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Method for improving crude oil distillation yield by utilizing ultrasonic wave

A crude oil distillation and ultrasonic technology, which is applied in the field of improving the yield of crude oil distillation by ultrasonic waves, can solve the problems of difficult to meet the atmospheric and vacuum distillation of crude oil, the influence of adding additives to processing, and increase the operation process, so as to improve the viscosity of crude oil, reduce the molecular weight, simplify the Effects of operating procedures

Active Publication Date: 2013-12-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology of adding aromatics-rich catalytic cracking oil and furfural extraction oil to the crude oil atmospheric and vacuum distillation unit has been applied industrially, while other types of additives, such as surface active substances, low molecular alcohols and small molecular compounds, have not yet been realized. The reasons for hindering its industrial application are as follows: 1. The addition of additives will have an impact on subsequent processing; 2. Factors such as the source of additives and processing costs restrict its industrial application
[0003] There is no domestic report of using ultrasonic wave to increase the yield of crude oil distillation, mainly because there are many foreign studies. One method is to mix crude oil, atmospheric residue, vacuum residue, fuel oil, etc., and then use ultrasonic treatment , the raw material used in this method is a mixture of some distillate oils, which is difficult to meet the needs of crude oil atmospheric and vacuum distillation; another method is to make an emulsion of crude oil or distillate oil and an aqueous solution, and then use ultrasonic treatment. Emulsification increases the operation process and increases the production cost, and the water content of the emulsion is high. Under the action of ultrasonic waves, it forms a highly emulsified state, and it is very difficult to break the emulsion, which also limits the application of ultrasonic waves.

Method used

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  • Method for improving crude oil distillation yield by utilizing ultrasonic wave
  • Method for improving crude oil distillation yield by utilizing ultrasonic wave
  • Method for improving crude oil distillation yield by utilizing ultrasonic wave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 150mL crude oil for ultrasonic treatment at 100°C and 1 standard atmospheric pressure. The properties of crude oil are shown in Table 1. The hydrogen donor is formic acid, and the addition amount is 3% of the crude oil mass. Ultrasonic parameters are: ultrasonic frequency is 20 kHz, ultrasonic amplitude is 62 μm, and ultrasonic action time is 30 min. The test results are shown in Table 2.

[0017] Table 1

[0018] project

crude oil

Density (20℃), g cm -3

Viscosity (50℃), mm 2 ·s -1

freezing point, ℃

Charcoal residue, %

Colloid, w%

Asphaltenes, w%

w (wax), w%

Moisture, w%

0.9224

118.90

-41.00

5.67

16.70

0.10

4.20

0.68

[0019] Table 2

[0020]

[0021] It can be seen from the data in Table 2 that after ultrasonic treatment, the yield of distillate oil at <350°C can be increased by 5.9 percentage points, the yield of distillate oil at 350°C-500°...

Embodiment 2

[0023] Take 150mL crude oil for ultrasonic treatment at room temperature and 1 standard atmospheric pressure. The properties of crude oil are shown in Table 3. The hydrogen donor is tetralin, and the addition amount is 2% of the crude oil. Ultrasonic parameters are: ultrasonic frequency is 20 kHz, ultrasonic amplitude is 70 μm, and ultrasonic action time is 45 min. The test results are shown in Table 4.

[0024] table 3

[0025] project

crude oil

Density (20℃), g cm -3

Viscosity (50℃), mm 2 ·s -1

freezing point, ℃

Charcoal residue, %

Colloid, w%

Asphaltenes, w%

w (wax), w%

Moisture, w%

0.8967

28.30

23.00

4.88

11.5

<0.1

13.5

trace

[0026] Table 4

[0027]

[0028] From the data in Table 4, it can be seen that after ultrasonic treatment, the yield of distillate oil at < 350 ° C is increased by 4.9 percentage points, the yield of distillate oil at 350 ...

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Abstract

The invention relates to a method for improving crude oil distillation yield by utilizing ultrasonic wave. The method comprises the following steps of: based on the mass of the crude oil as reference, adding 0.5-10% of organic hydrogen supplier into crude oil with water mass fraction of being less than or equal to 1%, and processing the crude oil with ultrasonic wave, wherein the viscosity of the crude oil added with the organic hydrogen supplier at a processing temperature is less than or equal to 100mm<2> / s, frequency of the ultrasonic wave is 20-50KHz, and amplitude of the ultrasonic wave is 25-112mu m; and carrying out reduced-pressure distillation on the crude oil processed by the ultrasonic wave.

Description

technical field [0001] The invention relates to a method for increasing the yield of crude oil distillation by using ultrasonic waves, in particular, a method for increasing the yield of fractions below 500°C in crude oil distillation by using ultrasonic waves. Background technique [0002] The decrease in the yield of light oil caused by the shortage of oil resources and the heavy and inferior crude oil has become a "bottleneck" restricting the survival and development of my country's oil processing enterprises. The research and development of advanced processing technology for crude oil, especially heavy crude oil, has increased The output of light oil has become one of the key points in the development of refining technology at home and abroad. One of the effective ways is to increase the yield of atmospheric and vacuum distillation of crude oil by adding additives. There are domestic and foreign reports on this aspect of research. The technology of adding aromatics-rich ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/02
Inventor 王振宇徐振洪王林沈明欢李本高
Owner CHINA PETROLEUM & CHEM CORP