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Mercaptan thioetherification method

A technology of thiol thioether and alcohol thioether, applied in the field of reducing thiol content in gasoline

Active Publication Date: 2019-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above patents are mainly aimed at the removal of low content and small molecular mercaptans, and do not involve the removal of higher content and higher molecular mercaptans at low temperatures.

Method used

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  • Mercaptan thioetherification method
  • Mercaptan thioetherification method

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Take 5 grams of ionic liquid composed of anhydrous aluminum trichloride and diethylamine hydrochloride, wherein the molar ratio of anhydrous aluminum trichloride and diethylamine hydrochloride is 2:1, and put it into a three-port tank equipped with stirring and reflux devices. In the flask, 12.5 grams of mercaptan-containing hydrocarbon materials were added and reacted for 60 minutes at room temperature (20° C.). After the reaction, samples were taken and analyzed. The results are shown in Table 1.

Embodiment 2

[0018] Get 5 grams of ionic liquid composed of anhydrous aluminum trichloride and 1-butylpyridine, wherein the molar ratio of anhydrous aluminum trichloride and diethylamine hydrochloride is 2:1, put it into a mixing and reflux device In the three-necked flask, add 100 grams of mercaptan-containing hydrocarbon materials, and react at 40° C. for 30 minutes. After the reaction, samples are taken for analysis. The results are shown in Table 1.

Embodiment 3

[0020] Get 5 grams of ionic liquid composed of zinc dichloride and diethylamine hydrochloride, wherein the molar ratio of zinc dichloride and diethylamine hydrochloride is 6:1, put it into a three-necked flask equipped with a stirring and reflux device, add 15 grams of mercaptan-containing hydrocarbon materials were reacted at 60° C. for 30 minutes, and samples were taken for analysis after the reaction. The results are shown in Table 1.

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Abstract

The invention relates to a thiolation method of thiol. Thiol is converted into thioether at the room temperature to 80 DEG C and under the normal pressure with a functionalized ionic liquid comprisingalkyl pyridine, an imidazole or ethylamine nitrogen-containing compound and metallic or non-metallic halide used as a catalyst, wherein the molar ratio of the metallic or non-metallic halide to the imidazole or ethylamine nitrogen-containing compound is (1:7)-(7:1), the dosage of the catalyst is 5%-40wt% of the quantity of raw materials, and the reaction is performed for 10-60 min. With the adoption of the technical scheme, the content of thiol in gasoline is reduced and the method can be applied to the field of thiolation of thiol.

Description

technical field [0001] The invention relates to a method for thioetherification of mercaptan, in particular to a method for reducing the content of mercaptan in gasoline. Background technique [0002] In recent years, global crude oil prices have remained high, ethylene production capacity has grown rapidly, and the demand for aromatics is strong. The diversification, heavy and inferior quality of pyrolysis raw materials has become the norm, which will inevitably lead to the excessive content of impurities in pyrolysis gasoline, especially the content of organic sulfur, which affects the activity and life of traditional catalysts. [0003] In the field of deep desulfurization of gasoline and diesel, foreign countries have successively developed new technologies for the production of ultra-low sulfur gasoline. Among them, the CD Hydro&CDHDS process developed by CD TECH in the United States and the Prime G+ process developed by Axens in France have broad potential. Applicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/04C10G45/14B01J31/02
CPCB01J31/0279B01J31/0282B01J31/0284C10G45/04C10G45/14C10G2300/202
Inventor 江兴华刘仲能王德举王燕波朱瑾
Owner CHINA PETROLEUM & CHEM CORP
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