A kind of hydrotreating method of hydrocarbon oil

A technology of hydrogenation treatment and hydrogenation pretreatment, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., and can solve problems such as inability to guarantee long-term stable work, lower yield of liquid products, and unsolvable filtration technology. Achieve the effects of avoiding carbon deposition and pressure drop rise, alleviating high temperature carbon deposition inactivation, and reducing reaction temperature
CN104119952BActive Publication Date: 2016-03-16CHINA 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
2016-03-16

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Abstract

The invention provides a hydrocarbon oil hydrotreatment method. The method comprises the following steps: a hydrocarbon oil raw material and hydrogen contacts with a plurality of hydrogenation catalyst bed layers in a hydrotreatment device; and a main hydrogenation pretreatment reactor and a standby hydrogenation pretreatment reactor are alternately used, and the online time of the main hydrogenation pretreatment reactor is greater than the online time of the standby hydrogenation pretreatment reactor. The method allows solid particle impurities in inferior hydrocarbon oil to deposit in a hydrogenation pretreatment unit without greatly improving the running energy consumption of the apparatus, reduces the reaction temperature of a subsequent hydrotreatment unit, effectively protects a hydrogenation catalyst at a rear portion, alleviates the high temperature carbon deposit inactivation and prolongs the service cycle of the hydrogenation catalyst.
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Description

technical field

[0001] The invention relates to a method for hydrotreating hydrocarbon oil. Background technique

[0002] The coal liquefaction process (also known as the coal-to-oil process) refers to the process of converting solid coal into liquid fuels, chemical raw materials and other products through chemical processing. According to different processing routes, coal liquefaction can be divided into two categories: direct liquefaction and indirect liquefaction: indirect liquefaction technology is to first gasify all coal into synthesis gas, and then use coal-based synthesis gas (carbon monoxide and hydrogen) as raw materials to catalyze synthesis into Liquid hydrocarbon fuels and other chemical products; direct coal liquefaction is at high temperature (usually above 400°C) and high pressure (usually above 10MPa), under the action of catalysts and solvents, coal molecules are cracked and hydrogenated, and directly converted into liquid hydrocarbons , and then further p...

Claims

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