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A Hydrocracking Process for Maximum Production of Heavy Naphtha and Jet Fuel Components

A technology for hydrocracking and heavy naphtha, which is applied in the petroleum industry, hydrotreating process, and hydrocarbon oil treatment, etc. It can solve the problems of short operation period, low selectivity, and low yield of heavy naphtha and jet fuel components. And other issues

Active Publication Date: 2021-11-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems of low yield of heavy naphtha and jet fuel components in the prior art, low selectivity and short operation period of the device, the present invention provides a hydrogenation method for maximum production of heavy naphtha and jet fuel components cracking method

Method used

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  • A Hydrocracking Process for Maximum Production of Heavy Naphtha and Jet Fuel Components
  • A Hydrocracking Process for Maximum Production of Heavy Naphtha and Jet Fuel Components
  • A Hydrocracking Process for Maximum Production of Heavy Naphtha and Jet Fuel Components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] After the raw material B is mixed with hydrogen, it passes through the hydrofinishing reaction zone and the hydrocracking reaction zone, and successively contacts with the hydrofinishing catalyst and three kinds of hydrocracking catalysts to react, and the conversion rate of the raw material is controlled to 85%, and the reaction effluent is separated Heavy naphtha and jet fuel components are obtained. Catalyst grading scheme, process condition parameters and product yield and property data are listed in Table 2.

[0041] From the data in Table 2, it can be seen that the yields of heavy naphtha and product jet fuel components obtained from raw material B are 35.35% and 41.98%, respectively.

Embodiment 2

[0043] After the raw material C is mixed with hydrogen, it passes through the hydrofinishing reaction zone and the hydrocracking reaction zone, and successively contacts with the hydrofinishing catalyst and three kinds of hydrocracking catalysts to react, and the conversion rate of the raw material is controlled to 85%, and the reaction effluent is separated Heavy naphtha and jet fuel components are obtained. Catalyst grading scheme, process condition parameters and product yield and property data are listed in Table 2.

[0044] It can be seen from the data in Table 2 that the yields of heavy naphtha and jet fuel components obtained from raw material C are 38.83% and 41.95%, respectively.

[0045] It can be seen that, under the same conversion depth, adopting the preferred raw material oil of this method can significantly increase the yield of product heavy naphtha and jet fuel components.

Embodiment 3

[0050] In Example 3, the conversion rate of raw materials was controlled to be 82%, and the yields of heavy naphtha and jet fuel components were 32.83% and 41.95%, respectively.

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Abstract

A hydrocracking method for the maximum production of heavy naphtha and jet fuel components. After the raw oil is mixed with hydrogen, it passes through the hydrofinishing reaction zone and the hydrocracking reaction zone in turn, and the reaction products are separated to obtain heavy naphtha and jet fuel. Fuel components, hydrocracking reaction zone filled with three kinds of hydrocracking catalysts with different molecular sieve contents from top to bottom; the total catalyst volume in the hydrocracking reaction zone is calculated as 100%, and the volume fraction of hydrocracking catalyst I is 15% to 35% , the volume fraction of the hydrocracking catalyst II is 35% to 65%, and the volume fraction of the hydrocracking catalyst III is 20% to 40%. By adopting the method provided by the invention, the activity and stability of the hydrocracking catalyst can be taken into consideration, and heavy naphtha and jet fuel components can be produced in a large amount under high conversion rate.

Description

technical field [0001] The invention belongs to the processing method of distillate oil or secondary processed oil under the condition of high-pressure hydrogenation, more specifically, it is a hydrocracking method for maximum production of heavy naphtha and jet fuel from distillate oil or secondary processed oil. Background technique [0002] In recent years, the continuous development of my country's economy has brought about continuous growth in the demand for aviation transportation fuel and aromatic hydrocarbon raw materials. The hydrocracking process can convert heavy distillates into light products. The heavy naphtha in the light products can be used as a raw material for catalytic reforming to produce aromatics, and the jet fuel fraction can be used as high-quality No. 3 jet fuel. However, the domestic single-stage single-pass hydrocracking unit that produces middle distillate oil (diesel + jet fuel) and high-quality tail oil and reformate currently has problems such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14
CPCC10G67/14C10G2300/10C10G2300/1037C10G2300/202C10G2300/70
Inventor 莫昌艺赵阳赵宁吴昊赵广乐胡志海
Owner CHINA PETROLEUM & CHEM CORP