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
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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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