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Preparation method of acylamino III type deep eutectic solvent and application of acylamino III type deep eutectic solvent in fuel oil extraction desulfurization

A technology of low eutectic solvent and amide group, which is used in solvent extraction of liquid solution, refined hydrocarbon oil, petroleum industry, etc., can solve the problems of complex synthesis route of ionic liquid, long reaction period and high synthesis cost, and achieves green preparation process conditions. , Simple operation, low cost effect

Pending Publication Date: 2021-07-09
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional organic solvents are volatile and most organic compounds are highly toxic. However, the disadvantages of ionic liquids, such as complex synthesis routes, long reaction cycles, expensive raw materials, and high synthesis costs, limit the industrial application of ionic liquids.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add EA and TOAB into a 100mL round-bottomed flask at a molar ratio of 3:1, stir magnetically for 0.5h in a constant temperature water bath at 100°C, and cool to room temperature naturally after the reaction is complete to obtain a uniform and transparent deep eutectic solvent (DES1).

[0019] Add 0.5g of deep eutectic solvent DES1[TOAB / EA] to 2.5g (DBT) of oil with a sulfur content of 10ppm, stir at 0°C for 1min and stop. At this time, the deep eutectic solvent is in the lower layer and the oil is in the upper layer.

[0020] GC-FID was used to detect the content of DBT in the oil, and the removal rate of the oil was calculated to be 36.3%.

Embodiment 2

[0022] Add TPA and TMAC into a 100mL round-bottomed flask at a molar ratio of 1:1, and magnetically stir for 4 hours under the condition of a constant temperature water bath at 50°C. ).

[0023] Add 1g of deep eutectic solvent DES2[TMAC / TPA] to 2.5g (4-MDBT) of oil with a sulfur content of 1000ppm, stir at 25°C for 30 minutes and stop, at this time the deep eutectic solvent is in the lower layer and the oil is in the upper layer .

[0024] GC-FID was used to detect the content of 4-MDBT in the oil, and the removal rate of the oil was calculated to be 55.2%.

Embodiment 3

[0026] CPL and TBAF were added into a 100mL round-bottomed flask at a molar ratio of 0.5:1, and magnetically stirred for 4 hours in a constant temperature water bath at 0°C. After the reaction was completed, it was naturally cooled to room temperature to obtain a transparent deep eutectic solvent (DES3 ).

[0027] Add 5g of deep eutectic solvent DES3[TBAF / CPL] into 2.5g (4,6-DMDBT) oil with a sulfur content of 1000ppm, stir at 80°C for 3h and then stop. At this time, the deep eutectic solvent is in the lower layer, and the oil on the upper level.

[0028] GC-FID was used to detect the content of 4,6-DMDBT in the oil, and the removal rate of the oil was calculated to be 81.6%.

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Abstract

The invention belongs to the technical field of extraction desulfurization synthesis extraction agents, and relates to a deep eutectic solvent extraction agent, in particular to a preparation method of an acylamino III type deep eutectic solvent. The preparation method comprises the steps of stirring and heating amide serving as a hydrogen bond donor and quaternary ammonium salt in an oil bath at the temperature of 0-100 DEG C for 0.5-8 hours, standing and cooling to room temperature to obtain a uniform and transparent liquid, namely, the acylamino III type deep eutectic solvent, wherein the molar ratio of the amide to the quaternary ammonium salt is (0.5-3): 1. The other purpose of the invention is to apply the prepared acylamino III-type eutectic solvent to fuel oil extraction desulfurization. The preparation process is mild and green in condition, simple and convenient to operate, cheap in reaction raw materials and low in cost, and the obtained deep-eutectic solvent has relatively high desulfurization performance, is simple and convenient to separate from model oil after extraction is finished, and can be recycled. The prepared eutectic solvent is high in desulfurization efficiency, is completely immiscible with model oil, and overcomes the limitations of high synthesis energy consumption, technical difficulty and the like of a traditional desulfurizer.

Description

technical field [0001] The invention belongs to the technical field of synthetic extraction agent for extraction and desulfurization, and relates to a deep eutectic solvent extraction agent, in particular to a preparation method of an amide group III type deep eutectic solvent and its application in fuel oil extraction and desulfurization. Background technique [0002] The sulfides in fuel oil are converted into sulfur oxides (SO x ), seriously affecting the environment and human health. In order to protect the living environment, achieve green and sustainable development, and reduce the sulfur content emitted into the air from fuel combustion, governments of various countries have formulated strict fuel sulfur content standards. In 2009, the European Parliament controlled the maximum sulfur content in fuel oil to 10ppm. The Chinese government is also trying to catch up with the fuel oil development level of other advanced countries. From the implementation of the National ...

Claims

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Application Information

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IPC IPC(8): B01D11/04C10G21/20
CPCB01D11/04C10G21/20C10G2300/202
Inventor 蒋伟徐丽仙刘辉李宏平王超朱文帅李华明
Owner JIANGSU UNIV