Wax oil hydrotreating method

A treatment method, the technology of hydrogenation of wax oil, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of catalytic cracking catalyst deactivation, reduction of raw material reaction speed, and obstruction of other hydrocarbon adsorption, etc., to achieve Effects of increasing conversion rate and light oil yield, reducing hydrogen consumption, and improving reaction effect
CN102899081BActive Publication Date: 2015-03-18CHINA 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
2015-03-18

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Abstract

The invention relates to a wax oil hydrotreating method. According to the invention, under a hydrogenation reaction condition, a mixture of raw material oil and hydrogen is sequentially delivered into three hydrogenation reaction zones and is subjected to reactions. A first hydrogenation reaction zone is filled with a hydrogenation protective agent, and is used for removing metal, colloid and asphaltene from the raw material oil. The second hydrogenation reaction zone is filled with a hydrogenation refining catalyst I, and is mainly used for carrying out hydrodenitrogenation and polycyclic aromatic hydrocarbon partial saturation reactions. The active metal of the hydrogenation refining catalyst I is nickel-tungsten, nickel-molybdenum or nickel-molybdenum-tungsten. The third hydrogenation reaction zone is filled with a hydrogenation refining catalyst II, and is mainly used for carrying out a hydrodesulphurization reaction. The active metal of the hydrogenation refining catalyst II is cobalt-molybdenum. With the method provided by the invention, refined wax oil desulphurization rate can be improved, wax oil raw material cracking performance is improved, and conversion rate and light oil yield of a catalytic cracking device are improved.
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Description

technical field

[0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a method for hydrotreating wax oil. Background technique

[0002] Fluid Catalytic Cracking (FCC) is an important process for producing gasoline components. In my country, the proportion of FCC gasoline in the gasoline pool is about 80%, and in foreign countries, this proportion has also reached 40% to 60%. FCC raw materials mainly include vacuum gas oil, coker gas oil, deasphalted oil and residual oil. The nature of the raw material has a great influence on the FCC product distribution, product properties and catalytic cracking catalyst consumption.

[0003] A large number of studies and practices have shown that the most effective means to improve the quality of catalytic cracking products is to carry out hydrogenation pretreatment on catalytic cracking raw materials to improve their quality. First, through hydrogenation pretreatment of ca...

Claims

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