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a kind of sio 2 -Aptes-ag composite airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent

A composite aerogel and sulfide technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as easy blockage, reduced adsorption desulfurization performance, and difficult industrialized production, etc. To achieve the effect of improving adsorption performance, convenient operation and mild adsorption conditions

Active Publication Date: 2022-03-01
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the preparation process, metal ions are easy to block the pores of metal oxides, resulting in the accumulation of loaded active components on the surface, which cannot enter the pores to provide active sites, reducing the adsorption and desulfurization performance, and this method is difficult to apply to industrial production.

Method used

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  • a kind of sio <sub>2</sub> -Aptes-ag composite airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent
  • a kind of sio <sub>2</sub> -Aptes-ag composite airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent
  • a kind of sio <sub>2</sub> -Aptes-ag composite airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0029] Examples 1-5: SiO with different silicon-silver molar ratios 2 -Adsorption performance of APTES-Ag composite airgel for thiophene sulfides in simulated gasoline.

[0030] SiO prepared by sol-gel method 2 -In the APTES-Ag composite airgel, the silicon source used is tetraethyl orthosilicate, and the prepared SiO 2 -APTES-Ag composite airgel was used 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 1g of SiO 2 -APTES-Ag composite airgel with appropriate amount of quartz sand. Before the adsorption experiment started, the packed adsorbent was fully wetted with n-heptane. Feed simulated gasoline, collect the adsorbed simulated gasoline at the outlet of the lower end of the reactor, and carry out chromatographic analysis. When the sulfur concentration in the effluent is 0.005mgS / g, it is defined as the breakt...

Embodiment example 6～10

[0034] Implementation Cases 6-10: Effects of different space velocities on SiO 2 Adsorption performance of APTES-Ag composite airgel for thiophene sulfides in simulated gasoline

[0035] Choose SiO with a molar ratio of silicon to silver of 50:1 2 - APTES-Ag composite airgel. at an airspeed of 1h -1 、3h -1 、5h -1 、8h -1 、10h -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 1-5, and the adsorption results are shown in Table 2.

[0036] Table 2 SiO at different space velocities 2 Adsorption performance of APTES-Ag composite airgel for thiophene sulfides in simulated gasoline

[0037]

[0038] It can be seen from Table 2 that as the space velocity decreases, the breakthrough adsorption capacity of p-thiophene, benzothiophene and dibenzothiophene will gradually increase. When the space velocity decreases to 3h -1 After that, th...

Embodiment example 16～21

[0044] Implementation Cases 16-21: Simulating SiO at Different Sulfur Concentrations in Gasoline 2 Adsorption performance of -APTES-Ag composite airgel for thiophene sulfides

[0045] Choose SiO with a silicon-silver molar ratio of 50:1 2 - APTES-Ag composite airgel. The sulfur concentrations of thiophene, benzothiophene or dibenzothiophene in simulated gasoline were respectively 0.1mgS / g, 0.5mgS / g, 1mgS / g, 2mgS / g, 5mgS / g, 10mgS / g for breakthrough adsorption experiments. The breakthrough adsorption operation is the same as in Examples 1-5, and the adsorption results are shown in Table 4.

[0046] Table 4 SiO at different sulfur concentrations in simulated gasoline 2 Adsorption performance of -APTES-Ag composite airgel for thiophene sulfides

[0047]

[0048] It can be seen from Table 4 that with the increase of sulfur concentration of thiophene, benzothiophene or dibenzothiophene in simulated gasoline, SiO 2 - The penetration adsorption capacity of APTES-Ag composite a...

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Abstract

The invention discloses a SiO 2 ‑APTES‑Ag composite airgel is a method for adsorbents to remove thiophene sulfides in fuel oil. This method uses ethyl orthosilicate as the silicon source and 3‑aminopropyltriethoxysilane as the ammonia source. Using silver nitrate as silver source, SiO was prepared by sol-gel-atmospheric pressure drying method 2 ‑APTES‑Ag composite airgel, quantitatively filling it in a fixed bed adsorption device, injecting simulated gasoline containing thiophene sulfides at a certain temperature and space velocity, and collecting the adsorbed gas at the outlet of the lower end of the reaction device Simulate gasoline for chromatographic analysis. The results showed that SiO 2 ‑APTES‑Ag composite airgel has good adsorption properties for thiophene sulfides. SiO in the present invention 2 The ‑APTES‑Ag composite airgel adsorbent has a simple preparation method and low cost. The adsorbent can be used repeatedly, has high economic benefits, is environmentally friendly, has mild adsorption conditions, and has low requirements for adsorption equipment.

Description

technical field [0001] The invention belongs to the technical field of fuel oil processing, in particular to a SiO 2 -APTES-Ag composite airgel is a method for adsorbent to remove thiophene sulfides in fuel oil. 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 includes hydrodesulfurization technology, alkylation desulfurization technology, biologi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C10G25/00C10G25/12
CPCB01J20/22B01J20/103B01J20/28047B01J20/28083B01J20/28064B01J20/28066B01J20/28054C10G25/003C10G25/12C10G2400/02C10G2300/201
Inventor 陈飞帆张波卢永康殷路霞
Owner ZHEJIANG UNIV OF TECH
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