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Method for removing thiophene sulfur in fuel oil

A technology for fuel oil and thiophene, which is applied in the treatment of hydrocarbon oil, petroleum industry, refined hydrocarbon oil, etc., to achieve good adsorption performance and improve adsorption performance

Inactive Publication Date: 2018-06-22
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above-mentioned problems existing in existing π complex adsorbents in the removal of thiophene sulfur in fuel oil, the object of the present invention is to provide a Ag with large adsorption capacity and easy regeneration. 2 O / SiO 2 -Al 2 o 3 Composite airgel is used as adsorbent, the adsorption condition is mild, and the method of removing thiophene sulfur in fuel oil by π complex adsorption

Method used

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  • Method for removing thiophene sulfur in fuel oil
  • Method for removing thiophene sulfur in fuel oil
  • Method for removing thiophene sulfur in fuel oil

Examples

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Embodiment 1～8

[0028] Embodiments 1-8: Ag of different silicon sources, silver sources and aluminum sources 2 O / SiO 2 -Al 2 o 3 Adsorption Performance of Composite Airgel on Thiophene Sulfides in Simulated Gasoline

[0029] Ag prepared by sol-gel method 2 O / SiO 2 -Al 2 o 3 In the composite airgel, the silicon sources used include methyl orthosilicate, ethyl orthosilicate, and silica sol, the silver sources include silver nitrate and silver acetate, and the aluminum sources include aluminum nitrate, aluminum acetate, and aluminum oxalate. The prepared Ag 2 O / SiO 2 -Al 2 o 3 Composite aerogels were subjected to penetration adsorption desulfurization experiments. The specific operation was as follows: In the fixed bed reactor, the bottom layer was filled with an appropriate amount of absorbent cotton, and then filled with 1g of Ag 2 O / SiO 2 -Al 2 o 3 Airgel with appropriate amount of quartz sand. Before the adsorption experiment started, the packed adsorbent was fully wetted with...

Embodiment 9～14

[0038] Examples 9-14: Ag with different molar ratios of silicon to aluminum 2 O / SiO 2 -Al 2 o 3 Adsorption Performance of Composite Airgel on Thiophene Sulfides in Simulated Gasoline

[0039] Choose Ag with a silicon-silver molar ratio of 50:1 and a silicon-aluminum molar ratio of 25, 50, 75, 100, 125, and 15, respectively. 2 O / SiO 2 -Al 2 o 3 Airgel, through adsorption experiments on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-8, and the adsorption results are shown in Table 4.

[0040] Table 4 Ag with different molar ratios of silicon to aluminum 2 O / SiO 2 -Al 2 o 3 Adsorption Performance of Composite Airgel on Thiophene Sulfides in Simulated Gasoline

[0041]

[0042]

[0043] It can be seen from Table 4 that the molar ratio of silicon to silver is 50:1, and Ag with different molar ratios of silicon to aluminum 2 O / SiO 2 -Al 2 o 3 The breakthrough adsorption capacity of ...

Embodiment 15～18

[0044] Examples 15-18: Ag with different silicon-silver molar ratios 2 O / SiO 2 -Al 2 o 3 Adsorption Performance of Composite Airgel on Thiophene Sulfides in Simulated Gasoline

[0045] Ag with a silicon-silver molar ratio of 10, 20, 50, and 100 was selected. 2 O / SiO 2 -Al 2 o 3 Airgel, through adsorption experiments on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-8, and the adsorption results are shown in Table 5.

[0046] Table 5 Ag with different silicon-silver molar ratios 2 O / SiO 2 -Al 2 o 3 Adsorption Performance of Composite Airgel on Thiophene Sulfides in Simulated Gasoline

[0047]

[0048] It can be seen from Table 5 that Ag 2 O / SiO 2 -Al 2 o 3 The breakthrough adsorption capacity of airgel for thiophene and benzothiophene increases first and then decreases with the decrease of silicon-silver molar ratio, that is, the increase of silver content. After the silicon-silv...

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Abstract

The invention discloses a method for removing thiophene sulfur in fuel oil and belongs to the technical field of fuel oil processing. The method comprises the following steps: using tetramethyl orthosilicate, tetraethyl orthosilicate, silica sol, water glass or the like as a silicon source; using silver acetate, silver nitrate or the like as a silver source; using aluminum nitrate, aluminum acetate or aluminum oxalate as an aluminum source; preparing an Ag2O / SiO2-Al2O3 composite aerogel with a sol-gel-atmospheric pressure drying method; quantitatively filling in a fixed bed adsorption device;injecting a simulated gasoline containing thiophene sulfur at a certain temperature and space velocity; and collecting the adsorbed simulated gasoline at a lower outlet of a reaction device for chromatographic analysis. Results show that the Ag2O / SiO2-Al2O3 composite aerogel has good adsorption performance for thiophene sulfur; an Ag2O / SiO2-Al2O3 composite aerogel adsorbent in the invention is simple in preparation method, low in cost, capable of being repeatedly used, high in economic efficiency, environmentally friendly, mild in adsorption condition and low in requirement on adsorption equipment.

Description

technical field [0001] The invention belongs to the technical field of fuel oil processing, and in particular relates to an Ag that is adsorbed by π complexation 2 O / SiO 2 -Al 2 o 3 Composite airgel desulfurization adsorbent and its preparation method and application in gasoline desulfurization. Background technique [0002] With the vigorous development of the automobile industry, the large amount of sulfide emissions from automobile exhaust not only makes environmental pollution more and more serious, but also threatens human health. Fuel cells also have very high requirements on the sulfur content in fuel oil. The presence of organic sulfides will poison the catalyst in the fuel cell electrodes, making the fuel cells unable to effectively convert the chemical energy in diesel gasoline into electrical energy. Therefore, the deep desulfurization of fuel oil has become the focus of global attention. [0003] At present, the desulfurization technology of fuel oil mainly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/00
CPCC10G25/003C10G2300/202C10G2400/02
Inventor 蔡伟豪张波潘飞苗刘少博周金兵
Owner ZHEJIANG UNIV OF TECH
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