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Method for hydrotreating high-sulfur and high-metal residual oil

A hydrogenation treatment, high metal technology, applied in refining to remove heteroatoms, etc., can solve the problems of inability to process high metal content residue, short operation cycle, etc., to increase porosity, avoid activity decline, and slow down deactivation speed effect

Active Publication Date: 2009-09-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method cannot process residue oil with high metal content, or when processing residue oil with high metal content, the operation cycle is short

Method used

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  • Method for hydrotreating high-sulfur and high-metal residual oil
  • Method for hydrotreating high-sulfur and high-metal residual oil
  • Method for hydrotreating high-sulfur and high-metal residual oil

Examples

Experimental program
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Effect test

Embodiment 1

[0048] The residual oil hydrogenation unit of embodiment 1 comprises three reactors, an upflow reactor and two fixed bed reactors, the upflow reactor catalyst is filled in the upflow reactor, and the protective agent and The demetallization catalyst is filled with a desulfurization catalyst in the second fixed-bed reactor. Among them, the loading ratio of upflow reactor catalyst: protective agent: demetallization catalyst: desulfurization catalyst is 44:1.0:15:40, that is, the loading ratio of upflow reactor catalyst to fixed bed hydrogenation catalyst is 44:56.

[0049] The raw material oil A used in Example 1 is a mixture of vacuum residue, catalytic cracking decant oil and catalytic cracking heavy cycle oil, and the mass ratio of the three is 90:4:6 in sequence, and its properties are shown in Table 1. The raw material oil A is mixed with hydrogen and enters the residual oil hydrogenation unit for reaction. The reaction conditions are shown in Table 2, and the reaction prod...

Embodiment 2

[0051] The residual oil hydrogenation unit of embodiment 2 comprises three reactors, an upflow reactor and two fixed bed reactors, the upflow reactor catalyst is filled in the upflow reactor, and the protective agent and the protective agent are filled in the first fixed bed reactor The demetallization catalyst is filled with a desulfurization catalyst in the second fixed-bed reactor. The loading ratio of upflow reactor catalyst: protective agent: demetallization catalyst: desulfurization catalyst is 36:0.5:7.5:56, that is, the loading ratio of upflow reactor catalyst to fixed bed hydrogenation catalyst is 36:64.

[0052] The raw material oil B used in Example 2 is a mixture of vacuum residue, catalytic cracking decant oil and catalytic cracking heavy cycle oil, and the mass ratio of the three is 80:7:13 in turn, and its properties are shown in Table 1. The raw material oil B is mixed with hydrogen and enters the residual oil hydrogenation unit for reaction. The reaction condi...

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Abstract

The invention provides a method for hydrotreating high-sulfur and high-metal residual oil, which comprises the following steps: the residual oil and catalytic cracking recycle oil are in contact with a residual oil hydrogenation catalyst in the presence of hydrogen gas and under the hydrotreating reaction condition so as to carry out a hydrotreating reaction; the reaction product is separated to obtain gas, hydrogenated naphtha, hydrogenated diesel oil and hydrogenated residual oil. The residual oil hydrogenation catalyst is a combination of at least two catalysts, namely, an up-flow reactor catalyst and a fixed-bed hydrogenation catalyst and the two catalysts are respectively put in an up-flow reactor and a fixed-bed reactor; the ratio of the up-flow reactor catalyst and the fixed-bed hydrogenation catalyst is 30:70 to 70:30. The method can treat the high-sulfur and high-metal residual oil and effectively slow down the ascending speed of the pressure drop of the fixed-bed catalyst bed, thus realizing the long-term running of the device. Besides, the method can combine the residual oil hydrotreating and catalytic cracking more effectively and has better implementation effect.

Description

technical field [0001] The invention belongs to a method for treating hydrocarbon oil in the presence of hydrogen, more particularly, a method for hydrotreating high sulfur and high metal content residual oil. Background technique [0002] With the development of my country's national economy, my country's crude oil imports have increased rapidly year by year in recent years, and Middle Eastern crude oil with high sulfur and high metals accounts for a large proportion of imported crude oil. Therefore, the processing and full utilization of high-sulfur and high-metal residue oil is becoming a major issue today. [0003] Among the various methods for lightening residual oil, it is a good process to firstly carry out hydrogenation treatment on the residual oil, and then carry out catalytic cracking processing on the hydrogenated tail oil. The residue oil is hydrotreated to remove impurities such as metals, sulfur, nitrogen, etc., and the hydrogen content is increased. It can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04
Inventor 刘涛牛传峰杨清河戴立顺胡大为
Owner CHINA PETROLEUM & CHEM CORP
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