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Desulfurization method for gasoline

A gasoline and element technology, applied in the petroleum industry, refined hydrocarbon oil, etc., can solve the problems that have not yet been seen, and achieve the effects of good desulfurization effect, high desulfurization rate and reduced operating cost.

Active Publication Date: 2008-12-03
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, there has been no report on the use of copper or cerium-doped MCM-48 mesoporous molecular sieves as adsorbents for the deep removal of sulfides in gasoline

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mix 2.9392g of CTAB template agent, 0.28g of NaOH and 15mL of distilled water, stir at 40°C until clear, then slowly drop in 3g of silicon source TEOS, and continue stirring for about 0.5 hours to obtain a milky white sol. 0.0179gCu(NO 3 ) 2 ·3H 2 O was dissolved in a small amount of water, and the copper ammonia solution obtained by adding 25% concentrated ammonia water dropwise until the precipitation disappeared was added to the above-mentioned sol, and the stirring was continued for 4 hours. Move it into an autoclave, and conduct crystallization treatment at 100°C for 72 hours. Cool, filter, wash the solid well with distilled water, and dry at room temperature. in N 2 In the atmosphere, the temperature was raised to 550°C at a rate of 1°C / min, and kept for 5 hours to obtain copper (as Cu + Mainly, the same below) doped MCM-48 mesoporous molecular sieve, the copper content determined by ICP is 0.5% of the total mass of the molecular sieve. Dissolve 0.4021g of d...

Embodiment 2

[0022] Mix 2.9355g of CTAB template agent, 0.28g of NaOH and 15mL of distilled water, stir at 40°C until clear, then slowly drop in 3g of silicon source TEOS, and continue stirring for about 0.5 hours to obtain a milky white sol. 0.07213gCu(NO 3 ) 2 ·3H 2 O was dissolved in a small amount of water, and the copper ammonia solution obtained by adding 25% concentrated ammonia water dropwise until the precipitation disappeared was added to the above-mentioned sol, and the stirring was continued for 4 hours. Move it into an autoclave, and conduct crystallization treatment at 100°C for 72 hours. Cool, filter, wash the solid well with distilled water, and dry at room temperature. in N 2 In the atmosphere, the temperature was raised to 550°C at a rate of 1°C / min, and kept for 5 hours to obtain a copper-doped MCM-48 mesoporous molecular sieve. The copper content was 2.1% of the total mass of the molecular sieve as determined by ICP. Dissolve 0.4021g of dibenzothiophene in 200mL of...

Embodiment 3

[0024] Mix 2.9328g of CTAB template agent, 0.28g of NaOH and 15mL of distilled water, stir at 40°C until clear, then slowly drop in 3g of silicon source TEOS, and continue to stir for about 0.5 hours to obtain a milky white sol. 0.2322gCu(NO 3 ) 2 ·3H 2 O was dissolved in a small amount of water, and the copper ammonia solution obtained by adding 25% concentrated ammonia water dropwise until the precipitation disappeared was added to the above-mentioned sol, and the stirring was continued for 4 hours. Move it into an autoclave, and conduct crystallization treatment at 100°C for 72 hours. Cool, filter, wash the solid well with distilled water, and dry at room temperature. in N 2In the atmosphere, the temperature was raised to 550°C at a rate of 1°C / min, and kept for 5 hours to obtain a copper-doped MCM-48 mesoporous molecular sieve. The copper content was 6.3% of the total mass of the molecular sieve as determined by ICP. Dissolve 0.4021g of dibenzothiophene in 200mL of is...

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Abstract

The invention belongs to the field of petroleum processing technology and discloses a gasoline desulfurization method. The method can achieve gasoline desulfurization by absorption method, which comprises the step of contacting sulfur-containing gasoline with an absorbent selected from a MCM-48 mesoporous molecular sieve doped by copper element or cerium element. The method has good desulfurization effect, and particularly has large absorption capacity to thiophene and derivatives thereof to achieve high desulfurization rate. The absorption operation can be carried out at normal temperature and under normal pressure to reduce the operation cost, and the absorbent can be easily regenerated to maintain better desulfurization effect.

Description

technical field [0001] The invention belongs to the technical field of petroleum processing, and relates to a gasoline desulfurization method, in particular, to a kind of MCM-48 mesoporous molecular sieve doped with copper or cerium as an adsorbent, which can deeply remove gasoline under mild conditions. sulfide method. Background technique [0002] Combustion of sulfur compounds in fuel oil (gasoline, diesel and aviation kerosene) to generate SO x It is one of the main pollutants of automobile exhaust. SO x Emissions into the atmosphere cause acid rain and more importantly SO x As the inhibitor of automobile exhaust purification catalyst, it will significantly reduce the NO emission of automobile exhaust purifier x , The purification rate of incompletely combusted hydrocarbons. The commercialization of new high-efficiency fuel technologies such as direct-injection internal combustion engines and fuel cells also relies on liquid fuels with very low sulfur content. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/03
Inventor 刘晓勤单佳慧马正飞朱志敏刘定华姚虎卿
Owner NANJING UNIV OF TECH
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