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A kind of heavy oil hydrogenation conversion method

A heavy oil hydrogenation, heavy oil technology, applied in the direction of hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problem of difficult to achieve the effect of upgrading, reduce the probability of secondary reaction, improve the rate of lightening and fractions The effect of high oil yield and heavy oil conversion rate

Active Publication Date: 2017-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101993723A discloses a method and device for upgrading inferior heavy oil, which relies on a catalytic cracking unit, sets an inferior heavy oil upgrading reactor, and uses a carbon-deposited catalyst as a heat carrier to form a fluidized inferior heavy oil upgrading process, which can Improve the yield of light oil in the heavy oil conversion process, but it is only suitable for the secondary processing of low-quality heavy oil raw materials with low heavy metal (Ni+V) content
Therefore, if the reaction is carried out under the same reaction conditions, it will be difficult to achieve a better modification effect

Method used

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  • A kind of heavy oil hydrogenation conversion method
  • A kind of heavy oil hydrogenation conversion method
  • A kind of heavy oil hydrogenation conversion method

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preparation example Construction

[0040] In the method provided by the present invention, the preparation method of the hydrothermal cracking catalyst comprises: contacting the metal source and the nonmetal source with a sulfidation agent in the presence of a solvent and under sulfidation reaction conditions to obtain the hydrothermal cracking catalyst. Wherein, the metal source is a substance containing V, Ni and lanthanide metal elements and / or Group VIB metal elements, the non-metal source is a substance containing carbon, and the metal source, non-metal source and vulcanizing agent The amount of the metal element contained in the solid product obtained after contacting contains 2-15% by weight of metal elements and 85-98% by weight of non-metallic elements, and based on the weight of the metal elements, the metal elements of more than 95% by weight are V, Ni and lanthanide metal elements and / or Group VIB metal elements; based on the weight of non-metal elements, more than 95% by weight of the non-metal elem...

Embodiment 1-4

[0063] The experimental flow chart is attached figure 1 As shown, two separation devices are used to mix the residual oil raw material with hydrogen, fresh catalyst, and heavy wax oil in the second reaction zone in the raw material tank, and then transport it to the preheating furnace through a pump, and preheat it to 380°C to enter the first reaction Reactor, the reaction product of the first reactor enters the separation unit D1, and at least the product of 500°C residual oil in the heavy oil raw material according to the yield of <500°C distillate oil. The experimental conditions and reaction results are listed in Table 3.

Embodiment 5

[0065] Use as attached figure 2 The device and process shown are different from Example 1 in that the first reactor and the second reactor products use the same set of separation equipment D1, and the residue raw material is mixed with hydrogen and heavy wax oil from the separation unit in the raw material tank After uniformity, it is transported to the preheating furnace by a pump, preheated to a certain temperature, and enters the first reactor for reaction. The reaction product of the first reactor enters the separation unit D1, and at least the product <430°C is separated, and the obtained residue is mixed with hydrogen and fresh catalyst. After mixing evenly and preheating, it enters the second reactor, and the reaction product of the second reactor enters the separation unit D1, and is separated to obtain light distillate oil, heavy diesel oil and residual oil. The experimental conditions and reaction results are listed in Table 3.

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Abstract

The invention provides a heavy oil hydro-conversion method. The method comprises the following steps that: (1) a heavy oil raw material enters a first reactor in presence of hydrogen and presence or absence of hydrogen-thermal cracking catalyst for hydrogen-thermal cracking; (2) at least residual oil having a boiling point more than 420 DEG C is separated from the reaction product in the first reactor; (3) the residual oil and hydrogen enter a second reactor, contact with a hydrogen-thermal cracking catalyst, and are subjected to a hydrogen-thermal cracking reaction at a relatively low temperature; (4) at least residual oil having a boiling point more than 420 DEG C is separated from the reaction product in the second reactor, and partial separated residual oil is returned to the second reactor for further reacting; and (5) the rest residual oil enters a liquid-solid separation unit, and is separated to obtain a liquid phase and a catalyst-enriched solid phase, the liquid phase is recycled to a second reaction region, the solid phase is subjected to multi-stage sieving and the solid having particle size being less than 10mu m is recycled to the reactor to realize recycling; the reacting temperature of the second reactor is 5-50 DEG C lower than that of the first reactor. Compared with the prior art, the method has the advantages of remarkably improving the heavy oil conversion rate and light oil yield.

Description

technical field [0001] The invention relates to a method for upgrading heavy hydrocarbon oil raw materials, more precisely, relates to a method for realizing lightening of heavy oil by hydrothermal cracking under different reaction conditions. Background technique [0002] With the continuous increase of crude oil production, the increasing market demand for light fuel oil and the increasing environmental protection requirements, refineries are paying more and more attention to the technology of residual oil lightening. There are two types of residual oil lightening methods: thermal processing and catalytic processing. [0003] CN101463267A patent discloses a method of using visbreaking to process heavy oil and realize the lightening of heavy oil. The method is to firstly carry out vacuum distillation on the visbreaking raw material to obtain heavy distillate oil and >540°C vacuum residue, and then The heavy cycle oil is visbroken first and then mixed with the >540°C ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
CPCC10G67/02
Inventor 王子军侯焕娣董明
Owner CHINA PETROLEUM & CHEM CORP
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