Catalysis, oxidation sweetening method for distillate oil of petroleum

A technology of catalytic oxidation desulfurization and petroleum distillate, which is applied in the field of catalytic oxidation desulfurization of petroleum distillate oil, can solve the problems of poor organic sulfur oxidation performance and separation difficulties, and achieve the effects of enhanced adsorption capacity, strong lipophilicity, and large reaction contact area

Inactive Publication Date: 2005-01-12
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Heteropolyacid catalyzed hydrogen peroxide has poor oxidation performance on organic sulfur, and a phase transfer agent needs to be added, which brings difficulties to the separation after the reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dissolve thiophene in n-octane to form a model oil with a sulfur content of 1447ppm. Add 36ml of model oil to a 250ml batch reactor, then add 0.10g of activated carbon and stir at room temperature for 5min. The batch reactor is heated to 60°C, and then 2 g of 30% H 2 o 2 Add it into the reactor, adjust the pH value to 2 with formic acid, and react at 60°C for 120 minutes. After the reaction, take the oil phase for GC-FPD analysis, and the conversion of thiophene is 31.29%.

Embodiment 2

[0030] Dissolve thiophene in n-octane to form a model oil with a sulfur content of 1447ppm. Add 36ml of model oil to a 250ml batch reactor, then add 0.40g of activated carbon and stir at room temperature for 5min, heat the batch reactor to 60°C, and then 2 g of 30% H 2 o 2 Put into the reactor and adjust the pH value to 2 with formic acid and react at 60°C for 120min. After the reaction, the oil phase was taken for GC-FPD analysis, and 83.21% of thiophene was converted.

Embodiment 3

[0032] 50g catalytically cracked gasoline (FCC gasoline, mercaptans have been removed) (gasoline sulfur content 998ppm) and 0.4g activated carbon are added to a 500ml batch reactor, start stirring and be warmed up to a specified temperature; then, pour 1.6g30% hydrogen peroxide aqueous solution Put it into the flask, adjust the pH value to 2 with formic acid, and keep stirring at a high speed; react at 60°C for 120 minutes, and take the oil phase after the reaction to measure the sulfur content to 297ppm.

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Abstract

A catalytic oxidation and desulfidation method for petroleum distillate oil includes using car bon material or / and carbon material carried with transition metal as catalyst, carrying out reaction under action of at least one type of peroxide and at least one type of acid and generating peroxyacid and hydroxy free radical to concert sulfur compound contained in oxidized petroleum distillate oil on the reaction.

Description

technical field [0001] The invention relates to a method for desulfurizing petroleum distillate oil, in particular to a method for catalytic oxidation desulfurization of petroleum distillate oil. technical background [0002] The increasingly stringent environmental protection requirements have made the world's oil refining industry face the severe challenge of producing cleaner gasoline and diesel fuel. The production of clean gasoline and diesel has become the main theme of today's refineries, and the reduction of sulfur content is the top priority in the production of clean gasoline and diesel. The United States requires gasoline sulfur content to be reduced to 30-50ppm. The European Community has proposed a more stringent new standard for clean gasoline from 2000 to 2005, reducing the current sulfur content from 100ppm to 15ppm. Europe and the United States have also put forward strict restrictions on the sulfur content of diesel oil. The sulfur content of diesel oil i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G27/12
Inventor 陆善祥余国贤陈辉朱中南刘山
Owner EAST CHINA UNIV OF SCI & TECH
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