A kind of hydrotreating method of deasphalted oil

A technology for hydrotreating and deasphalting oil, which is applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problems of wasting reactor space, etc., and achieve the improvement of space utilization, simple and reliable operation procedures, high pressure The effect of fewer valves

Active Publication Date: 2016-03-16
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, this method always has a protective reactor offline, and the utilization efficiency of the protective reactor is only 50%, wasting precious reactor space

Method used

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  • A kind of hydrotreating method of deasphalted oil
  • A kind of hydrotreating method of deasphalted oil

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Embodiment 1

[0038] In the hydroprocessing unit used in this example, the main hydrodemetallization reactor is a demetallization reactor A, the spare hydrodemetallization reactor is a demetallization reactor B, and the hydroprocessing unit C is a fixed bed hydrogenation unit, such as figure 1 shown.

[0039] Demetallization reactor A was filled with 20mL of RG-30A catalyst, 20mL of RG-30B catalyst, and 260mL of RDM-35 catalyst, totaling 300mL; demetallization reactor B was filled with 10mL of RG-30A catalyst, 10mL of RG-30B catalyst, -35 catalyst 80mL, 100mL in total. 200mL of RDM-35 catalyst, 200mL of RMS-30 catalyst and 500mL of RN-32V catalyst were filled in the reactor of the fixed bed hydrogenation unit successively, totaling 900mL.

[0040] The properties of deasphalted oil are shown in Table 1.

[0041] The deasphalted oil is mixed with hydrogen and then enters the demetallization reactor A, and then enters the fixed bed hydrogenation unit reactor. The feed rate of deasphalted o...

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Abstract

The invention provides a deasphalted oil hydrotreatment method. The method is carried out in a hydrotreatment apparatus, the hydrotreatment apparatus comprises a hydrogenation metal removal unit and a hydrotreatment unit which are sequentially connected in series, the hydrogenation metal removal unit comprises a main hydrogenation metal removal reactor and a standby hydrogenation metal removal reactor which are connected in parallel, and the volume of the main hydrogenation metal removal reactor is greater than the volume of the standby hydrogenation metal removal reactor. The method is characterized in that deasphalted oil and hydrogen are introduced to the hydrotreatment apparatus, and contact with a plurality of hydrogenation catalyst beds arranged in the hydrotreatment apparatus; and in the hydrotreatment process, the main hydrogenation metal removal reactor and the standby hydrogenation metal removal reactor are alternately used, and the online time of the main hydrogenation metal removal reactor is greater than the online time of the standby hydrogenation pretreatment reactor. The method enables the space utilization rate of the above reactors in the hydrotreatment apparatus to be substantially improved.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of deasphalted oil. Background technique [0002] Solvent deasphalting of residual oil is a common heavy oil treatment method in the refining process. The residual oil is contacted with the extraction solvent, and deasphalted oil and deoiled asphalt are obtained after separation. Deasphalted oil is usually refined and used as raw material for catalytic cracking and hydrocracking, or deeply refined to produce lubricating oil base oil. Among them, the extraction solvent is usually light alkanes, such as propane, butane, isobutane, pentane, isopentane, hexane, etc., as the number of carbon atoms in the extraction solvent increases, the extraction depth increases. The yield of deasphalted oil increases, but the fraction of corresponding deasphalted oil becomes heavier, the quality deteriorates, and the density, viscosity, metal content, sulfur, and nitrogen content usually increase, which adver...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/02
Inventor 董凯牛传峰戴立顺刘涛邓中活施瑢邵志才杨清河胡大为孙淑玲
Owner CHINA PETROLEUM & CHEM CORP
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