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Process for deep dearylation of hydrocarbon oil

A technology for dearomatization and hydrodearomatization, which is applied in the field of hydrotreating hydrocarbon oil, and can solve the problems of not reaching deep dearomatization and low dearomatization depth

Inactive Publication Date: 2005-01-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology not only requires chlorine to be injected into the raw material, but also the depth of dearomatization is not very high, and the removal rate of aromatics is below 60%, which cannot achieve the purpose of deep dearomatization

Method used

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  • Process for deep dearylation of hydrocarbon oil

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation method of this catalyst is as follows:

[0019] First, the mesoporous silicon-alumina carrier is shaped, and the formed carrier is dried at 80°C-140°C for 2-10 hours, and then calcined at 400-650°C for 2-10 hours. The platinum and palladium solution used are chloride, chlorate or ammonium salt of platinum and palladium. Immerse for 1-8 hours by saturated impregnation method, then dry at 80°C-140°C for 2-10 hours, and bake at 400-650°C for 2-10 hours. The content of noble metals platinum and palladium is 0.1-10% by weight, and the weight ratio of platinum and palladium is 0.1-10:1.

[0020] When the nature of raw oil is bad, the above process is suitable to be applied in combination with other hydrogenation pretreatment processes.

[0021] The method provided by the present invention will be further described below in conjunction with the accompanying drawings.

[0022] The accompanying drawing is a schematic diagram of a method for deep dearomatizatio...

Embodiment 1

[0036] In this embodiment, solvent naphtha is used as raw material oil, and its properties are shown in Table 1. Carry out the test according to the process flow shown in the accompanying drawing. The test results are shown in Table 2. It can be seen from Table 2 that the aromatics content of the product is less than 0.5% by weight.

Embodiment 2

[0038] In this embodiment, diesel fraction is used as feedstock oil, and its properties are shown in Table 3. Carry out the test according to the process flow shown in the accompanying drawing. The test results are shown in Table 4. It can be seen from Table 4 that the aromatic content of the product is 5.4% by weight.

[0039] Table 1

[0040] Item Raw oil

[0041] Density (20℃), g / cm 3 0.8031

[0042] Refraction, nD 20 1.4478

[0043] Sulfur content, ppm 619

[0044] Nitrogen content, ppm 4

[0045] Total aromatics content, wt% 11.8

[0046] Distillation range (ASTM D-86), ℃

[0047] Initial boiling point 189

[0048] 50% 222

[0049] 90% 231

[0050] Table 2

[0051] Process conditions

[0052] Hydrogen partial pressure 6.4

[0053] Reaction temperature 285

[0054] Hydrogen oil ratio, Nm 3 / m 3 550

[0055] volu...

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Abstract

The invention discloses a process for deep dearylation of hydrocarbon oil which comprises, charging raw oil and hydrogen gas into hydrogenation reactor, contacting hydrodealkylation catalyst, isolating the reacted articles to obtain gaseous phase and liquid phase product, wherein the gaseous phase product is compressed for cycling use, the liquid phase product is isolated to obtain destination product of low aromatic hydrocarbons.

Description

technical field [0001] The invention belongs to a method for hydrotreating hydrocarbon oil, more specifically, it belongs to a method for deep dearomatization of hydrocarbon oil. Background technique [0002] Among many hydrocarbon oils such as kerosene, diesel oil, some special solvent oils, etc., aromatics have always been considered as a non-ideal component. Excessively high aromatic content in aviation kerosene will reduce the smoke point to an unacceptable level; in order to improve the performance and health safety of some solvent oils, it is stipulated that the aromatics must be reduced to a very low level; in the diesel fraction, the aromatics content is too high It not only increases the density of oil products and reduces the economic benefits, but also reduces the cetane number of oil products, resulting in a great reduction in the performance of diesel oil. At present, with the increasing pressure of environmental protection, new diesel s...

Claims

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Application Information

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IPC IPC(8): C10G45/44
Inventor 蒋东红胡志海石玉林夏国富
Owner CHINA PETROLEUM & CHEM CORP
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