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A kind of heavy oil hydrogen conversion method

A hydrogen conversion and heavy oil technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems such as difficult to achieve the upgrading effect, and achieve the effect of reducing the amount of external dumping, reducing costs, and reducing investment

Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • 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 hydrogen conversion method
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  • A kind of heavy oil hydrogen conversion method

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preparation example Construction

[0036] 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 1～3

[0058] The experimental flow chart is attached figure 1 As shown, the residual oil is transported to the preheating furnace through the pump, preheated to 400°C, mixed with hydrogen and circulating deoiled asphalt, and enters the first reactor for reaction. The reaction product of the first reactor enters the separation unit D, and the fraction is separated Oil products and residual oil, the residual oil enters the solvent deasphalting tower for separation to obtain deasphalted oil and deoiled asphalt, wherein the catalyst-containing deoiled asphalt, catalyst, and hydrogen enter the second reactor, and the reaction product of the second reactor enters the separation unit D A small amount of deoiled bitumen from the solvent deasphalting unit is thrown out to maintain the catalyst concentration and activity in the second reactor to be stable. Analyze and measure the content of toluene insoluble matter in the generated oil, and calculate the yield of distillate oil (including DAO...

Embodiment 4～5

[0060] Use as attached figure 2 The device and process shown are different from Example 1 in that the raw materials entering the first reactor are heavy oil raw materials and heavy wax oil, and the reaction products of the first reactor and the second reactor enter the separation unit D for separation to obtain light fractions oil, heavy wax oil and residual oil, part of the heavy wax oil is recycled back to the first reactor for reaction. 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) heavy oil or heavy oil and hydrogen enter a first reactor to be subjected to a hydrogen-thermal cracking reaction in the presence or absence of a hydrogen-thermal cracking catalyst; (2) deoiled asphalt, a hydrogen-thermal cracking catalyst and hydrogen enter a second reactor, contact with the hydrogen-thermal cracking catalyst, and are subjected to a hydrogen-thermal cracking reaction at a relatively low temperature; (3) the reaction product in the first reactor and the reaction product of the second reactor are mixed and enter a separation unit, and are separated to obtain a distillate product and residual oil; and (4) the residual oil from the step (3) enters a solvent extraction tower to remove asphalt to obtain deasphalted oil and deoiled asphalt, and the deoiled asphalt is returned to the second reactor for further reacting, wherein 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, and improving the light rate of heavy oil.

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): C10G67/00
CPCC10G67/00C10G2300/206C10G2300/70
Inventor 董明侯焕娣王子军李吉广权奕
Owner CHINA PETROLEUM & CHEM CORP
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