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Coking light distillate hydrogenation modification method

A hydrogenation upgrading and light distillate technology, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, can solve the problems of unavailability, reduce the severity of operation, increase the flexibility of device operation, and simplify the process flow Effect

Active Publication Date: 2009-05-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not get good quality 3 # jet fuel

Method used

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  • Coking light distillate hydrogenation modification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Coking light distillate oil raw material 1 enters the first reactor after being contacted with hydrogen, and the reaction conditions are: hydrogen partial pressure 4.8MPa, volume space velocity 2.5h -1 , The reaction temperature is 320°C, and the volume ratio of hydrogen to oil is 500:1. In the second reactor, the reaction conditions are: hydrogen partial pressure 1.8MPa, volume space velocity 2.0h -1 , reaction temperature 170°C, hydrogen oil volume ratio 300:1 raw material oil properties and test results are listed in Table 3.

[0022] It can be seen from Table 3 that hydrogenated kerosene can fully meet the requirements of 3 # Jet fuel specifications and standards; hydrogenated naphtha can be used as a reforming raw material requirement, and can also be used as a raw material for ethylene cracking; hydrogenated diesel oil is a high-quality vehicle diesel blending component.

Embodiment 2

[0024] Coking light distillate oil raw material 2 enters the first reactor after being contacted with hydrogen, and the reaction conditions are: hydrogen partial pressure 5.6MPa, volume space velocity 1.8h -1 , The reaction temperature is 320°C, and the volume ratio of hydrogen to oil is 500:1. In the second reactor, the reaction conditions are: hydrogen partial pressure 1.7MPa, volume space velocity 1.5h -1 , The reaction temperature is 190°C, and the volume ratio of hydrogen to oil is 350:1. The properties of raw oil and test results are listed in Table 4.

[0025] It can be seen from Table 4 that hydrogenated kerosene can fully meet the requirements of 3 # Jet fuel specifications and standards; hydrogenated naphtha can be used as a reforming raw material requirement, and can also be used as a raw material for ethylene cracking; hydrogenated diesel oil is a high-quality vehicle diesel blending component.

Embodiment 3

[0027]Coking light distillate oil raw material 3 enters the first reactor after being contacted with hydrogen, and the reaction conditions are: hydrogen partial pressure 5.6MPa, volume space velocity 1.5h -1 , The reaction temperature is 330°C, and the volume ratio of hydrogen to oil is 550:1. In the second reactor, the reaction conditions are: hydrogen partial pressure 1.8MPa, volume space velocity 1.2h -1 , The reaction temperature is 185°C, the hydrogen oil volume ratio is 300:1, the raw material oil properties and test results are listed in Table 5.

[0028] It can be seen from Table 5 that hydrogenated kerosene can fully meet the requirements of 3 # Jet fuel specifications and standards; hydrogenated naphtha can be used as a reforming raw material requirement, and can also be used as a raw material for ethylene cracking; hydrogenated diesel oil is a high-quality vehicle diesel blending component.

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Abstract

The invention relates to a method used for hydrogenation modification of coking light distillate oil; under hydrogenation refining condition, the raw material of the coking light distillate oil and hydrogen are contacted with W-Mo-Ni series of hydrogenation catalysts firstly; subsequently, naphtha distillate, coal oil distillate and diesel distillate are gained by stripping and distillation; wherein, the coal oil distillate and new hydrogen enter a low-pressure hydrogenation reactor and are contacted with Ni-series of hydrogenation catalysts; the product is separated by a gas-liquid separator; and the liquid product is used as high-quality jet fuel components and the hydrogen-rich gas is returned to the coking light distillate oil raw material and used for hydrogenation refining. The method can process the coking light distillate oil with bad quality into high-quality jet fuel, high-quality naphtha and clean diesel components by simple process, has the advantages of wide application of the raw material, flexible operation, stable running, and the like, and effectively improves the economical benefits of the enterprises.

Description

technical field [0001] The invention relates to a method for hydrogenation and upgrading of coking light distillate oil raw materials, specifically to directly produce high-quality 3 # Jet fuel, the method of simultaneously producing high-quality hydrogenated naphtha and low-sulfur high-cetane diesel components is suitable for refineries with delayed coking units. Background technique [0002] At present, there are two main ways to directly produce qualified jet fuel: one is to obtain kerosene fractions from crude oil through atmospheric distillation, and then undergo hydrogenation or non-hydrogenation treatment to obtain qualified jet fuel products; the other is to obtain qualified jet fuel products through decompression Distillate oil is used as raw material, and qualified jet fuel products can also be directly produced by high-pressure hydrocracking technology. The first method has relatively low equipment investment and operating costs, but is limited by the amount of r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04
Inventor 徐大海李扬王震牛世坤刘继华
Owner CHINA PETROLEUM & CHEM CORP
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