Process for desulfurization of oil products by electrochemical catalytic oxidation

A catalytic oxidation and electrochemical technology, applied in the field of oil desulfurization, can solve the problems of slow biological desulfurization and difficult to meet the requirements of large industrial processing capacity.

Inactive Publication Date: 2005-11-23
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the speed of biological desulfurization is slow, and it is difficult to meet the requirements of large industrial processing capacity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 200mL, 0.1mol·L to the closed electrolytic cell -1 In the electrolyte system of a certain salt, 40mL of raw material oil (catalytic gasoline) is added after magnetic stirring, and the electrode prepared by the present invention is used as the anode, and the graphite is used as the cathode to form an electric pair and put it into the electrolytic cell, and then electrolyze with a voltage of 2.4V for 3 hours. After electrolysis, samples were taken for 30 minutes at rest, and total sulfur was analyzed with a microcoulomb sulfur-nitrogen analyzer. Other conditions remain unchanged, and the electrolyte concentration is changed to 0.13 mol·L, respectively. -1 , 0.15mol·L -1 , 0.18mol·L -1 , 0.20mol·L -1 conduct experiment. The experimental results are shown in Table 1.

[0054] Electrolyte concentration mol L -1

[0055] Note: The sulfur content of the raw oil is 91.357ppm.

Embodiment 2

[0057] Add 200mL, 0.15mol·L to the closed electrolytic cell -1 The electrolyte system of a certain salt, magnetic stirring is uniform, add 40mL of raw material oil (catalyzed gasoline), the electrode prepared by the present invention is the anode, and the copper sheet is the cathode to form an electric pair and put it into the electrolytic cell, and then add a voltage of 1.6V for electrolysis for 3 hours. After 30 minutes of electrolysis, samples were taken for total sulfur analysis with a microcoulomb sulfur and nitrogen analyzer. Other conditions remain unchanged, and the electrolysis voltage is changed to 2.0V, 2.4V, 2.8V, and 3.2V for experiments. The experimental results are shown in Table 2.

[0058] Voltage V

[0059] Note: The sulfur content of the raw oil is 91.832ppm.

Embodiment 3

[0061] Add 200mL, 0.15mol·L to the closed electrolytic cell -1 In the electrolyte system of a certain salt, 30 mL of raw material oil (catalytic gasoline) is added after magnetic stirring, and the electrode prepared by the present invention is used as the anode, and the lead plate is used as the cathode to form an electric pair, which is put into the electrolytic cell, and then electrolyzed by applying a voltage of 2.4V for 3 hours. After 30 minutes of electrolysis, samples were taken for total sulfur analysis with a microcoulomb sulfur and nitrogen analyzer. Other conditions remain unchanged, and the amount of feedstock oil added is 35mL, 40mL, 45mL, 50mL, and 60mL for experiments. The experimental results are shown in Table 3.

[0062] oil volume ratio

[0063] Note: The sulfur content of raw oil is 91.615ppm.

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PUM

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Abstract

The invention relates to a process for desulfurization of oil products which comprises using water-soluble medium or certain modified ionic liquid as supporting electrolyte, using own made porous carbon fiber composite material with specific surface area and high absorbability property as the anode, carrying out electrochemical oxidation treatment to the oil, removing the sulfides in the oil by transforming them into water-soluble sulfides.

Description

technical field [0001] The invention relates to a method for desulfurization of oil products. Specifically, a self-made porous material with a large specific surface area and high adsorption performance is used as a composite anode, and in the presence of an electrolyte, the oil is desulfurized by electrochemical catalytic oxidation. Background technique [0002] The economic development of all countries in the world is inseparable from the production and consumption of oil. Over the past century, the rapid development of the petroleum industry and the automobile industry has made great contributions to human civilization and social progress, but the combustion of sulfides in oil products (mainly gasoline and diesel) produces SO 2 , SO 3 It is one of the major pollutants in the environment. With the increasing awareness of environmental protection around the world, countries have successively adopted a series of measures, and the requirements for the sulfur content in oil...

Claims

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Application Information

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IPC IPC(8): C10G32/02
Inventor 汪树军王文波张伟刘红研
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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