Method for preparing environment-friendly aromatic oil from catalytic cracking slurry oil

A technology for catalytic cracking of oil and aromatic oil, applied in the field of chemical industry and materials, can solve the problem of low content of toxic polycyclic aromatic hydrocarbons, achieve low raw material and operating costs, and be easy to put into industrial production

Inactive Publication Date: 2010-12-08
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The raw materials used for the environmentally friendly aromatic oil prepared by solvent extraction are petroleum vacuum distillate oil with low content of toxic polycyclic aromatic hydrocarbons, and ...

Method used

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  • Method for preparing environment-friendly aromatic oil from catalytic cracking slurry oil
  • Method for preparing environment-friendly aromatic oil from catalytic cracking slurry oil
  • Method for preparing environment-friendly aromatic oil from catalytic cracking slurry oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 40g of catalytic cracking oil slurry produced in the Yangtze River Basin after removal of catalyst particles and dewaxing, 30mL of petroleum ether with a boiling point of 60-90°C, and 15mL of furfural into the extraction tank. For the extraction tank, see figure 1 , heated to 45°C, stirred for 20 minutes, then allowed to stand for stratification, separated the lower layer solution, then added 10mL furfural, stirred at 45°C for 20 minutes, stood for stratification, separated the lower layer solution, and then re- Use 5mL furfural to extract 10 times according to the above-mentioned operation successively; After the sherwood oil is evaporated off at last remaining supernatant solution, obtain environmental protection aromatic oil 4.18g, productive rate 10.2%, the recovery rate based on the content of useful aromatic oil in the catalytic oil slurry is 52%. Through IP346 method analysis, the polycyclic aromatic hydrocarbon content in the gained environment-friendly arom...

Embodiment 2

[0026] Add 40g of catalytic cracking oil slurry (produced in the Yangtze River Basin) after removal of catalyst particles and dewaxing, 30mL of 90-120°C petroleum ether, and 15mL of furfural into the extraction tank, heat to 30°C, stir for 30Min, and then stand to separate layer, after separating the lower layer solution, add 10mL furfural, stir at 30°C for 30Min, then stand to separate layers. The lower layer solution was separated, and the remaining upper layer solution was extracted 10 times with 5 mL furfural according to the above operation. After the petroleum ether was evaporated from the upper layer solution, 4.62 g of environmentally friendly aromatic oil was obtained, with a yield of 11.8% and a recovery of 58% (based on the content of useful aromatic oil in the catalytic oil slurry). According to IP346 method analysis, the content of polycyclic aromatic hydrocarbons in the obtained environmentally friendly aromatic oil is less than 2.93%; through high-pressure liqui...

Embodiment 3

[0028] Add 80g of catalytic cracking oil slurry (produced in Karamay) after removal of catalyst particles and dewaxing, 60mL of petroleum ether at 60-90°C, and 20mL of furfural into the extraction tank, heat to 50°C, stir for 10Min, and then stand to separate layers . After the lower layer solution was separated, 20 mL of furfural was added, stirred at 50°C for 10 min, and allowed to stand to separate layers. The lower layer solution was separated, and the remaining upper layer solution was sequentially extracted 10 times with 10 mL furfural according to the above operation. After the petroleum ether was evaporated from the upper layer solution, 18.4 g of environmentally friendly aromatic oil was obtained, with a yield of 22.9% and a recovery of 76.3% (based on the content of useful aromatic oil in the catalytic oil slurry). Analyzed by IP346 method, the content of polycyclic aromatic hydrocarbons in the obtained environment-friendly aromatic oil is less than 2.66%; analyzed ...

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Abstract

The invention provides a method for preparing environment-friendly aromatic oil from catalytic cracking slurry oil. The environment-friendly aromatic oil which meets the European 2005/69/EC directive is prepared by performing repeated extraction with double solvents on the catalytic cracking slurry oil by using an alkyl solvent with small polarity and the solvents such as furfural, N-methylpyrrolidone, dimethyl sulfoxide and the like with large polarity. Toxic polycyclic aromatic hydrocarbon in the obtained environment-friendly aromatic oil is less than 3 percent, and the benzopyrene content is less than 0.1ppm, so the oil can be used as environment-friendly rubber filling oil and environment-friendly aromatic oil for other purposes.

Description

technical field [0001] The invention belongs to the field of chemical industry and materials, and relates to the preparation of environment-friendly aromatic oil from catalytic cracking oil slurry. Background technique [0002] Catalytic cracking oil slurry is the residue after crude oil refining, and the annual output in my country is more than 7.5 million tons. With the increasing consumption of gasoline and diesel, the output of catalytic cracking oil slurry will be higher in the future. The previous catalytic cracking oil slurry was only burned as fuel, but now it can be used to produce chemical products such as rubber filler oil, plastic plasticizer, lubricating oil, aromatic hydrocarbon formaldehyde resin, etc., which not only saves oil resources, but also creates huge economic benefits . The aromatic hydrocarbon type rubber extender oil produced by catalytic cracking oil slurry has good compatibility with general-purpose rubber, which can make rubber have good proce...

Claims

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Application Information

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IPC IPC(8): C10G53/04
Inventor 郑炎松宋松
Owner HUAZHONG UNIV OF SCI & TECH
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