Adsorbent for desulfurization of fuel oil, preparation method and application thereof

A fuel oil and adsorbent technology, which is applied in the field of fuel oil desulfurization, can solve the problems of large particle size, lack of adsorption activity, no known nano-particles to remove thiophene sulfides, and inability to achieve desulfurization effect, etc. Convenience, mild reaction conditions, good dispersibility

Active Publication Date: 2014-12-31
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned adsorbent must incorporate the active component AgNO 3 Loaded on the carrier for desulfurization, AgNO 3 Large particle size does not have good adsorption activity
Moreover, the adsorption desulfurization performance has a great relationship with the dispersion of active species on the carrier. If the dispersion is not good, the active species and fuel oil cannot fully contact, and the ideal desulfurization effect will not be achieved.
[0004] So far, most of the research work in adsorption desulfurization technology has focused on the preparation and application of supported adsorbents, and there has been no report on the removal of thiophene-type sulfides by directly using nanoparticles without a carrier.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of adsorbent: Add 1mL 0.25mol / L silver nitrate and 1mL 0.5mol / L sodium chloride dropwise to 97mL9.2×10 -4 mol / L CTAC aqueous solution, stirred at 25°C in the dark for 0.5 h, centrifuged, washed with ethanol for 3 times, and dried at room temperature in the dark to obtain the adsorbent sample.

[0025] Adsorption experiment: Dissolve 5mL of thiophene in 45mL of isooctane and dilute it to prepare simulated fuel oil with a sulfur content of 550ppm. Add 0.04g adsorbent to 10mL simulated fuel oil, stir and react for 7h at room temperature and normal pressure, take the liquid phase product and measure its sulfur content with Varian 3800 gas chromatography, the desulfurization amount is 93 μmol sulfur / g adsorbent (in this application The desulfurization amount stated is the adsorption amount when the adsorbent is saturated, the same below).

Embodiment 2

[0027] Preparation of adsorbent: Add 1mL 0.25mol / L silver nitrate and 1mL 0.5mol / L sodium chloride dropwise to 97mL9.2×10 -4 mol / L CTAC aqueous solution, stirred at 25°C for 2 hours in the dark, centrifuged, washed with ethanol for 3 times, and dried at room temperature in the dark to obtain the adsorbent sample.

[0028] Adsorption experiment: Dissolve 5mL of thiophene in 45mL of isooctane and dilute it to prepare simulated fuel oil with a sulfur content of 550ppm. Add 0.04 g of adsorbent to 10 mL of simulated fuel oil, stir and react at room temperature and pressure for 7 hours, take the liquid phase product and use Varian 3800 gas chromatography to measure its sulfur content, and the desulfurization amount is 102 μmol sulfur / g adsorbent.

Embodiment 3

[0030] Preparation of adsorbent: Add 1mL 0.25mol / L silver nitrate and 1mL 0.5mol / L sodium chloride dropwise to 97mL9.2×10 -4 mol / L CTAC aqueous solution, stirred at 25°C for 3.5 hours in the dark, centrifuged, washed with ethanol for 3 times, and dried at room temperature in the dark to obtain the adsorbent sample.

[0031] Adsorption experiment: Dissolve 5mL of thiophene in 45mL of isooctane and dilute it to prepare simulated fuel oil with a sulfur content of 550ppm. Add 0.04 g of adsorbent to 10 mL of simulated fuel oil, stir and react at room temperature and pressure for 7 hours, take the liquid phase product and use Varian 3800 gas chromatography to measure its sulfur content, and the desulfurization amount is 131 μmol sulfur / g adsorbent.

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Abstract

The invention discloses an adsorbent for desulfurization of fuel oil. The absorbent does not need any carriers, while only silver halide nanoparticles are used for absorbing and removing sulphides in the fuel oil under mild conditions. The adsorbent for desulfurization of the fuel oil adopts the silver halide nanoparticles.

Description

technical field [0001] The invention relates to an adsorbent, a preparation method and its application, more specifically to an adsorbent for fuel oil desulfurization, a preparation method and its application, and belongs to the field of fuel oil desulfurization. Background technique [0002] The sulfur oxides produced by the combustion of sulfur-containing compounds in fuel oil (gasoline, diesel, kerosene, etc.) enter the atmosphere to produce acid rain and cause corrosion to trees and buildings on the ground. At the same time, sulfur oxides can also corrode the engine, damage the performance of oxygen sensors and on-board diagnostic systems, poison the catalyst in the automobile exhaust converter and affect the performance of the catalytic converter. In addition, new fuel technologies such as fuel cells also place high demands on the sulfur content in fuel. At the same time, as people around the world are increasingly calling for environmental protection, people have put ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/30C10G25/00
Inventor 刘晓勤孙林兵李艳华刘定华
Owner NANJING TECH UNIV
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