A kind of heavy oil hydrogen conversion method

A technology for hydrogen conversion and heavy oil, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problem of difficulty in achieving the effect of upgrading, and achieves reduction of external rejection, improvement of stability, and high conversion rate of heavy oil. Effect
CN104560163BActive Publication Date: 2016-10-26CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2016-10-26

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Abstract

The invention provides a heavy oil hydro-conversion method. The method comprises the following steps: (1) a heavy oil raw material and heavy wax oil enter a first reactor in the presence of hydrogen and in the presence or absence of a hydrogen-thermal cracking catalyst to be subjected to a hydrogen-thermal cracking reaction; (2) the reaction product in the first reactor is separated into light distillate, heavy wax oil and residual oil; (3) the residual oil and hydrogen enter a second reactor, and contact with the hydrogen-thermal cracking catalyst to be subjected to a hydrogen-thermal cracking reaction at a relatively low temperature; (4) the reaction product in the second reactor is separated into light distillate, heavy wax oil and residual oil, the separated heavy wax oil is returned to the first reactor, and the separated residual oil part is respectively returned to the two reactors for further reacting according to a proportion; and the reacting temperature in the second reactor is 5-50 DEG C lower than that in 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 distillate.
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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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