A kind of hydrorefining process

A technology for hydrotreating and hydrotreating reactions, which is applied in the petroleum industry, refining to remove heteroatoms, and treat hydrocarbon oil, etc., can solve the problems of easy coking at the top and frequent head skimming of the device, and prolong the life of the catalyst and the operation cycle of the device. , Improve the economic benefits of enterprises, and inhibit the effect of coking

Active Publication Date: 2021-10-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adopting a new catalyst grading method, it overcomes the defect that the top of the catalyst system is easy to coke in the existing hydrorefining process, which leads to frequent head skimming of the unit

Method used

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  • A kind of hydrorefining process
  • A kind of hydrorefining process
  • A kind of hydrorefining process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The reactor is filled with catalysts A1, B2, and C1 in equal proportions from the front to the rear, and the raw oil passes through the reactor bed after being contacted with hydrogen.

Embodiment 2

[0041] The reactor is loaded with A1, B1, and C1 catalysts in equal proportions from the front to the rear, and the raw oil passes through the reactor bed after being contacted with hydrogen.

Embodiment 3

[0045] The reactor is filled with catalysts A2, B2, and C1 in equal proportions from the front to the rear, and the raw oil passes through the reactor bed after being contacted with hydrogen.

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Abstract

The invention discloses a hydrogenation refining process. After the raw oil is mixed with hydrogen, it passes through the hydrofinishing reaction zone to obtain the hydrofinishing reaction effluent; wherein, the hydrofinishing reaction zone includes several hydrofinishing catalyst beds, and hydrogenation is carried out according to the contact sequence with the raw material oil The metal content of the catalyst in the refined catalyst bed layer increases sequentially, the total acid content of the catalyst increases sequentially, the acid content of B acid decreases sequentially, and the acid content of L acid increases sequentially. The method of the present invention is particularly suitable for hydrocracking pretreatment or hydrofining process, while ensuring the effects of hydrodesulfurization and hydrodenitrogenation, it can effectively slow down the polycyclic aromatic hydrocarbons caused by the high activity and temperature rise of the catalyst in the first bed. Polymerization and runaway temperature problems, and prolong the life of the catalyst and the operating cycle of the device.

Description

technical field [0001] The invention relates to a method for preparing and grading a hydrorefining catalyst. The method of the present invention is especially suitable for hydrocracking pre-refining (pretreatment) process. While ensuring hydrodesulfurization and hydrodenitrogenation, it can reduce the amount of carbon deposition in the catalyst and the pressure drop of the reactor, thereby prolonging the operation of the hydrogenation unit cycle. Background technique [0002] With the increasingly stringent requirements of environmental protection regulations on the quality of oil products, under the trend of heavy and inferior crude oil, hydrogenation technology has been widely used and developed. The refinery's hydroprocessing technology mainly includes jet fuel liquid phase hydrogenation technology, diesel hydrofining technology, wax oil hydrogenation pretreatment technology, hydrocracking technology, residual oil hydrogenation technology, etc. Among these technologies,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/08
CPCC10G45/08C10G2300/1037C10G2300/202
Inventor 曹正凯吴子明崔哲彭冲孙士可王仲义
Owner CHINA PETROLEUM & CHEM CORP
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