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Oxidative desulfurization method for rare earth polyacid and ionic liquid extraction catalysis fuel oil

An ionic liquid, rare earth polyacid technology, applied in the direction of refining with oxygenated compounds, can solve the problems of increasing equipment investment and operating costs, not being widely promoted, and reducing the octane number of oil products, achieving easy recycling, The effect of short reaction time and high conversion rate

Active Publication Date: 2012-07-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Whether it is raw material hydrogenation or selective hydroprocessing technology, what they have in common is the need for high temperature and high pressure, hydrogen consumption, and lower octane number of oil products
Although selective hydrogenation has made many improvements in catalyst selection and process flow, it has avoided a large amount of hydrogen consumption and reduced octane loss, but it has increased equipment investment and operating costs, and this technology has not been widely promoted.

Method used

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  • Oxidative desulfurization method for rare earth polyacid and ionic liquid extraction catalysis fuel oil
  • Oxidative desulfurization method for rare earth polyacid and ionic liquid extraction catalysis fuel oil
  • Oxidative desulfurization method for rare earth polyacid and ionic liquid extraction catalysis fuel oil

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Experimental program
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Effect test

Embodiment 1

[0020] 1. Preparation of simulated fuel oil:

[0021] Take 1.4662g (7.793mmol, 98%) of DBT and dissolve it in n-octane to prepare 250mL of simulated fuel oil with a sulfur content of 1000ppm.

[0022] 2. Catalytic oxidation desulfurization experiment:

[0023] 26.5mg Na 9 wxya 10 o 36 32H 2 O, 0.05mL 30wt%H 2 o 2 , 1mL ionic liquid [BMIM]BF 4 , 5mL simulated fuel oil was added to a 50mL double-necked round-bottom flask in turn, and the magnetic stirring reaction was carried out at 30°C for 0.5h; a sample was taken every 5min, and the supernatant was taken out after each rest and analyzed by gas chromatography;

[0024] The content of DBT in the simulated fuel oil is confirmed by reference standards, analysis conditions:

[0025] Injection port temperature = 340°C; detector temperature = 250°C; furnace temperature = 70°C; carrier gas: high-purity nitrogen; injection volume: 1 μL.

[0026] 3. Catalyst recovery and recycling:

[0027] After the reaction is completed, th...

Embodiment 2

[0029] 1. Preparation of simulated fuel oil:

[0030] With embodiment 1.

[0031] 2. Catalytic oxidation desulfurization experiment:

[0032] 10.61mg Na 9 lmao 10 o 36 32H 2 O, 0.03mL 30wt%H 2 o 2, 1mL ionic liquid [BMIM]BF 4 , 5mL simulated fuel oil was added to a 50mL double-necked round-bottom flask in turn, and the magnetic stirring reaction was carried out at 30°C for 0.6h; a sample was taken every 5min, and the supernatant was taken out after each rest and analyzed by gas chromatography;

[0033] The content of DBT in the simulated fuel oil is confirmed by reference standards, analysis conditions:

[0034] Injection port temperature = 340°C; detector temperature = 250°C; furnace temperature = 70°C; carrier gas: high-purity nitrogen; injection volume: 1 μL.

[0035] 3. Catalyst recovery and recycling:

[0036] After the reaction is completed, the poured out supernatant oil phase clear liquid is the fuel oil after deep desulfurization; after the residual fuel oil...

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Abstract

The invention discloses an oxidative desulfurization method for rare earth polyacid and ionic liquid extraction catalysis fuel oil, belonging to the technical field of catalytic oxidative desulfurization of fuel oil. Fuel oil with high sulfur content is catalytically oxidized under a catalytic system consisting of rare earth polyoxometallate, an ionic liquid and hydrogen peroxide, so that a deep desulfurization effect is achieved at the normal temperature, and efficient cleaning and utilization of energy are realized. Moreover, a catalyst and the ionic liquid are not degraded after repeated circular reactions, so that the method is a successful desulfurization method. The catalyst used in the catalytic system has the advantages of easiness for preparing, accurate detection measure, short reaction time, high catalytic oxidation transformation ratio and easiness in recycling.

Description

technical field [0001] The invention belongs to the technical field of fuel oil catalytic oxidation desulfurization, in particular to a method for extracting and catalytic fuel oil oxidation desulfurization by rare earth polyacids and ionic liquids. Background technique [0002] Sulfur in crude oil and petroleum fractions exists in the form of elemental sulfur, hydrogen sulfide, and organic sulfides. Organic sulfur compounds can generally be divided into mercaptans, sulfides, disulfides and thiophenes. These sulfur-containing substances are distributed in various distillates during crude oil processing. The sulfur-containing compounds in gasoline are mainly mercaptans, sulfides and monocyclic thiophenes, which mainly come from FCC gasoline. The sulfur-containing compounds in the diesel fraction include mercaptan, sulfide, thiophene, benzothiophene and dibenzothiophene, etc., where there are alkyl groups at the 4-position and 6-position of dibenzothiophene, due to the steric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G27/12
Inventor 宋宇飞徐军华赵燊吉元春
Owner BEIJING UNIV OF CHEM TECH
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