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a kind of sio 2 -Mtes hybrid aerogel is a method for removing thiophene sulfides in fuel oil as an adsorbent

A technology of sulfide and fuel oil, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc. General desulfurization performance and other problems, to achieve good adsorption effect, increase specific surface area, and low requirements

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, the specific surface area of ​​the adsorbent is not large, and the dispersion of the loaded active components is not high, resulting in general adsorption and desulfurization performance.

Method used

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  • a kind of sio <sub>2</sub> -Mtes hybrid aerogel is a method for removing thiophene sulfides in fuel oil as an adsorbent
  • a kind of sio <sub>2</sub> -Mtes hybrid aerogel is a method for removing thiophene sulfides in fuel oil as an adsorbent
  • a kind of sio <sub>2</sub> -Mtes hybrid aerogel is a method for removing thiophene sulfides in fuel oil as an adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0023] Embodiments 1-3: SiO of different silicon sources 2 - Adsorption performance of MTES hybrid airgel on thiophene sulfides in simulated gasoline.

[0024] SiO prepared by sol-gel method 2 -In the MTES hybrid airgel, the silicon sources used include methyl orthosilicate, ethyl orthosilicate, and silica sol, and the prepared SiO 2 - MTES hybrid airgel is 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 - MTES hybrid 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 0.005mg S / g, it is defined as the brea...

Embodiment 4～8

[0029] Embodiments 4-8: SiO with different molar ratios of orthosilicate and methyl triethoxy silicon 2 - Adsorption performance of MTES hybrid airgel on thiophene sulfides in simulated gasoline.

[0030] SiO with the molar ratios of ethyl orthosilicate and methyltriethoxysilicon of 6.3, 2.7, 1.5, 0.9, 0.5 were selected, respectively. 2- MTES hybrid aerogel, through adsorption experiments on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-3, and the adsorption results are shown in Table 2.

[0031] Table 2 SiO with different molar ratios of tetraethylorthosilicate and methyltriethoxysilicon 2 - Adsorption performance of MTES hybrid airgel on thiophene sulfides in simulated gasoline

[0032]

[0033] It can be seen from Table 2 that the SiO 2 -The breakthrough adsorption capacity of MTES hybrid aerogels for thiophene and benzothiophene increases first and then decreases with the decrease of th...

Embodiment example 9～13

[0034] Implementation Cases 9~13: Effects of different space velocities on SiO 2 - Adsorption performance of MTES hybrid airgel on thiophene sulfides in simulated gasoline

[0035] SiO with a molar ratio of ethyl orthosilicate and methyltriethoxysilicon of 2.7:1 was selected. 2 - APTES hybrid 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 1-3, and the adsorption results are shown in Table 3.

[0036] Table 3 SiO at different space velocities 2 - Adsorption performance of MTES hybrid airgel on thiophene sulfides in simulated gasoline

[0037]

[0038] It can be seen from Table 3 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...

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Abstract

The invention discloses a SiO 2 ‑MTES hybrid airgel is a method for removing thiophene sulfides in fuel oil by an adsorbent, and belongs to the technical field of fuel oil processing. In this method, methyl orthosilicate, ethyl orthosilicate, silica sol or water glass are used as silicon sources, and methyl triethoxysilane is introduced for modification, and SiO is prepared by sol-gel-normal pressure drying method. 2 ‑MTES hybrid airgel was filled in a fixed-bed adsorption device, injected with simulated gasoline containing thiophene sulfides at a certain temperature and space velocity, collected the simulated gasoline after adsorption, and carried out chromatographic analysis. The results showed that SiO 2 ‑MTES hybrid airgel has good adsorption properties for thiophene sulfides. SiO in the present invention 2 ‑MTES hybrid airgel adsorbent has a simple preparation method and low cost. The adsorbent can be reused many times, 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 - MTES hybrid 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, biological de...

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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