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Method or removing thiophenic sulfur from fuel oil by taking Cu2O/SiO2-Al2O3 composite aerogel as adsorbent

A composite airgel and adsorbent technology, applied in chemical instruments and methods, hydrocarbon oil treatment, refined hydrocarbon oil, etc., to achieve low requirements, good adsorption effect, and mild adsorption conditions

Active Publication Date: 2017-04-26
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned problems existing in the existing π-complexed adsorbent in the removal of thiophene sulfur in fuel oil, the purpose of the present invention is to provide a Cu with mild adsorption conditions, convenient operation, superior adsorption performance, large adsorption capacity, and easy regeneration. 2 O / SiO 2 -Al 2 o 3 Removal of thiophene-like sulfur from fuel oil with Cu by composite airgel via π-complex adsorption 2 O / SiO 2 -Al 2 o 3 A Method for Removing Thiophene Sulfur from Fuel Oil Using Composite Airgel as Adsorbent by π Complex Adsorption

Method used

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  • Method or removing thiophenic sulfur from fuel oil by taking Cu2O/SiO2-Al2O3 composite aerogel as adsorbent
  • Method or removing thiophenic sulfur from fuel oil by taking Cu2O/SiO2-Al2O3 composite aerogel as adsorbent
  • Method or removing thiophenic sulfur from fuel oil by taking Cu2O/SiO2-Al2O3 composite aerogel as adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0022] Examples 1-6: Cu with different silicon sources and copper sources 2 O / SiO 2 -Al 2 o 3 Effect of Composite Airgel on Adsorption of Thiophene Sulfides in Simulated Gasoline

[0023] Prepared by the sol-gel method, fixed the total molar mass of silicon and aluminum to copper molar ratio of 50, silicon aluminum ratio of 9, hydrogen reduction temperature of 120 degrees Celsius and reduced Cu for 5 hours. 2 O / SiO 2 -Al2 o 3 Composite airgel, the silicon source used has tetraethyl orthosilicate, water glass, copper source has cupric chloride, copper acetate, and aluminum source is aluminum chloride hexahydrate, and the prepared Cu 2 O / SiO 2 -Al 2 o 3 Composite aerogels were subjected to penetration adsorption desulfurization experiments, and the specific operations were as follows: In a fixed-bed reactor, the bottom layer was filled with an appropriate amount of absorbent cotton, and then 1 g of Cu 2 O / SiO 2 -Al 2 o 3 Airgel with appropriate amount of quartz sand....

Embodiment 7-10

[0029] Examples 7-10: Cu with different molar ratios of silicon to aluminum 2 O / SiO 2 -Al 2 o 3 Effect of Composite Airgel on Adsorption of Thiophene Sulfides in Simulated Gasoline

[0030] The silicon source is tetraethyl orthosilicate, the copper source is copper acetate, the molar ratio of silicon to aluminum is 2, 4, 9, 19, and other conditions are the same as the Cu 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 1-6, and the adsorption results are shown in Table 3.

[0031] Table 3 Effects of different silicon-aluminum ratios on the adsorption of thiophene sulfides in simulated gasoline

[0032]

[0033] It can be seen from Table 3 that Cu 2 O / SiO 2 -Al 2 o 3 As the molar ratio of silicon to aluminum decreases, that is, the aluminum content increases, the breakthrough adsorption capacity of thiophene and benzothiophene ...

Embodiment 11-14

[0034] Examples 11-14: Cu with different molar ratios of silicon to copper 2 O / SiO 2 -Al 2 o 3 Effect of Composite Airgel on Adsorption of Thiophene Sulfides in Simulated Gasoline

[0035] The silicon source is tetraethyl orthosilicate, the copper source is copper acetate, the ratio of silicon to copper is 40, 50, 75, 150, and other conditions are the same as the Cu 2 O / SiO 2 -Al 2 o 3 , and the other conditions are the same as those of the implementation cases 1-6, and the breakthrough adsorption experiment was carried out on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-6, and the adsorption results are shown in Table 4.

[0036] Table 4 Cu with different molar ratios of silicon and aluminum to copper 2 O / SiO 2 -Al 2 o 3 Effects on Adsorption of Thiophene Sulfides in Simulated Gasoline

[0037]

[0038] It can be seen from Table 4 that Cu 2 O / SiO 2 -Al 2 o 3 As the ratio of th...

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Abstract

The invention discloses a method for removing thiophenic sulfur from fuel oil by taking Cu2O / SiO2-Al2O3 composite aerogel as an adsorbent, and belongs to the technical field of fuel oil processing. The method comprises the following steps: preparing the Cu2O / SiO2-Al2O3 composite aerogel by adopting a sol-gel normal-pressure drying method and taking ethyl orthosilicate as a silicon source, aluminum chloride hexahydrate as an aluminum source and copper acetate as a copper source; and then filling the Cu2O / SiO2-Al2O3 composite aerogel into a fixed-bed adsorption device, and injecting model gasoline at a certain temperature and flow. The model gasoline after adsorption is collected at a lower end outlet of a reaction device to perform gas chromatographic analysis, and the result shows that the Cu2O / SiO2-Al2O3 composite aerogel has good adsorptive property for thiophene and benzothiophene. The Cu2O / SiO2-Al2O3 composite aerogel adsorbent used in the method provided by the invention has a simple preparation method, is low in cost, can be used repeatedly for multiple times, and is high in economic benefit, 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 a Cu 2 O / SiO 2 -Al 2 o 3 Composite airgel is a method for adsorbents to remove thiophene sulfur from fuel oil through π complex adsorption. 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. Therefore, the deep desulfurization of fuel oil has become the focus of attention of the whole society. [0003] At present, the desulfurization technology of fuel oil mainly includes hydrodesulfurization technology, alkylation desulfurization technology, biological desulfurization technology, extraction desulfurization technology, oxidation desulfurization technology, adsorption desulfurization technology, etc. Among them, the π complex adsorption desulfurization technolog...

Claims

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Application Information

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IPC IPC(8): C10G25/00B01J20/06B01J20/08B01J20/10B01J20/28
CPCB01J20/06B01J20/08B01J20/103B01J20/28047C10G25/003C10G2300/202
Inventor 谢方张波王乐潘飞苗
Owner ZHEJIANG UNIV OF TECH
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