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Method for preparing needle coke material by catalytic cracking slurry

A technology for catalytic cracking oil slurry and needle coke raw materials, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc. It can solve the problems of increased pressure drop of fixed bed, difficulty in long-term stable operation, etc., and achieves convenient implementation Effect

Active Publication Date: 2015-02-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The separation methods of oil slurry powder with good industrial application effect include sedimentation separation method, electrostatic separation method, filtration separation method, sieve filtration method and liquid-solid suspension separation method, etc., but these methods cannot meet the requirements of fixed catalyst powder removal effect. The requirements of the bed for the feed, otherwise the fixed bed will have increased pressure drop and hot spots, making it difficult to run stably for a long period of time

Method used

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  • Method for preparing needle coke material by catalytic cracking slurry
  • Method for preparing needle coke material by catalytic cracking slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The catalytic cracking oil slurry A first passes through the protective reactor A, contacts with the adsorbent to filter out most of the catalytic cracking catalyst powder, is pressurized by the raw material oil pump and mixed with hydrogen, then enters the heating furnace, after heating, enters the hydrogenation reactor, and is sequentially combined with hydrogenation Protective agent, hydrodemetallization agent and hydrodesulfurization agent contact. The oil produced by hydrogenation is separated into gas and liquid by a high-pressure separator, and the liquid product is discharged from the device. After being compressed by a compressor, the gas is mixed with new hydrogen and then mixed with raw oil. When the protective reactor A reaches the saturated adsorption capacity and becomes clogged, causing the pressure difference to rise, the protective reactor A is cut off, the adsorbent in it is replaced, and the protective reactor B is cut into the reactor. When the prote...

Embodiment 2

[0037] The process flow of this example is the same as that of Example 1, using catalytic cracking oil slurry B, the loading ratio of the adsorbent in the protection reactor, the loading ratio of the catalyst in the hydrogenation reactor, the hydrogenation reaction conditions and the properties of the hydrogenated oil are shown in the table 2.

[0038] It can be seen from Table 3 that after hydrogenation treatment of catalytic cracking oil slurries A and B, the sulfur content in the hydrogenated oil was less than 0.3% by weight, and only a small amount of hydrogenated and saturated aromatic hydrocarbons with three or more rings were hydrogenated. Hydrogenation and saturation are part of the quality, and the total amount of three-ring and more than three-ring fused aromatic hydrocarbons has increased. The oil produced by hydrogenation can be used as a high-quality needle coke raw material.

[0039] Table 1

[0040] Raw oil properties

FCC Slurry A

Catalytic cra...

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Abstract

The invention discloses a method for preparing a needle coke material by catalytic cracking slurry. A protective zone and a hydrogenation reaction zone are arranged; catalytic cracking oil firstly enters the protective zone to adsorb most of catalytic cracking catalyst powder, then is mixed with hydrogen to be fed into a heating furnace, and enters the hydrogenation reaction zone to carry out hydrogenation treatment after being heated. Most of catalytic cracking catalyst powder entrained in the catalytic cracking slurry can be filtered to achieve the purpose of protecting a primary hydrogenation catalyst and achieving long-term operation by providing the protective zone in front of the hydrogenation reaction zone. In addition, most of sulphur in the catalytic cracking slurry is removed by hydrorefining of the catalytic cracking slurry, and the produced qualified needle coke material is produced.

Description

technical field [0001] The invention relates to a treatment method of catalytic cracking oil slurry, more specifically, a method for producing needle coke raw material from catalytic cracking oil slurry. Background technique [0002] Catalytic cracking (FCC) is one of the most important heavy oil lightening processes in the world today. In the past 10 years, catalytic cracking technology has made great progress in terms of technology and catalysts, so that a large part of catalytic cracking units can directly process normal Pressure residue or blending part of vacuum residue. However, it also brings some problems, such as the poor distribution of catalytic cracking products, and the rapid decline of catalyst activity due to severe coking of catalytic cracking catalysts. In order to increase the processing capacity of the device, reduce energy consumption, and increase light products, it is a good solution to throw oil slurry outside. The amount of oil slurry thrown out of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/06
Inventor 刘涛戴立顺牛传峰杨清河邵志才董凯
Owner CHINA PETROLEUM & CHEM CORP
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