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A method for converting heavy oil into light oil using a suspended bed hydrogenation process

A suspended bed, light oil technology, applied in the field of heavy oil hydrogenation, can solve the problem of high sulfur and nitrogen content, and achieve the effects of reducing coking rate, reducing difficulty and improving yield

Active Publication Date: 2020-12-11
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect of high sulfur and nitrogen content in the light oil obtained by the heavy oil suspension bed hydrogenation conversion in the prior art, so as to provide a method for using the suspension bed hydrogenation process to convert the heavy oil into light oil method

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  • A method for converting heavy oil into light oil using a suspended bed hydrogenation process
  • A method for converting heavy oil into light oil using a suspended bed hydrogenation process

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Effect test

Embodiment 1

[0037] This embodiment provides a method for converting heavy oil into light oil using a suspended bed hydrogenation process, comprising the following steps:

[0038] (1) After the reaction raw material oil, the first hydrogenation catalyst and hydrogen are mixed, they are transported to the first suspension bed hydrogenation reactor, and the operating pressure in the first suspension bed hydrogenation reactor is controlled to be 12MPa, and the temperature is 460°C. The liquid hourly space velocity is 0.8h -1 , The volume ratio of hydrogen to oil is 700 to carry out the first catalytic hydrogenation reaction;

[0039] The first hydrogenation catalyst includes ferrous sulfate and sulfur powder; the first hydrogenation catalyst is in the reaction raw material oil, and the concentration is 10 μ g / g in terms of metal;

[0040] (2) The product and catalyst slurry from the first suspended bed hydrogenation reactor are sent into the second suspended bed hydrogenation reactor, and th...

Embodiment 2

[0044] This embodiment provides a method for converting heavy oil into light oil using a suspended bed hydrogenation process, comprising the following steps:

[0045] (1) if figure 1 As shown, the first suspended bed hydrogenation reactor and the second suspended bed hydrogenation reactor are arranged in series;

[0046] The reaction raw material oil, the first hydrogenation catalyst and hydrogen are sent to the first suspension bed hydrogenation reactor, and the operating pressure in the first suspension bed hydrogenation reactor is controlled to be 22MPa, the temperature is 390°C, and the liquid hourly space velocity is 1.4h -1 , The volume ratio of hydrogen to oil is 2000 to carry out the first catalytic hydrogenation reaction;

[0047] The first hydrogenation catalyst includes sodium nitrate and sulfur powder; the concentration of the first hydrogenation catalyst in the reaction raw material oil is 1500 μg / g in terms of metal;

[0048] (2) The product and catalyst slurry...

Embodiment 3

[0052] This embodiment provides a method for converting heavy oil into light oil using a suspended bed hydrogenation process, comprising the following steps:

[0053] (1) After the reaction raw material oil, the first hydrogenation catalyst and hydrogen are mixed, they are transported to the first suspension bed hydrogenation reactor, and the operating pressure in the first suspension bed hydrogenation reactor is controlled to be 18MPa, and the temperature is 410°C. The liquid hourly space velocity is 1h -1 , The volume ratio of hydrogen to oil is 1600 to carry out the first catalytic hydrogenation reaction;

[0054] The first hydrogenation catalyst includes chromium nitrate and sulfur powder; the concentration of the first hydrogenation catalyst in the reaction raw material oil is 500 μg / g in terms of metal;

[0055] (2) The product and catalyst slurry from the first suspended bed hydrogenation reactor are sent into the second suspended bed hydrogenation reactor, and the ope...

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Abstract

The invention provides a method for converting heavy oil into lightweight oil by a suspended bed hydrogenation process. On one hand, firstly, through first catalytic hydrogenation, macromolecular substances such as pectin and asphaltene in reaction raw material oil are converted into small molecular substances through thermal cracking and hydrogen cracking; at the moment, a macromolecular sulfur-containing and nitrogen-containing compound in the raw material is also cracked into a small molecular sulfur-containing and nitrogen-containing compound; then, through second catalytic hydrogenation,a newly added second hydrogenation catalyst is used for treating the small molecular sulfur-containing and nitrogen-containing compound; the desulfurization and denitrification difficulty of a catalyst is lowered; the desulfurization rate and the denitrification rate of raw materials are greatly improved; on the other hand, the yield of the lightweight oil is effectively improved; the coking rateis reduced.

Description

technical field [0001] The invention relates to the technical field of hydrogenation of heavy oil, and belongs to a technology for hydrogenation of heavy and residual oil by using a suspension bed. Background technique [0002] In recent years, with the increasing shortage of petroleum resources in the world, the trend of heavy and inferior crude oil becoming more and more serious, the rapid decrease in market demand for heavy fuel oil and the continuous and rapid growth of demand for light fuel oil, the heavy and inferior Oil deep processing technology has become the focus and difficulty in the development of oil refining industry. In addition, my country's basic national conditions of poor oil and rich coal, and some petrochemical products can also be obtained from coal gasification, dry distillation and other products, so the use of advanced coal conversion technology to produce light oil and chemical products is not only beneficial to the chemical industry The adjustment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02C10G45/08
CPCC10G45/08C10G67/02C10G2300/10C10G2300/1037C10G2300/202
Inventor 刘畅丁同利高忠超周晓艳崔永君
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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