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Residual oil hydrotreating method

A treatment method and residue hydrogenation technology are applied in the fields of heavy residue oil hydrotreating and residue oil hydrotreating. The effect of improving reaction performance and improving economic efficiency

Inactive Publication Date: 2017-02-01
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalytic cracking diesel oil, pyrolysis diesel oil, C10 heavy aromatics and other light and inferior oil products have high aromatics content, strong taste, and low cetane number, so they cannot meet the increasingly stringent environmental protection requirements directly as products

Method used

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  • Residual oil hydrotreating method

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Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 Shown: On the basis of the raw residue oil fixed-bed hydrogenation unit feed, blending 3% catalytic diesel oil to obtain the feed 1, mixed with fresh hydrogen 2, enters the fixed-bed hydrogenation reactors 3 and 4, and then Through hydrogenation protection agent, hydrodemetallization catalyst, hydrodesulfurization catalyst, hydrodenitrogenation catalyst and hydrodecarbonization catalyst; the reaction temperature is 400°C, the hydrogen pressure is 15MPa, and the reaction space velocity is 1.2. After the obtained product enters the thermal high fraction 6, the remaining hydrogen is re-mixed with the fresh hydrogen 2 through the circulating hydrogen compressor 5 and then enters the reaction system. Hydrogen tail oil 12, hydrogenated tail oil can be used as feed for catalytic cracking unit.

Embodiment 2

[0022] Such as figure 1 Shown: On the basis of raw residue oil fixed-bed hydrogenation unit feed, blending 2% mass fraction of catalytic diesel oil and 2% mass fraction of pyrolysis diesel oil to obtain feed 1, mixed with fresh hydrogen 2 and then entering the fixed-bed hydrogenation unit Hydrogen reactors 3 and 4 pass through hydrogenation protecting agent, hydrodemetallization catalyst, hydrodesulfurization catalyst, hydrodenitrogenation catalyst and hydrodecarbonization catalyst in sequence; the reaction temperature is 380°C, the hydrogen pressure is 16MPa, and the reaction space velocity is 0.8. After the obtained product enters the thermal high fraction 6, the remaining hydrogen is re-mixed with the fresh hydrogen 2 through the circulating hydrogen compressor 5 and then enters the reaction system. Hydrogen tail oil 12, hydrogenated tail oil can be used as feed for catalytic cracking unit.

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Abstract

The invention discloses a residual oil hydrotreating method. According to the method, on the basis of the material feeding of the original residual oil fixation bed hydrogenation device, a suitable proportion of an inferior quality light oil product is added, a hydrogenation protection agent, a hydrogenation demetallization catalyst, a hydrogenation desulfurization catalyst, a hydrogenation denitrogenation catalyst and a hydrogenation residue carbon removing catalyst are sequentially used, the product is fractionated to obtain gasoline, kerosene, diesel oil distillates and hydrogenated tail oil, and the hydrogenated tail oil can be used as the fed material for a catalytic cracking device. According to the present invention, with the method, the viscosity of the material feeding system of the residual oil fixation bed hydrogenation device can be reduced while the system reaction performance and the product quality can be improved.

Description

technical field [0001] The invention belongs to the field of heavy residue oil hydrogenation treatment, and in particular relates to a residue oil hydrogenation treatment method. Background technique [0002] Compared with other residual oil processing technologies, fixed bed hydroprocessing technology has low investment and operating costs, safe and simple operation, and is by far the most industrially applied and most mature residual oil hydrogenation technology. The combined application technology of residual oil fixed bed hydrotreating-catalytic cracking has gradually become an important means for refineries to realize the light weight of residual oil and produce clean oil products. The use of residual oil as FCC raw material after fixed-bed hydrotreating not only reduces the sulfur content of FCC raw material, but also helps to reduce the sulfur content of FCC products. Residue fixed bed hydroprocessing technology will be the preferred technology for most refineries, e...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 廉勇徐骏杨苏平
Owner SINOPEC YANGZI PETROCHEM
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