A combined process method of residual oil hydrotreating-catalytic cracking
A catalytic cracking and hydrotreating technology, applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve problems such as unfavorable device stable operation, unable to fundamentally change the pressure drop growth trend of pre-reactor
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Embodiment 1
[0071] The hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C residual oil feedstock described in Example 1 all adopt raw material A. The properties are shown in Table 1, and all the catalytic cracking diesel oil in the catalytic cracking unit is All are recycled to the hydrogenation pretreatment reaction zone, and the properties are shown in Table 2. Among them, the proportion of FCC diesel allocated to hydropretreatment reactor A is 10%, the proportion of FCC diesel allocated to hydropretreatment reactor B is 30%, and the proportion of FCC diesel allocated to hydropretreatment reactor C is 10%. The ratio is 60%. 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, Catalysts in Hydrogenation Pretreatment Reactor B, Hydrogen...
Embodiment 2
[0073] In Example 2, the residual oil raw material B is used in the hydrogenation pretreatment reactor A, the hydrogenation pretreatment reactor B, and the hydrogenation pretreatment reactor C, and all the catalytic cracking diesel oil in the catalytic cracking unit is recycled to The hydrogenation pretreatment reaction zone, wherein the hydrogenation pretreatment reactor A, the hydrogenation pretreatment reactor B, and the hydrogenation pretreatment reactor C are allocated to obtain the same proportion of catalytic cracking diesel oil. 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 hydrogenation pretreatment reactor is 0.44h -1 . The hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, and hydroge...
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 all the catalytic cracking diesel oil in the catalytic cracking unit to the hydrogenation pretreatment reaction zone, in which the hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are all allocated to get the same proportion catalytic cracking diesel. The feed amount of described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C is the same, and described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor The same catalyst loading method was adopted in the hydrogen p...
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