Desulfurizing method using three-component eutectic agent to extract

A three-component, deep eutectic technology, applied in the treatment of hydrocarbon oil, petroleum industry, refined hydrocarbon oil, etc., can solve the problems of poor recycling effect, high mutual solubility of oil products, low desulfurization rate, etc., and achieve low environmental pollution , low cost, and simple raw materials

Active Publication Date: 2017-11-03
QINGDAO UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the disadvantages of low desulfurization rate of the traditional desulfurization method, difficulty in removing thiophene sulfides in fuel oil, and the existing two-component deep eutectic desulfurizer has large mutual solubility with oil products and poor recycling e

Method used

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  • Desulfurizing method using three-component eutectic agent to extract

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Experimental program
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Effect test

Embodiment 1

[0028] Weigh 32.2g (0.10mol) tetrabutylammonium bromide (TBAB), 14.8g n-butanol (n-BA) and 6.3g (0.10mol) concentrated nitric acid (65% HNO 3 ), was added to a 100mL round-bottomed flask, heated and stirred at 90°C for 1h, and a wine-red oily liquid was formed, which was the synthesized low-temperature eutectic solvent [TBAB][n-BA][HNO 3 ].

Embodiment 2

[0030] Weigh 32.2g (0.10mol) tetrabutylammonium bromide (TBAB), 14.8g (0.20mol) n-butanol (n-BA) and 3.6g (0.10mol) concentrated hydrochloric acid (36% HCl), add to 100mL In a round-bottomed flask, heated and stirred at 90°C for 1 h, a bright yellow oily liquid was formed, which was the synthesized low-temperature eutectic solvent [TBAB][n-BA][HCl].

Embodiment 3

[0032]Weigh 32.2g (0.10mol) tetrabutylammonium bromide (TBAB), 14.8g (0.20mol) n-butanol (n-BA) and 13.8g (0.10mol) salicylic acid (OHBA), add to 100mL In a round-bottomed flask, heat and stir at 90°C for 1 h to form a wine-red oily liquid, which is the synthesized low-temperature eutectic solvent [TBAB][n-BA][OHBA].

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Abstract

The invention discloses a method for desulfurizing fuel by extracting of a three-component eutectic agent including alkyl alcohol, tetra-alkyl ammonium halide and protonic acid. The method comprises the following steps: mixing the three-component eutectic agent with the catalyst-to-oil of 1: 1-1: 3 with fuel with the sulfur content of 100-600 ppm; and extracting for 5-30 minutes under the conditions that the stirring speed is 440-880 r/min and the temperature is 20-30 DEG C. The protonic acid is introduced as a third component, the desulfurization degree of the eutectic agent is increased remarkably, the mutual solubility of the eutectic agent to the fuel is reduced remarkably, and efficient separation and circulation of a desulfurizing agent are realized. The desulfurizing method is simple to operate, easy to realize, low in cost and low in environmental pollution, and has good application prospect.

Description

technical field [0001] The present invention relates to a new method for desulfurization of fuel oil. Specifically, a three-component low-temperature eutectic solvent composed of alkyl alcohol, tetraalkylammonium halide and protonic acid is used as an extraction agent to extract and remove fuel oil efficiently. A method for thiophene sulfides. Background technique [0002] Sulfur-containing compounds in oil products will destroy the catalytic mechanism in motor vehicles, cause waste of resources and discharge of pollutants, and the conversion products of sulfur-oxygen compounds will cause environmental problems such as acid rain and air smog, endangering the health of humans and animals. In the face of increasingly stringent environmental standards, developed countries such as Europe and the United States have successively implemented Euro V standards, that is, to achieve zero-sulfur emissions from fuel. At present, although my country has promulgated the National V standar...

Claims

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Application Information

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IPC IPC(8): C10G21/06C10G21/20C10G21/16
CPCC10G21/06C10G21/16C10G21/20C10G2300/202
Inventor 于凤丽解从霞袁冰于世涛朱国强
Owner QINGDAO UNIV OF SCI & TECH
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