A Catalytic Cracking Method for Improving Liquid Yield

A catalytic cracking and catalytic cracking device technology, applied in the field of catalytic cracking to improve liquid yield, can solve problems such as inability to effectively reduce coke yield, and achieve the effects of shortening gasification time, significant economic benefits, and improving dispersibility

Active Publication Date: 2018-09-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a catalytic cracking method for improving the liquid yield in order to overcome the defects that the existing catalytic cracking process cannot effectively reduce the coke yield and increase the liquid yield

Method used

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  • A Catalytic Cracking Method for Improving Liquid Yield
  • A Catalytic Cracking Method for Improving Liquid Yield

Examples

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Effect test

Embodiment 1

[0030] This example is used to illustrate the catalytic cracking method for improving liquid yield provided by the present invention.

[0031] Take 2000 kg of atmospheric residual oil, add 2 kg of ethoxy nonyl phenol and 2 kg of vacuum wax oil in sequence, fully stir and mix to obtain modified feed oil A. Then, the feedstock oil A is injected into a fluidized bed reactor to perform a catalytic cracking reaction, wherein the reaction temperature is 510°C, and the space velocity is 25h -1 , The weight ratio of agent to oil is 6. The resulting product distribution list is shown in Table 3.

Embodiment 2

[0039] This example is used to illustrate the catalytic cracking method for improving liquid yield provided by the present invention.

[0040] Take 2000 kg of atmospheric residual oil, add 2.5 kg of ethoxy nonylphenol, 1.5 kg of antimony dialkyl dithiophosphate, and 2 kg of vacuum wax oil in sequence, and fully stir and mix to obtain modified feed oil B. Then, the feedstock oil B is injected into a fluidized bed reactor to perform a catalytic cracking reaction, where the reaction temperature is 510°C, and the space velocity is 25h -1 , The weight ratio of agent to oil is 6. The resulting product distribution list is shown in Table 3.

Embodiment 3

[0042] This example is used to illustrate the catalytic cracking method for improving liquid yield provided by the present invention.

[0043] Take 2000 kg of atmospheric residual oil, add 2 kg of dodecyl benzene sulfonic acid and 2 kg of vacuum wax oil in sequence, fully stir and mix to obtain modified feed oil C. Then, the feedstock oil C is injected into a fluidized bed reactor to perform a catalytic cracking reaction, wherein the reaction temperature is 510°C, and the space velocity is 25h -1 , The weight ratio of agent to oil is 6. The resulting product distribution list is shown in Table 3.

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Abstract

The invention relates to a catalytic cracking method for raising liquid yield. According to the method, raw oil and an asphaltene dispersant are injected into a catalytic cracking unit to carry out a catalytic cracking reaction, wherein dosage of the asphaltene dispersant is 5-10,000 ppm. According to the catalytic cracking method for raising liquid yield, coke yield can be remarkably reduced, and liquid yield can be significantly raised.

Description

Technical field [0001] The invention relates to petroleum refining and petrochemical processing processes, in particular to a catalytic cracking method for improving liquid yield. Background technique [0002] As the trend of heavy and degraded petroleum continues to deepen, the technical difficulties of petroleum refining and petrochemical processing are gradually increasing. The requalification and deterioration of raw materials are mainly reflected in the increase in the content of gum and asphaltene in the raw oil. According to the definition of additional coke in the coke, it is mainly high boiling point and fused ring aromatics such as gum asphaltene in the raw oil. The precursor of green coke is formed by condensation reaction on the surface of the catalyst. Therefore, the poorer the quality of the feedstock, the greater the impact on coke production. [0003] At present, in view of the problem of raw material deterioration, there are mainly the following two measures: one...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/00
Inventor 陈珊珊谢朝钢龚剑洪
Owner CHINA PETROLEUM & CHEM CORP
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