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Adsorbent for gasoline desulfurization, and preparation method and application thereof in gasoline desulfurization

An adsorbent and gasoline technology, which is applied in the field of gasoline desulfurization, can solve problems that have not been seen yet, and achieve good desulfurization effect, high desulfurization efficiency, and large adsorption capacity.

Active Publication Date: 2011-04-06
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, the research on adsorbents has been concentrated on pure mesoporous silica, and there is no report on the use of aluminum doped mesoporous silica as a carrier to prepare desulfurization adsorbent by loading CuCl.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 (the sample of undoped aluminum element, for contrast)

[0030] Weigh 1 g of SBA-15 and 0.3960 g of CuCl, and after fully grinding, calcinate in Ar atmosphere at 380 °C for 2 h to obtain an adsorbent with a copper loading of 4 mmol / g SBA-15.

[0031] Dissolve 5mL of thiophene in 45mL of isooctane, and dilute to prepare simulated gasoline with a sulfur content of 500ppm. The mass of the adsorbent in the adsorption column is 0.2827g. The model gasoline enters from the bottom of the adsorption column and passes through the entire adsorption column at a flow rate of 3mL / h. The sulfur content of the liquid phase product is measured by a Varian 3800 gas chromatograph, and the desulfurization amount is 167μmol sulfur / g adsorbent (the desulfurization amount expressed in this application is the adsorption amount when the adsorbent is saturated and adsorbed, the same below).

Embodiment 2

[0033] Weigh 0.3097g of aluminum nitrate and dissolve it in a certain amount of deionized water, then add 0.8g of SBA-15 and stir at room temperature for 24 hours, then heat up to 80°C to evaporate excess water, and dry the obtained sample at 100°C, and the dried sample Air was fired at 550°C for 5 hours to obtain a sample with an alumina content of 5% of the total mass, labeled AS-5.

[0034] Weigh 1g AS-5 and 0.3960g CuCl, after fully grinding, calcinate in Ar atmosphere at 380°C for 2h to prepare the adsorbent with copper loading of 4mmol / g AS-5.

[0035] Dissolve 5mL of thiophene in 45mL of isooctane, and dilute to prepare simulated gasoline with a sulfur content of 500ppm. The mass of the adsorbent in the adsorption column is 0.2872g. The model gasoline enters from the bottom of the adsorption column and passes through the entire adsorption column at a flow rate of 3mL / h. The sulfur content of the liquid phase product is measured by a Varian 3800 gas chromatograph, and th...

Embodiment 3

[0037] Weigh 0.6538g of aluminum nitrate and dissolve it in a certain amount of deionized water, then add 0.8g of SBA-15 and stir at room temperature for 24 hours, then heat up to 80°C to evaporate excess water, and dry the obtained sample at 100°C, and the dried sample Air was fired at 550°C for 5 hours to obtain a sample with an alumina content of 10% of the total mass, labeled AS-10.

[0038] Weigh 1g of AS-10 and 0.3960g of CuCl, after fully grinding, calcinate in Ar atmosphere at 380°C for 2h to prepare the adsorbent with copper loading of 4mmol / g AS-10.

[0039] Dissolve 5mL of thiophene in 45mL of isooctane, and dilute to prepare simulated gasoline with a sulfur content of 500ppm. The mass of the adsorbent in the adsorption column is 0.2853g. The model gasoline enters from the bottom of the adsorption column and passes through the entire adsorption column at a flow rate of 3mL / h. The sulfur content of the liquid phase product is measured by a Varian 3800 gas chromatogra...

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PUM

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Abstract

The invention belongs to the field of gasoline desulfurization and discloses an adsorbent for gasoline desulfurization, and a preparation method and application thereof in the gasoline desulfurization. The adsorbent is obtained by the steps of: sufficiently grinding cuprous chloride and aluminum-doped mesoporous silica molecular sieve, and roasting in inert atmosphere. When the adsorbent makes contact with the sulfurous gasoline, the desulfurization of the gasoline is realized by using an adsorption method. The adsorbent has good adsorption effect and can maintain better desulfurization effect after being regenerated.

Description

technical field [0001] The invention belongs to the field of gasoline desulfurization, and relates to a copper-containing mesoporous silicon oxide adsorbent for gasoline desulfurization, a preparation method thereof, an application in gasoline desulfurization, and a regeneration method of the adsorbent. Background technique [0002] Organic sulfur contained in fuel oil (gasoline, diesel and kerosene, etc.) is one of the main factors leading to environmental pollution. It generates sulfur oxides through combustion, leading to the formation of acid rain and corrosion of buildings. Therefore, removal of these sulfur compounds is an important process in fuel oil refining. Today, relying on hydrodesulfurization technology can reduce the sulfur content in fuel oil, but to achieve the purpose of deep desulfurization, not only requires higher energy consumption, but also increases the loss of hydrogen. Therefore, people have turned their attention to the research on the development...

Claims

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Application Information

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IPC IPC(8): B01J20/18C10G25/05B01J20/34B01J20/30
Inventor 刘晓勤孙林兵何古色朱志敏
Owner NANJING UNIV OF TECH
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