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Adsorbent used for desulfurating gasoline, preparation method thereof and method for desulfurating gasoline by the same

An adsorbent and gasoline technology, applied in chemical instruments and methods, refined hydrocarbon oil, petroleum industry, etc., can solve problems such as thiophene sulfides that have not been seen, and achieve the effect of reducing operating costs

Active Publication Date: 2010-08-18
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the loading method commonly used in the literature, so far, there has been no report on the use of cyclodextrin as a carrier to introduce copper elements through grafting to prepare adsorbents for the removal of thiophene sulfides.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mix 0.0955 g of cuprous tert-butoxide and 0.7102 g of β-cyclodextrin in 10 mL of benzene solution, stir for about 1 h under Ar atmosphere at room temperature and normal pressure, and then add benzene to wash until the washing liquid is clear. The sample obtained by washing was vacuum-dried at 60° C. for 2.5 hours to obtain the adsorbent sample. Measured by HG / T 2960-2000 method (the following examples are all determined by this method), the content of monovalent copper element in the adsorbent is 4.7% of the total mass of the adsorbent.

[0030] Dissolve 5mL of thiophene in 45mL of isooctane, and dilute to prepare simulated gasoline with a sulfur content of 500ppm. Add 0.3078g adsorbent in the adsorption column, the model gasoline enters from the bottom, passes through the adsorption column at a flow rate of 3mL / h, and uses Varian 3800 gas chromatography to measure the sulfur content of the liquid phase product, and the desulfurization amount is 60μmol sulfur / g adsorben...

Embodiment 2

[0032] Mix 0.1290 g of cuprous tert-butoxide and 0.4802 g of β-cyclodextrin in 10 mL of benzene solution, stir for about 1 h under Ar atmosphere at room temperature and normal pressure, then add benzene to wash until the washing solution is clear. The sample obtained by washing was vacuum-dried at 60° C. for 2.5 hours to obtain the adsorbent sample. The content of the synthesized monovalent copper element is 8.0% of the total mass of the adsorbent.

[0033] Dissolve 5mL of thiophene in 45mL of isooctane, and dilute to prepare simulated gasoline with a sulfur content of 500ppm. Add 0.3088g of adsorbent to the adsorption column, model gasoline enters from the bottom, passes through the entire adsorption column at a flow rate of 3mL / h, and uses Varian 3800 gas chromatography to measure the sulfur content of the liquid phase product, and the desulfurization amount is 76μmol sulfur / g adsorption agent.

Embodiment 3

[0035] Mix 0.1321 g of cuprous tert-butoxide and 0.3274 g of β-cyclodextrin in 10 mL of benzene solution, stir for about 1 h under Ar atmosphere at room temperature and normal pressure, and then add benzene to wash until the washing liquid is clear. The sample obtained by washing was vacuum-dried at 60° C. for 2.5 hours to obtain the adsorbent sample. The content of the synthesized monovalent copper element is 13.3% of the total mass of the adsorbent.

[0036] Dissolve 5mL of thiophene in 45mL of isooctane, and dilute to prepare simulated gasoline with a sulfur content of 500ppm. Add 0.3064g adsorbent in the adsorption column, the model gasoline enters from the bottom, passes through the entire adsorption column at a flow rate of 3mL / h, and uses Varian 3800 gas chromatography to measure the sulfur content of the liquid phase product, and the desulfurization amount is 89μmol sulfur / g adsorption agent.

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PUM

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Abstract

The invention discloses an adsorbent used for desulfurating gasoline, a preparation method thereof and a method for desulfurating gasoline by the same, which belongs to the technical field of fuel oil processing. The adsorbent is cyclodextrin modified by the copper element; the gasoline desulfurating method comprises the following steps: enabling the adsorbent and the fuel oil containing sulphur to contact and utilizing an adsorption method to realize desulfuration. The adsorption operation can be carried out at normal pressure and temperature; the operation cost is low and the adsorption effect is good.

Description

technical field [0001] The invention belongs to the technical field of fuel oil processing, and relates to an adsorbent for gasoline desulfurization, a preparation method thereof and a method for using the adsorbent to desulfurize gasoline. Background technique [0002] The rise of research on the low-sulfur treatment of fuel oil in the world is due to the increasingly popular concept of environmental protection, the important position of fuel oil in human life and the disadvantages it currently exposes, and various related issues Environmental regulations are also becoming increasingly stringent, leading to an increasing demand for low-sulfur clean oil products worldwide. The organic sulfur contained in fuel oil (gasoline, diesel and kerosene, etc.) is one of the main factors leading to environmental pollution. It will produce sulfur oxides during the combustion process, which will be discharged into the atmosphere to pollute the environment and also lead to the formation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C10G25/00
Inventor 刘晓勤孙林兵宋雪临刘定华朱志敏马正飞
Owner NANJING UNIV OF TECH
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