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Oil decolorant

A technology for decolorizing agents and oil products, applied in the field of decolorizing agents, can solve the problems of low cost, small dosage, and difficulty in achieving effects.

Active Publication Date: 2018-11-09
云南聚中能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is often difficult to achieve the desired effect with a single solvent
[0007] The prior art lacks an oil decolorizing agent with simple process, convenient use, small dosage, low cost, and high-efficiency decolorization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] The preparation method of the sulfonated polyimide used in the present invention is as follows:

[0057] (1) Add sulfonated diamine monomer, non-sulfonated diamine monomer, NMP, and triethylamine to a dry three-necked bottle equipped with a condenser tube and a nitrogen gas inlet and outlet, and stir at room temperature and nitrogen atmosphere until two Dissolve the amine monomer completely, then add equimolar 1,4,5,8-naphthalene dicarboxylic anhydride and 1 to 2 times the amount of benzoic acid to the reaction flask, heat the reaction system to 70-100°C, and React at low temperature for 2-10 hours, then rise to 170-190°C, and react for 5-50 hours;

[0058] (2) The resulting highly viscous sulfonated polyimide solution is directly or diluted with m-cresol and precipitated into acetone or ethyl acetate, and the precipitated sulfonated polyimide is washed with acetone or acetic acid After washing with ethyl ester for 1 to 3 times, dry it.

[0059] A kind of oil product ...

Embodiment 1

[0072] Heat 4,000 parts by weight of first-line diesel oil with a color number of 5.1 to 75°C and keep the temperature constant;

[0073] Under a constant temperature environment, add 100 parts by weight of N-methylpyrrolidone, 20 parts by weight of 1,3-diethyl acetone dicarboxylate, 5 parts by weight of phenylmalonic acid, 15 parts by weight of Surfactant, at 70-80°C, stir for 60 minutes;

[0074] After separating the colored phase, continue to add 20 parts by weight of activated clay, 0.5 parts by weight of ZSM-5 molecular sieve catalyst and 3 parts by weight of sulfonated polyimide, heat up to 120-150 degrees Celsius, and keep stirring for 1-3 hours for decolorization;

[0075] Cool the decolorized fuel oil to room temperature, and filter to obtain the finished fuel oil. After testing, the color number of the obtained fuel product was 1.4, and the oil yield was 97.2%.

Embodiment 2

[0077] Heat 4000 parts by weight of refined diesel oil with a color number of 5.8 to 75°C and keep the temperature constant;

[0078] Under a constant temperature environment, add 100 parts by weight of N-methylpyrrolidone, 20 parts by weight of 1,3-diethyl acetone dicarboxylate, 5 parts by weight of phenylmalonic acid, 15 parts by weight of Surfactant, at 70-80°C, stir for 60 minutes;

[0079] After separating the colored phase, continue to add 10 parts by weight of activated clay, 0.5 parts by weight of ZSM-5 molecular sieve catalyst and 1 part by weight of sulfonated polyimide, heat up to 120-150 degrees Celsius, and keep stirring for 1-3 hours for decolorization;

[0080] Cool the decolorized fuel oil to room temperature, and filter to obtain the finished fuel oil. After testing, the color number of the obtained fuel product was 1.3, and the oil yield was 98.1%.

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Abstract

The invention relates to an oil decolorant which is prepared from 100 weight parts of N-methyl pyrrolidone, 10-30 weight parts of diethyl 1,3-acetonedicarboxylate, 1-20 weight parts of phenylmalonic acid, and 10-30 weight parts of surfactant. According to the invention the reaction of phenylmalonic acid with basic compounds is utilized, and the sulfonated polyimide can promote the adsorption of acidic compounds in the adsorbent material. Acidic compounds and the basic compounds are separately removed to achieve efficient decolorization.

Description

technical field [0001] The invention relates to a decolorizing agent used for oil products such as circulating oil, regular diesel oil, reduced line oil, and machine oil refining. Background technique [0002] As we all know, the gas oil produced in the process of thermal cracking and coking has high content of unsaturated hydrocarbons and poor oil stability, so it cannot be directly used as a finished product. It is generally used as a raw material for catalytic cracking, or as a blending component of internal combustion engine fuel after hydrorefining. The refining process of straight-run gas oil is insufficient, and usually contains trace impurities, such as colloids, sulfur-containing, nitrogen-containing or nitrogen-containing non-hydrocarbon compounds, etc., resulting in a darker color of the product. During the storage of this kind of diesel products, due to the chemical or physical action of impurities, the color of the product will be further deepened, which will r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/20C10G29/22C10G29/24C10G53/08
CPCC10G29/20C10G29/22C10G29/24C10G53/08
Inventor 常军君
Owner 云南聚中能源科技有限公司