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a kind of sio 2 ‑coo composite airgel is a method for removing thiophene sulfur in gasoline as an adsorbent

A technology of composite airgel and adsorbent, applied in chemical instruments and methods, processing hydrocarbon oil, refining hydrocarbon oil, etc., to achieve the effect of low requirements, good adsorption effect, and good adsorption performance

Active Publication Date: 2018-02-27
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned problems existing in the existing π-complex adsorbents in the removal of thiophene sulfur in gasoline, the purpose of the present invention is to provide a SiO with mild adsorption conditions, convenient operation, superior adsorption performance, large adsorption capacity, and easy regeneration. 2 -CoO composite airgel as a π-complex adsorbent to remove thiophene sulfur from gasoline

Method used

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  • a kind of sio <sub>2</sub> ‑coo composite airgel is a method for removing thiophene sulfur in gasoline as an adsorbent
  • a kind of sio <sub>2</sub> ‑coo composite airgel is a method for removing thiophene sulfur in gasoline as an adsorbent
  • a kind of sio <sub>2</sub> ‑coo composite airgel is a method for removing thiophene sulfur in gasoline as an adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0025] Examples 1-4: SiO with different silicon sources and cobalt sources 2 Effect of -CoO Composite Airgel on Adsorption of Thiophene Sulfides in Simulated Gasoline

[0026] SiO prepared by sol-gel method 2 In the -CoO composite airgel, the silicon sources used include tetraethyl orthosilicate and water glass, and the cobalt sources include cobalt nitrate and cobalt acetate. The prepared SiO 2-CoO composite aerogel for penetration adsorption desulfurization experiment, the specific operation is as follows: In the fixed bed reactor, the bottom layer is filled with an appropriate amount of absorbent cotton, and then filled with 1 g of SiO2-CoO composite airgel and an appropriate amount of quartz sand . Before the adsorption experiment started, the packed adsorbent was fully wetted with n-heptane. Feed simulated gasoline, and collect the adsorbed simulated gasoline at the outlet of the lower end of the reactor for gas chromatographic analysis. The obtained breakthrough ads...

Embodiment 5-9

[0030] Examples 5-9: SiO with different silicon-cobalt molar ratios 2 Effect of -CoO Composite Airgel on Adsorption of Thiophene Sulfides in Simulated Gasoline

[0031] The SiO2-CoO composite aerogels with silicon-cobalt molar ratios of 5, 10, 50, 100, and 200 were selected to conduct penetration adsorption experiments on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-4, and the adsorption results are shown in Table 2.

[0032] Table 2 Effects of different silicon-cobalt molar ratios on the adsorption of thiophene sulfides in simulated gasoline

[0033]

[0034] It can be seen from Table 2 that the penetration adsorption capacity of SiO2-CoO composite aerogels for thiophene and benzothiophene increases with the decrease of silicon-cobalt molar ratio, that is, the increase of cobalt content. When the silicon-cobalt molar ratio is less than 50, the breakthrough adsorption capacity of thiophene a...

Embodiment example 10~14

[0035] Implementation Cases 10~14: Effects of different space velocities on SiO 2 -CoO Composite Airgel Adsorption Simulated Effect of Thiophene Sulfides in Gasoline

[0036] Choose SiO with a molar ratio of silicon to cobalt of 50 2 -CoO composite airgel. at an airspeed of 1 h -1 、3 h -1 、5h -1 , 8 h -1 、10 h -1 Next, 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 1-4, and the adsorption results are shown in Table 3.

[0037] Table 3 Effects of different space velocities on adsorption of thiophene sulfides in simulated gasoline

[0038]

[0039] It can be seen from Table 3 that the breakthrough adsorption capacity of thiophene and benzothiophene will gradually increase with the decrease of space velocity. When the space velocity decreases to 5 h -1 After that, the breakthrough adsorption capacity for thiophene sulfides does not ch...

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Abstract

The invention relates to a method using SiO2-CoO composite aerogel as the absorbent to remove thiophene sulfur in gasoline and belongs to the technical field of gasoline processing. The method includes: filling the SiO2-CoO composite aerogel into a fixed bed absorption device, and feeding simulated gasoline containing thiophene or benzothiophene under certain airspeed; collecting the absorbed simulated gasoline at the lower outlet of the reactor, and performing gas chromatography. The gas chromatography result shows that the SiO2-CoO composite aerogel can well absorb the thiophene and benzothiophene. The SiO2-CoO composite aerogel absorbent is simple to prepare, low in cost, reusable, convenient to operate, environmental friendly, high in economic benefit, mild in absorption condition and low in absorption equipment requirement.

Description

technical field [0001] The invention belongs to the technical field of gasoline processing, in particular to a kind of SiO adsorbed by π complexation 2 -CoO composite airgel desulfurization adsorbent and its preparation method and application in gasoline desulfurization. Background technique [0002] In recent years, countries have attached great importance to environmental protection and put forward strict limit standards for the sulfur content in gasoline. From 2010 onwards in EU countries, the sulfur content in gasoline must be less than 10 μg / g. In terms of fuel cells, the sulfide in gasoline will poison the catalyst of the battery electrode, so the sulfur content of gasoline must be lower than 0.1μg / g. In current industrial production, the main process of desulfurization is still traditional hydrodesulfurization, but its operating cost is high, hydrogen consumption is large, operating conditions are harsh, and the octane number in gasoline is reduced. Moreover, hydro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30B01J20/28C10G25/00
CPCB01J20/0229B01J20/103B01J20/28047B01J2220/4806C10G25/003C10G2300/201C10G2400/02
Inventor 缪光武张波陈晶门君
Owner ZHEJIANG UNIV OF TECH
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