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A upgrading method and system for producing high-octane gasoline from low-quality oil

A high-octane gasoline, low-quality technology, applied in the treatment of hydrocarbon oil, petroleum industry, hydrocarbon oil treatment products, etc. In order to improve the effective utilization of resources, low coke yield and stable operation

Active Publication Date: 2021-01-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modified oil yield of the heavy residual oil processed by the method of the present invention is low, only 75% to 85%. At the same time, the metal (Ni+V) content in the modified oil is >100 μg / g, and the fixed bed hydrogenation unit catalyst The life-span is shorter; In addition, the method of the present invention does not directly produce the gasoline and diesel products that meet market demands

Method used

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  • A upgrading method and system for producing high-octane gasoline from low-quality oil
  • A upgrading method and system for producing high-octane gasoline from low-quality oil
  • A upgrading method and system for producing high-octane gasoline from low-quality oil

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Experimental program
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Effect test

Embodiment approach

[0040] In one embodiment, the conversion reaction is carried out in the presence or absence of a conversion catalyst, and the conversion catalyst may contain at least one selected from the group consisting of Group VB metal compounds, Group VIB metal compounds and Group VIII metal compounds. species, preferably at least one of Mo compound, W compound, Ni compound, Co compound, Fe compound, V compound and Cr compound; the conditions of the conversion reaction may include: the temperature is 380-470 ° C, preferably 400- 440°C, the hydrogen partial pressure is 10-25 MPa, preferably 13-20 MPa, and the volume space velocity of the modified raw material is 0.01-2 hours -1 , preferably 0.1-1.0 hours -1 , the volume ratio of hydrogen to the modified raw material is 500-5000, preferably 800-2000, based on the metal in the conversion catalyst and based on the weight of the modified raw material, the consumption of the conversion catalyst is 10-50000 micrograms / g, preferably 30-25000 μ...

specific Embodiment approach

[0044] A specific embodiment, in step (2), the separation process includes step (2-1) and step (2-2):

[0045] (2-1) separating the conversion product obtained in step (1) at a first pressure and a first temperature to obtain a gas component and a liquid component; in step (2-1), gas products such as hydrogen are preferably separated, The gas component is rich in hydrogen, preferably with a hydrogen content of more than 85% by weight; for example, the first pressure can be 10-25 MPa, preferably 13-20 MPa. For the convenience of measurement, the first pressure generally refers to the gas group The outlet pressure when separating the separation device, the first temperature can be 380-470 ° C, preferably 400-440 ° C, for the convenience of measurement, the first temperature generally refers to the outlet temperature when the liquid component leaves the separation device; in this step The separation method can be distillation, fractional distillation and flash distillation, etc.,...

Embodiment 1-5

[0075] In a medium-sized device, the reformed raw material is first subjected to a conversion reaction, and then the conversion product is separated and treated. The separation treatment is carried out in two fractionation towers to obtain the first separated product and the second separated product. The specific details of the conversion reaction and the separated treatment Conditions and results are listed in Table 2.

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Abstract

The invention relates to a quality improving method and system for producing high-octane gasoline from low-quality oil. The method includes the steps: (1) performing conversion reaction on the low-quality oil serving as a quality improving raw material in a conversion reactor under hydrogen-contacting conditions to obtain a conversion product; (2) separating the conversion product to obtain at least one first separation product; (3) extracting and separating the first separation products to obtain quality improved oil and residues; (4) returning the residues to perform the conversion reaction,or externally throwing the residues, or returning parts of the residues to the step (1), performing the conversion reaction and externally throwing parts of the remaining residues; (5) hydrogenatingthe quality improved oil to obtain hydrogenated quality improved oil, and performing catalytic cracking reaction on the hydrogenated quality improved oil. According to the quality improving method andsystem, long-time operation of the system is maintained when the externally thrown residues are as few as possible, and more high-octane gasoline can be produced.

Description

technical field [0001] The invention relates to an upgrading method and system for producing high-octane gasoline from low-quality oil. Background technique [0002] With the development of the economy, the contradiction between the increasing demand for oil resources and the heavy and inferior quality of non-renewable oil resources is increasing day by day; at the same time, the rapid development of the automobile industry and the increasingly stringent environmental protection regulations, the market demand for high-quality gasoline and diesel products The demand is increasing year by year. Therefore, how to efficiently process high-boiling point and highly polar heavy streams (heavy / residual oil) to produce high-quality gasoline products is the research focus of the oil refining industry. [0003] Chinese patent CN1119397A discloses a heavy oil hydrotreating-catalytic cracking combined process method. The residual oil and clarified oil enter the residual oil hydrotreati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/04
CPCC10G67/04C10G2300/305C10G2400/02
Inventor 申海平侯焕娣董明王子军戴立顺龚剑洪李吉广陶梦莹许可赵飞
Owner CHINA PETROLEUM & CHEM CORP