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Combination system and method of supercritical extraction and suspension bed hydrogenation of heavy oil feedstock

A combined system and suspended bed technology, which is applied in the field of combined systems of supercritical extraction and suspended bed hydrogenation, can solve the problems of increasing the tendency of coking and deactivation of catalyst coking.

Active Publication Date: 2018-06-29
北京和利凯石化技术有限公司
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Problems solved by technology

The disadvantage of this patent is that the raw material of coal tar is not fully utilized, and the hydrogenation of tail oil circulation increases the tendency of coking
[0009] The current conventional hydroprocessing method usually requires further addition of catalyst to ensure the conversion rate. However, due to the large amount of heavy components in the raw material, it is easy to cause coking and deactivation of the catalyst.

Method used

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  • Combination system and method of supercritical extraction and suspension bed hydrogenation of heavy oil feedstock
  • Combination system and method of supercritical extraction and suspension bed hydrogenation of heavy oil feedstock
  • Combination system and method of supercritical extraction and suspension bed hydrogenation of heavy oil feedstock

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Embodiment

[0110] The properties of feed residue oil are shown in Table 1;

[0111] The extraction solvent was mixed butanes (50% iC4, 50% nC4).

[0112] The supercritical residual oil treatment of the present invention is in such as figure 1 in the system shown. Wherein, the volume ratio of the extraction solvent and the residue in the diluted residue is 1.5:1; the volume ratio of the total extraction solvent entering the asphalt separation tower and the residue is 6:1;

[0113] Among them, the operating conditions of the asphalt separation tower are 4-5Mpag, 80-110°C; the operating conditions of the deasphalted oil separation tower are 4-5Mpag, 120-160°C.

[0114] After the above-mentioned system treatment, the obtained asphalt products and deasphalted oil products are shown in Table 1.

[0115] Table 1

[0116]

[0117] The deasphalted oil in this embodiment is used as feed to the downstream lubricating oil unit to produce high-viscosity lubricating oil. The asphalt is used to ...

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Abstract

The invention discloses a supercritical extraction and suspension bed hydrogenation combined system for a heavy oil raw material and a method. The combined system comprises a supercritical extraction unit and a suspension bed hydrogenation unit, wherein the supercritical extraction unit is used for extracting and separating the heavy oil raw material so as to separate out an asphaltic product; the suspension bed hydrogenation unit is used for carrying out suspension bed hydrocracking treatment on the asphaltic product coming from the supercritical extraction unit. The supercritical extraction and suspension bed hydrogenation combined system can greatly improve the conversion rate of heavy components of the raw material and asphaltene and reduce the scale of suspension bed unit, thus reducing investment and further greatly reducing the hydrogen consumption.

Description

technical field [0001] The invention relates to the fields of supercritical extraction and suspension bed hydrogenation, in particular to a combined system and method of supercritical extraction and suspension bed hydrogenation of heavy oil raw materials. Background technique [0002] In the next 10-15 years, my country's national economy is expected to continue to develop rapidly at a rate of about 6-7%. The consumption of petroleum products is still in the growth period. The average annual growth rate of crude oil consumption is 6.4%, while the annual growth rate of domestic crude oil production is only 1.9%. As the quantity of imported crude oil continues to increase, the availability of high-quality crude oil in the international market is also decreasing, and the proportion of light crude oil in imported crude oil is decreasing. The proportion continued to rise. The relative densities of these heavy oils and extra heavy oils are generally above 0.96, and processing is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14
CPCC10G67/14
Inventor 路磊
Owner 北京和利凯石化技术有限公司
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