% of the weight of the biodiesel, hydrolyzing at 30-100DEG C, and carrying out electrolytic synthesis in an electrolytic tank to obtain long carbon chain alkanes; carrying out catalytic cracking on the long carbon chain alkanes under normal pressure at 300-450DEG C under a space velocity of 0.2-2.0h<-1> under the action of a catalyst; carrying out an isomerization reaction under normal pressure at 220-350DEG C under a space velocity of 0.5-2.5h<-1> with mordenite as a catalyst; and distilling a product obtained after the isomerization reaction, and collecting a fraction at a cutting temperature of 105-240DEG C to obtain a refined aviation fuel blend component. The method has the advantages of simple and stable process, mild reaction conditions, low energy consumption and high product yield.

Description

technical field [0001] The invention relates to the field of clean energy production, in particular to a method for preparing aviation liquid fuel by using biodiesel. Background technique [0002] At present, the air transport industry is playing an increasingly important role in the process of economic globalization. The number of air transport of personnel and cargo by air is increasing at an annual rate of 4.9% and 5.3%, and the use of aviation fuel also accounts for 8% of the total output of petroleum products. %. According to statistics, in 2008, the global air transport industry emitted 677 million tons of carbon dioxide. Although the air transport industry's carbon dioxide emissions accounted for only 2% of the global total, as a cross-regional global aviation industry, its impact is still significant. Can not be ignored. In order to reduce the impact of aviation emissions on the environment, the International Air Transport Association (IATA) has committed to achiev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00C10G55/06
CPCY02E50/10Y02P30/20Y02T50/678
Inventor 刘广瑞吴晋沪王辛影武景丽
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI