A kind of low-quality oil treatment process method
A treatment process and oil product technology, which is applied in the field of heavy oil treatment by hydrogenation-catalysis combined process, can solve the problems that cannot fundamentally change the pressure drop growth trend of the pre-reactor, unfavorable stable operation of the device, etc.
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Embodiment 1
[0071]Hydrogenation pretreatment reactor A described in embodiment 1, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C residual oil feed all adopt raw material A property to see table 1, the catalysis of 50% of catalytic cracking unit The cracked diesel oil and all the catalytically cracked heavy cycle oil are recycled to the hydrogenation pretreatment reaction zone, and the properties are shown in Table 2. Among them, the catalytic cracking heavy cycle oil is all allocated to hydropretreatment reactor A, the proportion of catalytic cracked diesel oil allocated to hydroprocessing reactor B is 15%, and the proportion of catalytic cracked diesel oil allocated to hydrogenation pretreatment reactor C is 35%. The total catalyst loading, feed properties and feed amount of the hydropretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the hydrogenation pretreatment reactor A, Catalys...
Embodiment 2
[0073] In embodiment 2, in described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C, all adopt residual oil raw material B, the catalytic cracking diesel oil of 30% with catalytic cracking unit and All the catalytic cracking heavy cycle oil is recycled to the hydrogenation pretreatment reaction zone, in which the catalytic cracking heavy cycle oil is all distributed to the hydrogenation pretreatment reactor A, and the proportion of the catalytic cracked diesel oil distributed to the hydrogenation pretreatment reactor B is 15% 1. The proportion of FCC diesel distributed to hydropretreatment reactor C is 15%. The space velocity of each reverse feed is different, and the volume space velocity of liquid A in the hydrogenation pretreatment reactor is 0.20h -1 , the hourly volumetric space velocity of liquid B in the hydrogenation pretreatment reactor is 0.32h -1 , the volumetric space velocity of liquid C in the hyd...
Embodiment 3
[0075] In Example 3, the raw material A is used in the hydrogenation pretreatment reactor A, the raw material B is used in the hydrogenation pretreatment reactor B, and the raw material C is used in the hydrogenation pretreatment reactor C. The properties of the residual oil raw materials used are shown in the table 1. Recycle 50% of the catalytic cracking diesel oil and all the catalytic cracking heavy cycle oil in the catalytic cracking unit to the hydrogenation pretreatment reaction zone, in which the catalytic cracking heavy cycle oil is all distributed to the hydrogenation pretreatment reactor A and to the hydrogenation pretreatment reactor The proportion of FCC diesel in hydrogen pretreatment reactor B is 25%, and the proportion of FCC diesel allocated to hydropretreatment reactor C is 25%. The feed amount of described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C is the same, and described hydrogenation p...
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