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Method for extracting, reducing and desulfurizing fuel oil in deep eutectic solvent

A deep eutectic solvent and fuel oil technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrogenation process, etc., to achieve the effect of improving efficiency, small particle size and large specific surface area

Inactive Publication Date: 2020-08-04
SHANGRAO NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To increase NaBH 4 Reduce the efficiency of desulfurization and solve the problem of organic solvents. The present invention introduces the deep eutectic solvent into NaBH 4 Reductive desulfurization process

Method used

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  • Method for extracting, reducing and desulfurizing fuel oil in deep eutectic solvent
  • Method for extracting, reducing and desulfurizing fuel oil in deep eutectic solvent
  • Method for extracting, reducing and desulfurizing fuel oil in deep eutectic solvent

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Embodiment 1

[0029] The deep eutectic solvent was synthesized with tetrabutylammonium chloride as the hydrogen bond acceptor and polyethylene glycol as the hydrogen bond donor in a molar ratio of 1:2. Fuel oil, deep eutectic solvent, NaBH 4 After mixing in proportion, add it to the reactor, wherein the volume ratio of deep eutectic solvent to fuel oil is 1.5:1, NaBH 4 The molar ratio of the fuel to the sulfur in the fuel is 12:1; then, slowly mix the NiCl 2 ·6H 2 O is added to the reactor for desulfurization reaction, the added NiCl 2 ·6H 2 The molar ratio of O to sulfur in the fuel oil was 3:1; after reacting for 60 minutes, the mixture in the reactor was separated, and the upper oil phase was taken to measure the sulfur content, and the desulfurization rate of the fuel oil was calculated to be 97.3%.

Embodiment 2

[0031] A deep eutectic solvent was synthesized with tetrabutylammonium chloride as the hydrogen bond acceptor and ethylene glycol as the hydrogen bond donor at a molar ratio of 1:2. Fuel oil, deep eutectic solvent, NaBH 4 After mixing in proportion, add it to the reactor, wherein the volume ratio of deep eutectic solvent to fuel oil is 1.5:1, NaBH 4 The molar ratio of the fuel to the sulfur in the fuel is 12:1; then, slowly mix the NiCl 2 ·6H 2 O is added to the reactor for desulfurization reaction, the added NiCl 2 ·6H 2 The molar ratio of O to sulfur in the fuel oil was 3:1; after reacting for 60 minutes, the mixture in the reactor was separated, and the upper oil phase was taken to measure the sulfur content, and the desulfurization rate of the fuel oil was calculated to be 95.2%.

Embodiment 3

[0033] A deep eutectic solvent was synthesized with tetrabutylammonium chloride as the hydrogen bond acceptor and glycerol as the hydrogen bond donor at a molar ratio of 1:2. Fuel oil, deep eutectic solvent, NaBH 4 After mixing in proportion, add it to the reactor, wherein the volume ratio of deep eutectic solvent to fuel oil is 1.5:1, NaBH 4 The molar ratio of the fuel to the sulfur in the fuel is 12:1; then, slowly mix the NiCl 2 ·6H 2 O is added to the reactor for desulfurization reaction, the added NiCl 2 ·6H 2 The molar ratio of O to sulfur in the fuel oil was 3:1; after reacting for 60 minutes, the mixture in the reactor was separated, and the upper oil phase was taken to measure the sulfur content, and the desulfurization rate of the fuel oil was calculated to be 90.2%.

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Abstract

The invention provides a method for extracting, reducing and desulfurizing fuel oil in a deep eutectic solvent. The method comprises the steps: proportionally mixing the fuel oil, the deep eutectic solvent and sodium borohydride, and adding the mixture into a reactor; then, slowly adding nickel salt into the reactor while stirring, and carrying out desulfurization reaction; and after the reactionis finished, separating the mixture in the reactor to obtain an upper oil phase, namely low-sulfur fuel oil. According to the method, the deep eutectic solvent is used as a reaction medium in the NaBH4 reduction desulfurization process, the problems existing in an organic solvent can be avoided, nickel boride particles generated through the reaction of sodium borohydride and nickel salt are smallin particle size and large in specific surface area, and the NaBH4 reduction desulfurization efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of fuel oil desulfurization, in particular to a method for extracting and reducing desulfurization of fuel oil in a deep eutectic solvent. Background technique [0002] There are many hazards of sulfur compounds in fuel oil, such as SO produced by combustion 2 Cause acid rain, lead to catalyst poisoning in three-way catalytic converters of motor vehicles, cause corrosion of petroleum processing equipment, and so on. As a result, most countries have instituted increasingly stringent fuel sulfur standards. At present, the fuel oil desulfurization process commonly used in industry is hydrodesulfurization (Hydrodesulfurization, HDS), although the HDS process can obtain high desulfurization efficiency, but the operating conditions are harsh, and the benzothiophene and dibenzothiophene sulfides in fuel oil The desulfurization effect is not good, and it will reduce the octane number of the oil. Therefore, various non-hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/04
CPCC10G67/04
Inventor 舒陈华刘林海刘训正蔡水萍
Owner SHANGRAO NORMAL UNIV
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