Residual oil hydrogenation system with low-temperature low-pressure pretreatment device and residual oil hydrogenation process thereof

A pretreatment device and residual oil hydrogenation technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, refining to remove heteroatoms, etc., can solve the problems of uneconomical, reduced asphaltene content, increased process energy consumption, etc.

Inactive Publication Date: 2020-09-18
中耐工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] But CN110591758A discloses the pretreatment method of residual oil hydrogenation raw material needs secondary pressurization and / or decompression system, causes process energy consumption to increase like this
In addition, this method requires two pretreatment processes, one is a gentle hydrogenation pretreatment process to lighten the residual oil raw material, and the other is to reduce the asphaltene content and increase the colloid content in the residual oil raw material, thereby improving its quality. Dispersion state of asphaltene and cavitation pretreatment process to increase colloidal stability in residual oil feedstock, thus making the pretreatment process cumbersome and uneconomical

Method used

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  • Residual oil hydrogenation system with low-temperature low-pressure pretreatment device and residual oil hydrogenation process thereof
  • Residual oil hydrogenation system with low-temperature low-pressure pretreatment device and residual oil hydrogenation process thereof
  • Residual oil hydrogenation system with low-temperature low-pressure pretreatment device and residual oil hydrogenation process thereof

Examples

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Embodiment 1

[0039] Adopt the raw material identical with following comparative example 1, catalyst kind and grading and packing method thereof, carry out such as figure 2 Shown the present invention has the residual oil hydrogenation fixed-bed reaction system of low-temperature low-pressure pretreatment device and technology thereof and such as figure 1 The process operation comparison of the conventional residual oil hydrogenation fixed-bed reactor system and its process is shown.

[0040] Such as figure 2 As shown, the low-temperature and low-pressure pretreatment device of the residual oil hydrogenation system of the present invention is located before the front (first) reactor of the system, which contains a hydrogenation catalyst that converts unstable olefins into stable alkanes, and the catalyst contains 20wt% Ni catalytic active component and 80wt% AL 2 o 3 carrier. The volume of the low-temperature and low-pressure pretreatment device is 1 / 3 of the volume of the front (first...

Embodiment 2

[0054] Using the same raw material, each functional catalyst, each catalyst gradation and loading ratio and reaction conditions as in the following comparative example 2, carry out as follows figure 2 Shown the present invention has the residual oil hydrogenation fixed-bed reactor system of low-temperature low-pressure pretreatment device and technology thereof and such as figure 1 The process operation comparison of the conventional residual oil hydrogenation fixed-bed reactor system and its process is shown.

[0055] Such as figure 2 As shown, the low-temperature and low-pressure pretreatment device of the residual oil hydrogenation system of the present invention is located before the front (first) reactor of the system, which contains a hydrogenation catalyst that converts unstable olefins into stable alkanes, and the catalyst contains 25wt% Ni catalytic active component and 75wt% Al 2 o 3 carrier. The volume of the low-temperature and low-pressure pretreatment device...

Embodiment 3

[0069] Using the same catalyst species and loading method as in Example 1, the present invention has a low-temperature and low-pressure pretreatment device for the residual oil hydrogenation fixed-bed reactor system and its technology and the existing residual oil hydrogenation fixed-bed reactor system and its process. The relationship between the operating time of the process and the temperature is compared.

[0070] Embodiment 3 adopts such as figure 2 The shown present invention has the residual oil hydrogenation fixed-bed reactor system with low-temperature and low-pressure pretreatment device and its process (such as Example 1), and at the same time, use the same raw materials, each functional catalyst and each catalyst loading Grading and proportion.

[0071] The process operating conditions of the low-temperature and low-pressure pretreatment device are: reaction temperature: 200°C, reaction pressure: 16MPa, space velocity: 5.5h-1, hydrogen-oil volume ratio: 700; the p...

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Abstract

The invention discloses a residual oil hydrogenation system with a low-temperature low-pressure pretreatment device. A low-temperature low-pressure pretreatment device converts unstable olefin in theresidual oil raw material into stable alkane; colloid components formed by gathering sulfur, nitrogen compounds and / or olefins in oxygen and residual oil raw materials are further degraded; the cokingof a catalyst bed layer after the colloid component and the unstable olefin enter a front reactor of the residual oil hydrogenation system is avoided; the number of carbon powder particles which aredeposited on the surface of a reactor catalyst and are converted from coking is further reduced, so that the service life of a protective agent and / or a demetalization catalyst bed layer in the frontreactor of the residual oil hydrogenation system is prolonged.

Description

technical field [0001] The invention relates to the technical field of residual oil hydrogenation, and more specifically relates to a residual oil hydrogenation system with a low-temperature and low-pressure pretreatment device and a residual oil hydrogenation process thereof. Background technique [0002] Residual oil (atmospheric residual oil, vacuum residual oil) is the heaviest part remaining after primary processing (atmospheric and vacuum distillation) of crude oil. Compared with light distillate oil, residual oil has complex composition, large average relative molecular mass, high viscosity, high density, low hydrogen-carbon ratio, high carbon residue value, and contains a large amount of metals, sulfur, nitrogen, colloids, asphaltenes, etc. Harmful elements and undesirable components. [0003] Hydrogenation of residual oil is one of the main technical approaches to lighten heavy oil. At present, hydrogenation reaction technologies such as fixed bed, moving bed, ebu...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C10G45/02
CPCC10G45/02C10G2300/202C10G2300/205
Inventor张留明张俊张红勤宋现玺王红令
Owner中耐工程科技有限公司