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Method for Extracting and Denitrifying Fuel Oil Using Polyethyleneimine

A polyethyleneimine, fuel oil technology, applied in the petroleum industry, refined hydrocarbon oil and other directions, can solve the problems of oil re-pollution, shortened catalyst service life, high hydrogen consumption, energy consumption, etc., and achieves uncomplicated equipment and appropriate molecular weight. , the effect of physical stability

Active Publication Date: 2019-10-22
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ethanolamine and fuel oil are also partially miscible, and N will be introduced into the oil during extraction, causing re-contamination of the oil
Therefore, for the conventional solvent extraction process, the fuel oil still has a high nitrogen content after extraction, making it necessary to use high-intensity catalytic hydrogenation technology to remove organic nitrogen, resulting in high hydrogen consumption and energy consumption. consumption, and shorten the service life of the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The average molecular weight of the extractant PEI is 10,000, the mass ratio of the extractant to the fuel is 0.2, the extraction temperature is 30°C, and the extraction time is 60 minutes. The fuel used is a simulated oil formed by mixing carbazole, toluene, and n-octane, and the content of toluene is 25wt%. , the initial nitrogen content of the fuel is 660μg / g, the upper oil phase is washed with water after extraction, and the nitrogen removal rate is 63.9%.

Embodiment 2

[0017] The average molecular weight of the extractant PEI is 1800, the mass ratio of the extractant to the fuel is 0.2, the extraction temperature is 30°C, and the extraction time is 60 minutes. The fuel used is a simulated oil formed by mixing carbazole, toluene and n-octane, and the content of toluene is 25wt%. , the initial nitrogen content of the fuel is 660μg / g, the upper oil phase is washed with water after extraction, and the nitrogen removal rate is 63.9%.

Embodiment 3

[0019] The average molecular weight of the extractant PEI is 10,000, the mass ratio of the extractant to the fuel is 0.2, the extraction temperature is 50°C, and the extraction time is 60 minutes. The fuel used is a simulated oil formed by mixing carbazole, toluene, and n-octane, and the content of toluene is 25wt%. , the initial nitrogen content of the fuel is 660μg / g, the upper oil phase is washed with water after extraction, and the nitrogen removal rate is 64.5%.

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Abstract

The invention provides a method for removing organic nitrogen compounds from fuel by using a polyethyleneimine solvent. Extraction operation is performed on high-boiling range diesel oil, coal liquidoil and the like by using polyethyleneimine as an extractant, wherein the mass ratio of the extractant to the fuel is 0.2 to 3, and finally, the denitrification rate can reach 60% to 99%. According tothe invention, selected polyethyleneimine is not insoluble with the fuel, thereby avoiding oil pollution, and alkaline organic nitrogen and non-alkaline organic nitrogen in the fuel can be removed simultaneously.

Description

technical field [0001] The invention relates to the technical fields of petrochemical and coal chemical industry, in particular to a method for removing organic nitrogen compounds from fuel oil by using polyethyleneimine solvent. Background technique [0002] Fuel oil is the most important source of energy, and the demand for fuel oil in my country is huge. Fuel oil is mainly processed from petroleum, and can also be converted from coal. Petroleum processing mainly uses processes such as atmospheric / vacuum distillation, catalytic cracking, and hydrogenation, and coal conversion mainly uses processes such as coal liquefaction and coal tar hydrogenation. For fuel oil, which contains a large amount of organic nitrogen, polluting gases such as NO will be released during combustion x Wait. These polluting gases are discharged into the atmosphere and easily form smog (PM2.5), causing serious environmental problems. Therefore, denitrification of fuel oil is a very important top...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G21/20
Inventor 姜兴茂朱爽高家俊熊春艳
Owner WUHAN INSTITUTE OF TECHNOLOGY
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