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Heavy oil processing technology and processing device

A processing technology, heavy oil technology, applied in the petroleum industry, hydrocarbon oil treatment, cracking, etc., can solve the problems of low utilization rate of petroleum resources, low yield, etc.

Active Publication Date: 2016-10-05
HUNAN WANTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the most critical problem is that in the existing delayed coking method, a large amount of coke and low-value dry gas will be produced in the coke tower coking process, and the total liquid yield (light fuel oil products account for 1% of heavy oil raw materials) percentage) is only 72% to 75%, and the yield is low, which makes the utilization rate of petroleum resources low

Method used

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  • Heavy oil processing technology and processing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] use figure 1 The processing unit shown processes heavy oil:

[0072] Preheat the materials inside the heavy oil tank 3 and the catalyst tank 2 to 50°C, and pump the two into the reactor 6 at a mass ratio of 98:2. Start the heating device 6-1 and the mechanical decoking device 6-2 to heat and stir respectively, and the material starts to undergo low-temperature catalytic carbonization reaction. When the temperature in the reactor 6 rises to 300°C, lift the mechanical decoking device 6-2 to above the liquid level and close it. When the material inside the reactor 6 is heated to 420°C, the heating device 6-1 is turned off, the entire low-temperature catalytic carbonization time lasts for 2 hours, the tank top gauge pressure is -0.5KPa, and the generated high-temperature oil gas escapes and into the condenser 10. Open the cold glycol circulating water supply pipeline 9 and the cold glycol circulating water return pipeline 11, exchange heat with the high-temperature oil a...

Embodiment 2

[0075] use figure 1 The processing unit shown processes heavy oil:

[0076] Preheat the materials inside the heavy oil tank 3 and the catalyst tank 2 to 95°C, and pump the two into the reactor 6 at a mass ratio of 96:4. Start the heating device 6-1 and the mechanical decoking device 6-2 to heat and stir respectively, and the material starts to undergo low-temperature catalytic dry distillation reaction. When the temperature in the reactor 6 rises to 350°C, lift the mechanical stirring device 6 -2 to above the liquid level and close it. Turn off the heating device 6-1 until the material inside the reactor 6 is heated to 470°C, the entire low-temperature catalytic carbonization time lasts for 4 hours, the tank top gauge pressure is 1.5KPa, and the generated high-temperature oil gas escapes and enters condensation device 10. Open the cold ethylene glycol circulating water supply pipeline 9 and the cold ethylene glycol circulating water return pipeline 11 to exchange heat with ...

Embodiment 3

[0079] use figure 1 The processing unit shown processes heavy oil:

[0080] Preheat the materials inside the heavy oil tank 3 and the catalyst tank 2 to 70°C, and pump the two into the reactor 6 at a mass ratio of 97:3. Start the heating device 6-1 and the mechanical decoking device 6-2 to heat and stir respectively, and the material starts to undergo low-temperature catalytic carbonization reaction. When the temperature in the reactor 6 rises to 315°C, lift the mechanical decoking device 6-2 to above the liquid level and close it. Turn off the heating device 6-1 until the material inside the reactor 6 is heated to 455°C, the entire low-temperature catalytic carbonization time lasts for 3 hours, the tank top gauge pressure is 1KPa, and the generated high-temperature oil gas escapes and enters the condenser within 10. Open the cold ethylene glycol circulating water supply pipeline 9 and the cold ethylene glycol circulating water return pipeline 11 to exchange heat with the h...

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Abstract

The invention provides a heavy oil processing technology. The processing technology comprises the following steps that 1, under the air isolation condition, heavy oil and a catalyst are subjected to a dry distillation reaction under the stirring condition to obtain high-temperature oil gas; 2, the high-temperature oil gas obtained in the step 1 is condensed and separated sequentially to obtain light fuel oil. According to the processing technology, the dry distillation reaction of the heavy oil is conducted under the stirring condition, therefore, not only can the generating amount of foam be decreased, but also the heavy oil raw material can be dispersed, and the evaporation area of liquid drops is increased; in addition, due to the fact that the surface curvature of the liquid drops is increased, the vapor pressure is increased, therefore, the gasification rate of the heavy oil is greatly increased in the movement process, the generating amount of coke generated in the process of producing the light oil through the heavy oil is decreased, and then the liquid yield in heavy oil processing is increased. The invention further provides a heavy oil processing device.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a heavy oil processing technology and processing device. Background technique [0002] Heavy oil refers to crude oil with high bitumen and colloid content and high viscosity. Due to its high density and high underground viscosity, it is also called heavy oil. With the decrease of conventional oil, the inferior and heavy quality of crude oil has become a global trend. According to incomplete statistics, the technically recoverable resources of heavy oil in the world amount to 65 billion tons. Therefore, the processing technology for lightening heavy oil has gradually become the focus of scientific research. [0003] At present, the processing technology of heavy oil lightening mainly includes thermal cracking, visbreaking and delayed coking. The thermal cracking process uses vacuum diesel oil as raw material, which has been eliminated now; visbreaking ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G57/00
CPCC10G11/02
Inventor 张春伟曹志德瞿吉利李艳芬宁子超
Owner HUNAN WANTONG TECH
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