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Method for improving quality of hydrocracking products

A technology for hydrocracking and product quality, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of excessive sulfur in mercaptan jet fuel products, high bromine index of heavy naphtha, etc., and achieve improvement and stability. Product quality, reducing acidity and hydrogenation performance, reducing the effect of reaction severity

Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0010] Aiming at the problems of high bromine index of heavy naphtha, high mercaptans and excessive sulfur in aviation fuel products that generally exist in the middle and late stages of the reaction in the hydrocracking reaction process using post-treatment catalysts in the prior art, the present invention provides a Methods of Improving the Quality of Hydrocracking Products

Method used

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  • Method for improving quality of hydrocracking products
  • Method for improving quality of hydrocracking products
  • Method for improving quality of hydrocracking products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] use figure 1 In the process flow shown, A and B are used for the treatment catalyst, C1 is used for the cracking catalyst, the conversion rate of the control reaction mass is 65%, the operation time is 37 months, and the heavy naphtha bromine index is sampled and analyzed.

Embodiment 2

[0043] use figure 1 In the process flow shown, A and B are used for the treatment catalyst, and C2 is used for the cracking catalyst, the reaction quality conversion rate is controlled to 68%, the operation time is 39 months, and the heavy naphtha bromine index is sampled and analyzed.

Embodiment 3

[0047] use figure 1 In the process flow shown, A and B are used for the treatment catalyst, and C3 is used for the cracking catalyst, the reaction quality conversion rate is controlled to 68%, the operation time is 40 months, and the heavy naphtha bromine index is sampled and analyzed.

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Abstract

The invention discloses a method for improving the quality of hydrocracking products. The method comprises the following contents: a hydrocracking material and hydrogen are mixed and then enter a hydrocracking pretreatment reactor, so as to be subjected to refining reaction; a reaction effluent enters a hydrocracking reactor, so as to be subjected to hydrocracking reaction; a hydrogen aftertreatment catalyst is filled between the bottom of the hydrocracking reactor and beds of a hydrocracking catalyst; and a hydrocracking product is separated, so that various products are obtained. The methodcan solve the ubiquitous problems of high heavy naphtha bromine index, high mercaptan and excess aviation fuel product sulphur in middle and later stages of reaction in the process of hydrocracking reaction of aftertreatment catalysts.

Description

Technical field [0001] The invention relates to a method for improving the quality of hydrocracking products, in particular to a method for improving the quality of heavy naphtha products in the hydrocracking products in the middle and late stages of a long-period operation. Background technique [0002] The hydrocracking process is the hydrodesulfurization, hydrodenitrogenation, polycyclic aromatic hydrocarbons hydrogenation saturation and ring-opening cracking of heavy distillate oils (VGO, CGO, DAO) under hydrogen, high temperature, high pressure conditions and catalysts. The process of transforming into light oil and middle distillate oil has the characteristics of flexible operation, good product quality and environmental friendliness. As one of the main processes for the deep processing of heavy distillate oil, it is not only used for the production of light oil products in the refining industry It has also become the key technology of petrochemical enterprises, exerting th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/12
Inventor 王仲义崔哲彭冲孙士可吴子明曹正凯
Owner CHINA PETROLEUM & CHEM CORP
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