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Method for applying cholic acid to desulfurization of coking diesel oil

A technology for coking diesel oil and cholic acid, which is applied in the direction of multi-stage series refining process treatment, etc., can solve the problems of mild operating conditions, pollution, corrosion, etc., and achieves the effects of mild reaction conditions, simple process flow, and simple and easy operation.

Active Publication Date: 2015-12-09
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fuel oil treated by the traditional acid-alkali refining method is difficult to meet the new low-sulfur standard, and the process itself has problems such as pollution and serious corrosion; because the biological desulfurization technology has not been well resolved in terms of desulfurization speed and stability , so biological desulfurization has not yet shown its obvious advantages; catalytic oxidation desulfurization technology is very popular in small and medium-sized refineries because of its mild operating conditions and low production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add cholic acid to coked diesel oil at 0.05 mg / ml at room temperature, and then place it in a constant temperature water bath environment to heat and stir at a constant temperature. The heating temperature is 36.5°C, and the reaction is heated for 1 hour. The power of the constant temperature water bath magnetic stirrer is 40w, and the rotation speed is 20rpm Add catalyst and oxidant successively to coked diesel oil, catalyst is trichloroacetic acid, oxidant is the hydrogen peroxide solution that mass concentration is 30%; The volume ratio of coked diesel oil, catalyst and oxidizer is 10: 2: 1, then use DF Catalytic oxidation reaction is carried out in -101S collector type constant temperature heating magnetic stirrer, the reaction time is 50min, the heating temperature is 50°C, and the stirring speed is 40rpm; then, take out the coked diesel oil that has been reacted through the above steps, cool to room temperature, and then Add the extractant N,N-dimethylformamide, th...

Embodiment 2

[0024]Add sodium cholate at 0.5 mg / ml to coked diesel oil at room temperature, and then place it in a constant temperature water bath environment to heat and stir at a constant temperature. The heating temperature is 37°C, and the reaction is heated for 15 hours. 30rpm; add the catalyst and oxidant to the coked diesel successively, the catalyst is formic acid, and the oxidant is hydrogen peroxide solution with a mass concentration of 30%; the volume ratio of coked diesel, catalyst and oxidant is 10:2.5:2, and then use The catalytic oxidation reaction is carried out in a collector type constant temperature heating magnetic stirrer, the reaction time is 70min, the heating temperature is 60°C, and the stirring speed is 40rpm; then, the coked diesel oil that has undergone the above steps is taken out, cooled to room temperature, and then added to extract N, N-dimethylformamide, the volume ratio of extractant and coked diesel oil is 1:1, and then stirred with a magnetic stirrer for ...

Embodiment 3

[0026] Add ursodeoxycholic acid tablets at 0.7mg / ml to coked diesel oil at room temperature, and then place it in a constant temperature water bath environment to heat and stir at a constant temperature. The heating temperature is 37.5°C, and the reaction is heated for 20 hours. The power of the constant temperature water bath magnetic stirrer is 40w , rotating speed is 35rpm; Catalyst and oxidant are successively added in the coked diesel oil, and catalyzer is formic acid, and oxidant is the hydrogen peroxide solution that mass concentration is 30%; Coked diesel oil, catalyzer and oxidant volume ratio are 10: 3: 3, then use The catalytic oxidation reaction is carried out in the DF-101S collector type constant temperature heating magnetic stirrer, the reaction time is 90min, the heating temperature is 70°C, and the stirring speed is 40rpm; then, take out the coked diesel oil that has been reacted through the above steps, and cool it to room temperature. Then add the extractant ...

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Abstract

The invention discloses a method for applying cholic acid to desulfurization of coking diesel oil. The method comprises steps as follows: (1), 0.05-1.0 mg / ml of a cholic acid active agent is added to the coking diesel oil, and then the coking diesel oil is heated and stirred for 1-24 h at constant temperature in a constant-temperature water bath environment; (2), a catalyst and an oxidizing agent are added to the coking diesel oil successively, a volume ratio of the coking diesel oil to the catalyst to the oxidizing agent is 10:2:1-10:4:4, and the coking diesel oil, the catalyst and the oxidizing agent have a catalytic oxidation reaction in a magnetic stirring apparatus for 50-100 min; (3), after the mixture is cooled to the room temperature, an extraction agent is added in a volume ratio of the extraction agent to the mixture being 1:1, the mixture is stirred by the magnetic stirring apparatus for 5-10 min, poured into a separating funnel and left to stand for 20 min, and a diesel oil layer is collected. According to desulfurization refining with the method, the reaction conditions are mild, environmental protection is realized, the desulfurization rate is high, and the coking diesel oil has remarkable yield and is light in color and smell.

Description

technical field [0001] The invention relates to the desulfurization technology of coked diesel oil, in particular to a method for desulfurizing coked diesel oil with high desulfurization rate. Background technique [0002] With the enhancement of people's awareness of environmental protection, people have increasingly strict requirements on the sulfur content of fuel oil. All countries in the world have formulated stricter new regulations on the sulfur content in fuel oil. In 2006, the United States stipulated that the sulfur content of diesel oil should be reduced from 500 μg / g to 15 μg / g; while Europe has implemented the Euro V standard with a sulfur content of 10 μg / g in 2009; Japan is an advanced country that produces clean gasoline, and the JISK2202 gasoline standard implemented In 2005, the Japanese gasoline standard limited the sulfur content to 50ppm, and in 2009, the national unified implementation of the ultra-low sulfur gasoline standard with a sulfur content of 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/14
Inventor 卢朝霞杨波唐建权王浩梁景刘宇恒黄伊琳吕玉广覃宾安
Owner GUANGXI UNIV