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A method for preparing bio-aviation hydrocarbon fuels by thermochemical conversion of triglycerides

A technology of thermochemical conversion and triglyceride, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrogenation process, etc., can solve the problem of single molecular structure, achieve the effect of increasing the content of aromatic hydrocarbons and reducing the acid value

Active Publication Date: 2019-10-15
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem to be solved: In order to solve the problem of partial fatty acids and single molecular structure in the existing pyrolysis oil, the present invention provides a method for preparing aviation hydrocarbon fuel by thermochemical conversion of triglyceride

Method used

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  • A method for preparing bio-aviation hydrocarbon fuels by thermochemical conversion of triglycerides
  • A method for preparing bio-aviation hydrocarbon fuels by thermochemical conversion of triglycerides
  • A method for preparing bio-aviation hydrocarbon fuels by thermochemical conversion of triglycerides

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Add 1500g soybean oil and 10wt.% sodium carbonate into the pyrolysis reaction kettle, start stirring, and the temperature of the rectification column rises to 280°C-300°C. When the temperature of the reaction kettle rises to 350°C, condensed liquid appears, and the temperature is gradually raised to 450°C. Keep until no lysis liquid flows out. Atmospheric distillation is carried out on the cracked liquid, and fractions at 90°C to 270°C are collected. Take 80g fraction and 5wt.% HZSM-5 (Si / Al=27) catalyst in a high-pressure reactor, start stirring, the reactor is heated to 350°C, react for 6h, and remove the catalyst by centrifugation. Take 40g of the product from the previous step and 5wt.% Pd / C catalyst in a high-pressure reactor, feed hydrogen gas at 6MPa, start stirring, heat the reactor to 200°C, and react for 6 hours to obtain a mixture containing alkanes, aromatic hydrocarbons and naphthenes , which is bio-aviation fuel.

Embodiment 2

[0026] Add 1500g waste oil and 5wt.% sodium carbonate into the pyrolysis reaction kettle, start stirring, and the temperature of the rectification column rises to 280°C-300°C. When the temperature of the reaction kettle rises to 350°C, condensed liquid appears, and the temperature is gradually raised to 450°C. Keep until no lysis liquid flows out. Atmospheric distillation is carried out on the cracked liquid, and fractions at 90°C to 270°C are collected. Take 80g fraction and 5wt.% HZSM-5 (Si / Al=27) catalyst in a high-pressure reactor, start stirring, the reactor is heated to 350°C, react for 8h, and remove the catalyst by centrifugation. Take 40g of the product from the previous step and 5wt.% Pd / C catalyst in a high-pressure reactor, feed hydrogen gas at 6MPa, start stirring, heat the reactor to 200°C, and react for 6 hours to obtain a mixture containing alkanes, aromatic hydrocarbons and naphthenes , which is bio-aviation fuel.

Embodiment 3

[0028] Add 1500g soybean oil and 5wt.% sodium carbonate into the pyrolysis reactor, start stirring, and the temperature of the rectification column rises to 260°C-280°C. When the reactor heats up to 350°C, condensed liquid appears, and gradually heats up to 420°C. Keep until no lysis liquid flows out. Atmospheric distillation is carried out on the cracked liquid, and fractions at 90°C to 270°C are collected. Take 80g fraction and 5wt.% HZSM-5 (Si / Al=27) catalyst in a high-pressure reactor, start stirring, the reactor is heated to 350°C, react for 2h, and remove the catalyst by centrifugation. Take 40g of the product from the previous step and 5wt.% Pd / C catalyst in a high-pressure reactor, feed hydrogen gas at 4MPa, start stirring, heat the reactor to 200°C, and react for 4 hours to obtain a mixture containing alkanes, aromatic hydrocarbons and naphthenes , which is bio-aviation fuel.

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Abstract

The invention provides a method for preparing biological aviation hydrocarbon type fuel oil through thermochemical conversion of triglyceride. The method comprises the following steps: carrying out catalytic pyrolysis: adding the triglyceride and an alkaline catalyst into a pyrolysis reaction kettle and carrying out the catalytic pyrolysis to obtain pyrolysis oil; carrying out normal-pressure distillation: adding the obtained pyrolysis oil into a three-opening flask and carrying out the normal-pressure distillation; collecting fractions; carrying out aromatization: adding the obtained fractions and an aromatization catalyst into a high-pressure reaction kettle; starting to stir and heating and reacting; after reaction is finished, centrifuging to remove the catalyst to obtain an aviation hydrocarbon type fuel oil component which takes alkane and aromatic hydrocarbon as main components; carrying out hydrogenation: adding the aviation hydrocarbon type fuel oil component and a hydrogenation catalyst into the high-pressure reaction kettle; introducing hydrogen gas and starting to stir; heating and reacting; after reaction is finished, filtering to remove the catalyst, so as to obtain aliquid mixture which takes the alkane, the aromatic hydrocarbon and cycloalkane as main components, wherein the liquid mixture is the biological aviation hydrocarbon type fuel oil. The hydrocarbon type fuel oil produced by the method is the mixture of the alkane, the aromatic hydrocarbon and the cycloalkane; the components of the hydrocarbon type fuel oil are the same as that of aviation fuel oiland the property of the hydrocarbon type fuel oil is similar with that of the aviation fuel oil.

Description

technical field [0001] The invention belongs to the field of high-value utilization of biomass energy, and in particular relates to a method for preparing bio-aviation hydrocarbon fuel by thermochemical conversion of triglyceride. Background technique [0002] At present, my country's aviation fuel comes from petrochemical refining, but the yield components of aviation fuel only account for about 10% of the total crude oil. Aviation fuel is an important guarantee for the development of my country's civil aviation. Under the dual pressure of depletion of petroleum resources and carbon emission reduction, the development of alternative bio-aviation fuels using biomass as raw material has attracted widespread attention. Triglycerides, as the main components of bio-oils (vegetable oils and animal fats), have a chemical structure closer to that of petroleum than other biomass. The most common conversion method of triglycerides is transesterification to produce biodiesel for veh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/04
Inventor 徐俊明李芳琳蒋剑春刘朋翟巧龙王霏
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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