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Residue hydrodesulfurization-heavy oil fluid catalytic cracking combined process for high-sulfur crude oil

A hydrodesulfurization and heavy oil catalysis technology, which is applied in hydroprocessing process, petroleum industry, molecular sieve catalyst, etc., can solve the problems of poor desulfurization effect and rapid catalyst deactivation

Inactive Publication Date: 2016-12-21
锡山区绿春塑料制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the existing residual oil hydrogenation process is aimed at vacuum residues in China and the Middle East. When the catalyst used is used for high-sulfur vacuum residues, the desulfurization effect is poor and the catalyst deactivates quickly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The catalyst was prepared by impregnation method, and the carrier was a mixture of MSU-G, SBA-15 and HMS, and the mixing ratio was 1:1.1:0.5. The active component molybdenum nitride MO 2 N, tungsten nitride W 2 N, molybdenum carbide Mo 2 The total content of C and tungsten carbide WC is 10% of the mass of the carrier, and their molar ratio is 1:0.4:0.3:0.8.

[0049] The catalyst is loaded into a fixed bed reactor, the reaction tube of the reactor is made of stainless steel with an inner diameter of 50mm, the catalyst bed is set to 3 layers, the temperature of the catalyst bed is measured by a UGU808 temperature control meter, and the raw material is from Beijing The double-plunger micropump manufactured by the satellite manufacturing plant is continuously transported. The hydrogen is supplied by a high-pressure gas cylinder and the flow rate is controlled by a Beijing Qixing Huachuang D07-11A / ZM gas mass flow meter. The hydrogenation catalyst filling capacity is 2kg. ...

Embodiment 2

[0054] The catalyst is prepared by the impregnation method, and the carrier is a mixture of MSU-G / SBA-15 complex, MSU-G / HMS and SBA-15 / HMS complex, wherein the ratio of MSU-G, SBA-15 and HMS is the same as in the example 1 is the same. The active component molybdenum nitride MO 2 N, tungsten nitride W 2 N, molybdenum carbide Mo 2 The total content of C and tungsten carbide WC is 10% of the mass of the carrier, and the molar ratio is 1:0.6:0.45):1.2.

[0055] All the other conditions are the same as in Example 1.

[0056] The final product was tested and the total sulfur content was reduced to 2ppm with no change in catalyst bed pressure drop.

Embodiment 3

[0084] The catalyst contains catalyst promoter TiO 2 , CeO 2 , V 2 o 5 and NbOPO 4 , its content is respectively 1%, 1.5%, 1% and 3%, all the other are identical with embodiment 1.

[0085] The final product was tested, and after 3 months of use, the pressure drop of the catalyst bed did not change, which was 15% lower than the pressure drop of the catalyst bed in Example 1 for the same use time.

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PUM

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Abstract

The invention discloses a residue hydrodesulfurization-heavy oil fluid catalytic cracking combined process for high-sulfur crude oil. The process comprises the following steps: feeding vacuum residue, optional distillate of catalytic cracking oil slurry, optional catalytic cracking heavy cycle oil and optional distillate oil into a residual oil hydrogenation device, carrying out a hydrogenation reaction in the presence of hydrogen and hydrogenation catalysts, and separating reaction products, thereby obtaining gas, hydrogenated naphtha, hydrogenation diesel and hydrogenated residue oil; feeding the hydrogenated residue oil into a heavy oil fluid catalytic cracking device alone or with vacuum gas oil, carrying out a cracking reaction in the presence of a cracking catalyst, and separating reaction products, thereby obtaining dry gas, liquefied gas, gasoline, diesel oil, heavy cycle oil and oil slurry, wherein the residual oil hydrogenation device is a fixed bed reactor, and the fixed bed reactor is filled with hydrogenation catalysts. According to the process, the total sulfur content in high-sulfur vacuum residue catalytic cracking products can be reduced to 5 ppm or below, and the service life of the hydrogenation catalyst is 2 years or above.

Description

technical field [0001] The invention relates to a combined process of residual oil hydrodesulfurization-heavy oil catalytic cracking, in particular to a combined process of residual oil hydrodesulfurization-heavy oil catalytic cracking of high-sulfur crude oil carried out with a specific catalyst. Background technique [0002] The residual oil mainly refers to the heavy components from the bottom of the atmospheric and vacuum device, among which the atmospheric residual oil is called the atmospheric residual oil, and the vacuum residual oil is called the vacuum residual oil from the decompression device. Vacuum residue oil is black and viscous, semi-solid at room temperature, and its properties are related to those of crude oil. In petroleum refineries, residual oil is often used to process products such as petroleum coke, residual lubricating oil, asphalt, or as a cracking raw material. [0003] At present, there are dozens of residual oil conversion processes available fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/06B01J29/00
CPCC10G69/06B01J29/005B01J2229/186C10G2300/1077C10G2300/202C10G2300/70C10G2400/02C10G2400/04C10G2400/26
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂