Process for treating inferior oil product
A process method and technology for oil products, which are applied in the field of heavy oil treatment by hydrogenation-catalysis combined process, can solve problems such as unfavorable stable operation of devices and inability to fundamentally change the growth trend of pressure drop in a pre-reactor.
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Embodiment 1
[0071] The hydroprocessing reactor A, hydroprocessing reactor B, and hydroprocessing reactor C described in Example 1 all use raw material A as the residual oil feed. The properties are shown in Table 1. The 50% catalytic cracking unit Cracked diesel oil, all FCC heavy cycle oil and all FCC oil slurry are recycled to the hydrotreating pretreatment reaction zone. The properties are shown in Table 2. Among them, the FCC heavy cycle oil is all allocated to hydroprocessing reactor A, the proportion of FCC diesel allocated to hydroprocessing reactor B is 15%, and the proportion of FCC slurry is 70%; it is allocated to hydroprocessing The proportion of FCC diesel oil in reactor C is 35%, and the proportion of FCC oil slurry is 30%. The total catalyst loading, feed properties, and feed amounts of the hydroprocessing reactor A, the hydroprocessing reactor B, and the hydroprocessing reactor C are completely the same, and the hydroprocessing reactor A, The catalysts of hydrotreating rea...
Embodiment 2
[0073] In Example 2, the hydrotreating reactor A, hydrotreating reactor B, and hydrotreating reactor C all use residual oil feedstock B, and 30% of the catalytic cracking diesel oil in the catalytic cracking unit is combined with All the FCC heavy cycle oil and all the FCC oil slurry are circulated to the hydrotreating pretreatment reaction zone, and the FCC heavy cycle oil is all distributed to the hydrotreating reactor A. The proportion of FCC diesel oil allocated to hydroprocessing pretreatment reactor B is 15%, and the proportion of FCC oil slurry is 50%. The proportion of FCC diesel oil allocated to the hydroprocessing pretreatment reactor C is 15%, and the proportion of FCC oil slurry is 50%. The space velocity of each reverse feed is different, and the volumetric space velocity of liquid A in the hydrotreating pretreatment reactor is 0.20h -1 , The volumetric space velocity of liquid B in the hydrogenation pretreatment reactor is 0.32h -1 , The volumetric space velocity ...
Embodiment 3
[0075] In Example 3, the raw material A is used in the hydroprocessing reactor A, the raw material B is used in the hydroprocessing reactor B, and the raw material C is used in the hydroprocessing reactor C. The properties of the residual oil raw materials used are shown in the table 1. Circulate 50% of the catalytically cracked diesel oil and all the catalytically cracked heavy cycle oil and all the catalytically cracked oil slurry in the catalytic cracking unit to the hydrotreating reaction zone, where all the catalytically cracked heavy cycle oil is allocated to the hydrotreating pretreatment In reactor A, the proportion of catalytically cracked diesel oil allocated to hydroprocessing reactor B is 25%, the proportion of catalytic cracking oil slurry is 50%, and the proportion of catalytic cracking diesel allocated to hydroprocessing reactor C is 25%. The ratio of cracked oil slurry is 50%. The feed amounts of the hydroprocessing reactor A, hydroprocessing reactor B, and hydr...
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