Hydrotreatment-catalytic cracking combination process method

A catalytic cracking and hydrotreating technology, applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problem of high sulfur content in catalytic gasoline, improve quality and yield, reduce SOx content and product quality excellent effect

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This combined process solves the problems of high coke yield and poor diesel quality, but requires a s

Method used

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  • Hydrotreatment-catalytic cracking combination process method
  • Hydrotreatment-catalytic cracking combination process method
  • Hydrotreatment-catalytic cracking combination process method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] The wax oil raw material G and the catalytic cycle oil are mixed and enter the hydrotreating reaction zone, and sequentially contact and react with the hydroprotective agent A, the hydroprotective agent B, the hydrodesulfurization agent C and the hydroprocessing catalyst E. The filling volume of the above catalyst The ratio is 4:4:20:72. Using the process flow shown in the drawings, the obtained hydrogenation tail oil is a fraction greater than 165°C. The obtained catalytic light diesel has a distillation range of 190°C to 270°C, and a monocyclic aromatic hydrocarbon content of 51% by mass, which is self-circulated back to the catalytic cracking unit. The catalytic cycle oil has a distillation range of 270°C to 460°C, and the bicyclic aromatic hydrocarbon content is 69% by mass. The catalytic cycle oil is returned to the hydroprocessing reaction zone.

[0039] Table 2, Table 3 and Table 4 respectively show the process parameters, product distribution and...

Example Embodiment

[0040] Example 2

[0041] The wax oil raw material H and the catalytic cycle oil enter the hydrotreating reaction zone after being mixed, and sequentially contact and react with the hydroprotective agent A, the hydroprotective agent B, the hydrodemetalization agent D and the hydroprocessing catalyst E. The filling of the above catalyst The volume ratio is 5:5:15:75. Using the process flow shown in the drawings, the obtained hydrogenation tail oil is a fraction greater than 165°C. The obtained catalytic light diesel oil has a distillation range of 190°C to 255°C and a monocyclic aromatic content of 62% by mass, which is self-circulating back to the catalytic cracking unit. The distillation range of the catalytic cycle oil is 255°C~460°C, and the content of aromatic hydrocarbons above bicyclic ring is 65% by mass. The catalytic cycle oil is returned to the hydroprocessing reaction zone.

[0042] Table 2, Table 3 and Table 5 are the process parameters, product distribution and produ...

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PUM

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Abstract

Provided is a hydrotreatment-catalytic cracking combination process method. Wax oil and catalytic cracking circulation oil go to a hydrotreatment reaction zone together, and are subjected to reactions of hydrodemetallization, hydrodesulfurization, hydrodenitrification, aromatic hydrogenation saturation and the like in the presence of hydrogen and hydrogenation catalysts. The obtained hydrogenated tail oil goes to a catalytic cracking device, a cracking reaction is carried out in the presence of catalytic cracking catalysts. Dry gases, liquefied gases, catalytic cracking gasoline, catalytic cracking light diesel oil, catalytic cracking circulation oil and slurry oil are obtained after separation, the catalytic cracking light diesel oil is subjected to self-circulation in the catalytic cracking device and the catalytic cracking circulation oil is circulated to the hydrotreatment reaction zone. The method can raise yield and quality of gasoline products greatly.

Description

technical field [0001] The present invention belongs to a method for treating hydrocarbon oil with a hydrotreating process and another conversion step, more specifically, a method for producing high-value gasoline with a combined hydrotreating-catalytic cracking process. Background technique [0002] With the increasing scarcity of crude oil resources and the aggravation of heavy and inferior crude oil, how to effectively use limited resources to produce light products in a large amount has become the goal pursued by various refinery technology developers, which can improve the yield and quality of target products. Refining technology has become the choice of many refineries. [0003] In my country, catalytic cracking has been widely used due to its good operational flexibility, high gasoline yield and low one-time investment. A single catalytic cracking process has certain requirements for catalytic raw materials. Raw materials with high sulfur content not only make SOx em...

Claims

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Application Information

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IPC IPC(8): C10G69/04
Inventor 张毓莹蒋东红许友好龚剑洪龙湘云任亮胡志海聂红
Owner CHINA PETROLEUM & CHEM CORP
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