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A method and system for upgrading inferior oil with high yield of heavy upgraded oil

A low-quality oil upgrading technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc., to achieve the effect of improving the effective utilization of resources, improving economic efficiency, and high upgrading efficiency

Active Publication Date: 2022-06-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modified oil yield of the heavy residual oil processed by this method is only 75% to 85%, and the metal (Ni+V) content in the modified oil is more than 100 micrograms per gram.

Method used

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  • A method and system for upgrading inferior oil with high yield of heavy upgraded oil
  • A method and system for upgrading inferior oil with high yield of heavy upgraded oil
  • A method and system for upgrading inferior oil with high yield of heavy upgraded oil

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Experimental program
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Effect test

specific Embodiment approach

[0076] A specific embodiment, in step (3), the separation treatment includes step (3-1) and step (3-2):

[0077] (3-1) The obtained conversion product in the step (2) is separated at the second pressure and the second temperature to obtain a gas component and a liquid component; in the step (3-1), gas products such as hydrogen are preferably separated, The gas component is rich in hydrogen, preferably the hydrogen content is above 85% by weight; the second pressure can be 10-25 MPa, preferably 13-20 MPa, for the convenience of measurement, the second pressure generally refers to the separation of gas components The outlet pressure when the separation device is opened, the second temperature can be 380-470 ° C, preferably 400-440 ° C, for the convenience of measurement, the second temperature generally refers to the outlet temperature when the liquid component leaves the separation device; in this step, the separation The method can be distillation, fractional distillation and ...

Embodiment 1-5

[0100] In a medium-sized device, the inferior oil as the raw material for upgrading is firstly extracted and separated, the obtained residue is mixed with the catalytic cracking oil slurry and entered into a slurry bed reactor for conversion reaction, and the conversion product is subjected to separation treatment, and the separation treatment is carried out in two fractionation towers. The first separation product and the second separation product are obtained, the first separation product is mixed with the upgraded raw material and enters the extraction separation unit, and the obtained residue is partially thrown out, and part is mixed with the catalytic cracking oil slurry to continue the conversion reaction, conversion reaction and separation. The specific conditions and results of the treatment are listed in Table 2-1, Table 2-2 and Table 2-3.

[0101] As can be seen from Tables 2-2 and 2-3, by adopting the method and system of the present invention, the conversion rate o...

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Abstract

The present invention relates to a method and system for upgrading inferior oil with high production of heavy upgraded oil. The method comprises: (1) extracting and separating the inferior oil used as the raw material for upgrading in an extraction and separation unit to obtain upgraded oil and residue (2) carrying out a conversion reaction with at least part of the residue obtained in step (1) in a conversion reactor under hydrogen-facing conditions with optional catalytic cracking oil slurry to obtain a conversion product; (3) converting the obtained product in step (2) The conversion product is subjected to separation treatment to obtain at least the first separation product; (4) optionally, the first separation product obtained in step (3) is returned to step (1) to carry out the extraction separation together with the inferior oil. The method and the system provided by the invention can maintain the long-term operation of the system under the condition that the external residue is as little as possible.

Description

technical field [0001] The present invention relates to a low-quality oil upgrading method and system for prolific production of heavy upgrading oil. Background technique [0002] In recent years, the deterioration of fossil fuels has been increasing year by year. Moreover, the output of low-quality fuel oil such as residual oil, inferior crude oil, shale oil, oil sands heavy oil and coal-derived oil is also increasing year by year. Such inferior oils are characterized by high density, high viscosity, high content of heteroatoms (sulfur, nitrogen, heavy metals) or high asphaltene content. In addition, the existing processing technology (such as delayed coking) developed for this kind of inferior oil has problems such as high coke yield, low effective utilization of energy, poor economic benefit, and unenvironmental production process. Therefore, the further development of high-efficiency and green upgrading technologies for such inferior oils has become one of the developm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14
CPCC10G67/14C10G2300/70
Inventor 龙军董明侯焕娣申海平李吉广佘玉成王翠红王春璐许可陶梦莹赵飞
Owner CHINA PETROLEUM & CHEM CORP