Oil desulphurization method utilizing microwave driving

A petroleum and microwave technology, applied in the field of petroleum desulfurization, can solve the problems of being in the laboratory research stage, low desulfurization efficiency, difficult separation of organic polymers, etc. Effect

Inactive Publication Date: 2010-10-27
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of the alkaline washing and refining method is that the desulfurization efficiency is low, and it will bring serious environmental problems. The use of a large amount of alkali will inevitably bring some secondary pollution
Although this method does not need to use hydrogen, the preferred perfluorinated acidic organic polymer, because the molecular weight of the organic polymer is large, it is difficult to dissolve, and the accumulation of organic products on the surface of the acidic organic compound will hinder the interaction between the acidic organic polymer catalyst and the raw material. Contact, thereby slowing down the desulfurization process, and may make the reaction impossible to complete, in addition, organic polymers are difficult to separate, will absorb oil, and fluorine-containing compounds are also unfriendly to the environment
The invention of CN200710027226.0 introduces a method for adsorption desulfurization. The method is simple in process and easy to operate, but it is difficult to regenerate the adsorbent. Low efficiency and small adsorption capacity, difficult to industrialize
Biocatalytic petroleum desulfurizati

Method used

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  • Oil desulphurization method utilizing microwave driving
  • Oil desulphurization method utilizing microwave driving
  • Oil desulphurization method utilizing microwave driving

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1:

[0022] Add 3mL acid (can be formic acid, acetic acid, dichloroacetic acid, trifluoroacetic acid, benzoic acid, citric acid, tartaric acid, ascorbic acid, apple acid, etc.), 8mLH 2 o 2 , an appropriate amount of water (50-200mL), a small amount of emulsifier (mass fraction <0.1%); the mixed solution is placed under a high-shear emulsifier for emulsification for 3-5 minutes, and the rotating speed is 3000-23000 rpm; then the emulsion Transfer to a special reaction flask, react under microwave irradiation conditions for 10 minutes, then add 100mL 5% soda ash aqueous solution (also can be 5% sodium bicarbonate aqueous solution or 1% sodium hydroxide solution) to the desulfurized petroleum sample , standing or centrifuging to separate the desulfurized oil. In this example, microwaves are used to drive petroleum desulfurization. The frequency of the microwaves is 2480 MHz, which belongs to the decimeter wave, and the input power of the microwaves is 450 W. In...

Example Embodiment

[0026] Example 2: Experiment of microwave radiation time on desulfurization effect

[0027] The treatment was carried out according to the method described in Example 1, except that the microwave irradiation time was 1, 3, 5, 7, and 10 minutes for sampling treatment, and then measured. Other processing methods and reaction conditions are the same.

[0028] Desulfurization results at different microwave irradiation times: (Oil product: UAE Abu crude oil sample)

[0029] time / min

Example Embodiment

[0030] Example 3: Microwave radiation frequency experiment on desulfurization effect

[0031] The treatment was carried out according to the method described in Example 1, except that the microwave radiation frequencies were 850MHz, 1500MHz, and 2480MHz, and the reaction was carried out for 10 minutes, and then measured. Other processing methods and reaction conditions are the same.

[0032] Desulfurization results under different microwave radiation frequencies: (Oil product: UAE Abu crude oil sample)

[0033] frequency

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Abstract

The invention relates to an oil desulphurization method utilizing microwave driving. The invention is characterized in that the oil desulphurization method includes the following steps: desulphurization reaction auxiliary agent and emulsifier are added into oil, emulsification is carried out on the system, so as to obtain emulsion with oil and water uniformly dispersed; the emulsion reacts under the microwave radiation; after reaction is finished, extracting agent is added into the system in steps, and oil product after desulphurization is separated. Reaction auxiliary agent is mixed aqueous solution of peroxide and acid, the volume ratio of the two is 10-1:1, the volume ratio of auxiliary agent mixed aqueous solution and oil product is 1:5-30; the peroxide is 5-30% aqueous hydrogen peroxide solution, 2-10wt% of hydrogen peroxide or chlorine dioxide aqueous solution with the concentration of 2-10g/L; and the acid is formic acid, acetic acid, dicholoroacetic acid, trifluoroacetic acid, benzoic acid, citric acid, tartaric acid, ascirbuc acid, malic acid, hydrochloric acid or phosphoric acid.

Description

technical field [0001] The invention relates to a method for petroleum desulfurization, in particular to a method for petroleum desulfurization driven by microwaves. Background technique [0002] The existence of sulfur-containing compounds in petroleum will cause corrosion to refining equipment during the refining process, and will also have a non-negligible impact on the quality of refining catalysts, additives and petroleum products. What's more serious is that the sulfur dioxide produced after the use of sulfur-containing oil products has caused serious environmental pollution problems, which has greatly threatened the living environment and sustainable development of human beings. Therefore, the production and use of environmentally friendly and clean petroleum products has become a problem that countries all over the world pay attention to. The environmental protection regulations of various countries have put forward more and more strict standards for the allowable su...

Claims

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Application Information

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IPC IPC(8): C10G53/04C10G32/02
Inventor 胡柏星丁乃东何其慧胡意文
Owner NANJING UNIV
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