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Liquid increasing agent for delayed coking of oil refining process

A delayed coking and oil refining process technology, applied in cracking, petroleum industry, hydrocarbon oil treatment, etc., can solve problems such as coking and fouling of anti-coking and yield-increasing agents, affecting the yield of light oil products, and serious coking of residual oil, etc., to achieve Prevent scaling and corrosion, reduce coke and dry gas yield, good effect

Active Publication Date: 2018-06-15
CESTOIL IND SERVICES SHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the most effective and simple method to solve the fouling and coking of the delayed coking unit and increase the yield of liquid products is to add an anti-coke yield-increasing agent to the raw material residue, which can not only reduce the generation of coke and dry gas, but also increase the yield of liquid products. Strong anti-coking, anti-scaling and anti-corrosion effects can greatly improve the economic and social benefits of the refinery. However, the existing anti-coking and income-increasing agents are often prone to coking and fouling due to high-temperature oxidation, and the residual oil in the coking tower is seriously coked. Corrosion device, affecting light oil yield

Method used

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  • Liquid increasing agent for delayed coking of oil refining process
  • Liquid increasing agent for delayed coking of oil refining process
  • Liquid increasing agent for delayed coking of oil refining process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] According to the mass parts in Table 1, disperse coke cleaner, free radical quencher, asphaltene deassociating agent, asphaltene cracking agent, hydrogen donor, scale inhibitor and anti-scorch agent, emulsifier, metal passivator, retarder Put the etchant and diluent into the container, heat up while stirring, stir at 80°C for 1 hour, and filter to remove impurities after cooling to obtain different types of liquid income increase agent samples:

[0042] Table 1

[0043]

[0044]

[0045]

Embodiment 2

[0047]The effect evaluation of liquid income increase agent was carried out in the delayed coking workshop of Liaohe Petrochemical Company. The ZK-818 coking liquid income increase agent developed by Yixing Zhongdakai Chemical Co., Ltd. was used as a comparison. The specific operating parameters are as follows: reaction temperature 480 ° C for 2 hours, regeneration temperature React at 650°C for 2 hours, the preheating temperature of the raw material oil is 250°C, the dosage of the liquid income increase agent is 100ppm, the added amount is calculated by the raw material oil, and the raw material oil is taken from Liaohe vacuum residue.

[0048] Table 2

[0049]

[0050]

[0051] Note: 1) Light oil % = (gasoline + diesel) %;

[0052] 2) Total liquid yield % = (liquefied petroleum gas + gasoline + diesel oil)%.

[0053] As can be seen from the data in Table 2, adding the liquid yield increaser of the present invention can significantly increase the yield of light oil and...

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Abstract

The invention relates to a liquid increasing agent for delayed coking of the oil refining process. The liquid increasing agent comprises following components in parts by weight: 20 to 50 parts of dispersed coke cleaning agent, 1 to 10 parts of free radical quenching agent, 5 to 15 parts of asphaltene disassociation agent, 5 to 15 parts of asphaltene cracking agent, 10 to 25 parts of hydrogen donor, 5 to 15 parts of scale inhibiting and scorch retarding agent, 5 to 15 parts of emulsifier, 1 to 10 parts of metal passivator, 1 to 10 parts of corrosion inhibitor, and 15 to 40 parts of diluent. Theprovided liquid increasing agent has the advantages of high temperature resistance and good effect, does not contain sulfur or phosphorous, and can increase the liquid yield, and reduce the yield ofcoke and dry gas.

Description

technical field [0001] The invention belongs to the technical field of oil refining additives, and in particular relates to a liquid income increasing agent used for delayed coking in an oil refining process and a preparation method thereof. Background technique [0002] With the continuous extraction of crude oil, the trend of heavy and inferior crude oil is becoming increasingly prominent. At the same time, with the development of the economy, the market demand for light oil products continues to rise, and the contradiction between supply and demand is becoming more and more prominent. Deep processing of heavy oil, especially catalytic cracking and delayed coking of heavy residual oil, is a technology widely used in the oil refining industry to increase the output of light oil products. It is of great significance to save non-renewable oil and gas resources and improve the economic benefits of refining and chemical enterprises. [0003] The delayed coking unit can process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G9/16C10G9/00C10G75/02C10G75/04
CPCC10G9/00C10G9/005C10G9/16C10G75/02C10G75/04
Inventor 胡涛英
Owner CESTOIL IND SERVICES SHENZHEN CO LTD
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