Desulfurizing agent for removing dibenzothiophene and 4, 6-dimethyl dibenzothiophene in oil product as well as preparation method and application of desulfurizing agent

A technology of dimethyl dibenzothiophene and dibenzothiophene, which is applied in the field of oil desulfurization in the petrochemical field, can solve the problems of cost increase, hydrogen consumption increase, octane number reduction, etc., and achieve the effect of good application potential

Active Publication Date: 2020-11-20
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the deep hydrogenation is continued, the olefin content in the oil will increase, causing the octane

Method used

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  • Desulfurizing agent for removing dibenzothiophene and 4, 6-dimethyl dibenzothiophene in oil product as well as preparation method and application of desulfurizing agent
  • Desulfurizing agent for removing dibenzothiophene and 4, 6-dimethyl dibenzothiophene in oil product as well as preparation method and application of desulfurizing agent
  • Desulfurizing agent for removing dibenzothiophene and 4, 6-dimethyl dibenzothiophene in oil product as well as preparation method and application of desulfurizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Using 3,5-bis(trifluoromethyl)pyrazole as raw material, dissolve 1.02g of 3,5-bis(trifluoromethyl)pyrazole in 4.5ml of concentrated sulfuric acid under ice-bath conditions, then drop slowly Add 2ml fuming HNO 3 , mix well to dissolve. Then react at 122°C for 15 hours; then cool naturally, pour the reaction solution into 300mL of ice water and let it stand for 4 hours, a white solid appears, then collect it by filtration, and keep it at room temperature for 48 hours to dry. Obtain pyrazole organic monomer (CF 3 ) 2 NO 2 PzH, 19 See the FNMR diagram for details image 3 , whose infrared spectrum is detailed in figure 1 .

[0031] Dissolve the pyrazole organic monomer 3,5-bis(trifluoromethyl)pyrazole obtained above in toluene (according to 1g of pyrazole organic monomer corresponds to 40ml of toluene), and add 0.84g of 1g monomer Ag 2 O, followed by reflux at 100°C for 5 hours. Filtrate while it is hot, cool naturally, a large amount of white crystals are precipi...

experiment example 1

[0035] Weigh 110 mg of desulfurizer, pour it into 30 ml of DBT and DMDBT solutions with a sulfur content of 100 mg / L, stir at room temperature for 50 hours, then centrifuge it, and test the residual thiophene concentration in the supernatant by ultraviolet absorption spectroscopy. The test results are as follows: Table 1 shows.

experiment example 2

[0037] Weigh 11 mg of desulfurizer, pour it into 30 ml of DBT and DMDBT solutions with a sulfur content of 10 mg / L, stir at room temperature for 50 hours, then centrifuge it, and test the residual thiophene concentration in the supernatant by ultraviolet absorption spectroscopy. The test results are as follows: Table 1 shows.

[0038] Table 1

[0039] The initial concentration Equilibrium concentration Desulfurization rate The initial concentration Equilibrium concentration Desulfurization rate DBT 100mg / L 2.5mg / L 97.5％ 10mg / L 1.3mg / L 87％ DMDBT 100mg / L 1.2mg / L 98.8％ 10mg / L 1.1mg / L 89％

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PUM

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Abstract

The invention belongs to the technical field of oil product desulfurization in the petrochemical field, and particularly relates to a novel desulfurizing agent for efficiently removing dibenzothiophene (DBT) and 4, 6-dimethyldibenzothiophene (DMDBT) in an oil product and a preparation method of the desulfurizing agent. Pyrazole organic monomer 3, 5-bis (trifluoromethyl)-4-nitropyrazole reacts withsilver oxide, and the desulfurizing agent is prepared. The invention provides a novel pyrazole organic monomer, and the novel oil product desulfurizing agent is prepared through a simple chemical reaction. The desulfurizing agent has very low solubility in isooctane simulated oil products, and provides guarantee for recycling. The desulfurizing agent has very high deep desulfurization capacity for dibenzothiophene (DBT) and 4, 6-dimethyldibenzothiophene (DMDBT) which are difficult to remove, and has very good application potential for solving the environmental problem caused by fuel oil sulfur compounds.

Description

technical field [0001] The invention belongs to the oil product desulfurization technology in the petrochemical field, and in particular relates to a novel and efficient desulfurizer for removing dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) in oil products and a preparation method thereof and apply. Background technique [0002] With the rapid development of my country's social economy, the number and frequency of use of transportation vehicles such as trucks, passenger cars, and private cars are increasing year by year, and the amount of sulfide gas emitted by them is increasing, which seriously pollutes the atmospheric environment and water system environment, which is inevitable. It seriously affects the normal life and health of human beings. In gasoline and other oil products, SO produced after the combustion of sulfur compounds 2 Sulfur and oxygen compounds seriously affect air quality and are also the direct cause of acid rain. Therefore, the dema...

Claims

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Application Information

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IPC IPC(8): C07D231/16C10G45/02
CPCC07D231/16C10G45/02
Inventor 杨光冯孝权曲璐璐张亚涛
Owner ZHENGZHOU UNIV
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